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REL3_1_STA
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v2.0
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@@ -1,29 +0,0 @@
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License and Contributions
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||||||
=========================
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||||||
`repmgr` is licensed under the GPL v3. All of its code and documentation is
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Copyright 2010-2016, 2ndQuadrant Limited. See the files COPYRIGHT and LICENSE for
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details.
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||||||
The development of repmgr has primarily been sponsored by 2ndQuadrant customers.
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||||||
Additional work has been sponsored by the 4CaaST project for cloud computing,
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which has received funding from the European Union's Seventh Framework Programme
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||||||
(FP7/2007-2013) under grant agreement 258862.
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||||||
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|
||||||
Contributions to `repmgr` are welcome, and will be listed in the file `CREDITS`.
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|
||||||
2ndQuadrant Limited requires that any contributions provide a copyright
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|
||||||
assignment and a disclaimer of any work-for-hire ownership claims from the
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|
||||||
employer of the developer. This lets us make sure that all of the repmgr
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|
||||||
distribution remains free code. Please contact info@2ndQuadrant.com for a
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|
||||||
copy of the relevant Copyright Assignment Form.
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||||||
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|
||||||
Code style
|
|
||||||
----------
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||||||
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|
||||||
Code in repmgr is formatted to a consistent style using the following command:
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||||||
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|
||||||
astyle --style=ansi --indent=tab --suffix=none *.c *.h
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||||||
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||||||
Contributors should reformat their code similarly before submitting code to
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||||||
the project, in order to minimize merge conflicts with other work.
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||||||
@@ -1,4 +1,4 @@
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|||||||
Copyright (c) 2010-2016, 2ndQuadrant Limited
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Copyright (c) 2010-2014, 2ndQuadrant Limited
|
||||||
All rights reserved.
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All rights reserved.
|
||||||
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|
||||||
This program is free software: you can redistribute it and/or modify
|
This program is free software: you can redistribute it and/or modify
|
||||||
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|||||||
@@ -1 +0,0 @@
|
|||||||
The contents of this file have been incorporated into the main README.md document.
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|
||||||
171
FAQ.md
171
FAQ.md
@@ -1,171 +0,0 @@
|
|||||||
FAQ - Frequently Asked Questions about repmgr
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|
||||||
=============================================
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||||||
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||||||
This FAQ applies to `repmgr` 3.0 and later.
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||||||
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|
||||||
General
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|
||||||
-------
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||||||
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||||||
- What's the difference between the repmgr versions?
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repmgr 3.x builds on the improved replication facilities added
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in PostgreSQL 9.3, as well as improved automated failover support
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via `repmgrd`, and is not compatible with PostgreSQL 9.2 and earlier.
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||||||
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|
||||||
repmgr 2.x supports PostgreSQL 9.0 onwards. While it is compatible
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|
||||||
with PostgreSQL 9.3 and later, we recommend repmgr v3.
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|
||||||
|
|
||||||
- What's the advantage of using replication slots?
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|
||||||
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|
||||||
Replication slots, introduced in PostgreSQL 9.4, ensure that the
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||||||
master server will retain WAL files until they have been consumed
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||||||
by all standby servers. This makes WAL file management much easier,
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||||||
and if used `repmgr` will no longer insist on a fixed number (default: 5000)
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||||||
of WAL files being preserved.
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||||||
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||||||
(However this does mean that if a standby is no longer connected to the
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|
||||||
master, the master will retain WAL files indefinitely).
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||||||
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|
||||||
- How many replication slots should I define in `max_replication_slots`?
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|
||||||
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|
||||||
Normally at least same number as the number of standbys which will connect
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||||||
to the node. Note that changes to `max_replication_slots` require a server
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||||||
restart to take effect, and as there is no particular penalty for unused
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|
||||||
replication slots, setting a higher figure will make adding new nodes
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||||||
easier.
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|
||||||
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|
||||||
- Does `repmgr` support hash indexes?
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|
||||||
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|
||||||
No. Hash indexes and replication do not mix well and their use is
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|
||||||
explicitly discouraged; see:
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|
||||||
https://www.postgresql.org/docs/current/interactive/sql-createindex.html#AEN74175
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|
||||||
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|
||||||
`repmgr`
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|
||||||
--------
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|
||||||
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|
||||||
- When should I use the --rsync-only option?
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|
||||||
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|
||||||
By default, `repmgr` uses `pg_basebackup` to clone a standby from
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|
||||||
a master. However, `pg_basebackup` copies the entire data directory, which
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|
||||||
can take some time depending on installation size. If you have an
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|
||||||
existing but "stale" standby, `repmgr` can use `rsync` instead,
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|
||||||
which means only changed or added files need to be copied.
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|
||||||
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|
||||||
- Can I register an existing master/standby?
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|
||||||
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|
||||||
Yes, this is no problem.
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|
||||||
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|
||||||
- How can a failed master be re-added as a standby?
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|
||||||
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|
||||||
This is a two-stage process. First, the failed master's data directory
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|
||||||
must be re-synced with the current master; secondly the failed master
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|
||||||
needs to be re-registered as a standby. The section "Converting a failed
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|
||||||
master to a standby" in the `README.md` file contains more detailed
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|
||||||
information on this process.
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|
||||||
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|
||||||
- Is there an easy way to check my master server is correctly configured
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|
||||||
for use with `repmgr`?
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||||||
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|
||||||
Yes - execute `repmgr` with the `--check-upstream-config` option, and it
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|
||||||
will let you know which items in `postgresql.conf` need to be modified.
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|
||||||
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|
||||||
- Even though I specified custom `rsync` options, `repmgr` appends
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|
||||||
the `--checksum` - why?
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|
||||||
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|
||||||
When syncing a stale data directory from an active server, it's
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|
||||||
essential that `rsync` compares the content of files rather than
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|
||||||
just timestamp and size, to ensure that all changed files are
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|
||||||
copied and prevent corruption.
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|
||||||
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|
||||||
- When cloning a standby, how can I prevent `repmgr` from copying
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|
||||||
`postgresql.conf` and `pg_hba.conf` from the PostgreSQL configuration
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|
||||||
directory in `/etc`?
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|
||||||
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|
||||||
Use the command line option `--ignore-external-config-files`
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|
||||||
|
|
||||||
- How can I prevent `repmgr` from copying local configuration files
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|
||||||
in the data directory?
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|
||||||
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|
||||||
If you're updating an existing but stale data directory which
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|
||||||
contains e.g. configuration files you don't want to be overwritten
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|
||||||
with the same file from the master, specify the files in the
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|
||||||
`rsync_options` configuration option, e.g.
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|
||||||
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|
||||||
rsync_options=--exclude=postgresql.local.conf
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|
||||||
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|
||||||
This option is only available when using the `--rsync-only` option.
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|
||||||
|
|
||||||
- How can I make the witness server use a particular port?
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|
||||||
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|
||||||
By default the witness server is configured to use port 5499; this
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|
||||||
is intended to support running the witness server as a separate
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|
||||||
instance on a normal node server, rather than on its own dedicated server.
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|
||||||
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|
||||||
To specify different port for the witness server, supply the port number
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|
||||||
in the `conninfo` string in `repmgr.conf`
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|
||||||
(repmgr 3.0.1 and earlier: use the `-l/--local-port` option)
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|
||||||
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|
||||||
- Do I need to include `shared_preload_libraries = 'repmgr_funcs'`
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|
||||||
in `postgresql.conf` if I'm not using `repmgrd`?
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|
||||||
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|
||||||
No, the `repmgr_funcs` library is only needed when running `repmgrd`.
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|
||||||
If you later decide to run `repmgrd`, you just need to add
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|
||||||
`shared_preload_libraries = 'repmgr_funcs'` and restart PostgreSQL.
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|
||||||
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|
||||||
- I've provided replication permission for the `repmgr` user in `pg_hba.conf`
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|
||||||
but `repmgr`/`repmgrd` complains it can't connect to the server... Why?
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|
||||||
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|
||||||
`repmgr`/`repmgrd` need to be able to connect to the repmgr database
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|
||||||
with a normal connection to query metadata. The `replication` connection
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|
||||||
permission is for PostgreSQL's streaming replication and doesn't
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|
||||||
necessarily need to be the `repmgr` user.
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|
||||||
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|
||||||
- When cloning a standby, why do I need to provide the connection parameters
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|
||||||
for the primary server on the command line, not in the configuration file?
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|
||||||
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|
||||||
Cloning a standby is a one-time action; the role of the server being cloned
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|
||||||
from could change, so fixing it in the configuration file would create
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|
||||||
confusion. If `repmgr` needs to establish a connection to the primary
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|
||||||
server, it can retrieve this from the `repl_nodes` table or if necessary
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|
||||||
scan the replication cluster until it locates the active primary.
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|
||||||
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|
||||||
- Why is there no foreign key on the `node_id` column in the `repl_events`
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|
||||||
table?
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|
||||||
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|
||||||
Under some circumstances event notifications can be generated for servers
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|
||||||
which have not yet been registered; it's also useful to retain a record
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|
||||||
of events which includes servers removed from the replication cluster
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|
||||||
which no longer have an entry in the `repl_nodes` table.
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|
||||||
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|
||||||
`repmgrd`
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|
||||||
---------
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|
||||||
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|
||||||
- Do I need a witness server?
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|
||||||
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|
||||||
Not necessarily. However if you have an uneven number of nodes spread
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|
||||||
over more than one network segment, a witness server will enable
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|
||||||
better handling of a 'split brain' situation by providing a "casting
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|
||||||
vote" on the preferred network segment.
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|
||||||
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|
||||||
- How can I prevent a node from ever being promoted to master?
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|
||||||
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|
||||||
In `repmgr.conf`, set its priority to a value of 0 or less.
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|
||||||
|
|
||||||
- Does `repmgrd` support delayed standbys?
|
|
||||||
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|
||||||
`repmgrd` can monitor delayed standbys - those set up with
|
|
||||||
`recovery_min_apply_delay` set to a non-zero value in `recovery.conf` -
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|
||||||
but as it's not currently possible to directly examine the value
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|
||||||
applied to the standby, `repmgrd` may not be able to properly evaluate
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|
||||||
the node as a promotion candidate.
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|
||||||
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|
||||||
We recommend that delayed standbys are explicitly excluded from promotion
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|
||||||
by setting `priority` to 0 in `repmgr.conf`.
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|
||||||
|
|
||||||
Note that after registering a delayed standby, `repmgrd` will only start
|
|
||||||
once the metadata added in the master node has been replicated.
|
|
||||||
|
|
||||||
- How can I get `repmgrd` to rotate its logfile?
|
|
||||||
|
|
||||||
Configure your system's `logrotate` service to do this; see example
|
|
||||||
in README.md
|
|
||||||
136
HISTORY
136
HISTORY
@@ -1,131 +1,3 @@
|
|||||||
3.1.5 2016-08-15
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|
||||||
repmgrd: in a failover situation, prevent endless looping when
|
|
||||||
attempting to establish the status of a node with
|
|
||||||
`failover=manual` (Ian)
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|
||||||
repmgrd: improve handling of failover events on standbys with
|
|
||||||
`failover=manual`, and create a new event notification
|
|
||||||
for this, `standby_disconnect_manual` (Ian)
|
|
||||||
repmgr: add further event notifications (Gianni)
|
|
||||||
repmgr: when executing `standby switchover`, don't collect remote
|
|
||||||
command output unless required (Gianni, Ian)
|
|
||||||
repmgrd: improve standby monitoring query (Ian, based on suggestion
|
|
||||||
from Álvaro)
|
|
||||||
repmgr: various command line handling improvements (Ian)
|
|
||||||
|
|
||||||
3.1.4 2016-07-12
|
|
||||||
repmgr: new configuration option for setting "restore_command"
|
|
||||||
in the recovery.conf file generated by repmgr (Martín)
|
|
||||||
repmgr: add --csv option to "repmgr cluster show" (Gianni)
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|
||||||
repmgr: enable provision of a conninfo string as the -d/--dbname
|
|
||||||
parameter, similar to other PostgreSQL utilities (Ian)
|
|
||||||
repmgr: during switchover operations improve detection of
|
|
||||||
demotion candidate shutdown (Ian)
|
|
||||||
various bugfixes and documentation updates (Ian, Martín)
|
|
||||||
|
|
||||||
3.1.3 2016-05-17
|
|
||||||
repmgrd: enable monitoring when a standby is catching up by
|
|
||||||
replaying archived WAL (Ian)
|
|
||||||
repmgrd: when upstream_node_id is NULL, assume upstream node
|
|
||||||
to be current master (Ian)
|
|
||||||
repmgrd: check for reappearance of the master node if standby
|
|
||||||
promotion fails (Ian)
|
|
||||||
improve handling of rsync failure conditions (Martín)
|
|
||||||
|
|
||||||
3.1.2 2016-04-12
|
|
||||||
Fix pg_ctl path generation in do_standby_switchover() (Ian)
|
|
||||||
Regularly sync witness server repl_nodes table (Ian)
|
|
||||||
Documentation improvements (Gianni, dhyannataraj)
|
|
||||||
(Experimental) ensure repmgr handles failover slots when copying
|
|
||||||
in rsync mode (Craig, Ian)
|
|
||||||
rsync mode handling fixes (Martín)
|
|
||||||
Enable repmgr to compile against 9.6devel (Ian)
|
|
||||||
|
|
||||||
3.1.1 2016-02-24
|
|
||||||
Add '-P/--pwprompt' option for "repmgr create witness" (Ian)
|
|
||||||
Prevent repmgr/repmgrd running as root (Ian)
|
|
||||||
|
|
||||||
3.1.0 2016-02-01
|
|
||||||
Add "repmgr standby switchover" command (Ian)
|
|
||||||
Revised README file (Ian)
|
|
||||||
Remove requirement for 'archive_mode' to be enabled (Ian)
|
|
||||||
Improve -?/--help output, showing default values if relevant (Ian)
|
|
||||||
Various bugfixes to command line/configuration parameter handling (Ian)
|
|
||||||
|
|
||||||
3.0.3 2016-01-04
|
|
||||||
Create replication slot if required before base backup is run (Abhijit)
|
|
||||||
standy clone: when using rsync, clean up "pg_replslot" directory (Ian)
|
|
||||||
Improve --help output (Ian)
|
|
||||||
Improve config file parsing (Ian)
|
|
||||||
Various logging output improvements, including explicit HINTS (Ian)
|
|
||||||
Add --log-level to explicitly set log level on command line (Ian)
|
|
||||||
Repurpose --verbose to display extra log output (Ian)
|
|
||||||
Add --terse to hide hints and other non-critical output (Ian)
|
|
||||||
Reference internal functions with explicit catalog path (Ian)
|
|
||||||
When following a new primary, have repmgr (not repmgrd) create the new slot (Ian)
|
|
||||||
Add /etc/repmgr.conf as a default configuration file location (Ian)
|
|
||||||
Prevent repmgrd's -v/--verbose option expecting a parameter (Ian)
|
|
||||||
Prevent invalid replication_lag values being written to the monitoring table (Ian)
|
|
||||||
Improve repmgrd behaviour when monitored standby node is temporarily
|
|
||||||
unavailable (Martín)
|
|
||||||
|
|
||||||
3.0.2 2015-10-02
|
|
||||||
Improve handling of --help/--version options; and improve help output (Ian)
|
|
||||||
Improve handling of situation where logfile can't be opened (Ian)
|
|
||||||
Always pass -D/--pgdata option to pg_basebackup (Ian)
|
|
||||||
Bugfix: standby clone --force does not empty pg_xlog (Gianni)
|
|
||||||
Bugfix: autofailover with reconnect_attempts > 1 (Gianni)
|
|
||||||
Bugfix: ignore comments after values (soxwellfb)
|
|
||||||
Bugfix: handle string values in 'node' parameter correctly (Gregory Duchatelet)
|
|
||||||
Allow repmgr to be compiled with a newer libpq (Marco)
|
|
||||||
Bugfix: call update_node_record_set_upstream() for STANDBY FOLLOW (Tomas)
|
|
||||||
Update `repmgr --help` output (per Github report from renard)
|
|
||||||
Update tablespace remapping in --rsync-only mode for 9.5 and later (Ian)
|
|
||||||
Deprecate `-l/--local-port` option - the port can be extracted
|
|
||||||
from the conninfo string in repmgr.conf (Ian)
|
|
||||||
Add STANDBY UNREGISTER (Vik Fearing)
|
|
||||||
Don't fail with error when registering master if schema already defined (Ian)
|
|
||||||
Fixes to whitespace handling when parsing config file (Ian)
|
|
||||||
|
|
||||||
3.0.1 2015-04-16
|
|
||||||
Prevent repmgrd from looping infinitely if node was not registered (Ian)
|
|
||||||
When promoting a standby, have repmgr (not repmgrd) handle metadata updates (Ian)
|
|
||||||
Re-use replication slot if it already exists (Ian)
|
|
||||||
Prevent a test SSH connection being made when not needed (Ian)
|
|
||||||
Correct monitoring table column names (Ian)
|
|
||||||
|
|
||||||
3.0 2015-03-27
|
|
||||||
Require PostgreSQL 9.3 or later (Ian)
|
|
||||||
Use `pg_basebackup` by default (instead of `rsync`) to clone standby servers (Ian)
|
|
||||||
Use `pg_ctl promote` to promote a standby to primary
|
|
||||||
Enable tablespace remapping using `pg_basebackup` (in PostgreSQL 9.3 with `rsync`) (Ian)
|
|
||||||
Support cascaded standbys (Ian)
|
|
||||||
"pg_bindir" no longer required as a configuration parameter (Ian)
|
|
||||||
Enable replication slots to be used (PostgreSQL 9.4 and later (Ian)
|
|
||||||
Command line option "--check-upstream-config" (Ian)
|
|
||||||
Add event logging table and option to execute an external program when an event occurs (Ian)
|
|
||||||
General usability and logging message improvements (Ian)
|
|
||||||
Code consolidation and cleanup (Ian)
|
|
||||||
|
|
||||||
2.0.3 2015-04-16
|
|
||||||
Add -S/--superuser option for witness database creation Ian)
|
|
||||||
Add -c/--fast-checkpoint option for cloning (Christoph)
|
|
||||||
Add option "--initdb-no-pwprompt" (Ian)
|
|
||||||
|
|
||||||
2.0.2 2015-02-17
|
|
||||||
Add "--checksum" in rsync when using "--force" (Jaime)
|
|
||||||
Use createdb/createuser instead of psql (Jaime)
|
|
||||||
Fixes to witness creation and monitoring (wamonite)
|
|
||||||
Use default master port if none supplied (Martín)
|
|
||||||
Documentation fixes and improvements (Ian)
|
|
||||||
|
|
||||||
2.0.1 2014-07-16
|
|
||||||
Documentation fixes and new QUICKSTART file (Ian)
|
|
||||||
Explicitly specify directories to ignore when cloning (Ian)
|
|
||||||
Fix log level for some log messages (Ian)
|
|
||||||
RHEL/CentOS specfile, init script and Makefile fixes (Nathan Van Overloop)
|
|
||||||
Debian init script and config file documentation fixes (József Kószó)
|
|
||||||
Typo fixes (Riegie Godwin Jeyaranchen, PriceChild)
|
|
||||||
|
|
||||||
2.0stable 2014-01-30
|
2.0stable 2014-01-30
|
||||||
Documentation fixes (Christian)
|
Documentation fixes (Christian)
|
||||||
General refactoring, code quality improvements and stabilization work (Christian)
|
General refactoring, code quality improvements and stabilization work (Christian)
|
||||||
@@ -153,15 +25,15 @@
|
|||||||
Make the monitoring optional and turned off by default, it can be turned on with --monitoring-history switch (Jaime)
|
Make the monitoring optional and turned off by default, it can be turned on with --monitoring-history switch (Jaime)
|
||||||
Add tunables to specify number of retries to reconnect to master and the time between them (Jaime)
|
Add tunables to specify number of retries to reconnect to master and the time between them (Jaime)
|
||||||
|
|
||||||
1.2.0 2012-07-27
|
1.2.0 2012-07-27
|
||||||
Test ssh connection before trying to rsync (Cédric)
|
Test ssh connection before trying to rsync (Cédric)
|
||||||
Add CLUSTER SHOW command (Carlo)
|
Add CLUSTER SHOW command (Carlo)
|
||||||
Add CLUSTER CLEANUP command (Jaime)
|
Add CLUSTER CLEANUP command (Jaime)
|
||||||
Add function write_primary_conninfo (Marco)
|
Add function write_primary_conninfo (Marco)
|
||||||
Teach repmgr how to get tablespace's location in different pg version (Jaime)
|
Teach repmgr how to get tablespace's location in different pg version (Jaime)
|
||||||
Improve version message (Carlo)
|
Improve version message (Carlo)
|
||||||
|
|
||||||
1.1.1 2012-04-18
|
1.1.1 2012-04-18
|
||||||
Add --ignore-rsync-warning (Cédric)
|
Add --ignore-rsync-warning (Cédric)
|
||||||
Add strnlen for compatibility with OS X (Greg)
|
Add strnlen for compatibility with OS X (Greg)
|
||||||
Improve performance of the repl_status view (Jaime)
|
Improve performance of the repl_status view (Jaime)
|
||||||
|
|||||||
65
Makefile
65
Makefile
@@ -1,33 +1,24 @@
|
|||||||
#
|
#
|
||||||
# Makefile
|
# Makefile
|
||||||
# Copyright (c) 2ndQuadrant, 2010-2016
|
# Copyright (c) 2ndQuadrant, 2010-2014
|
||||||
|
|
||||||
HEADERS = $(wildcard *.h)
|
|
||||||
|
|
||||||
repmgrd_OBJS = dbutils.o config.o repmgrd.o log.o strutil.o
|
repmgrd_OBJS = dbutils.o config.o repmgrd.o log.o strutil.o
|
||||||
repmgr_OBJS = dbutils.o check_dir.o config.o repmgr.o log.o strutil.o dirmod.o
|
repmgr_OBJS = dbutils.o check_dir.o config.o repmgr.o log.o strutil.o
|
||||||
|
|
||||||
DATA = repmgr.sql uninstall_repmgr.sql
|
DATA = repmgr.sql uninstall_repmgr.sql
|
||||||
|
|
||||||
PG_CPPFLAGS = -I$(libpq_srcdir)
|
PG_CPPFLAGS = -I$(libpq_srcdir)
|
||||||
PG_LIBS = $(libpq_pgport)
|
PG_LIBS = $(libpq_pgport)
|
||||||
|
|
||||||
|
all: repmgrd repmgr
|
||||||
all: repmgrd repmgr
|
|
||||||
$(MAKE) -C sql
|
$(MAKE) -C sql
|
||||||
|
|
||||||
repmgrd: $(repmgrd_OBJS)
|
repmgrd: $(repmgrd_OBJS)
|
||||||
$(CC) -o repmgrd $(CFLAGS) $(repmgrd_OBJS) $(PG_LIBS) $(LDFLAGS) $(LDFLAGS_EX) $(LIBS)
|
$(CC) $(CFLAGS) $(repmgrd_OBJS) $(PG_LIBS) $(LDFLAGS) $(LDFLAGS_EX) $(LIBS) -o repmgrd
|
||||||
$(MAKE) -C sql
|
$(MAKE) -C sql
|
||||||
|
|
||||||
repmgr: $(repmgr_OBJS)
|
repmgr: $(repmgr_OBJS)
|
||||||
$(CC) -o repmgr $(CFLAGS) $(repmgr_OBJS) $(PG_LIBS) $(LDFLAGS) $(LDFLAGS_EX) $(LIBS)
|
$(CC) $(CFLAGS) $(repmgr_OBJS) $(PG_LIBS) $(LDFLAGS) $(LDFLAGS_EX) $(LIBS) -o repmgr
|
||||||
|
|
||||||
# Make all objects depend on all include files. This is a bit of a
|
|
||||||
# shotgun approach, but the codebase is small enough that a complete rebuild
|
|
||||||
# is very fast anyway.
|
|
||||||
$(repmgr_OBJS): $(HEADERS)
|
|
||||||
$(repmgrd_OBJS): $(HEADERS)
|
|
||||||
|
|
||||||
ifdef USE_PGXS
|
ifdef USE_PGXS
|
||||||
PG_CONFIG = pg_config
|
PG_CONFIG = pg_config
|
||||||
@@ -40,35 +31,17 @@ include $(top_builddir)/src/Makefile.global
|
|||||||
include $(top_srcdir)/contrib/contrib-global.mk
|
include $(top_srcdir)/contrib/contrib-global.mk
|
||||||
endif
|
endif
|
||||||
|
|
||||||
# XXX: This overrides the pgxs install target - we're building two binaries,
|
# XXX: Try to use PROGRAM construct (see pgxs.mk) someday. Right now
|
||||||
# which is not supported by pgxs.mk's PROGRAM construct.
|
# is overriding pgxs install.
|
||||||
install: install_prog install_ext
|
install: install_prog install_ext
|
||||||
|
|
||||||
install_prog:
|
install_prog:
|
||||||
mkdir -p '$(DESTDIR)$(bindir)'
|
$(INSTALL_PROGRAM) repmgrd$(X) '$(DESTDIR)$(bindir)'
|
||||||
$(INSTALL_PROGRAM) repmgrd$(X) '$(DESTDIR)$(bindir)/'
|
$(INSTALL_PROGRAM) repmgr$(X) '$(DESTDIR)$(bindir)'
|
||||||
$(INSTALL_PROGRAM) repmgr$(X) '$(DESTDIR)$(bindir)/'
|
|
||||||
|
|
||||||
install_ext:
|
install_ext:
|
||||||
$(MAKE) -C sql install
|
$(MAKE) -C sql install
|
||||||
|
|
||||||
# Distribution-specific package building targets
|
|
||||||
# ----------------------------------------------
|
|
||||||
#
|
|
||||||
# XXX we recommend using the PGDG-supplied packages where possible;
|
|
||||||
# see README.md for details.
|
|
||||||
|
|
||||||
install_rhel:
|
|
||||||
mkdir -p '$(DESTDIR)/etc/init.d/'
|
|
||||||
$(INSTALL_PROGRAM) RHEL/repmgrd.init '$(DESTDIR)/etc/init.d/repmgrd'
|
|
||||||
mkdir -p '$(DESTDIR)/etc/sysconfig/'
|
|
||||||
$(INSTALL_PROGRAM) RHEL/repmgrd.sysconfig '$(DESTDIR)/etc/sysconfig/repmgrd'
|
|
||||||
mkdir -p '$(DESTDIR)/etc/repmgr/'
|
|
||||||
$(INSTALL_PROGRAM) repmgr.conf.sample '$(DESTDIR)/etc/repmgr/'
|
|
||||||
mkdir -p '$(DESTDIR)/usr/bin/'
|
|
||||||
$(INSTALL_PROGRAM) repmgrd$(X) '$(DESTDIR)/usr/bin/'
|
|
||||||
$(INSTALL_PROGRAM) repmgr$(X) '$(DESTDIR)/usr/bin/'
|
|
||||||
|
|
||||||
ifneq (,$(DATA)$(DATA_built))
|
ifneq (,$(DATA)$(DATA_built))
|
||||||
@for file in $(addprefix $(srcdir)/, $(DATA)) $(DATA_built); do \
|
@for file in $(addprefix $(srcdir)/, $(DATA)) $(DATA_built); do \
|
||||||
echo "$(INSTALL_DATA) $$file '$(DESTDIR)$(datadir)/$(datamoduledir)'"; \
|
echo "$(INSTALL_DATA) $$file '$(DESTDIR)$(datadir)/$(datamoduledir)'"; \
|
||||||
@@ -82,21 +55,15 @@ clean:
|
|||||||
rm -f repmgr
|
rm -f repmgr
|
||||||
$(MAKE) -C sql clean
|
$(MAKE) -C sql clean
|
||||||
|
|
||||||
# Get correct version numbers and install paths, depending on your postgres version
|
|
||||||
PG_VERSION = $(shell pg_config --version | cut -d ' ' -f 2 | cut -d '.' -f 1,2)
|
|
||||||
REPMGR_VERSION = $(shell grep REPMGR_VERSION version.h | cut -d ' ' -f 3 | cut -d '"' -f 2)
|
|
||||||
PKGLIBDIR = $(shell pg_config --pkglibdir)
|
|
||||||
SHAREDIR = $(shell pg_config --sharedir)
|
|
||||||
|
|
||||||
deb: repmgrd repmgr
|
deb: repmgrd repmgr
|
||||||
mkdir -p ./debian/usr/bin
|
mkdir -p ./debian/usr/bin
|
||||||
cp repmgrd repmgr ./debian/usr/bin/
|
cp repmgrd repmgr ./debian/usr/bin/
|
||||||
mkdir -p ./debian$(SHAREDIR)/contrib/
|
mkdir -p ./debian/usr/share/postgresql/9.0/contrib/
|
||||||
cp sql/repmgr_funcs.sql ./debian$(SHAREDIR)/contrib/
|
cp sql/repmgr_funcs.sql ./debian/usr/share/postgresql/9.0/contrib/
|
||||||
cp sql/uninstall_repmgr_funcs.sql ./debian$(SHAREDIR)/contrib/
|
cp sql/uninstall_repmgr_funcs.sql ./debian/usr/share/postgresql/9.0/contrib/
|
||||||
mkdir -p ./debian$(PKGLIBDIR)/
|
mkdir -p ./debian/usr/lib/postgresql/9.0/lib/
|
||||||
cp sql/repmgr_funcs.so ./debian$(PKGLIBDIR)/
|
cp sql/repmgr_funcs.so ./debian/usr/lib/postgresql/9.0/lib/
|
||||||
dpkg-deb --build debian
|
dpkg-deb --build debian
|
||||||
mv debian.deb ../postgresql-repmgr-$(PG_VERSION)_$(REPMGR_VERSION).deb
|
mv debian.deb ../postgresql-repmgr-9.0_1.0.0.deb
|
||||||
rm -rf ./debian/usr
|
rm -rf ./debian/usr
|
||||||
|
|
||||||
|
|||||||
127
PACKAGES.md
127
PACKAGES.md
@@ -1,127 +0,0 @@
|
|||||||
Packaging
|
|
||||||
=========
|
|
||||||
|
|
||||||
Notes on RedHat Linux, Fedora, and CentOS Builds
|
|
||||||
------------------------------------------------
|
|
||||||
|
|
||||||
The RPM packages of PostgreSQL put `pg_config` into the `postgresql-devel`
|
|
||||||
package, not the main server one. And if you have a RPM install of PostgreSQL
|
|
||||||
9.0, the entire PostgreSQL binary directory will not be in your PATH by default
|
|
||||||
either. Individual utilities are made available via the `alternatives`
|
|
||||||
mechanism, but not all commands will be wrapped that way. The files installed
|
|
||||||
by repmgr will certainly not be in the default PATH for the postgres user
|
|
||||||
on such a system. They will instead be in /usr/pgsql-9.0/bin/ on this
|
|
||||||
type of system.
|
|
||||||
|
|
||||||
When building repmgr against a RPM packaged build, you may discover that some
|
|
||||||
development packages are needed as well. The following build errors can
|
|
||||||
occur:
|
|
||||||
|
|
||||||
/usr/bin/ld: cannot find -lxslt
|
|
||||||
/usr/bin/ld: cannot find -lpam
|
|
||||||
|
|
||||||
Install the following packages to correct those:
|
|
||||||
|
|
||||||
|
|
||||||
yum install libxslt-devel
|
|
||||||
yum install pam-devel
|
|
||||||
|
|
||||||
If building repmgr as a regular user, then doing the install into the system
|
|
||||||
directories using sudo, the syntax is hard. `pg_config` won't be in root's
|
|
||||||
path either. The following recipe should work:
|
|
||||||
|
|
||||||
sudo PATH="/usr/pgsql-9.0/bin:$PATH" make USE_PGXS=1 install
|
|
||||||
|
|
||||||
|
|
||||||
Issues with 32 and 64 bit RPMs
|
|
||||||
------------------------------
|
|
||||||
|
|
||||||
If when building, you receive a series of errors of this form:
|
|
||||||
|
|
||||||
/usr/bin/ld: skipping incompatible /usr/pgsql-9.0/lib/libpq.so when searching for -lpq
|
|
||||||
|
|
||||||
This is likely because you have both the 32 and 64 bit versions of the
|
|
||||||
`postgresql90-devel` package installed. You can check that like this:
|
|
||||||
|
|
||||||
rpm -qa --queryformat '%{NAME}\t%{ARCH}\n' | grep postgresql90-devel
|
|
||||||
|
|
||||||
And if two packages appear, one for i386 and one for x86_64, that's not supposed
|
|
||||||
to be allowed.
|
|
||||||
|
|
||||||
This can happen when using the PGDG repo to install that package;
|
|
||||||
here is an example sessions demonstrating the problem case appearing:
|
|
||||||
|
|
||||||
|
|
||||||
# yum install postgresql-devel
|
|
||||||
..
|
|
||||||
Setting up Install Process
|
|
||||||
Resolving Dependencies
|
|
||||||
--> Running transaction check
|
|
||||||
---> Package postgresql90-devel.i386 0:9.0.2-2PGDG.rhel5 set to be updated
|
|
||||||
---> Package postgresql90-devel.x86_64 0:9.0.2-2PGDG.rhel5 set to be updated
|
|
||||||
--> Finished Dependency Resolution
|
|
||||||
|
|
||||||
Dependencies Resolved
|
|
||||||
|
|
||||||
=========================================================================
|
|
||||||
Package Arch Version Repository Size
|
|
||||||
=========================================================================
|
|
||||||
Installing:
|
|
||||||
postgresql90-devel i386 9.0.2-2PGDG.rhel5 pgdg90 1.5 M
|
|
||||||
postgresql90-devel x86_64 9.0.2-2PGDG.rhel5 pgdg90 1.6 M
|
|
||||||
|
|
||||||
|
|
||||||
Note how both the i386 and x86_64 platform architectures are selected for
|
|
||||||
installation. Your main PostgreSQL package will only be compatible with one of
|
|
||||||
those, and if the repmgr build finds the wrong postgresql90-devel these
|
|
||||||
"skipping incompatible" messages appear.
|
|
||||||
|
|
||||||
In this case, you can temporarily remove both packages, then just install the
|
|
||||||
correct one for your architecture. Example:
|
|
||||||
|
|
||||||
rpm -e postgresql90-devel --allmatches
|
|
||||||
yum install postgresql90-devel-9.0.2-2PGDG.rhel5.x86_64
|
|
||||||
|
|
||||||
Instead just deleting the package from the wrong platform might not leave behind
|
|
||||||
the correct files, due to the way in which these accidentally happen to interact.
|
|
||||||
If you already tried to build repmgr before doing this, you'll need to do:
|
|
||||||
|
|
||||||
make USE_PGXS=1 clean
|
|
||||||
|
|
||||||
to get rid of leftover files from the wrong architecture.
|
|
||||||
|
|
||||||
Notes on Ubuntu, Debian or other Debian-based Builds
|
|
||||||
----------------------------------------------------
|
|
||||||
|
|
||||||
The Debian packages of PostgreSQL put `pg_config` into the development package
|
|
||||||
called `postgresql-server-dev-$version`.
|
|
||||||
|
|
||||||
When building repmgr against a Debian packages build, you may discover that some
|
|
||||||
development packages are needed as well. You will need the following development
|
|
||||||
packages installed:
|
|
||||||
|
|
||||||
sudo apt-get install libxslt-dev libxml2-dev libpam-dev libedit-dev
|
|
||||||
|
|
||||||
If you're using Debian packages for PostgreSQL and are building repmgr with the
|
|
||||||
USE_PGXS option you also need to install the corresponding development package:
|
|
||||||
|
|
||||||
sudo apt-get install postgresql-server-dev-9.0
|
|
||||||
|
|
||||||
If you build and install repmgr manually it will not be on the system path. The
|
|
||||||
binaries will be installed in /usr/lib/postgresql/$version/bin/ which is not on
|
|
||||||
the default path. The reason behind this is that Ubuntu/Debian systems manage
|
|
||||||
multiple installed versions of PostgreSQL on the same system through a wrapper
|
|
||||||
called pg_wrapper and repmgr is not (yet) known to this wrapper.
|
|
||||||
|
|
||||||
You can solve this in many different ways, the most Debian like is to make an
|
|
||||||
alternate for repmgr and repmgrd:
|
|
||||||
|
|
||||||
sudo update-alternatives --install /usr/bin/repmgr repmgr /usr/lib/postgresql/9.0/bin/repmgr 10
|
|
||||||
sudo update-alternatives --install /usr/bin/repmgrd repmgrd /usr/lib/postgresql/9.0/bin/repmgrd 10
|
|
||||||
|
|
||||||
You can also make a deb package of repmgr using:
|
|
||||||
|
|
||||||
make USE_PGXS=1 deb
|
|
||||||
|
|
||||||
This will build a Debian package one level up from where you build, normally the
|
|
||||||
same directory that you have your repmgr/ directory in.
|
|
||||||
@@ -1 +0,0 @@
|
|||||||
The contents of this file have been incorporated into the main README.md document.
|
|
||||||
1144
README.rst
Normal file
1144
README.rst
Normal file
File diff suppressed because it is too large
Load Diff
36
SSH-RSYNC.md
36
SSH-RSYNC.md
@@ -1,36 +0,0 @@
|
|||||||
Set up trusted copy between postgres accounts
|
|
||||||
---------------------------------------------
|
|
||||||
|
|
||||||
If you need to use `rsync` to clone standby servers, the `postgres` account
|
|
||||||
on your primary and standby servers must be each able to access the other
|
|
||||||
using SSH without a password.
|
|
||||||
|
|
||||||
First generate an ssh key, using an empty passphrase, and copy the resulting
|
|
||||||
keys and a matching authorization file to a privileged user account on the other
|
|
||||||
system:
|
|
||||||
|
|
||||||
[postgres@node1]$ ssh-keygen -t rsa
|
|
||||||
Generating public/private rsa key pair.
|
|
||||||
Enter file in which to save the key (/var/lib/pgsql/.ssh/id_rsa):
|
|
||||||
Enter passphrase (empty for no passphrase):
|
|
||||||
Enter same passphrase again:
|
|
||||||
Your identification has been saved in /var/lib/pgsql/.ssh/id_rsa.
|
|
||||||
Your public key has been saved in /var/lib/pgsql/.ssh/id_rsa.pub.
|
|
||||||
The key fingerprint is:
|
|
||||||
aa:bb:cc:dd:ee:ff:aa:11:22:33:44:55:66:77:88:99 postgres@db1.domain.com
|
|
||||||
[postgres@node1]$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
|
|
||||||
[postgres@node1]$ chmod go-rwx ~/.ssh/*
|
|
||||||
[postgres@node1]$ cd ~/.ssh
|
|
||||||
[postgres@node1]$ scp id_rsa.pub id_rsa authorized_keys user@node2:
|
|
||||||
|
|
||||||
Login as a user on the other system, and install the files into the `postgres`
|
|
||||||
user's account:
|
|
||||||
|
|
||||||
[user@node2 ~]$ sudo chown postgres.postgres authorized_keys id_rsa.pub id_rsa
|
|
||||||
[user@node2 ~]$ sudo mkdir -p ~postgres/.ssh
|
|
||||||
[user@node2 ~]$ sudo chown postgres.postgres ~postgres/.ssh
|
|
||||||
[user@node2 ~]$ sudo mv authorized_keys id_rsa.pub id_rsa ~postgres/.ssh
|
|
||||||
[user@node2 ~]$ sudo chmod -R go-rwx ~postgres/.ssh
|
|
||||||
|
|
||||||
Now test that ssh in both directions works. You may have to accept some new
|
|
||||||
known hosts in the process.
|
|
||||||
58
TODO
58
TODO
@@ -5,15 +5,10 @@ Known issues in repmgr
|
|||||||
the database server using the ``pg_ctl`` command may accidentally
|
the database server using the ``pg_ctl`` command may accidentally
|
||||||
terminate after their associated ssh session ends.
|
terminate after their associated ssh session ends.
|
||||||
|
|
||||||
* PGPASSFILE may not be passed to pg_basebackup
|
|
||||||
|
|
||||||
|
|
||||||
Planned feature improvements
|
Planned feature improvements
|
||||||
============================
|
============================
|
||||||
|
|
||||||
* Use 'primary' instead of 'master' in documentation and log output
|
* Timeline increases when promoting a standby
|
||||||
for consistency with PostgreSQL documentation. See also commit
|
|
||||||
870b0a53b627eeb9aca1fc14cbafe25b5beafe12.
|
|
||||||
|
|
||||||
* A better check which standby did receive most of the data
|
* A better check which standby did receive most of the data
|
||||||
|
|
||||||
@@ -21,54 +16,3 @@ Planned feature improvements
|
|||||||
algorithm
|
algorithm
|
||||||
|
|
||||||
* include support for delayed standbys
|
* include support for delayed standbys
|
||||||
|
|
||||||
* Create the repmgr user/database on "master register".
|
|
||||||
|
|
||||||
* Use pg_basebackup for the data directory, and ALSO rsync for the
|
|
||||||
configuration files.
|
|
||||||
|
|
||||||
* If no configuration file supplied, search in sensible default locations
|
|
||||||
(currently: current directory and `pg_config --sysconfdir`); if
|
|
||||||
possible this should include the location provided by the package,
|
|
||||||
if installed.
|
|
||||||
|
|
||||||
* repmgrd: if connection to the upstream node fails on startup, optionally
|
|
||||||
retry for a certain period before giving up; this will cover cases when
|
|
||||||
e.g. primary and standby are both starting up, and the standby comes up
|
|
||||||
before the primary. See github issue #80.
|
|
||||||
|
|
||||||
* make old master node ID available for event notification commands
|
|
||||||
(See github issue #80).
|
|
||||||
|
|
||||||
* repmgr standby clone: possibility to use barman instead of performing a new base backup
|
|
||||||
|
|
||||||
* possibility to transform a failed master into a new standby with pg_rewind
|
|
||||||
|
|
||||||
* "repmgr standby switchover" to promote a standby in a controlled manner
|
|
||||||
and convert the existing primary into a standby
|
|
||||||
|
|
||||||
* make repmgrd more robust
|
|
||||||
|
|
||||||
* repmgr: when cloning a standby using pg_basebackup and replication slots are
|
|
||||||
requested, activate the replication slot using pg_receivexlog to negate the
|
|
||||||
need to set `wal_keep_segments` just for the initial clone (9.4 and 9.5).
|
|
||||||
|
|
||||||
* repmgr: enable "standby follow" to point a standby at another standby, not
|
|
||||||
just the replication cluster master (see GitHub #130)
|
|
||||||
|
|
||||||
|
|
||||||
Usability improvements
|
|
||||||
======================
|
|
||||||
|
|
||||||
* repmgr: add interrupt handler, so that if the program is interrupted
|
|
||||||
while running a backup, an attempt can be made to execute pg_stop_backup()
|
|
||||||
on the primary, to prevent an orphaned backup state existing.
|
|
||||||
|
|
||||||
* repmgr: when unregistering a node, delete any entries in the repl_monitoring
|
|
||||||
table.
|
|
||||||
|
|
||||||
* repmgr: for "standby unregister", accept connection parameters for the
|
|
||||||
primary and perform metadata updates (and slot removal) directly on
|
|
||||||
the primary, to allow a shutdown standby to be unregistered
|
|
||||||
(currently the standby must still be running, which means the replication
|
|
||||||
slot can't be dropped).
|
|
||||||
|
|||||||
225
autofailover_quick_setup.rst
Normal file
225
autofailover_quick_setup.rst
Normal file
@@ -0,0 +1,225 @@
|
|||||||
|
=====================================================
|
||||||
|
PostgreSQL Automatic Fail-Over - User Documentation
|
||||||
|
=====================================================
|
||||||
|
|
||||||
|
Automatic Failover
|
||||||
|
==================
|
||||||
|
|
||||||
|
repmgr allows setups for automatic failover when it detects the failure of the master node.
|
||||||
|
Following is a quick setup for this.
|
||||||
|
|
||||||
|
Installation
|
||||||
|
============
|
||||||
|
|
||||||
|
For convenience, we define:
|
||||||
|
|
||||||
|
**node1**
|
||||||
|
is the hostname fully qualified of the Master server, IP 192.168.1.10
|
||||||
|
**node2**
|
||||||
|
is the hostname fully qualified of the Standby server, IP 192.168.1.11
|
||||||
|
**witness**
|
||||||
|
is the hostname fully qualified of the server used for witness, IP 192.168.1.12
|
||||||
|
|
||||||
|
**Note:** It is not recommanded to use name defining status of a server like «masterserver»,
|
||||||
|
this is a name leading to confusion once a failover take place and the Master is
|
||||||
|
now on the «standbyserver».
|
||||||
|
|
||||||
|
Summary
|
||||||
|
-------
|
||||||
|
|
||||||
|
2 PostgreSQL servers are involved in the replication. Automatic fail-over need
|
||||||
|
to vote to decide what server it should promote, thus an odd number is required
|
||||||
|
and a witness-repmgrd is installed in a third server where it uses a PostgreSQL
|
||||||
|
cluster to communicate with other repmgrd daemons.
|
||||||
|
|
||||||
|
1. Install PostgreSQL in all the servers involved (including the server used for
|
||||||
|
witness)
|
||||||
|
|
||||||
|
2. Install repmgr in all the servers involved (including the server used for witness)
|
||||||
|
|
||||||
|
3. Configure the Master PostreSQL
|
||||||
|
|
||||||
|
4. Clone the Master to the Standby using "repmgr standby clone" command
|
||||||
|
|
||||||
|
5. Configure repmgr in all the servers involved (including the server used for witness)
|
||||||
|
|
||||||
|
6. Register Master and Standby nodes
|
||||||
|
|
||||||
|
7. Initiate witness server
|
||||||
|
|
||||||
|
8. Start the repmgrd daemons in all nodes
|
||||||
|
|
||||||
|
**Note** A complete Hight-Availability design need at least 3 servers to still have
|
||||||
|
a backup node after a first failure.
|
||||||
|
|
||||||
|
Install PostgreSQL
|
||||||
|
------------------
|
||||||
|
|
||||||
|
You can install PostgreSQL using any of the recommended methods. You should ensure
|
||||||
|
it's 9.0 or superior.
|
||||||
|
|
||||||
|
Install repmgr
|
||||||
|
--------------
|
||||||
|
|
||||||
|
Install repmgr following the steps in the README.
|
||||||
|
|
||||||
|
Configure PostreSQL
|
||||||
|
-------------------
|
||||||
|
|
||||||
|
Log in node1.
|
||||||
|
|
||||||
|
Edit the file postgresql.conf and modify the parameters::
|
||||||
|
|
||||||
|
listen_addresses='*'
|
||||||
|
wal_level = 'hot_standby'
|
||||||
|
archive_mode = on
|
||||||
|
archive_command = 'cd .' # we can also use exit 0, anything that
|
||||||
|
# just does nothing
|
||||||
|
max_wal_senders = 10
|
||||||
|
wal_keep_segments = 5000 # 80 GB required on pg_xlog
|
||||||
|
hot_standby = on
|
||||||
|
shared_preload_libraries = 'repmgr_funcs'
|
||||||
|
|
||||||
|
Edit the file pg_hba.conf and add lines for the replication::
|
||||||
|
|
||||||
|
host repmgr repmgr 127.0.0.1/32 trust
|
||||||
|
host repmgr repmgr 192.168.1.10/30 trust
|
||||||
|
host replication all 192.168.1.10/30 trust
|
||||||
|
|
||||||
|
**Note:** It is also possible to use a password authentication (md5), .pgpass file
|
||||||
|
should be edited to allow connection between each node.
|
||||||
|
|
||||||
|
Create the user and database to manage replication::
|
||||||
|
|
||||||
|
su - postgres
|
||||||
|
createuser -s repmgr
|
||||||
|
createdb -O repmgr repmgr
|
||||||
|
psql -f /usr/share/postgresql/9.0/contrib/repmgr_funcs.sql repmgr
|
||||||
|
|
||||||
|
Restart the PostgreSQL server::
|
||||||
|
|
||||||
|
pg_ctl -D $PGDATA restart
|
||||||
|
|
||||||
|
And check everything is fine in the server log.
|
||||||
|
|
||||||
|
Create the ssh-key for the postgres user and copy it to other servers::
|
||||||
|
|
||||||
|
su - postgres
|
||||||
|
ssh-keygen # /!\ do not use a passphrase /!\
|
||||||
|
cat ~/.ssh/id_rsa.pub > ~/.ssh/authorized_keys
|
||||||
|
chmod 600 ~/.ssh/authorized_keys
|
||||||
|
exit
|
||||||
|
rsync -avz ~postgres/.ssh/authorized_keys node2:~postgres/.ssh/
|
||||||
|
rsync -avz ~postgres/.ssh/authorized_keys witness:~postgres/.ssh/
|
||||||
|
rsync -avz ~postgres/.ssh/id_rsa* node2:~postgres/.ssh/
|
||||||
|
rsync -avz ~postgres/.ssh/id_rsa* witness:~postgres/.ssh/
|
||||||
|
|
||||||
|
Clone Master
|
||||||
|
------------
|
||||||
|
|
||||||
|
Log in node2.
|
||||||
|
|
||||||
|
Clone the node1 (the current Master)::
|
||||||
|
|
||||||
|
su - postgres
|
||||||
|
repmgr -d repmgr -U repmgr -h node1 standby clone
|
||||||
|
|
||||||
|
Start the PostgreSQL server::
|
||||||
|
|
||||||
|
pg_ctl -D $PGDATA start
|
||||||
|
|
||||||
|
And check everything is fine in the server log.
|
||||||
|
|
||||||
|
Configure repmgr
|
||||||
|
----------------
|
||||||
|
|
||||||
|
Log in each server and configure repmgr by editing the file
|
||||||
|
/etc/repmgr/repmgr.conf::
|
||||||
|
|
||||||
|
cluster=my_cluster
|
||||||
|
node=1
|
||||||
|
node_name=earth
|
||||||
|
conninfo='host=192.168.1.10 dbname=repmgr user=repmgr'
|
||||||
|
master_response_timeout=60
|
||||||
|
reconnect_attempts=6
|
||||||
|
reconnect_interval=10
|
||||||
|
failover=automatic
|
||||||
|
promote_command='promote_command.sh'
|
||||||
|
follow_command='repmgr standby follow -f /etc/repmgr/repmgr.conf'
|
||||||
|
|
||||||
|
**cluster**
|
||||||
|
is the name of the current replication.
|
||||||
|
**node**
|
||||||
|
is the number of the current node (1, 2 or 3 in the current example).
|
||||||
|
**node_name**
|
||||||
|
is an identifier for every node.
|
||||||
|
**conninfo**
|
||||||
|
is used to connect to the local PostgreSQL server (where the configuration file is) from any node. In the witness server configuration it is needed to add a 'port=5499' to the conninfo.
|
||||||
|
**master_response_timeout**
|
||||||
|
is the maximum amount of time we are going to wait before deciding the master has died and start failover procedure.
|
||||||
|
**reconnect_attempts**
|
||||||
|
is the number of times we will try to reconnect to master after a failure has been detected and before start failover procedure.
|
||||||
|
**reconnect_interval**
|
||||||
|
is the amount of time between retries to reconnect to master after a failure has been detected and before start failover procedure.
|
||||||
|
**failover**
|
||||||
|
configure behavior: *manual* or *automatic*.
|
||||||
|
**promote_command**
|
||||||
|
the command executed to do the failover (including the PostgreSQL failover itself). The command must return 0 on success.
|
||||||
|
**follow_command**
|
||||||
|
the command executed to address the current standby to another Master. The command must return 0 on success.
|
||||||
|
|
||||||
|
Register Master and Standby
|
||||||
|
---------------------------
|
||||||
|
|
||||||
|
Log in node1.
|
||||||
|
|
||||||
|
Register the node as Master::
|
||||||
|
|
||||||
|
su - postgres
|
||||||
|
repmgr -f /etc/repmgr/repmgr.conf master register
|
||||||
|
|
||||||
|
Log in node2. Register it as a standby::
|
||||||
|
|
||||||
|
su - postgres
|
||||||
|
repmgr -f /etc/repmgr/repmgr.conf standby register
|
||||||
|
|
||||||
|
Initialize witness server
|
||||||
|
-------------------------
|
||||||
|
|
||||||
|
Log in witness.
|
||||||
|
|
||||||
|
Initialize the witness server::
|
||||||
|
|
||||||
|
su - postgres
|
||||||
|
repmgr -d repmgr -U repmgr -h 192.168.1.10 -D $WITNESS_PGDATA -f /etc/repmgr/repmgr.conf witness create
|
||||||
|
|
||||||
|
It needs information to connect to the master to copy the configuration of the cluster, also it needs to know where it should initialize it's own $PGDATA.
|
||||||
|
As part of the procees it also ask for the superuser password so it can connect when needed.
|
||||||
|
|
||||||
|
Start the repmgrd daemons
|
||||||
|
-------------------------
|
||||||
|
|
||||||
|
Log in node2 and witness.
|
||||||
|
|
||||||
|
su - postgres
|
||||||
|
repmgrd -f /etc/repmgr/repmgr.conf > /var/log/postgresql/repmgr.log 2>&1
|
||||||
|
|
||||||
|
**Note:** The Master does not need a repmgrd daemon.
|
||||||
|
|
||||||
|
|
||||||
|
Suspend Automatic behavior
|
||||||
|
==========================
|
||||||
|
|
||||||
|
Edit the repmgr.conf of the node to remove from automatic processing and change::
|
||||||
|
|
||||||
|
failover=manual
|
||||||
|
|
||||||
|
Then, signal repmgrd daemon::
|
||||||
|
|
||||||
|
su - postgres
|
||||||
|
kill -HUP `pidoff repmgrd`
|
||||||
|
|
||||||
|
Usage
|
||||||
|
=====
|
||||||
|
|
||||||
|
The repmgr documentation is in the README file (how to build, options, etc.)
|
||||||
190
check_dir.c
190
check_dir.c
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* check_dir.c - Directories management functions
|
* check_dir.c - Directories management functions
|
||||||
* Copyright (C) 2ndQuadrant, 2010-2016
|
* Copyright (C) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
* This program is free software: you can redistribute it and/or modify
|
* This program is free software: you can redistribute it and/or modify
|
||||||
* it under the terms of the GNU General Public License as published by
|
* it under the terms of the GNU General Public License as published by
|
||||||
@@ -23,19 +23,14 @@
|
|||||||
#include <errno.h>
|
#include <errno.h>
|
||||||
#include <stdio.h>
|
#include <stdio.h>
|
||||||
#include <string.h>
|
#include <string.h>
|
||||||
#include <ftw.h>
|
|
||||||
|
|
||||||
/* NB: postgres_fe must be included BEFORE check_dir */
|
/* NB: postgres_fe must be included BEFORE check_dir */
|
||||||
#include <libpq-fe.h>
|
#include "postgres_fe.h"
|
||||||
#include <postgres_fe.h>
|
|
||||||
|
|
||||||
#include "check_dir.h"
|
#include "check_dir.h"
|
||||||
|
|
||||||
#include "strutil.h"
|
#include "strutil.h"
|
||||||
#include "log.h"
|
#include "log.h"
|
||||||
|
|
||||||
static bool _create_pg_dir(char *dir, bool force, bool for_witness);
|
|
||||||
static int unlink_dir_callback(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf);
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* make sure the directory either doesn't exist or is empty
|
* make sure the directory either doesn't exist or is empty
|
||||||
* we use this function to check the new data directory and
|
* we use this function to check the new data directory and
|
||||||
@@ -49,9 +44,9 @@ static int unlink_dir_callback(const char *fpath, const struct stat *sb, int typ
|
|||||||
int
|
int
|
||||||
check_dir(char *dir)
|
check_dir(char *dir)
|
||||||
{
|
{
|
||||||
DIR *chkdir;
|
DIR *chkdir;
|
||||||
struct dirent *file;
|
struct dirent *file;
|
||||||
int result = 1;
|
int result = 1;
|
||||||
|
|
||||||
errno = 0;
|
errno = 0;
|
||||||
|
|
||||||
@@ -63,7 +58,7 @@ check_dir(char *dir)
|
|||||||
while ((file = readdir(chkdir)) != NULL)
|
while ((file = readdir(chkdir)) != NULL)
|
||||||
{
|
{
|
||||||
if (strcmp(".", file->d_name) == 0 ||
|
if (strcmp(".", file->d_name) == 0 ||
|
||||||
strcmp("..", file->d_name) == 0)
|
strcmp("..", file->d_name) == 0)
|
||||||
{
|
{
|
||||||
/* skip this and parent directory */
|
/* skip this and parent directory */
|
||||||
continue;
|
continue;
|
||||||
@@ -76,7 +71,6 @@ check_dir(char *dir)
|
|||||||
}
|
}
|
||||||
|
|
||||||
#ifdef WIN32
|
#ifdef WIN32
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but not in
|
* This fix is in mingw cvs (runtime/mingwex/dirent.c rev 1.4), but not in
|
||||||
* released version
|
* released version
|
||||||
@@ -88,29 +82,29 @@ check_dir(char *dir)
|
|||||||
closedir(chkdir);
|
closedir(chkdir);
|
||||||
|
|
||||||
if (errno != 0)
|
if (errno != 0)
|
||||||
return -1; /* some kind of I/O error? */
|
return -1; /* some kind of I/O error? */
|
||||||
|
|
||||||
return result;
|
return result;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Create directory with error log message when failing
|
* Create directory
|
||||||
*/
|
*/
|
||||||
bool
|
bool
|
||||||
create_dir(char *dir)
|
create_directory(char *dir)
|
||||||
{
|
{
|
||||||
if (mkdir_p(dir, 0700) == 0)
|
if (mkdir_p(dir, 0700) == 0)
|
||||||
return true;
|
return true;
|
||||||
|
|
||||||
log_err(_("unable to create directory \"%s\": %s\n"),
|
log_err(_("Could not create directory \"%s\": %s\n"),
|
||||||
dir, strerror(errno));
|
dir, strerror(errno));
|
||||||
|
|
||||||
return false;
|
return false;
|
||||||
}
|
}
|
||||||
|
|
||||||
bool
|
bool
|
||||||
set_dir_permissions(char *dir)
|
set_directory_permissions(char *dir)
|
||||||
{
|
{
|
||||||
return (chmod(dir, 0700) != 0) ? false : true;
|
return (chmod(dir, 0700) != 0) ? false : true;
|
||||||
}
|
}
|
||||||
@@ -133,10 +127,10 @@ mkdir_p(char *path, mode_t omode)
|
|||||||
{
|
{
|
||||||
struct stat sb;
|
struct stat sb;
|
||||||
mode_t numask,
|
mode_t numask,
|
||||||
oumask;
|
oumask;
|
||||||
int first,
|
int first,
|
||||||
last,
|
last,
|
||||||
retval;
|
retval;
|
||||||
char *p;
|
char *p;
|
||||||
|
|
||||||
p = path;
|
p = path;
|
||||||
@@ -155,8 +149,8 @@ mkdir_p(char *path, mode_t omode)
|
|||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
else if (p[1] == ':' &&
|
else if (p[1] == ':' &&
|
||||||
((p[0] >= 'a' && p[0] <= 'z') ||
|
((p[0] >= 'a' && p[0] <= 'z') ||
|
||||||
(p[0] >= 'A' && p[0] <= 'Z')))
|
(p[0] >= 'A' && p[0] <= 'Z')))
|
||||||
{
|
{
|
||||||
/* local drive */
|
/* local drive */
|
||||||
p += 2;
|
p += 2;
|
||||||
@@ -227,9 +221,9 @@ bool
|
|||||||
is_pg_dir(char *dir)
|
is_pg_dir(char *dir)
|
||||||
{
|
{
|
||||||
const size_t buf_sz = 8192;
|
const size_t buf_sz = 8192;
|
||||||
char path[buf_sz];
|
char path[buf_sz];
|
||||||
struct stat sb;
|
struct stat sb;
|
||||||
int r;
|
int r;
|
||||||
|
|
||||||
/* test pgdata */
|
/* test pgdata */
|
||||||
xsnprintf(path, buf_sz, "%s/PG_VERSION", dir);
|
xsnprintf(path, buf_sz, "%s/PG_VERSION", dir);
|
||||||
@@ -247,103 +241,67 @@ is_pg_dir(char *dir)
|
|||||||
|
|
||||||
|
|
||||||
bool
|
bool
|
||||||
create_pg_dir(char *dir, bool force)
|
create_pgdir(char *dir, bool force)
|
||||||
{
|
{
|
||||||
return _create_pg_dir(dir, force, false);
|
bool pg_dir = false;
|
||||||
}
|
|
||||||
|
|
||||||
bool
|
|
||||||
create_witness_pg_dir(char *dir, bool force)
|
|
||||||
{
|
|
||||||
return _create_pg_dir(dir, force, true);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static bool
|
|
||||||
_create_pg_dir(char *dir, bool force, bool for_witness)
|
|
||||||
{
|
|
||||||
bool pg_dir = false;
|
|
||||||
|
|
||||||
/* Check this directory could be used as a PGDATA dir */
|
/* Check this directory could be used as a PGDATA dir */
|
||||||
switch (check_dir(dir))
|
switch (check_dir(dir))
|
||||||
{
|
{
|
||||||
case 0:
|
case 0:
|
||||||
/* dir not there, must create it */
|
/* dir not there, must create it */
|
||||||
log_info(_("creating directory \"%s\"...\n"), dir);
|
log_info(_("creating directory \"%s\"...\n"), dir);
|
||||||
|
|
||||||
if (!create_dir(dir))
|
|
||||||
{
|
|
||||||
log_err(_("unable to create directory \"%s\"...\n"),
|
|
||||||
dir);
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
case 1:
|
|
||||||
/* Present but empty, fix permissions and use it */
|
|
||||||
log_info(_("checking and correcting permissions on existing directory %s ...\n"),
|
|
||||||
dir);
|
|
||||||
|
|
||||||
if (!set_dir_permissions(dir))
|
|
||||||
{
|
|
||||||
log_err(_("unable to change permissions of directory \"%s\": %s\n"),
|
|
||||||
dir, strerror(errno));
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
case 2:
|
|
||||||
/* Present and not empty */
|
|
||||||
log_warning(_("directory \"%s\" exists but is not empty\n"),
|
|
||||||
dir);
|
|
||||||
|
|
||||||
pg_dir = is_pg_dir(dir);
|
|
||||||
|
|
||||||
|
|
||||||
if (pg_dir && force)
|
|
||||||
{
|
|
||||||
|
|
||||||
/*
|
|
||||||
* The witness server does not store any data other than a copy of the
|
|
||||||
* repmgr metadata, so in --force mode we can simply overwrite the
|
|
||||||
* directory.
|
|
||||||
*
|
|
||||||
* For non-witness servers, we'll leave the data in place, both to reduce
|
|
||||||
* the risk of unintentional data loss and to make it possible for the
|
|
||||||
* data directory to be brought up-to-date with rsync.
|
|
||||||
*/
|
|
||||||
if (for_witness)
|
|
||||||
{
|
|
||||||
log_notice(_("deleting existing data directory \"%s\"\n"), dir);
|
|
||||||
nftw(dir, unlink_dir_callback, 64, FTW_DEPTH | FTW_PHYS);
|
|
||||||
}
|
|
||||||
/* Let it continue */
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
else if (pg_dir && !force)
|
|
||||||
{
|
|
||||||
log_hint(_("This looks like a PostgreSQL directory.\n"
|
|
||||||
"If you are sure you want to clone here, "
|
|
||||||
"please check there is no PostgreSQL server "
|
|
||||||
"running and use the -F/--force option\n"));
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
if (!create_directory(dir))
|
||||||
|
{
|
||||||
|
log_err(_("couldn't create directory \"%s\"...\n"),
|
||||||
|
dir);
|
||||||
return false;
|
return false;
|
||||||
default:
|
}
|
||||||
/* Trouble accessing directory */
|
break;
|
||||||
log_err(_("could not access directory \"%s\": %s\n"),
|
case 1:
|
||||||
dir, strerror(errno));
|
/* Present but empty, fix permissions and use it */
|
||||||
|
log_info(_("checking and correcting permissions on existing directory %s ...\n"),
|
||||||
|
dir);
|
||||||
|
|
||||||
|
if (!set_directory_permissions(dir))
|
||||||
|
{
|
||||||
|
log_err(_("could not change permissions of directory \"%s\": %s\n"),
|
||||||
|
dir, strerror(errno));
|
||||||
return false;
|
return false;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case 2:
|
||||||
|
/* Present and not empty */
|
||||||
|
log_warning(_("directory \"%s\" exists but is not empty\n"),
|
||||||
|
dir);
|
||||||
|
|
||||||
|
pg_dir = is_pg_dir(dir);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* we use force to reduce the time needed to restore a node which
|
||||||
|
* turn async after a failover or anything else
|
||||||
|
*/
|
||||||
|
if (pg_dir && force)
|
||||||
|
{
|
||||||
|
/* Let it continue */
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
else if (pg_dir && !force)
|
||||||
|
{
|
||||||
|
log_warning(_("\nThis looks like a PostgreSQL directory.\n"
|
||||||
|
"If you are sure you want to clone here, "
|
||||||
|
"please check there is no PostgreSQL server "
|
||||||
|
"running and use the --force option\n"));
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
return false;
|
||||||
|
default:
|
||||||
|
/* Trouble accessing directory */
|
||||||
|
log_err(_("could not access directory \"%s\": %s\n"),
|
||||||
|
dir, strerror(errno));
|
||||||
|
return false;
|
||||||
}
|
}
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int
|
|
||||||
unlink_dir_callback(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf)
|
|
||||||
{
|
|
||||||
int rv = remove(fpath);
|
|
||||||
|
|
||||||
if (rv)
|
|
||||||
perror(fpath);
|
|
||||||
|
|
||||||
return rv;
|
|
||||||
}
|
|
||||||
|
|||||||
15
check_dir.h
15
check_dir.h
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* check_dir.h
|
* check_dir.h
|
||||||
* Copyright (c) 2ndQuadrant, 2010-2016
|
* Copyright (c) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
* This program is free software: you can redistribute it and/or modify
|
* This program is free software: you can redistribute it and/or modify
|
||||||
* it under the terms of the GNU General Public License as published by
|
* it under the terms of the GNU General Public License as published by
|
||||||
@@ -20,12 +20,11 @@
|
|||||||
#ifndef _REPMGR_CHECK_DIR_H_
|
#ifndef _REPMGR_CHECK_DIR_H_
|
||||||
#define _REPMGR_CHECK_DIR_H_
|
#define _REPMGR_CHECK_DIR_H_
|
||||||
|
|
||||||
int mkdir_p(char *path, mode_t omode);
|
int mkdir_p(char *path, mode_t omode);
|
||||||
int check_dir(char *dir);
|
int check_dir(char *dir);
|
||||||
bool create_dir(char *dir);
|
bool create_directory(char *dir);
|
||||||
bool set_dir_permissions(char *dir);
|
bool set_directory_permissions(char *dir);
|
||||||
bool is_pg_dir(char *dir);
|
bool is_pg_dir(char *dir);
|
||||||
bool create_pg_dir(char *dir, bool force);
|
bool create_pgdir(char *dir, bool force);
|
||||||
bool create_witness_pg_dir(char *dir, bool force);
|
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
120
config.h
120
config.h
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* config.h
|
* config.h
|
||||||
* Copyright (c) 2ndQuadrant, 2010-2016
|
* Copyright (c) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
* This program is free software: you can redistribute it and/or modify
|
* This program is free software: you can redistribute it and/or modify
|
||||||
* it under the terms of the GNU General Public License as published by
|
* it under the terms of the GNU General Public License as published by
|
||||||
@@ -20,102 +20,38 @@
|
|||||||
#ifndef _REPMGR_CONFIG_H_
|
#ifndef _REPMGR_CONFIG_H_
|
||||||
#define _REPMGR_CONFIG_H_
|
#define _REPMGR_CONFIG_H_
|
||||||
|
|
||||||
#include "postgres_fe.h"
|
#include "repmgr.h"
|
||||||
|
|
||||||
#include "strutil.h"
|
#include "strutil.h"
|
||||||
|
|
||||||
#define CONFIG_FILE_NAME "repmgr.conf"
|
|
||||||
|
|
||||||
typedef struct EventNotificationListCell
|
|
||||||
{
|
|
||||||
struct EventNotificationListCell *next;
|
|
||||||
char event_type[MAXLEN];
|
|
||||||
} EventNotificationListCell;
|
|
||||||
|
|
||||||
typedef struct EventNotificationList
|
|
||||||
{
|
|
||||||
EventNotificationListCell *head;
|
|
||||||
EventNotificationListCell *tail;
|
|
||||||
} EventNotificationList;
|
|
||||||
|
|
||||||
typedef struct TablespaceListCell
|
|
||||||
{
|
|
||||||
struct TablespaceListCell *next;
|
|
||||||
char old_dir[MAXPGPATH];
|
|
||||||
char new_dir[MAXPGPATH];
|
|
||||||
} TablespaceListCell;
|
|
||||||
|
|
||||||
typedef struct TablespaceList
|
|
||||||
{
|
|
||||||
TablespaceListCell *head;
|
|
||||||
TablespaceListCell *tail;
|
|
||||||
} TablespaceList;
|
|
||||||
|
|
||||||
typedef struct
|
typedef struct
|
||||||
{
|
{
|
||||||
char cluster_name[MAXLEN];
|
char cluster_name[MAXLEN];
|
||||||
int node;
|
int node;
|
||||||
int upstream_node;
|
char conninfo[MAXLEN];
|
||||||
char conninfo[MAXLEN];
|
int failover;
|
||||||
int failover;
|
int priority;
|
||||||
int priority;
|
char node_name[MAXLEN];
|
||||||
char node_name[MAXLEN];
|
char promote_command[MAXLEN];
|
||||||
char promote_command[MAXLEN];
|
char follow_command[MAXLEN];
|
||||||
char follow_command[MAXLEN];
|
char loglevel[MAXLEN];
|
||||||
char stop_command[MAXLEN];
|
char logfacility[MAXLEN];
|
||||||
char start_command[MAXLEN];
|
char rsync_options[QUERY_STR_LEN];
|
||||||
char restart_command[MAXLEN];
|
char ssh_options[QUERY_STR_LEN];
|
||||||
char loglevel[MAXLEN];
|
int master_response_timeout;
|
||||||
char logfacility[MAXLEN];
|
int reconnect_attempts;
|
||||||
char rsync_options[QUERY_STR_LEN];
|
int reconnect_intvl;
|
||||||
char ssh_options[QUERY_STR_LEN];
|
char pg_bindir[MAXLEN];
|
||||||
int master_response_timeout;
|
char pgctl_options[MAXLEN];
|
||||||
int reconnect_attempts;
|
char logfile[MAXLEN];
|
||||||
int reconnect_interval;
|
int monitor_interval_secs;
|
||||||
char pg_bindir[MAXLEN];
|
int retry_promote_interval_secs;
|
||||||
char pg_ctl_options[MAXLEN];
|
} t_configuration_options;
|
||||||
char pg_basebackup_options[MAXLEN];
|
|
||||||
char restore_command[MAXLEN];
|
|
||||||
char logfile[MAXLEN];
|
|
||||||
int monitor_interval_secs;
|
|
||||||
int retry_promote_interval_secs;
|
|
||||||
int witness_repl_nodes_sync_interval_secs;
|
|
||||||
int use_replication_slots;
|
|
||||||
char event_notification_command[MAXLEN];
|
|
||||||
EventNotificationList event_notifications;
|
|
||||||
TablespaceList tablespace_mapping;
|
|
||||||
} t_configuration_options;
|
|
||||||
|
|
||||||
/*
|
#define T_CONFIGURATION_OPTIONS_INITIALIZER { "", -1, "", MANUAL_FAILOVER, -1, "", "", "", "", "", "", "", -1, -1, -1, "", "", "", 0, 0 }
|
||||||
* The following will initialize the structure with a minimal set of options;
|
|
||||||
* actual defaults are set in parse_config() before parsing the configuration file
|
|
||||||
*/
|
|
||||||
#define T_CONFIGURATION_OPTIONS_INITIALIZER { "", -1, NO_UPSTREAM_NODE, "", MANUAL_FAILOVER, -1, "", "", "", "", "", "", "", "", "", "", -1, -1, -1, "", "", "", "", "", 0, 0, 0, 0, "", { NULL, NULL }, {NULL, NULL} }
|
|
||||||
|
|
||||||
typedef struct ErrorListCell
|
void parse_config(const char *config_file, t_configuration_options *options);
|
||||||
{
|
void parse_line(char *buff, char *name, char *value);
|
||||||
struct ErrorListCell *next;
|
char *trim(char *s);
|
||||||
char *error_message;
|
bool reload_configuration(char *config_file, t_configuration_options *orig_options);
|
||||||
} ErrorListCell;
|
|
||||||
|
|
||||||
typedef struct ErrorList
|
|
||||||
{
|
|
||||||
ErrorListCell *head;
|
|
||||||
ErrorListCell *tail;
|
|
||||||
} ErrorList;
|
|
||||||
|
|
||||||
void set_progname(const char *argv0);
|
|
||||||
const char * progname(void);
|
|
||||||
|
|
||||||
bool load_config(const char *config_file, bool verbose, t_configuration_options *options, char *argv0);
|
|
||||||
bool reload_config(t_configuration_options *orig_options);
|
|
||||||
bool parse_config(t_configuration_options *options);
|
|
||||||
void parse_line(char *buff, char *name, char *value);
|
|
||||||
char *trim(char *s);
|
|
||||||
void error_list_append(ErrorList *error_list, char *error_message);
|
|
||||||
int repmgr_atoi(const char *s,
|
|
||||||
const char *config_item,
|
|
||||||
ErrorList *error_list,
|
|
||||||
bool allow_negative);
|
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
131
dbutils.h
131
dbutils.h
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* dbutils.h
|
* dbutils.h
|
||||||
* Copyright (c) 2ndQuadrant, 2010-2016
|
* Copyright (c) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
* This program is free software: you can redistribute it and/or modify
|
* This program is free software: you can redistribute it and/or modify
|
||||||
* it under the terms of the GNU General Public License as published by
|
* it under the terms of the GNU General Public License as published by
|
||||||
@@ -20,120 +20,25 @@
|
|||||||
#ifndef _REPMGR_DBUTILS_H_
|
#ifndef _REPMGR_DBUTILS_H_
|
||||||
#define _REPMGR_DBUTILS_H_
|
#define _REPMGR_DBUTILS_H_
|
||||||
|
|
||||||
#include "access/xlogdefs.h"
|
|
||||||
|
|
||||||
#include "config.h"
|
|
||||||
#include "strutil.h"
|
#include "strutil.h"
|
||||||
|
|
||||||
|
PGconn *establishDBConnection(const char *conninfo, const bool exit_on_error);
|
||||||
|
PGconn *establishDBConnectionByParams(const char *keywords[],
|
||||||
|
const char *values[],
|
||||||
|
const bool exit_on_error);
|
||||||
|
int is_standby(PGconn *conn);
|
||||||
|
int is_witness(PGconn *conn, char *schema, char *cluster, int node_id);
|
||||||
|
bool is_pgup(PGconn *conn, int timeout);
|
||||||
|
char *pg_version(PGconn *conn, char* major_version);
|
||||||
|
int guc_set(PGconn *conn, const char *parameter, const char *op,
|
||||||
|
const char *value);
|
||||||
|
int guc_set_typed(PGconn *conn, const char *parameter, const char *op,
|
||||||
|
const char *value, const char *datatype);
|
||||||
|
|
||||||
typedef enum {
|
const char *get_cluster_size(PGconn *conn);
|
||||||
UNKNOWN = 0,
|
PGconn *getMasterConnection(PGconn *standby_conn, char *schema, char *cluster,
|
||||||
MASTER,
|
int *master_id, char *master_conninfo_out);
|
||||||
STANDBY,
|
|
||||||
WITNESS
|
|
||||||
} t_server_type;
|
|
||||||
|
|
||||||
/*
|
int wait_connection_availability(PGconn *conn, long long timeout);
|
||||||
* Struct to store node information
|
bool CancelQuery(PGconn *conn, int timeout);
|
||||||
*/
|
|
||||||
typedef struct s_node_info
|
|
||||||
{
|
|
||||||
int node_id;
|
|
||||||
int upstream_node_id;
|
|
||||||
t_server_type type;
|
|
||||||
char name[MAXLEN];
|
|
||||||
char conninfo_str[MAXLEN];
|
|
||||||
char slot_name[MAXLEN];
|
|
||||||
int priority;
|
|
||||||
bool active;
|
|
||||||
bool is_ready;
|
|
||||||
bool is_visible;
|
|
||||||
XLogRecPtr xlog_location;
|
|
||||||
} t_node_info;
|
|
||||||
|
|
||||||
|
|
||||||
#define T_NODE_INFO_INITIALIZER { \
|
|
||||||
NODE_NOT_FOUND, \
|
|
||||||
NO_UPSTREAM_NODE, \
|
|
||||||
UNKNOWN, \
|
|
||||||
"", \
|
|
||||||
"", \
|
|
||||||
"", \
|
|
||||||
DEFAULT_PRIORITY, \
|
|
||||||
true, \
|
|
||||||
false, \
|
|
||||||
false, \
|
|
||||||
InvalidXLogRecPtr \
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Struct to store replication slot information
|
|
||||||
*/
|
|
||||||
|
|
||||||
typedef struct s_replication_slot
|
|
||||||
{
|
|
||||||
char slot_name[MAXLEN];
|
|
||||||
char slot_type[MAXLEN];
|
|
||||||
bool active;
|
|
||||||
} t_replication_slot;
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
PGconn *_establish_db_connection(const char *conninfo,
|
|
||||||
const bool exit_on_error,
|
|
||||||
const bool log_notice,
|
|
||||||
const bool verbose_only);
|
|
||||||
PGconn *establish_db_connection(const char *conninfo,
|
|
||||||
const bool exit_on_error);
|
|
||||||
PGconn *establish_db_connection_quiet(const char *conninfo);
|
|
||||||
PGconn *test_db_connection(const char *conninfo);
|
|
||||||
PGconn *establish_db_connection_by_params(const char *keywords[],
|
|
||||||
const char *values[],
|
|
||||||
const bool exit_on_error);
|
|
||||||
bool begin_transaction(PGconn *conn);
|
|
||||||
bool commit_transaction(PGconn *conn);
|
|
||||||
bool rollback_transaction(PGconn *conn);
|
|
||||||
bool check_cluster_schema(PGconn *conn);
|
|
||||||
int is_standby(PGconn *conn);
|
|
||||||
bool is_pgup(PGconn *conn, int timeout);
|
|
||||||
int get_master_node_id(PGconn *conn, char *cluster);
|
|
||||||
int get_server_version(PGconn *conn, char *server_version);
|
|
||||||
bool get_cluster_size(PGconn *conn, char *size);
|
|
||||||
bool get_pg_setting(PGconn *conn, const char *setting, char *output);
|
|
||||||
|
|
||||||
int guc_set(PGconn *conn, const char *parameter, const char *op,
|
|
||||||
const char *value);
|
|
||||||
int guc_set_typed(PGconn *conn, const char *parameter, const char *op,
|
|
||||||
const char *value, const char *datatype);
|
|
||||||
bool get_conninfo_value(const char *conninfo, const char *keyword, char *output);
|
|
||||||
PGconn *get_upstream_connection(PGconn *standby_conn, char *cluster,
|
|
||||||
int node_id,
|
|
||||||
int *upstream_node_id_ptr,
|
|
||||||
char *upstream_conninfo_out);
|
|
||||||
PGconn *get_master_connection(PGconn *standby_conn, char *cluster,
|
|
||||||
int *master_id, char *master_conninfo_out);
|
|
||||||
|
|
||||||
int wait_connection_availability(PGconn *conn, long long timeout);
|
|
||||||
bool cancel_query(PGconn *conn, int timeout);
|
|
||||||
char *get_repmgr_schema(void);
|
|
||||||
char *get_repmgr_schema_quoted(PGconn *conn);
|
|
||||||
bool create_replication_slot(PGconn *conn, char *slot_name, int server_version_num);
|
|
||||||
int get_slot_record(PGconn *conn, char *slot_name, t_replication_slot *record);
|
|
||||||
bool drop_replication_slot(PGconn *conn, char *slot_name);
|
|
||||||
bool start_backup(PGconn *conn, char *first_wal_segment, bool fast_checkpoint);
|
|
||||||
bool stop_backup(PGconn *conn, char *last_wal_segment);
|
|
||||||
bool set_config_bool(PGconn *conn, const char *config_param, bool state);
|
|
||||||
bool witness_copy_node_records(PGconn *masterconn, PGconn *witnessconn, char *cluster_name);
|
|
||||||
bool create_node_record(PGconn *conn, char *action, int node, char *type, int upstream_node, char *cluster_name, char *node_name, char *conninfo, int priority, char *slot_name, bool active);
|
|
||||||
bool delete_node_record(PGconn *conn, int node, char *action);
|
|
||||||
int get_node_record(PGconn *conn, char *cluster, int node_id, t_node_info *node_info);
|
|
||||||
int get_node_record_by_name(PGconn *conn, char *cluster, const char *node_name, t_node_info *node_info);
|
|
||||||
bool update_node_record_status(PGconn *conn, char *cluster_name, int this_node_id, char *type, int upstream_node_id, bool active);
|
|
||||||
bool update_node_record_set_upstream(PGconn *conn, char *cluster_name, int this_node_id, int new_upstream_node_id);
|
|
||||||
bool create_event_record(PGconn *conn, t_configuration_options *options, int node_id, char *event, bool successful, char *details);
|
|
||||||
|
|
||||||
int get_node_replication_state(PGconn *conn, char *node_name, char *output);
|
|
||||||
t_server_type parse_node_type(const char *type);
|
|
||||||
int get_data_checksum_version(const char *data_directory);
|
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
|||||||
6
debian/DEBIAN/control
vendored
6
debian/DEBIAN/control
vendored
@@ -1,9 +1,9 @@
|
|||||||
Package: repmgr-auto
|
Package: repmgr-auto
|
||||||
Version: 3.1.3
|
Version: 2.0beta2
|
||||||
Section: database
|
Section: database
|
||||||
Priority: optional
|
Priority: optional
|
||||||
Architecture: all
|
Architecture: all
|
||||||
Depends: rsync, postgresql-9.3 | postgresql-9.4 | postgresql-9.5
|
Depends: rsync, postgresql-9.0 | postgresql-9.1 | postgresql-9.2 | postgresql-9.3
|
||||||
Maintainer: Self built package <user@localhost>
|
Maintainer: Jaime Casanova <jaime@2ndQuadrant.com>
|
||||||
Description: PostgreSQL replication setup, magament and monitoring
|
Description: PostgreSQL replication setup, magament and monitoring
|
||||||
has two main executables
|
has two main executables
|
||||||
|
|||||||
6
debian/repmgr.repmgrd.default
vendored
6
debian/repmgr.repmgrd.default
vendored
@@ -6,13 +6,13 @@
|
|||||||
REPMGRD_ENABLED=no
|
REPMGRD_ENABLED=no
|
||||||
|
|
||||||
# Options for repmgrd (required)
|
# Options for repmgrd (required)
|
||||||
#REPMGRD_OPTS="--config-file /path/to/repmgr.conf"
|
#REPMGRD_OPTS="--config_file /path/to/repmgr.conf"
|
||||||
|
|
||||||
# User to run repmgrd as
|
# User to run repmgrd as
|
||||||
#REPMGRD_USER=postgres
|
#REPMGRD_USER=postgres
|
||||||
|
|
||||||
# repmgrd binary
|
# repmgrd binary
|
||||||
#REPMGRD_BIN=/usr/bin/repmgrd
|
#REPMGR_BIN=/usr/bin/repmgr
|
||||||
|
|
||||||
# pid file
|
# pid file
|
||||||
#REPMGRD_PIDFILE=/var/run/repmgrd.pid
|
#REPMGR_PIDFILE=/var/run/repmgrd.pid
|
||||||
|
|||||||
6
debian/repmgr.repmgrd.init
vendored
6
debian/repmgr.repmgrd.init
vendored
@@ -50,7 +50,7 @@ do_start()
|
|||||||
# 0 if daemon has been started
|
# 0 if daemon has been started
|
||||||
# 1 if daemon was already running
|
# 1 if daemon was already running
|
||||||
# other if daemon could not be started or a failure occured
|
# other if daemon could not be started or a failure occured
|
||||||
start-stop-daemon --start --quiet --background --chuid $REPMGRD_USER --make-pidfile --pidfile $REPMGRD_PIDFILE --exec $REPMGRD_BIN -- $REPMGRD_OPTS
|
start-stop-daemon --start --quiet --chuid $REPMGRD_USER --make-pidfile --pidfile $REPMGRD_PIDFILE --exec $REPMGRD_BIN -- $REPMGRD_OPTS
|
||||||
}
|
}
|
||||||
|
|
||||||
do_stop()
|
do_stop()
|
||||||
@@ -59,7 +59,7 @@ do_stop()
|
|||||||
# 0 if daemon has been stopped
|
# 0 if daemon has been stopped
|
||||||
# 1 if daemon was already stopped
|
# 1 if daemon was already stopped
|
||||||
# other if daemon could not be stopped or a failure occurred
|
# other if daemon could not be stopped or a failure occurred
|
||||||
start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $REPMGRD_PIDFILE --name "$(basename $REPMGRD_BIN)"
|
start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $REPMGRD_PIDFILE --exec $REPMGRD_BIN
|
||||||
}
|
}
|
||||||
|
|
||||||
case "$1" in
|
case "$1" in
|
||||||
@@ -90,7 +90,7 @@ case "$1" in
|
|||||||
$0 start
|
$0 start
|
||||||
;;
|
;;
|
||||||
status)
|
status)
|
||||||
status_of_proc -p $REPMGRD_PIDFILE $REPMGRD_BIN $NAME && exit 0 || exit $?
|
status_of_proc -p $PIDFILE $DAEMON $NAME && exit 0 || exit $?
|
||||||
;;
|
;;
|
||||||
*)
|
*)
|
||||||
echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload|status}" >&2
|
echo "Usage: $SCRIPTNAME {start|stop|restart|force-reload|status}" >&2
|
||||||
|
|||||||
194
dirmod.c
194
dirmod.c
@@ -1,194 +0,0 @@
|
|||||||
/*
|
|
||||||
*
|
|
||||||
* dirmod.c
|
|
||||||
* directory handling functions
|
|
||||||
*
|
|
||||||
* Copyright (C) 2ndQuadrant, 2010-2016
|
|
||||||
*
|
|
||||||
* Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
|
|
||||||
* Portions Copyright (c) 1994, Regents of the University of California
|
|
||||||
*
|
|
||||||
* This program is free software: you can redistribute it and/or modify
|
|
||||||
* it under the terms of the GNU General Public License as published by
|
|
||||||
* the Free Software Foundation, either version 3 of the License, or
|
|
||||||
* (at your option) any later version.
|
|
||||||
*
|
|
||||||
* This program is distributed in the hope that it will be useful,
|
|
||||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
||||||
* GNU General Public License for more details.
|
|
||||||
*
|
|
||||||
* You should have received a copy of the GNU General Public License
|
|
||||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include "postgres_fe.h"
|
|
||||||
|
|
||||||
/* Don't modify declarations in system headers */
|
|
||||||
|
|
||||||
#include <unistd.h>
|
|
||||||
#include <dirent.h>
|
|
||||||
#include <sys/stat.h>
|
|
||||||
|
|
||||||
/*
|
|
||||||
* pgfnames
|
|
||||||
*
|
|
||||||
* return a list of the names of objects in the argument directory. Caller
|
|
||||||
* must call pgfnames_cleanup later to free the memory allocated by this
|
|
||||||
* function.
|
|
||||||
*/
|
|
||||||
char **
|
|
||||||
pgfnames(const char *path)
|
|
||||||
{
|
|
||||||
DIR *dir;
|
|
||||||
struct dirent *file;
|
|
||||||
char **filenames;
|
|
||||||
int numnames = 0;
|
|
||||||
int fnsize = 200; /* enough for many small dbs */
|
|
||||||
|
|
||||||
dir = opendir(path);
|
|
||||||
if (dir == NULL)
|
|
||||||
{
|
|
||||||
return NULL;
|
|
||||||
}
|
|
||||||
|
|
||||||
filenames = (char **) palloc(fnsize * sizeof(char *));
|
|
||||||
|
|
||||||
while (errno = 0, (file = readdir(dir)) != NULL)
|
|
||||||
{
|
|
||||||
if (strcmp(file->d_name, ".") != 0 && strcmp(file->d_name, "..") != 0)
|
|
||||||
{
|
|
||||||
if (numnames + 1 >= fnsize)
|
|
||||||
{
|
|
||||||
fnsize *= 2;
|
|
||||||
filenames = (char **) repalloc(filenames,
|
|
||||||
fnsize * sizeof(char *));
|
|
||||||
}
|
|
||||||
filenames[numnames++] = pstrdup(file->d_name);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (errno)
|
|
||||||
{
|
|
||||||
fprintf(stderr, _("could not read directory \"%s\": %s\n"),
|
|
||||||
path, strerror(errno));
|
|
||||||
}
|
|
||||||
|
|
||||||
filenames[numnames] = NULL;
|
|
||||||
|
|
||||||
if (closedir(dir))
|
|
||||||
{
|
|
||||||
fprintf(stderr, _("could not close directory \"%s\": %s\n"),
|
|
||||||
path, strerror(errno));
|
|
||||||
}
|
|
||||||
|
|
||||||
return filenames;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* pgfnames_cleanup
|
|
||||||
*
|
|
||||||
* deallocate memory used for filenames
|
|
||||||
*/
|
|
||||||
void
|
|
||||||
pgfnames_cleanup(char **filenames)
|
|
||||||
{
|
|
||||||
char **fn;
|
|
||||||
|
|
||||||
for (fn = filenames; *fn; fn++)
|
|
||||||
pfree(*fn);
|
|
||||||
|
|
||||||
pfree(filenames);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* rmtree
|
|
||||||
*
|
|
||||||
* Delete a directory tree recursively.
|
|
||||||
* Assumes path points to a valid directory.
|
|
||||||
* Deletes everything under path.
|
|
||||||
* If rmtopdir is true deletes the directory too.
|
|
||||||
* Returns true if successful, false if there was any problem.
|
|
||||||
* (The details of the problem are reported already, so caller
|
|
||||||
* doesn't really have to say anything more, but most do.)
|
|
||||||
*/
|
|
||||||
bool
|
|
||||||
rmtree(const char *path, bool rmtopdir)
|
|
||||||
{
|
|
||||||
bool result = true;
|
|
||||||
char pathbuf[MAXPGPATH];
|
|
||||||
char **filenames;
|
|
||||||
char **filename;
|
|
||||||
struct stat statbuf;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* we copy all the names out of the directory before we start modifying
|
|
||||||
* it.
|
|
||||||
*/
|
|
||||||
filenames = pgfnames(path);
|
|
||||||
|
|
||||||
if (filenames == NULL)
|
|
||||||
return false;
|
|
||||||
|
|
||||||
/* now we have the names we can start removing things */
|
|
||||||
for (filename = filenames; *filename; filename++)
|
|
||||||
{
|
|
||||||
snprintf(pathbuf, MAXPGPATH, "%s/%s", path, *filename);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* It's ok if the file is not there anymore; we were just about to
|
|
||||||
* delete it anyway.
|
|
||||||
*
|
|
||||||
* This is not an academic possibility. One scenario where this
|
|
||||||
* happens is when bgwriter has a pending unlink request for a file in
|
|
||||||
* a database that's being dropped. In dropdb(), we call
|
|
||||||
* ForgetDatabaseFsyncRequests() to flush out any such pending unlink
|
|
||||||
* requests, but because that's asynchronous, it's not guaranteed that
|
|
||||||
* the bgwriter receives the message in time.
|
|
||||||
*/
|
|
||||||
if (lstat(pathbuf, &statbuf) != 0)
|
|
||||||
{
|
|
||||||
if (errno != ENOENT)
|
|
||||||
{
|
|
||||||
result = false;
|
|
||||||
}
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (S_ISDIR(statbuf.st_mode))
|
|
||||||
{
|
|
||||||
/* call ourselves recursively for a directory */
|
|
||||||
if (!rmtree(pathbuf, true))
|
|
||||||
{
|
|
||||||
/* we already reported the error */
|
|
||||||
result = false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
if (unlink(pathbuf) != 0)
|
|
||||||
{
|
|
||||||
if (errno != ENOENT)
|
|
||||||
{
|
|
||||||
result = false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (rmtopdir)
|
|
||||||
{
|
|
||||||
if (rmdir(path) != 0)
|
|
||||||
{
|
|
||||||
result = false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
pgfnames_cleanup(filenames);
|
|
||||||
|
|
||||||
return result;
|
|
||||||
}
|
|
||||||
|
|
||||||
23
dirmod.h
23
dirmod.h
@@ -1,23 +0,0 @@
|
|||||||
/*
|
|
||||||
* dirmod.h
|
|
||||||
* Copyright (c) 2ndQuadrant, 2010-2016
|
|
||||||
*
|
|
||||||
* This program is free software: you can redistribute it and/or modify
|
|
||||||
* it under the terms of the GNU General Public License as published by
|
|
||||||
* the Free Software Foundation, either version 3 of the License, or
|
|
||||||
* (at your option) any later version.
|
|
||||||
*
|
|
||||||
* This program is distributed in the hope that it will be useful,
|
|
||||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
||||||
* GNU General Public License for more details.
|
|
||||||
*
|
|
||||||
* You should have received a copy of the GNU General Public License
|
|
||||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
||||||
*
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifndef _DIRMOD_H_
|
|
||||||
#define _DIRMOD_H_
|
|
||||||
|
|
||||||
#endif
|
|
||||||
14
errcode.h
14
errcode.h
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* errcode.h
|
* errcode.h
|
||||||
* Copyright (C) 2ndQuadrant, 2010-2016
|
* Copyright (C) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
* This program is free software: you can redistribute it and/or modify
|
* This program is free software: you can redistribute it and/or modify
|
||||||
* it under the terms of the GNU General Public License as published by
|
* it under the terms of the GNU General Public License as published by
|
||||||
@@ -25,18 +25,16 @@
|
|||||||
#define SUCCESS 0
|
#define SUCCESS 0
|
||||||
#define ERR_BAD_CONFIG 1
|
#define ERR_BAD_CONFIG 1
|
||||||
#define ERR_BAD_RSYNC 2
|
#define ERR_BAD_RSYNC 2
|
||||||
|
#define ERR_STOP_BACKUP 3
|
||||||
#define ERR_NO_RESTART 4
|
#define ERR_NO_RESTART 4
|
||||||
|
#define ERR_NEEDS_XLOG 5
|
||||||
#define ERR_DB_CON 6
|
#define ERR_DB_CON 6
|
||||||
#define ERR_DB_QUERY 7
|
#define ERR_DB_QUERY 7
|
||||||
#define ERR_PROMOTED 8
|
#define ERR_PROMOTED 8
|
||||||
|
#define ERR_BAD_PASSWORD 9
|
||||||
#define ERR_STR_OVERFLOW 10
|
#define ERR_STR_OVERFLOW 10
|
||||||
#define ERR_FAILOVER_FAIL 11
|
#define ERR_FAILOVER_FAIL 11
|
||||||
#define ERR_BAD_SSH 12
|
#define ERR_BAD_SSH 12
|
||||||
#define ERR_SYS_FAILURE 13
|
#define ERR_SYS_FAILURE 13
|
||||||
#define ERR_BAD_BASEBACKUP 14
|
|
||||||
#define ERR_INTERNAL 15
|
|
||||||
#define ERR_MONITORING_FAIL 16
|
|
||||||
#define ERR_BAD_BACKUP_LABEL 17
|
|
||||||
#define ERR_SWITCHOVER_FAIL 18
|
|
||||||
|
|
||||||
#endif /* _ERRCODE_H_ */
|
#endif /* _ERRCODE_H_ */
|
||||||
|
|||||||
260
log.c
260
log.c
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* log.c - Logging methods
|
* log.c - Logging methods
|
||||||
* Copyright (C) 2ndQuadrant, 2010-2016
|
* Copyright (C) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
* This module is a set of methods for logging (currently only syslog)
|
* This module is a set of methods for logging (currently only syslog)
|
||||||
*
|
*
|
||||||
@@ -39,119 +39,45 @@
|
|||||||
|
|
||||||
/* #define REPMGR_DEBUG */
|
/* #define REPMGR_DEBUG */
|
||||||
|
|
||||||
static int detect_log_facility(const char *facility);
|
void stderr_log_with_level(const char *level_name, int level, const char *fmt, ...) {
|
||||||
static void _stderr_log_with_level(const char *level_name, int level, const char *fmt, va_list ap)
|
size_t len = strlen(fmt);
|
||||||
__attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 0)));
|
char fmt1[len + 150];
|
||||||
|
time_t t;
|
||||||
|
struct tm *tm;
|
||||||
|
char buff[100];
|
||||||
|
va_list ap;
|
||||||
|
|
||||||
int log_type = REPMGR_STDERR;
|
if(log_level >= level) {
|
||||||
int log_level = LOG_NOTICE;
|
|
||||||
int last_log_level = LOG_NOTICE;
|
|
||||||
int verbose_logging = false;
|
|
||||||
int terse_logging = false;
|
|
||||||
|
|
||||||
extern void
|
|
||||||
stderr_log_with_level(const char *level_name, int level, const char *fmt, ...)
|
|
||||||
{
|
|
||||||
va_list arglist;
|
|
||||||
|
|
||||||
va_start(arglist, fmt);
|
|
||||||
_stderr_log_with_level(level_name, level, fmt, arglist);
|
|
||||||
va_end(arglist);
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
|
||||||
_stderr_log_with_level(const char *level_name, int level, const char *fmt, va_list ap)
|
|
||||||
{
|
|
||||||
time_t t;
|
|
||||||
struct tm *tm;
|
|
||||||
char buff[100];
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Store the requested level so that if there's a subsequent
|
|
||||||
* log_hint(), we can suppress that if appropriate.
|
|
||||||
*/
|
|
||||||
last_log_level = level;
|
|
||||||
|
|
||||||
if (log_level >= level)
|
|
||||||
{
|
|
||||||
time(&t);
|
time(&t);
|
||||||
tm = localtime(&t);
|
tm = localtime(&t);
|
||||||
strftime(buff, 100, "[%Y-%m-%d %H:%M:%S]", tm);
|
|
||||||
fprintf(stderr, "%s [%s] ", buff, level_name);
|
|
||||||
|
|
||||||
vfprintf(stderr, fmt, ap);
|
va_start(ap, fmt);
|
||||||
|
|
||||||
|
strftime(buff, 100, "[%Y-%m-%d %H:%M:%S]", tm);
|
||||||
|
snprintf(fmt1, len + 150, "%s [%s] %s", buff, level_name, fmt);
|
||||||
|
vfprintf(stderr, fmt1, ap);
|
||||||
|
|
||||||
|
va_end(ap);
|
||||||
|
|
||||||
fflush(stderr);
|
fflush(stderr);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
void
|
|
||||||
log_hint(const char *fmt, ...)
|
static int detect_log_level(const char* level);
|
||||||
|
static int detect_log_facility(const char* facility);
|
||||||
|
|
||||||
|
int log_type = REPMGR_STDERR;
|
||||||
|
int log_level = LOG_NOTICE;
|
||||||
|
|
||||||
|
bool logger_init(t_configuration_options *opts, const char* ident, const char* level, const char* facility)
|
||||||
{
|
{
|
||||||
va_list ap;
|
|
||||||
|
|
||||||
if (terse_logging == false)
|
int l;
|
||||||
{
|
int f;
|
||||||
va_start(ap, fmt);
|
|
||||||
_stderr_log_with_level("HINT", last_log_level, fmt, ap);
|
|
||||||
va_end(ap);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void
|
|
||||||
log_verbose(int level, const char *fmt, ...)
|
|
||||||
{
|
|
||||||
va_list ap;
|
|
||||||
|
|
||||||
va_start(ap, fmt);
|
|
||||||
|
|
||||||
if (verbose_logging == true)
|
|
||||||
{
|
|
||||||
switch(level)
|
|
||||||
{
|
|
||||||
case LOG_EMERG:
|
|
||||||
_stderr_log_with_level("EMERG", level, fmt, ap);
|
|
||||||
break;
|
|
||||||
case LOG_ALERT:
|
|
||||||
_stderr_log_with_level("ALERT", level, fmt, ap);
|
|
||||||
break;
|
|
||||||
case LOG_CRIT:
|
|
||||||
_stderr_log_with_level("CRIT", level, fmt, ap);
|
|
||||||
break;
|
|
||||||
case LOG_ERR:
|
|
||||||
_stderr_log_with_level("ERR", level, fmt, ap);
|
|
||||||
break;
|
|
||||||
case LOG_WARNING:
|
|
||||||
_stderr_log_with_level("WARNING", level, fmt, ap);
|
|
||||||
break;
|
|
||||||
case LOG_NOTICE:
|
|
||||||
_stderr_log_with_level("NOTICE", level, fmt, ap);
|
|
||||||
break;
|
|
||||||
case LOG_INFO:
|
|
||||||
_stderr_log_with_level("INFO", level, fmt, ap);
|
|
||||||
break;
|
|
||||||
case LOG_DEBUG:
|
|
||||||
_stderr_log_with_level("DEBUG", level, fmt, ap);
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
va_end(ap);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
bool
|
|
||||||
logger_init(t_configuration_options *opts, const char *ident)
|
|
||||||
{
|
|
||||||
char *level = opts->loglevel;
|
|
||||||
char *facility = opts->logfacility;
|
|
||||||
|
|
||||||
int l;
|
|
||||||
int f;
|
|
||||||
|
|
||||||
#ifdef HAVE_SYSLOG
|
#ifdef HAVE_SYSLOG
|
||||||
int syslog_facility = DEFAULT_SYSLOG_FACILITY;
|
int syslog_facility = DEFAULT_SYSLOG_FACILITY;
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
#ifdef REPMGR_DEBUG
|
#ifdef REPMGR_DEBUG
|
||||||
@@ -170,10 +96,10 @@ logger_init(t_configuration_options *opts, const char *ident)
|
|||||||
printf("Assigned level for logger: %d\n", l);
|
printf("Assigned level for logger: %d\n", l);
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
if (l >= 0)
|
if (l > 0)
|
||||||
log_level = l;
|
log_level = l;
|
||||||
else
|
else
|
||||||
stderr_log_warning(_("Invalid log level \"%s\" (available values: DEBUG, INFO, NOTICE, WARNING, ERR, ALERT, CRIT or EMERG)\n"), level);
|
stderr_log_warning(_("Cannot detect log level %s (use any of DEBUG, INFO, NOTICE, WARNING, ERR, ALERT, CRIT or EMERG)\n"), level);
|
||||||
}
|
}
|
||||||
|
|
||||||
if (facility && *facility)
|
if (facility && *facility)
|
||||||
@@ -208,53 +134,33 @@ logger_init(t_configuration_options *opts, const char *ident)
|
|||||||
|
|
||||||
if (log_type == REPMGR_SYSLOG)
|
if (log_type == REPMGR_SYSLOG)
|
||||||
{
|
{
|
||||||
setlogmask(LOG_UPTO(log_level));
|
setlogmask (LOG_UPTO (log_level));
|
||||||
openlog(ident, LOG_CONS | LOG_PID | LOG_NDELAY, syslog_facility);
|
openlog (ident, LOG_CONS | LOG_PID | LOG_NDELAY, syslog_facility);
|
||||||
|
|
||||||
stderr_log_notice(_("Setup syslog (level: %s, facility: %s)\n"), level, facility);
|
stderr_log_notice(_("Setup syslog (level: %s, facility: %s)\n"), level, facility);
|
||||||
}
|
}
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
if (*opts->logfile)
|
if (*opts->logfile)
|
||||||
{
|
{
|
||||||
FILE *fd;
|
FILE *fd;
|
||||||
|
|
||||||
/* Check if we can write to the specified file before redirecting
|
|
||||||
* stderr - if freopen() fails, stderr output will vanish into
|
|
||||||
* the ether and the user won't know what's going on.
|
|
||||||
*/
|
|
||||||
|
|
||||||
fd = fopen(opts->logfile, "a");
|
|
||||||
if (fd == NULL)
|
|
||||||
{
|
|
||||||
stderr_log_err(_("Unable to open specified logfile '%s' for writing: %s\n"), opts->logfile, strerror(errno));
|
|
||||||
stderr_log_err(_("Terminating\n"));
|
|
||||||
exit(ERR_BAD_CONFIG);
|
|
||||||
}
|
|
||||||
fclose(fd);
|
|
||||||
|
|
||||||
stderr_log_notice(_("Redirecting logging output to '%s'\n"), opts->logfile);
|
|
||||||
fd = freopen(opts->logfile, "a", stderr);
|
fd = freopen(opts->logfile, "a", stderr);
|
||||||
|
|
||||||
/* It's possible freopen() may still fail due to e.g. a race condition;
|
|
||||||
as it's not feasible to restore stderr after a failed freopen(),
|
|
||||||
we'll write to stdout as a last resort.
|
|
||||||
*/
|
|
||||||
if (fd == NULL)
|
if (fd == NULL)
|
||||||
{
|
{
|
||||||
printf(_("Unable to open specified logfile %s for writing: %s\n"), opts->logfile, strerror(errno));
|
fprintf(stderr, "error reopening stderr to '%s': %s",
|
||||||
printf(_("Terminating\n"));
|
opts->logfile, strerror(errno));
|
||||||
exit(ERR_BAD_CONFIG);
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
return true;
|
return true;
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
||||||
|
bool logger_shutdown(void)
|
||||||
bool
|
|
||||||
logger_shutdown(void)
|
|
||||||
{
|
{
|
||||||
|
|
||||||
#ifdef HAVE_SYSLOG
|
#ifdef HAVE_SYSLOG
|
||||||
if (log_type == REPMGR_SYSLOG)
|
if (log_type == REPMGR_SYSLOG)
|
||||||
closelog();
|
closelog();
|
||||||
@@ -264,34 +170,17 @@ logger_shutdown(void)
|
|||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Indicate whether extra-verbose logging is required. This will
|
* Set a minimum logging level. Intended for command line verbosity
|
||||||
* generate a lot of output, particularly debug logging, and should
|
* options, which might increase requested logging over what's specified
|
||||||
* not be permanently enabled in production.
|
* in the regular configuration file.
|
||||||
*
|
|
||||||
* NOTE: in previous repmgr versions, this option forced the log
|
|
||||||
* level to INFO.
|
|
||||||
*/
|
*/
|
||||||
void
|
void logger_min_verbose(int minimum)
|
||||||
logger_set_verbose(void)
|
|
||||||
{
|
{
|
||||||
verbose_logging = true;
|
if (log_level < minimum)
|
||||||
|
log_level = minimum;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
int detect_log_level(const char* level)
|
||||||
/*
|
|
||||||
* Indicate whether some non-critical log messages can be omitted.
|
|
||||||
* Currently this includes warnings about irrelevant command line
|
|
||||||
* options and hints.
|
|
||||||
*/
|
|
||||||
|
|
||||||
void logger_set_terse(void)
|
|
||||||
{
|
|
||||||
terse_logging = true;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
int
|
|
||||||
detect_log_level(const char *level)
|
|
||||||
{
|
{
|
||||||
if (!strcmp(level, "DEBUG"))
|
if (!strcmp(level, "DEBUG"))
|
||||||
return LOG_DEBUG;
|
return LOG_DEBUG;
|
||||||
@@ -310,44 +199,43 @@ detect_log_level(const char *level)
|
|||||||
if (!strcmp(level, "EMERG"))
|
if (!strcmp(level, "EMERG"))
|
||||||
return LOG_EMERG;
|
return LOG_EMERG;
|
||||||
|
|
||||||
return -1;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
static int
|
int detect_log_facility(const char* facility)
|
||||||
detect_log_facility(const char *facility)
|
|
||||||
{
|
{
|
||||||
int local = 0;
|
int local = 0;
|
||||||
|
|
||||||
if (!strncmp(facility, "LOCAL", 5) && strlen(facility) == 6)
|
if (!strncmp(facility, "LOCAL", 5) && strlen(facility) == 6)
|
||||||
{
|
{
|
||||||
local = atoi(&facility[5]);
|
|
||||||
|
local = atoi (&facility[5]);
|
||||||
|
|
||||||
switch (local)
|
switch (local)
|
||||||
{
|
{
|
||||||
case 0:
|
case 0:
|
||||||
return LOG_LOCAL0;
|
return LOG_LOCAL0;
|
||||||
break;
|
break;
|
||||||
case 1:
|
case 1:
|
||||||
return LOG_LOCAL1;
|
return LOG_LOCAL1;
|
||||||
break;
|
break;
|
||||||
case 2:
|
case 2:
|
||||||
return LOG_LOCAL2;
|
return LOG_LOCAL2;
|
||||||
break;
|
break;
|
||||||
case 3:
|
case 3:
|
||||||
return LOG_LOCAL3;
|
return LOG_LOCAL3;
|
||||||
break;
|
break;
|
||||||
case 4:
|
case 4:
|
||||||
return LOG_LOCAL4;
|
return LOG_LOCAL4;
|
||||||
break;
|
break;
|
||||||
case 5:
|
case 5:
|
||||||
return LOG_LOCAL5;
|
return LOG_LOCAL5;
|
||||||
break;
|
break;
|
||||||
case 6:
|
case 6:
|
||||||
return LOG_LOCAL6;
|
return LOG_LOCAL6;
|
||||||
break;
|
break;
|
||||||
case 7:
|
case 7:
|
||||||
return LOG_LOCAL7;
|
return LOG_LOCAL7;
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|||||||
49
log.h
49
log.h
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* log.h
|
* log.h
|
||||||
* Copyright (c) 2ndQuadrant, 2010-2016
|
* Copyright (c) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
* This program is free software: you can redistribute it and/or modify
|
* This program is free software: you can redistribute it and/or modify
|
||||||
* it under the terms of the GNU General Public License as published by
|
* it under the terms of the GNU General Public License as published by
|
||||||
@@ -25,9 +25,7 @@
|
|||||||
#define REPMGR_SYSLOG 1
|
#define REPMGR_SYSLOG 1
|
||||||
#define REPMGR_STDERR 2
|
#define REPMGR_STDERR 2
|
||||||
|
|
||||||
extern void
|
void stderr_log_with_level(const char *level_name, int level, const char *fmt, ...) __attribute__ ((format (PG_PRINTF_ATTRIBUTE, 3, 4)));
|
||||||
stderr_log_with_level(const char *level_name, int level, const char *fmt,...)
|
|
||||||
__attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 4)));
|
|
||||||
|
|
||||||
/* Standard error logging */
|
/* Standard error logging */
|
||||||
#define stderr_log_debug(...) stderr_log_with_level("DEBUG", LOG_DEBUG, __VA_ARGS__)
|
#define stderr_log_debug(...) stderr_log_with_level("DEBUG", LOG_DEBUG, __VA_ARGS__)
|
||||||
@@ -90,16 +88,17 @@ __attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 4)));
|
|||||||
if (log_type == REPMGR_SYSLOG) syslog(LOG_ALERT, __VA_ARGS__); \
|
if (log_type == REPMGR_SYSLOG) syslog(LOG_ALERT, __VA_ARGS__); \
|
||||||
else stderr_log_alert(__VA_ARGS__); \
|
else stderr_log_alert(__VA_ARGS__); \
|
||||||
}
|
}
|
||||||
|
|
||||||
#else
|
#else
|
||||||
|
|
||||||
#define LOG_EMERG 0 /* system is unusable */
|
#define LOG_EMERG 0 /* system is unusable */
|
||||||
#define LOG_ALERT 1 /* action must be taken immediately */
|
#define LOG_ALERT 1 /* action must be taken immediately */
|
||||||
#define LOG_CRIT 2 /* critical conditions */
|
#define LOG_CRIT 2 /* critical conditions */
|
||||||
#define LOG_ERR 3 /* error conditions */
|
#define LOG_ERR 3 /* error conditions */
|
||||||
#define LOG_WARNING 4 /* warning conditions */
|
#define LOG_WARNING 4 /* warning conditions */
|
||||||
#define LOG_NOTICE 5 /* normal but significant condition */
|
#define LOG_NOTICE 5 /* normal but significant condition */
|
||||||
#define LOG_INFO 6 /* informational */
|
#define LOG_INFO 6 /* informational */
|
||||||
#define LOG_DEBUG 7 /* debug-level messages */
|
#define LOG_DEBUG 7 /* debug-level messages */
|
||||||
|
|
||||||
#define log_debug(...) stderr_log_debug(__VA_ARGS__)
|
#define log_debug(...) stderr_log_debug(__VA_ARGS__)
|
||||||
#define log_info(...) stderr_log_info(__VA_ARGS__)
|
#define log_info(...) stderr_log_info(__VA_ARGS__)
|
||||||
@@ -109,28 +108,16 @@ __attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 4)));
|
|||||||
#define log_crit(...) stderr_log_crit(__VA_ARGS__)
|
#define log_crit(...) stderr_log_crit(__VA_ARGS__)
|
||||||
#define log_alert(...) stderr_log_alert(__VA_ARGS__)
|
#define log_alert(...) stderr_log_alert(__VA_ARGS__)
|
||||||
#define log_emerg(...) stderr_log_emerg(__VA_ARGS__)
|
#define log_emerg(...) stderr_log_emerg(__VA_ARGS__)
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
|
||||||
int detect_log_level(const char *level);
|
|
||||||
|
|
||||||
/* Logger initialisation and shutdown */
|
/* Logger initialisation and shutdown */
|
||||||
|
bool logger_shutdown(void);
|
||||||
|
bool logger_init(t_configuration_options *opts, const char* ident, const char* level, const char* facility);
|
||||||
|
void logger_min_verbose(int minimum);
|
||||||
|
|
||||||
bool logger_init(t_configuration_options * opts, const char *ident);
|
extern int log_type;
|
||||||
|
extern int log_level;
|
||||||
|
|
||||||
bool logger_shutdown(void);
|
#endif
|
||||||
|
|
||||||
void logger_set_verbose(void);
|
|
||||||
void logger_set_terse(void);
|
|
||||||
|
|
||||||
void log_hint(const char *fmt, ...)
|
|
||||||
__attribute__((format(PG_PRINTF_ATTRIBUTE, 1, 2)));
|
|
||||||
void log_verbose(int level, const char *fmt, ...)
|
|
||||||
__attribute__((format(PG_PRINTF_ATTRIBUTE, 2, 3)));
|
|
||||||
|
|
||||||
extern int log_type;
|
|
||||||
extern int log_level;
|
|
||||||
extern int verbose_logging;
|
|
||||||
extern int terse_logging;
|
|
||||||
|
|
||||||
#endif /* _REPMGR_LOG_H_ */
|
|
||||||
|
|||||||
@@ -1,195 +1,62 @@
|
|||||||
###################################################
|
###################################################
|
||||||
# Replication Manager sample configuration file
|
# Replication Manager configuration file
|
||||||
###################################################
|
###################################################
|
||||||
|
|
||||||
# Some configuration items will be set with a default value; this
|
# Cluster name
|
||||||
# is noted for each item. Where no default value is shown, the
|
cluster=test
|
||||||
# parameter will be treated as empty or false.
|
|
||||||
|
|
||||||
# Required configuration items
|
# Node ID
|
||||||
# ============================
|
node=2
|
||||||
#
|
node_name=standby2
|
||||||
# repmgr and repmgrd require these items to be configured:
|
|
||||||
|
|
||||||
# Cluster name - this will be used by repmgr to generate its internal
|
# Connection information
|
||||||
# schema (pattern: "repmgr_{cluster}"); while this name will be quoted
|
conninfo='host=192.168.204.104'
|
||||||
# to preserve case, we recommend using lower case and avoiding whitespace
|
rsync_options=--archive --checksum --compress --progress --rsh="ssh -o \"StrictHostKeyChecking no\""
|
||||||
# to facilitate easier querying of the repmgr views and tables.
|
ssh_options=-o "StrictHostKeyChecking no"
|
||||||
#cluster=example_cluster
|
|
||||||
|
|
||||||
# Node ID and name
|
# How many seconds we wait for master response before declaring master failure
|
||||||
# (Note: we recommend to avoid naming nodes after their initial
|
master_response_timeout=60
|
||||||
# replication function, as this will cause confusion when e.g.
|
|
||||||
# "standby2" is promoted to primary)
|
|
||||||
#node=2 # a unique integer
|
|
||||||
#node_name=node2 # an arbitrary (but unique) string; we recommend using
|
|
||||||
# the server's hostname or another identifier unambiguously
|
|
||||||
# associated with the server to avoid confusion
|
|
||||||
|
|
||||||
# Database connection information as a conninfo string
|
# How many time we try to reconnect to master before starting failover procedure
|
||||||
# This must be accessible to all servers in the cluster; for details see:
|
reconnect_attempts=6
|
||||||
#
|
reconnect_interval=10
|
||||||
# https://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNSTRING
|
|
||||||
#
|
|
||||||
#conninfo='host=192.168.204.104 dbname=repmgr_db user=repmgr_usr'
|
|
||||||
#
|
|
||||||
# If repmgrd is in use, consider explicitly setting `connect_timeout` in the
|
|
||||||
# conninfo string to determine the length of time which elapses before
|
|
||||||
# a network connection attempt is abandoned; for details see:
|
|
||||||
#
|
|
||||||
# https://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNECT-CONNECT-TIMEOUT
|
|
||||||
|
|
||||||
# Optional configuration items
|
|
||||||
# ============================
|
|
||||||
|
|
||||||
# Replication settings
|
|
||||||
# ---------------------
|
|
||||||
|
|
||||||
# When using cascading replication, a standby can connect to another
|
|
||||||
# upstream standby node which is specified by setting 'upstream_node'.
|
|
||||||
# In that case, the upstream node must exist before the new standby
|
|
||||||
# can be registered. If 'upstream_node' is not set, then the standby
|
|
||||||
# will connect directly to the primary node.
|
|
||||||
#upstream_node=1
|
|
||||||
|
|
||||||
# use physical replication slots - PostgreSQL 9.4 and later only
|
|
||||||
# (default: 0)
|
|
||||||
#use_replication_slots=0
|
|
||||||
|
|
||||||
# NOTE: 'max_replication_slots' should be configured for at least the
|
|
||||||
# number of standbys which will connect to the primary.
|
|
||||||
|
|
||||||
# Logging and monitoring settings
|
|
||||||
# -------------------------------
|
|
||||||
|
|
||||||
# Log level: possible values are DEBUG, INFO, NOTICE, WARNING, ERR, ALERT, CRIT or EMERG
|
|
||||||
# (default: NOTICE)
|
|
||||||
#loglevel=NOTICE
|
|
||||||
|
|
||||||
# Logging facility: possible values are STDERR or - for Syslog integration - one of LOCAL0, LOCAL1, ..., LOCAL7, USER
|
|
||||||
# (default: STDERR)
|
|
||||||
#logfacility=STDERR
|
|
||||||
|
|
||||||
# stderr can be redirected to an arbitrary file:
|
|
||||||
#
|
|
||||||
#logfile='/var/log/repmgr/repmgr.log'
|
|
||||||
|
|
||||||
# event notifications can be passed to an arbitrary external program
|
|
||||||
# together with the following parameters:
|
|
||||||
#
|
|
||||||
# %n - node ID
|
|
||||||
# %e - event type
|
|
||||||
# %s - success (1 or 0)
|
|
||||||
# %t - timestamp
|
|
||||||
# %d - details
|
|
||||||
#
|
|
||||||
# the values provided for "%t" and "%d" will probably contain spaces,
|
|
||||||
# so should be quoted in the provided command configuration, e.g.:
|
|
||||||
#
|
|
||||||
#event_notification_command='/path/to/some/script %n %e %s "%t" "%d"'
|
|
||||||
|
|
||||||
# By default, all notifications will be passed; the notification types
|
|
||||||
# can be filtered to explicitly named ones:
|
|
||||||
#
|
|
||||||
#event_notifications=master_register,standby_register,witness_create
|
|
||||||
|
|
||||||
|
|
||||||
# Environment/command settings
|
|
||||||
# ----------------------------
|
|
||||||
|
|
||||||
# path to PostgreSQL binary directory (location of pg_ctl, pg_basebackup etc.)
|
|
||||||
# (if not provided, defaults to system $PATH)
|
|
||||||
#pg_bindir=/usr/bin/
|
|
||||||
|
|
||||||
# service control commands
|
|
||||||
#
|
|
||||||
# repmgr provides options to to override the default pg_ctl commands
|
|
||||||
# used to stop, start and restart the PostgreSQL cluster
|
|
||||||
#
|
|
||||||
# NOTE: These commands must be runnable on remote nodes as well for switchover
|
|
||||||
# to function correctly.
|
|
||||||
#
|
|
||||||
# If you use sudo, the user repmgr runs as (usually 'postgres') must have
|
|
||||||
# passwordless sudo access to execute the command
|
|
||||||
#
|
|
||||||
# For example, to use systemd, you may use the following configuration:
|
|
||||||
#
|
|
||||||
# # this is required when running sudo over ssh without -t:
|
|
||||||
# Defaults:postgres !requiretty
|
|
||||||
# postgres ALL = NOPASSWD: /usr/bin/systemctl stop postgresql-9.5, \
|
|
||||||
# /usr/bin/systemctl start postgresql-9.5, \
|
|
||||||
# /usr/bin/systemctl restart postgresql-9.5
|
|
||||||
#
|
|
||||||
# start_command = systemctl start postgresql-9.5
|
|
||||||
# stop_command = systemctl stop postgresql-9.5
|
|
||||||
# restart_command = systemctl restart postgresql-9.5
|
|
||||||
|
|
||||||
# external command options
|
|
||||||
|
|
||||||
#rsync_options=--archive --checksum --compress --progress --rsh="ssh -o \"StrictHostKeyChecking no\""
|
|
||||||
#ssh_options=-o "StrictHostKeyChecking no"
|
|
||||||
|
|
||||||
# external command arguments. Values shown are examples.
|
|
||||||
|
|
||||||
#pg_ctl_options='-s'
|
|
||||||
#pg_basebackup_options='--xlog-method=s'
|
|
||||||
|
|
||||||
|
|
||||||
# Standby clone settings
|
|
||||||
# ----------------------
|
|
||||||
#
|
|
||||||
# These settings apply when cloning a standby (`repmgr standby clone`).
|
|
||||||
|
|
||||||
# Tablespaces can be remapped from one file system location to another:
|
|
||||||
#
|
|
||||||
# tablespace_mapping=/path/to/original/tablespace=/path/to/new/tablespace
|
|
||||||
|
|
||||||
# You can specify a restore_command to be used in the recovery.conf that
|
|
||||||
# will be placed in the cloned standby
|
|
||||||
#
|
|
||||||
# restore_command = cp /path/to/archived/wals/%f %p
|
|
||||||
|
|
||||||
# Failover settings (repmgrd)
|
|
||||||
# ---------------------------
|
|
||||||
#
|
|
||||||
# These settings are only applied when repmgrd is running. Values shown
|
|
||||||
# are defaults.
|
|
||||||
|
|
||||||
# Number of seconds to wait for a response from the primary server before
|
|
||||||
# deciding it has failed.
|
|
||||||
|
|
||||||
#master_response_timeout=60
|
|
||||||
|
|
||||||
# Number of attempts at what interval (in seconds) to try and
|
|
||||||
# connect to a server to establish its status (e.g. master
|
|
||||||
# during failover)
|
|
||||||
#reconnect_attempts=6
|
|
||||||
#reconnect_interval=10
|
|
||||||
|
|
||||||
# Autofailover options
|
# Autofailover options
|
||||||
#failover=manual # one of 'automatic', 'manual' (default: manual)
|
failover=manual
|
||||||
# defines the action to take in the event of upstream failure
|
priority=-1
|
||||||
#
|
promote_command='repmgr standby promote -f /path/to/repmgr.conf'
|
||||||
# 'automatic': repmgrd will automatically attempt to promote the
|
follow_command='repmgr standby follow -f /path/to/repmgr.conf -W'
|
||||||
# node or follow the new upstream node
|
|
||||||
# 'manual': repmgrd will take no action and the mode will require
|
|
||||||
# manual attention to reattach it to replication
|
|
||||||
|
|
||||||
#priority=100 # indicate a preferred priorty for promoting nodes
|
# Log level: possible values are DEBUG, INFO, NOTICE, WARNING, ERR, ALERT, CRIT or EMERG
|
||||||
# a value of zero or less prevents the node being promoted to primary
|
# Default: NOTICE
|
||||||
# (default: 100)
|
loglevel=NOTICE
|
||||||
|
|
||||||
#promote_command='repmgr standby promote -f /path/to/repmgr.conf'
|
# Logging facility: possible values are STDERR or - for Syslog integration - one of LOCAL0, LOCAL1, ..., LOCAL7, USER
|
||||||
#follow_command='repmgr standby follow -f /path/to/repmgr.conf -W'
|
# Default: STDERR
|
||||||
|
logfacility=STDERR
|
||||||
|
|
||||||
# monitoring interval in seconds; default is 2
|
# path to pg_ctl executable
|
||||||
#monitor_interval_secs=2
|
pg_bindir=/usr/bin/
|
||||||
|
|
||||||
# change wait time for primary; before we bail out and exit when the primary
|
#
|
||||||
# disappears, we wait 'reconnect_attempts' * 'retry_promote_interval_secs'
|
# you may add command line arguments for pg_ctl
|
||||||
# seconds; by default this would be half an hour, as 'retry_promote_interval_secs'
|
#
|
||||||
# default value is 300)
|
# pg_ctl_options='-s'
|
||||||
#retry_promote_interval_secs=300
|
|
||||||
|
|
||||||
# Number of seconds after which the witness server resyncs the repl_nodes table
|
#
|
||||||
#witness_repl_nodes_sync_interval_secs=15
|
# redirect stderr to a logfile
|
||||||
|
#
|
||||||
|
# logfile='/var/log/repmgr.log'
|
||||||
|
|
||||||
|
#
|
||||||
|
# change monitoring interval; default is 2s
|
||||||
|
#
|
||||||
|
# monitor_interval_secs=2
|
||||||
|
|
||||||
|
#
|
||||||
|
# change wait time for master; before we bail out and exit when the
|
||||||
|
# master disappears, we wait 6 * retry_promote_interval_secs seconds;
|
||||||
|
# by default this would be half an hour (since sleep_delay default
|
||||||
|
# value is 300)
|
||||||
|
#
|
||||||
|
# retry_promote_interval_secs=300
|
||||||
|
|||||||
112
repmgr.h
112
repmgr.h
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* repmgr.h
|
* repmgr.h
|
||||||
* Copyright (c) 2ndQuadrant, 2010-2016
|
* Copyright (c) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
* This program is free software: you can redistribute it and/or modify
|
* This program is free software: you can redistribute it and/or modify
|
||||||
* it under the terms of the GNU General Public License as published by
|
* it under the terms of the GNU General Public License as published by
|
||||||
@@ -20,105 +20,55 @@
|
|||||||
#ifndef _REPMGR_H_
|
#ifndef _REPMGR_H_
|
||||||
#define _REPMGR_H_
|
#define _REPMGR_H_
|
||||||
|
|
||||||
#include <libpq-fe.h>
|
#include "postgres_fe.h"
|
||||||
#include <postgres_fe.h>
|
#include "getopt_long.h"
|
||||||
#include <getopt_long.h>
|
#include "libpq-fe.h"
|
||||||
|
|
||||||
#include "strutil.h"
|
#include "strutil.h"
|
||||||
#include "dbutils.h"
|
#include "dbutils.h"
|
||||||
#include "errcode.h"
|
#include "errcode.h"
|
||||||
|
|
||||||
|
#define PRIMARY_MODE 0
|
||||||
|
#define STANDBY_MODE 1
|
||||||
|
#define WITNESS_MODE 2
|
||||||
|
|
||||||
#include "config.h"
|
#include "config.h"
|
||||||
#include "dirmod.h"
|
#define MAXFILENAME 1024
|
||||||
|
#define ERRBUFF_SIZE 512
|
||||||
#define MIN_SUPPORTED_VERSION "9.3"
|
|
||||||
#define MIN_SUPPORTED_VERSION_NUM 90300
|
|
||||||
|
|
||||||
#define ERRBUFF_SIZE 512
|
|
||||||
|
|
||||||
|
#define DEFAULT_CONFIG_FILE "./repmgr.conf"
|
||||||
#define DEFAULT_WAL_KEEP_SEGMENTS "5000"
|
#define DEFAULT_WAL_KEEP_SEGMENTS "5000"
|
||||||
#define DEFAULT_DEST_DIR "."
|
#define DEFAULT_DEST_DIR "."
|
||||||
|
#define DEFAULT_MASTER_PORT "5432"
|
||||||
|
#define DEFAULT_DBNAME "postgres"
|
||||||
#define DEFAULT_REPMGR_SCHEMA_PREFIX "repmgr_"
|
#define DEFAULT_REPMGR_SCHEMA_PREFIX "repmgr_"
|
||||||
#define DEFAULT_PRIORITY 100
|
|
||||||
#define FAILOVER_NODES_MAX_CHECK 50
|
|
||||||
|
|
||||||
#define MANUAL_FAILOVER 0
|
#define MANUAL_FAILOVER 0
|
||||||
#define AUTOMATIC_FAILOVER 1
|
#define AUTOMATIC_FAILOVER 1
|
||||||
#define NODE_NOT_FOUND -1
|
|
||||||
#define NO_UPSTREAM_NODE -1
|
|
||||||
#define UNKNOWN_NODE_ID -1
|
|
||||||
|
|
||||||
#define OPT_HELP 1
|
|
||||||
#define OPT_CHECK_UPSTREAM_CONFIG 2
|
|
||||||
#define OPT_RECOVERY_MIN_APPLY_DELAY 3
|
|
||||||
#define OPT_IGNORE_EXTERNAL_CONFIG_FILES 4
|
|
||||||
#define OPT_CONFIG_ARCHIVE_DIR 5
|
|
||||||
#define OPT_PG_REWIND 6
|
|
||||||
#define OPT_PWPROMPT 7
|
|
||||||
#define OPT_CSV 8
|
|
||||||
#define OPT_INITDB_NO_PWPROMPT 9
|
|
||||||
|
|
||||||
|
|
||||||
/* Run time options type */
|
/* Run time options type */
|
||||||
typedef struct
|
typedef struct
|
||||||
{
|
{
|
||||||
|
|
||||||
char dbname[MAXLEN];
|
char dbname[MAXLEN];
|
||||||
char host[MAXLEN];
|
char host[MAXLEN];
|
||||||
char username[MAXLEN];
|
char username[MAXLEN];
|
||||||
char dest_dir[MAXPGPATH];
|
char dest_dir[MAXFILENAME];
|
||||||
char config_file[MAXPGPATH];
|
char config_file[MAXFILENAME];
|
||||||
char remote_user[MAXLEN];
|
char remote_user[MAXLEN];
|
||||||
char superuser[MAXLEN];
|
char wal_keep_segments[MAXLEN];
|
||||||
char wal_keep_segments[MAXLEN];
|
bool verbose;
|
||||||
bool verbose;
|
bool force;
|
||||||
bool terse;
|
bool wait_for_master;
|
||||||
bool force;
|
bool ignore_rsync_warn;
|
||||||
bool wait_for_master;
|
|
||||||
bool ignore_rsync_warn;
|
char masterport[MAXLEN];
|
||||||
bool witness_pwprompt;
|
char localport[MAXLEN];
|
||||||
bool rsync_only;
|
|
||||||
bool fast_checkpoint;
|
|
||||||
bool ignore_external_config_files;
|
|
||||||
bool csv_mode;
|
|
||||||
char masterport[MAXLEN];
|
|
||||||
/*
|
|
||||||
* configuration file parameters which can be overridden on the
|
|
||||||
* command line
|
|
||||||
*/
|
|
||||||
char loglevel[MAXLEN];
|
|
||||||
|
|
||||||
/* parameter used by STANDBY SWITCHOVER */
|
|
||||||
char remote_config_file[MAXLEN];
|
|
||||||
char pg_rewind[MAXPGPATH];
|
|
||||||
char pg_ctl_mode[MAXLEN];
|
|
||||||
/* parameter used by STANDBY {ARCHIVE_CONFIG | RESTORE_CONFIG} */
|
|
||||||
char config_archive_dir[MAXLEN];
|
|
||||||
/* parameter used by CLUSTER CLEANUP */
|
/* parameter used by CLUSTER CLEANUP */
|
||||||
int keep_history;
|
int keep_history;
|
||||||
|
} t_runtime_options;
|
||||||
|
|
||||||
char pg_bindir[MAXLEN];
|
#define T_RUNTIME_OPTIONS_INITIALIZER { "", "", "", "", "", "", DEFAULT_WAL_KEEP_SEGMENTS, false, false, false, false, "", "", 0 }
|
||||||
|
|
||||||
char recovery_min_apply_delay[MAXLEN];
|
|
||||||
|
|
||||||
/* deprecated command line options */
|
|
||||||
char localport[MAXLEN];
|
|
||||||
} t_runtime_options;
|
|
||||||
|
|
||||||
#define T_RUNTIME_OPTIONS_INITIALIZER { "", "", "", "", "", "", "", DEFAULT_WAL_KEEP_SEGMENTS, false, false, false, false, false, false, false, false, false, false, "", "", "", "", "fast", "", 0, "", "", ""}
|
|
||||||
|
|
||||||
struct BackupLabel
|
|
||||||
{
|
|
||||||
XLogRecPtr start_wal_location;
|
|
||||||
char start_wal_file[MAXLEN];
|
|
||||||
XLogRecPtr checkpoint_location;
|
|
||||||
char backup_from[MAXLEN];
|
|
||||||
char backup_method[MAXLEN];
|
|
||||||
char start_time[MAXLEN];
|
|
||||||
char label[MAXLEN];
|
|
||||||
XLogRecPtr min_failover_slot_lsn;
|
|
||||||
};
|
|
||||||
|
|
||||||
extern char repmgr_schema[MAXLEN];
|
|
||||||
extern bool config_file_found;
|
|
||||||
|
|
||||||
#endif
|
#endif
|
||||||
|
|||||||
11
repmgr.sql
11
repmgr.sql
@@ -1,7 +1,7 @@
|
|||||||
/*
|
/*
|
||||||
* repmgr.sql
|
* repmgr.sql
|
||||||
*
|
*
|
||||||
* Copyright (C) 2ndQuadrant, 2010-2016
|
* Copyright (C) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
*/
|
*/
|
||||||
|
|
||||||
@@ -59,12 +59,3 @@ WHERE (standby_node, last_monitor_time) IN (SELECT standby_node, MAX(last_monito
|
|||||||
ALTER VIEW repl_status OWNER TO repmgr;
|
ALTER VIEW repl_status OWNER TO repmgr;
|
||||||
|
|
||||||
CREATE INDEX idx_repl_status_sort ON repl_monitor(last_monitor_time, standby_node);
|
CREATE INDEX idx_repl_status_sort ON repl_monitor(last_monitor_time, standby_node);
|
||||||
|
|
||||||
/*
|
|
||||||
* This view shows the list of nodes with the information of which one is the upstream
|
|
||||||
* in each case (when appliable)
|
|
||||||
*/
|
|
||||||
CREATE VIEW repl_show_nodes AS
|
|
||||||
SELECT rn.id, rn.conninfo, rn.type, rn.name, rn.cluster,
|
|
||||||
rn.priority, rn.active, sq.name AS upstream_node_name
|
|
||||||
FROM repl_nodes as rn LEFT JOIN repl_nodes AS sq ON sq.id=rn.upstream_node_id;
|
|
||||||
|
|||||||
@@ -1,7 +1,6 @@
|
|||||||
#
|
#
|
||||||
# Makefile
|
# Makefile
|
||||||
#
|
# Copyright (c) 2ndQuadrant, 2010
|
||||||
# Copyright (c) 2ndQuadrant, 2010-2016
|
|
||||||
#
|
#
|
||||||
|
|
||||||
MODULE_big = repmgr_funcs
|
MODULE_big = repmgr_funcs
|
||||||
|
|||||||
@@ -1,85 +0,0 @@
|
|||||||
/*
|
|
||||||
* Update a repmgr 2.x installation to repmgr 3.0
|
|
||||||
* ----------------------------------------------
|
|
||||||
*
|
|
||||||
* 1. Stop any running repmgrd instances
|
|
||||||
* 2. On the master node, execute the SQL statements listed below,
|
|
||||||
* taking care to identify the master node and any inactive
|
|
||||||
* nodes
|
|
||||||
* 3. Restart repmgrd (being sure to use repmgr 3.0)
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Set the search path to the name of the schema used by
|
|
||||||
* your repmgr installation
|
|
||||||
* (this should be "repmgr_" + the cluster name defined in
|
|
||||||
* 'repmgr.conf')
|
|
||||||
*/
|
|
||||||
|
|
||||||
-- SET search_path TO 'name_of_repmgr_schema';
|
|
||||||
|
|
||||||
BEGIN;
|
|
||||||
|
|
||||||
ALTER TABLE repl_nodes RENAME TO repl_nodes2_0;
|
|
||||||
|
|
||||||
CREATE TABLE repl_nodes (
|
|
||||||
id INTEGER PRIMARY KEY,
|
|
||||||
type TEXT NOT NULL CHECK (type IN('master','standby','witness')),
|
|
||||||
upstream_node_id INTEGER NULL REFERENCES repl_nodes (id),
|
|
||||||
cluster TEXT NOT NULL,
|
|
||||||
name TEXT NOT NULL,
|
|
||||||
conninfo TEXT NOT NULL,
|
|
||||||
slot_name TEXT NULL,
|
|
||||||
priority INTEGER NOT NULL,
|
|
||||||
active BOOLEAN NOT NULL DEFAULT TRUE
|
|
||||||
);
|
|
||||||
|
|
||||||
INSERT INTO repl_nodes
|
|
||||||
(id, type, cluster, name, conninfo, priority)
|
|
||||||
SELECT id,
|
|
||||||
CASE
|
|
||||||
WHEN witness IS TRUE THEN 'witness'
|
|
||||||
ELSE 'standby'
|
|
||||||
END AS type,
|
|
||||||
cluster,
|
|
||||||
name,
|
|
||||||
conninfo,
|
|
||||||
priority + 100
|
|
||||||
FROM repl_nodes2_0;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* You'll need to set the master explicitly; the following query
|
|
||||||
* should identify the master node ID but will only work if all
|
|
||||||
* standby servers are connected:
|
|
||||||
*
|
|
||||||
* SELECT id FROM repmgr_test.repl_nodes WHERE name NOT IN (SELECT application_name FROM pg_stat_replication)
|
|
||||||
*
|
|
||||||
* If in doubt, execute 'repmgr cluster show' will definitively identify
|
|
||||||
* the master.
|
|
||||||
*/
|
|
||||||
UPDATE repl_nodes SET type = 'master' WHERE id = $master_id;
|
|
||||||
|
|
||||||
/* If any nodes are known to be inactive, update them here */
|
|
||||||
|
|
||||||
-- UPDATE repl_nodes SET active = FALSE WHERE id IN (...);
|
|
||||||
|
|
||||||
/* There's also an event table which we need to create */
|
|
||||||
CREATE TABLE repl_events (
|
|
||||||
node_id INTEGER NOT NULL,
|
|
||||||
event TEXT NOT NULL,
|
|
||||||
successful BOOLEAN NOT NULL DEFAULT TRUE,
|
|
||||||
event_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
|
|
||||||
details TEXT NULL
|
|
||||||
);
|
|
||||||
|
|
||||||
/* When you're sure of your changes, commit them */
|
|
||||||
|
|
||||||
-- COMMIT;
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
|
||||||
* execute the following command when you are sure you no longer
|
|
||||||
* require the old table:
|
|
||||||
*/
|
|
||||||
|
|
||||||
-- DROP TABLE repl_nodes2_0;
|
|
||||||
@@ -1,35 +0,0 @@
|
|||||||
/*
|
|
||||||
* Update a repmgr 3.0 installation to repmgr 3.1
|
|
||||||
* ----------------------------------------------
|
|
||||||
*
|
|
||||||
* The new repmgr package should be installed first. Then
|
|
||||||
* carry out these steps:
|
|
||||||
*
|
|
||||||
* 1. (If repmgrd is used) stop any running repmgrd instances
|
|
||||||
* 2. On the master node, execute the SQL statements listed below
|
|
||||||
* 3. (If repmgrd is used) restart repmgrd
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* If your repmgr installation is not included in your repmgr
|
|
||||||
* user's search path, please set the search path to the name
|
|
||||||
* of the repmgr schema to ensure objects are installed in
|
|
||||||
* the correct location.
|
|
||||||
*
|
|
||||||
* The repmgr schema is "repmgr_" + the cluster name defined in
|
|
||||||
* 'repmgr.conf'.
|
|
||||||
*/
|
|
||||||
|
|
||||||
-- SET search_path TO 'name_of_repmgr_schema';
|
|
||||||
|
|
||||||
BEGIN;
|
|
||||||
|
|
||||||
-- New view "repl_show_nodes" which also displays the server's
|
|
||||||
-- upstream node
|
|
||||||
|
|
||||||
CREATE VIEW repl_show_nodes AS
|
|
||||||
SELECT rn.id, rn.conninfo, rn.type, rn.name, rn.cluster,
|
|
||||||
rn.priority, rn.active, sq.name AS upstream_node_name
|
|
||||||
FROM repl_nodes as rn LEFT JOIN repl_nodes AS sq ON sq.id=rn.upstream_node_id;
|
|
||||||
|
|
||||||
COMMIT;
|
|
||||||
@@ -1,32 +0,0 @@
|
|||||||
/*
|
|
||||||
* Update a repmgr 3.1.1 installation to repmgr 3.1.2
|
|
||||||
* --------------------------------------------------
|
|
||||||
*
|
|
||||||
* This update is only required if repmgrd is being used in conjunction
|
|
||||||
* with a witness server.
|
|
||||||
*
|
|
||||||
* The new repmgr package should be installed first. Then
|
|
||||||
* carry out these steps:
|
|
||||||
*
|
|
||||||
* 1. (If repmgrd is used) stop any running repmgrd instances
|
|
||||||
* 2. On the master node, execute the SQL statement listed below
|
|
||||||
* 3. (If repmgrd is used) restart repmgrd
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* If your repmgr installation is not included in your repmgr
|
|
||||||
* user's search path, please set the search path to the name
|
|
||||||
* of the repmgr schema to ensure objects are installed in
|
|
||||||
* the correct location.
|
|
||||||
*
|
|
||||||
* The repmgr schema is "repmgr_" + the cluster name defined in
|
|
||||||
* 'repmgr.conf'.
|
|
||||||
*/
|
|
||||||
|
|
||||||
-- SET search_path TO 'name_of_repmgr_schema';
|
|
||||||
|
|
||||||
BEGIN;
|
|
||||||
|
|
||||||
ALTER TABLE repl_nodes DROP CONSTRAINT repl_nodes_upstream_node_id_fkey,
|
|
||||||
ADD CONSTRAINT repl_nodes_upstream_node_id_fkey FOREIGN KEY (upstream_node_id) REFERENCES repl_nodes(id) DEFERRABLE;
|
|
||||||
COMMIT;
|
|
||||||
@@ -9,7 +9,6 @@
|
|||||||
#include "fmgr.h"
|
#include "fmgr.h"
|
||||||
#include "access/xlog.h"
|
#include "access/xlog.h"
|
||||||
#include "miscadmin.h"
|
#include "miscadmin.h"
|
||||||
#include "replication/walreceiver.h"
|
|
||||||
#include "storage/ipc.h"
|
#include "storage/ipc.h"
|
||||||
#include "storage/lwlock.h"
|
#include "storage/lwlock.h"
|
||||||
#include "storage/procarray.h"
|
#include "storage/procarray.h"
|
||||||
@@ -19,7 +18,7 @@
|
|||||||
#include "utils/timestamp.h"
|
#include "utils/timestamp.h"
|
||||||
|
|
||||||
/* same definition as the one in xlog_internal.h */
|
/* same definition as the one in xlog_internal.h */
|
||||||
#define MAXFNAMELEN 64
|
#define MAXFNAMELEN 64
|
||||||
|
|
||||||
PG_MODULE_MAGIC;
|
PG_MODULE_MAGIC;
|
||||||
|
|
||||||
@@ -28,38 +27,37 @@ PG_MODULE_MAGIC;
|
|||||||
*/
|
*/
|
||||||
typedef struct repmgrSharedState
|
typedef struct repmgrSharedState
|
||||||
{
|
{
|
||||||
LWLockId lock; /* protects search/modification */
|
LWLockId lock; /* protects search/modification */
|
||||||
char location[MAXFNAMELEN]; /* last known xlog location */
|
char location[MAXFNAMELEN]; /* last known xlog location */
|
||||||
TimestampTz last_updated;
|
TimestampTz last_updated;
|
||||||
} repmgrSharedState;
|
} repmgrSharedState;
|
||||||
|
|
||||||
/* Links to shared memory state */
|
/* Links to shared memory state */
|
||||||
static repmgrSharedState *shared_state = NULL;
|
static repmgrSharedState *shared_state = NULL;
|
||||||
|
|
||||||
static shmem_startup_hook_type prev_shmem_startup_hook = NULL;
|
static shmem_startup_hook_type prev_shmem_startup_hook = NULL;
|
||||||
|
|
||||||
void _PG_init(void);
|
void _PG_init(void);
|
||||||
void _PG_fini(void);
|
void _PG_fini(void);
|
||||||
|
|
||||||
static void repmgr_shmem_startup(void);
|
static void repmgr_shmem_startup(void);
|
||||||
static Size repmgr_memsize(void);
|
static Size repmgr_memsize(void);
|
||||||
|
|
||||||
static bool repmgr_set_standby_location(char *locationstr);
|
static bool repmgr_set_standby_location(char *locationstr);
|
||||||
|
|
||||||
Datum repmgr_update_standby_location(PG_FUNCTION_ARGS);
|
Datum repmgr_update_standby_location(PG_FUNCTION_ARGS);
|
||||||
Datum repmgr_get_last_standby_location(PG_FUNCTION_ARGS);
|
Datum repmgr_get_last_standby_location(PG_FUNCTION_ARGS);
|
||||||
|
|
||||||
PG_FUNCTION_INFO_V1(repmgr_update_standby_location);
|
PG_FUNCTION_INFO_V1(repmgr_update_standby_location);
|
||||||
PG_FUNCTION_INFO_V1(repmgr_get_last_standby_location);
|
PG_FUNCTION_INFO_V1(repmgr_get_last_standby_location);
|
||||||
|
|
||||||
Datum repmgr_update_last_updated(PG_FUNCTION_ARGS);
|
Datum repmgr_update_last_updated(PG_FUNCTION_ARGS);
|
||||||
Datum repmgr_get_last_updated(PG_FUNCTION_ARGS);
|
Datum repmgr_get_last_updated(PG_FUNCTION_ARGS);
|
||||||
|
|
||||||
PG_FUNCTION_INFO_V1(repmgr_update_last_updated);
|
PG_FUNCTION_INFO_V1(repmgr_update_last_updated);
|
||||||
PG_FUNCTION_INFO_V1(repmgr_get_last_updated);
|
PG_FUNCTION_INFO_V1(repmgr_get_last_updated);
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Module load callback
|
* Module load callback
|
||||||
*/
|
*/
|
||||||
@@ -70,9 +68,9 @@ _PG_init(void)
|
|||||||
* In order to create our shared memory area, we have to be loaded via
|
* In order to create our shared memory area, we have to be loaded via
|
||||||
* shared_preload_libraries. If not, fall out without hooking into any of
|
* shared_preload_libraries. If not, fall out without hooking into any of
|
||||||
* the main system. (We don't throw error here because it seems useful to
|
* the main system. (We don't throw error here because it seems useful to
|
||||||
* allow the repmgr functions to be created even when the module isn't
|
* allow the repmgr functions to be created even when the
|
||||||
* active. The functions must protect themselves against being called
|
* module isn't active. The functions must protect themselves against
|
||||||
* then, however.)
|
* being called then, however.)
|
||||||
*/
|
*/
|
||||||
if (!process_shared_preload_libraries_in_progress)
|
if (!process_shared_preload_libraries_in_progress)
|
||||||
return;
|
return;
|
||||||
@@ -83,12 +81,7 @@ _PG_init(void)
|
|||||||
* resources in repmgr_shmem_startup().
|
* resources in repmgr_shmem_startup().
|
||||||
*/
|
*/
|
||||||
RequestAddinShmemSpace(repmgr_memsize());
|
RequestAddinShmemSpace(repmgr_memsize());
|
||||||
|
|
||||||
#if (PG_VERSION_NUM >= 90600)
|
|
||||||
RequestNamedLWLockTranche("repmgr", 1);
|
|
||||||
#else
|
|
||||||
RequestAddinLWLocks(1);
|
RequestAddinLWLocks(1);
|
||||||
#endif
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Install hooks.
|
* Install hooks.
|
||||||
@@ -127,19 +120,15 @@ repmgr_shmem_startup(void)
|
|||||||
LWLockAcquire(AddinShmemInitLock, LW_EXCLUSIVE);
|
LWLockAcquire(AddinShmemInitLock, LW_EXCLUSIVE);
|
||||||
|
|
||||||
shared_state = ShmemInitStruct("repmgr shared state",
|
shared_state = ShmemInitStruct("repmgr shared state",
|
||||||
sizeof(repmgrSharedState),
|
sizeof(repmgrSharedState),
|
||||||
&found);
|
&found);
|
||||||
|
|
||||||
if (!found)
|
if (!found)
|
||||||
{
|
{
|
||||||
/* First time through ... */
|
/* First time through ... */
|
||||||
#if (PG_VERSION_NUM >= 90600)
|
|
||||||
shared_state->lock = &(GetNamedLWLockTranche("repmgr"))->lock;
|
|
||||||
#else
|
|
||||||
shared_state->lock = LWLockAssign();
|
shared_state->lock = LWLockAssign();
|
||||||
#endif
|
|
||||||
snprintf(shared_state->location,
|
snprintf(shared_state->location,
|
||||||
sizeof(shared_state->location), "%X/%X", 0, 0);
|
sizeof(shared_state->location), "%X/%X", 0, 0);
|
||||||
}
|
}
|
||||||
|
|
||||||
LWLockRelease(AddinShmemInitLock);
|
LWLockRelease(AddinShmemInitLock);
|
||||||
@@ -152,20 +141,20 @@ repmgr_shmem_startup(void)
|
|||||||
static Size
|
static Size
|
||||||
repmgr_memsize(void)
|
repmgr_memsize(void)
|
||||||
{
|
{
|
||||||
return MAXALIGN(sizeof(repmgrSharedState));
|
return MAXALIGN(sizeof(repmgrSharedState));
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
static bool
|
static bool
|
||||||
repmgr_set_standby_location(char *locationstr)
|
repmgr_set_standby_location(char *locationstr)
|
||||||
{
|
{
|
||||||
/* Safety check... */
|
/* Safety check... */
|
||||||
if (!shared_state)
|
if (!shared_state)
|
||||||
return false;
|
return false;
|
||||||
|
|
||||||
LWLockAcquire(shared_state->lock, LW_EXCLUSIVE);
|
LWLockAcquire(shared_state->lock, LW_EXCLUSIVE);
|
||||||
strncpy(shared_state->location, locationstr, MAXFNAMELEN);
|
strncpy(shared_state->location, locationstr, MAXFNAMELEN);
|
||||||
LWLockRelease(shared_state->lock);
|
LWLockRelease(shared_state->lock);
|
||||||
|
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
@@ -177,7 +166,7 @@ repmgr_set_standby_location(char *locationstr)
|
|||||||
Datum
|
Datum
|
||||||
repmgr_get_last_standby_location(PG_FUNCTION_ARGS)
|
repmgr_get_last_standby_location(PG_FUNCTION_ARGS)
|
||||||
{
|
{
|
||||||
char location[MAXFNAMELEN];
|
char location[MAXFNAMELEN];
|
||||||
|
|
||||||
/* Safety check... */
|
/* Safety check... */
|
||||||
if (!shared_state)
|
if (!shared_state)
|
||||||
@@ -195,14 +184,14 @@ repmgr_get_last_standby_location(PG_FUNCTION_ARGS)
|
|||||||
Datum
|
Datum
|
||||||
repmgr_update_standby_location(PG_FUNCTION_ARGS)
|
repmgr_update_standby_location(PG_FUNCTION_ARGS)
|
||||||
{
|
{
|
||||||
text *location = PG_GETARG_TEXT_P(0);
|
text *location = PG_GETARG_TEXT_P(0);
|
||||||
char *locationstr;
|
char *locationstr;
|
||||||
|
|
||||||
/* Safety check... */
|
/* Safety check... */
|
||||||
if (!shared_state)
|
if (!shared_state)
|
||||||
PG_RETURN_BOOL(false);
|
PG_RETURN_BOOL(false);
|
||||||
|
|
||||||
locationstr = text_to_cstring(location);
|
locationstr = text_to_cstring(location);
|
||||||
|
|
||||||
PG_RETURN_BOOL(repmgr_set_standby_location(locationstr));
|
PG_RETURN_BOOL(repmgr_set_standby_location(locationstr));
|
||||||
}
|
}
|
||||||
@@ -231,9 +220,9 @@ repmgr_get_last_updated(PG_FUNCTION_ARGS)
|
|||||||
{
|
{
|
||||||
TimestampTz last_updated;
|
TimestampTz last_updated;
|
||||||
|
|
||||||
/* Safety check... */
|
/* Safety check... */
|
||||||
if (!shared_state)
|
if (!shared_state)
|
||||||
PG_RETURN_NULL();
|
PG_RETURN_NULL();
|
||||||
|
|
||||||
LWLockAcquire(shared_state->lock, LW_EXCLUSIVE);
|
LWLockAcquire(shared_state->lock, LW_EXCLUSIVE);
|
||||||
last_updated = shared_state->last_updated;
|
last_updated = shared_state->last_updated;
|
||||||
@@ -241,5 +230,3 @@ repmgr_get_last_updated(PG_FUNCTION_ARGS)
|
|||||||
|
|
||||||
PG_RETURN_TIMESTAMPTZ(last_updated);
|
PG_RETURN_TIMESTAMPTZ(last_updated);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|||||||
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* repmgr_function.sql
|
* repmgr_function.sql
|
||||||
* Copyright (c) 2ndQuadrant, 2010-2016
|
* Copyright (c) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
*/
|
*/
|
||||||
|
|
||||||
|
|||||||
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* uninstall_repmgr_funcs.sql
|
* uninstall_repmgr_funcs.sql
|
||||||
* Copyright (c) 2ndQuadrant, 2010-2016
|
* Copyright (c) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
*/
|
*/
|
||||||
|
|
||||||
|
|||||||
33
strutil.c
33
strutil.c
@@ -1,7 +1,7 @@
|
|||||||
/*
|
/*
|
||||||
* strutil.c
|
* strutil.c
|
||||||
*
|
*
|
||||||
* Copyright (C) 2ndQuadrant, 2010-2016
|
* Copyright (C) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
* This program is free software: you can redistribute it and/or modify
|
* This program is free software: you can redistribute it and/or modify
|
||||||
* it under the terms of the GNU General Public License as published by
|
* it under the terms of the GNU General Public License as published by
|
||||||
@@ -25,21 +25,29 @@
|
|||||||
#include "log.h"
|
#include "log.h"
|
||||||
#include "strutil.h"
|
#include "strutil.h"
|
||||||
|
|
||||||
static int
|
static int xvsnprintf(char *str, size_t size, const char *format, va_list ap) __attribute__ ((format (PG_PRINTF_ATTRIBUTE, 3, 0)));
|
||||||
xvsnprintf(char *str, size_t size, const char *format, va_list ap)
|
|
||||||
__attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 0)));
|
/* Add strnlen on platforms that don't have it, like OS X */
|
||||||
|
#ifndef strnlen
|
||||||
|
size_t
|
||||||
|
strnlen(const char *s, size_t n)
|
||||||
|
{
|
||||||
|
const char *end = (const char *) memchr(s, '\0', n);
|
||||||
|
return(end ? end - s : n);
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
static int
|
static int
|
||||||
xvsnprintf(char *str, size_t size, const char *format, va_list ap)
|
xvsnprintf(char *str, size_t size, const char *format, va_list ap)
|
||||||
{
|
{
|
||||||
int retval;
|
int retval;
|
||||||
|
|
||||||
retval = vsnprintf(str, size, format, ap);
|
retval = vsnprintf(str, size, format, ap);
|
||||||
|
|
||||||
if (retval >= (int) size)
|
if (retval >= (int)size)
|
||||||
{
|
{
|
||||||
log_err(_("Buffer of size not large enough to format entire string '%s'\n"),
|
log_err(_("Buffer of size not large enough to format entire string '%s'\n"),
|
||||||
str);
|
str);
|
||||||
exit(ERR_STR_OVERFLOW);
|
exit(ERR_STR_OVERFLOW);
|
||||||
}
|
}
|
||||||
|
|
||||||
@@ -48,10 +56,10 @@ xvsnprintf(char *str, size_t size, const char *format, va_list ap)
|
|||||||
|
|
||||||
|
|
||||||
int
|
int
|
||||||
xsnprintf(char *str, size_t size, const char *format,...)
|
xsnprintf(char *str, size_t size, const char *format, ...)
|
||||||
{
|
{
|
||||||
va_list arglist;
|
va_list arglist;
|
||||||
int retval;
|
int retval;
|
||||||
|
|
||||||
va_start(arglist, format);
|
va_start(arglist, format);
|
||||||
retval = xvsnprintf(str, size, format, arglist);
|
retval = xvsnprintf(str, size, format, arglist);
|
||||||
@@ -62,7 +70,7 @@ xsnprintf(char *str, size_t size, const char *format,...)
|
|||||||
|
|
||||||
|
|
||||||
int
|
int
|
||||||
sqlquery_snprintf(char *str, const char *format,...)
|
sqlquery_snprintf(char *str, const char *format, ...)
|
||||||
{
|
{
|
||||||
va_list arglist;
|
va_list arglist;
|
||||||
int retval;
|
int retval;
|
||||||
@@ -75,8 +83,7 @@ sqlquery_snprintf(char *str, const char *format,...)
|
|||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
int
|
int maxlen_snprintf(char *str, const char *format, ...)
|
||||||
maxlen_snprintf(char *str, const char *format,...)
|
|
||||||
{
|
{
|
||||||
va_list arglist;
|
va_list arglist;
|
||||||
int retval;
|
int retval;
|
||||||
|
|||||||
28
strutil.h
28
strutil.h
@@ -1,6 +1,6 @@
|
|||||||
/*
|
/*
|
||||||
* strutil.h
|
* strutil.h
|
||||||
* Copyright (C) 2ndQuadrant, 2010-2016
|
* Copyright (C) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
*
|
*
|
||||||
* This program is free software: you can redistribute it and/or modify
|
* This program is free software: you can redistribute it and/or modify
|
||||||
@@ -22,8 +22,7 @@
|
|||||||
#define _STRUTIL_H_
|
#define _STRUTIL_H_
|
||||||
|
|
||||||
#include <stdlib.h>
|
#include <stdlib.h>
|
||||||
#include "errcode.h"
|
#include <errcode.h>
|
||||||
|
|
||||||
|
|
||||||
#define QUERY_STR_LEN 8192
|
#define QUERY_STR_LEN 8192
|
||||||
#define MAXLEN 1024
|
#define MAXLEN 1024
|
||||||
@@ -31,21 +30,14 @@
|
|||||||
#define MAXVERSIONSTR 16
|
#define MAXVERSIONSTR 16
|
||||||
#define MAXCONNINFO 1024
|
#define MAXCONNINFO 1024
|
||||||
|
|
||||||
/* Why? http://stackoverflow.com/a/5459929/398670 */
|
|
||||||
#define STR(x) CppAsString(x)
|
|
||||||
|
|
||||||
#define MAXLEN_STR STR(MAXLEN)
|
extern int xsnprintf(char *str, size_t size, const char *format, ...) __attribute__ ((format (PG_PRINTF_ATTRIBUTE, 3, 4)));
|
||||||
|
extern int sqlquery_snprintf(char *str, const char *format, ...) __attribute__ ((format (PG_PRINTF_ATTRIBUTE, 2, 3)));
|
||||||
|
extern int maxlen_snprintf(char *str, const char *format, ...) __attribute__ ((format (PG_PRINTF_ATTRIBUTE, 2, 3)));
|
||||||
|
|
||||||
extern int
|
/* Add strnlen on platforms that don't have it, like OS X */
|
||||||
xsnprintf(char *str, size_t size, const char *format,...)
|
#ifndef strnlen
|
||||||
__attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 4)));
|
extern size_t strnlen(const char *s, size_t n);
|
||||||
|
#endif
|
||||||
|
|
||||||
extern int
|
#endif /* _STRUTIL_H_ */
|
||||||
sqlquery_snprintf(char *str, const char *format,...)
|
|
||||||
__attribute__((format(PG_PRINTF_ATTRIBUTE, 2, 3)));
|
|
||||||
|
|
||||||
extern int
|
|
||||||
maxlen_snprintf(char *str, const char *format,...)
|
|
||||||
__attribute__((format(PG_PRINTF_ATTRIBUTE, 2, 3)));
|
|
||||||
|
|
||||||
#endif /* _STRUTIL_H_ */
|
|
||||||
|
|||||||
@@ -1,7 +1,7 @@
|
|||||||
/*
|
/*
|
||||||
* uninstall_repmgr.sql
|
* uninstall_repmgr.sql
|
||||||
*
|
*
|
||||||
* Copyright (C) 2ndQuadrant, 2010-2016
|
* Copyright (C) 2ndQuadrant, 2010-2014
|
||||||
*
|
*
|
||||||
*/
|
*/
|
||||||
|
|
||||||
|
|||||||
Reference in New Issue
Block a user