These are now prefixed with "service_" to emphasize that they're
OS-level commands, not repmgr ones; also added reload and promote
commands:
service_start_command
service_stop_command
service_restart_command
service_reload_command
service_promote_command
GitHub #169
Previously the code assumed repmgr node IDs to be sequential,
which is not guaranteed to be the case. With a non-sequential
list of node IDs, an incorrect node id would be displayed,
and memory accessed beyond the bounds of the matrix array.
The refactored code is considerably less elegant than the original
but will correctly handle a non-sequential sequence of node IDs.
- use the remote user setting, like other SSH-based remote operations
(avoid hardcoding the user name)
- enable `repmgr cluster matrix' to accept the cluster name, node id
and the database connection information instead of requiring repmgr.conf;
this means we don't have to assume that repmgr.conf is in one
of the default locations
We separate the code that builds the cube from the code that displays
it, in preparation for reusing the cube somewhere else, e.g. for
automatic failover detection.
We separate the code that builds the matrix from the code that
displays it, in preparation for reusing the matrix somewhere else,
e.g. for automatic failover detection.
- use the remote user setting, like other SSH-based remote operations
(avoid hardcoding the user name)
- enable `repmgr cluster show` to accept the cluster name and the
database connection information instead of requiring repmgr.conf;
this means we don't have to assume that repmgr.conf is in one
of the default locations
Currently repmgr assumes the SSH hostname will be the same as the
database hostname, and it's easy enough now to extract this
from the node's conninfo string.
We can consider re-adding this in the next release if required.
- The "cluster matrix" command supports CSV mode via the --csv
switch.
- Add the optional ssh_hostname configuration parameter, which is
required by "cluster matrix".
- A corresponding ssh_hostname column has been added to the repl_nodes
table and to the repl_show_nodes view.
The examples of `promote_command` and `follow_command` reference the
`repmgr.conf` file under a different path from the rest of the README.
This makes them consistent with the rest of the README.
Causes repmgr to wait for the updated node record to propagate
to the standby before exiting. This can be used to ensure that
actions which depend on the standby's node record being synchronised
(such as starting repmgrd) are not carried out prematurely.
Addresses GitHub #103
If failover=automatic, it would be reasonable to expect repmgrd to
consider this node as a promotion candidate, however this will not
happen if it is marked inactive. This often happens when a failed
primary is recloned as a standby but not re-registered, and if
repmgrd would run it would give the incorrect impression that
failover capability is available.
Addresses GitHub #153.
Now that repmgr uses pg_basebackup's `--xlog-method=stream` setting by
default, and enables provision of `restore_command`, there's no reason
to require `wal_keep_segments` to be set in the default use-case.
`repmgr standby clone` will now only fail with an error if `wal_keep_segments`
is zero and one of the following cases applies:
* `--rsync-only` clone with no `restore_command` set
* clone with pg_basebackup and `--xlog-method=fetch`
* -w/--wal-keep-segments specified on the command line
If, for whatever reason, it's necessary to perform a standby clone
with `wal_keep_segments=0` in one of the above cases, specifying
`-w/--wal-keep-segments=0` on the command line will effectively
override the check.
GitHub #204
Previously repmgr only checked that 'max_wal_senders' is a positive value.
It will now additionally verify that the requisite number of replication
connections can actually be made before commencing with a cloning operation
using pg_basebackup.
GitHub #214
This is already effectively optional; in 3.2 we will ensure it becomes
fully optional (mainly by deprecating --ignore-external-config-files
and replacing it with --copy-external-config-files).
In switchover mode, if no remote repmgr config file is provided with `-C`,
repmgr attempts to look for a file with the same path as the local
file (provided with `-f/--config-file`). However if this was not specified,
repmgr would execute `ls` with an empty filepath on the remote host, which
appeared to succeed, causing subsequent remote repmgr command executions
to fail as a blank value was provided for `-f/--config-file`.
Fixes GitHub #229.
Previously, if e.g. a non-superuser connection is used to get a value
like `data_directory`, which is available to superusers only, it
would return true.
Refactor recovery.conf generation to take into account the node being
cloned from might not be the intended upstream node, e.g. "grandchild"
node being cloned direct from the master ("grandparent") rather than
the intended parent node.
This extends functionality introduced with Barman support and ensures
that behaviour of cascaded standby cloning is consistent, regardless
of cloning method.
