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61 Commits

Author SHA1 Message Date
Ian Barwick
8fd0c4ad83 repmgr: assume node is actually shutting down if pingable and that's the reported status 2018-01-12 21:53:37 +09:00
Ian Barwick
7ccae6c2b1 repmgr: automatically create slot name if missing 
It's possible that a node was registered with "use_replication_slots=false"
but that was later changed to "use_replication_slots=true". If the node
was not subsequently re-registered, the node record will contain an empty
slot name, which will cause any slot creation operation during
"standby follow" or "node rejoin" to fail.

To prevent this happening, check for an empty slot name and automatically
set before proceeding.

Addresses GitHub #343.
 2018-01-11 14:47:50 +09:00
Ian Barwick
61d46172b9 repmgr: catch possible corner case when checking node shutdown status 
It's conceivable that PQping is returning "no response" but the
shutdown hasn't quite completed.
 2018-01-10 15:09:21 +09:00
Ian Barwick
841f03aeba Fix query in is_active_bdr_node() 
Boolean column was not being checked correctly.

Also add detail output in "repmgr node role --check", where the function
is called.
 2018-01-04 14:55:51 +09:00
Ian Barwick
5d8ec136e6 repmgr node rejoin: handle missing node record correctly 
If a connection was provided for a database other than the "repmgr"
database, error was logged but execution continued, resulting in
the connection being finished twice.

Addresses GitHub #358.
 2018-01-03 15:17:01 +09:00
Ian Barwick
26a9e848fd Update copyright notices to 2018 2018-01-02 10:19:46 +09:00
Ian Barwick
8c121da8a1 Add diagnostic option "repmgr node check --has-passfile" 
This checks if the active libpq version (9.6 and later) has the
"passfile" option, and returns 0 if present, 1 if not.
`
 2017-12-11 20:09:48 +09:00
Ian Barwick
3a8ee126f3 Delete any replication slots copied by pg_rewind 
If --force-rewind is used in conjunction with "repmgr node rejoin",
any replication slots present on the source node will be copied too;
it's essential to remove these to prevent stale slots being extant
when the node starts up.

We do this at file system level *before* the server starts to minimize
the risk of any problems.

Addresses GitHub #334
 2017-11-24 11:13:31 +09:00
Ian Barwick
81beec54aa repmgr: fix return code output for repmgr node check --action=... 
Addresses GitHub #340
 2017-11-23 10:34:21 +09:00
Ian Barwick
9165d27f9f "repmgr node ...": fixes for 9.3 
Mainly to account for the lack of replication slots.
 2017-11-16 11:25:16 +09:00
Ian Barwick
d9db4f6c45 repmgr node rejoin: add --dry-run option 2017-10-25 11:01:58 +09:00
Ian Barwick
37bdad290c Add --help output for "repmgr node service" 
Addresses GitHub #329.
 2017-10-20 16:44:44 +09:00
Ian Barwick
8911434da5 Add --help output for "repmgr node rejoin" 
Addresses GitHub #329.
 2017-10-20 16:31:17 +09:00
Ian Barwick
61f01f8305 node rewind: add check for pg_rewind and --dry-run mode 
Addresses GitHub #330
 2017-10-20 14:15:23 +09:00
Ian Barwick
20224d1296 Prevent compiler truncation warnings 2017-09-19 16:24:01 +09:00
Ian Barwick
e64600d3e3 Prevent compiler truncation warnings 2017-09-19 16:15:47 +09:00
Ian Barwick
e3defc507e Merge branch 'pg93' 2017-09-18 15:55:32 +09:00
Ian Barwick
30b11c08e6 Disable any configuration settings not compatible with PostgreSQL 9.3 
And emit a warning while we're at it.
 2017-09-18 13:12:38 +09:00
Ian Barwick
68f4a37ca4 Update README 2017-09-14 08:57:16 +09:00
Ian Barwick
a9f4a027a7 pgindent run 2017-09-11 11:14:13 +09:00
Ian Barwick
64ec85bb10 Clarify _do_node_archive_config() usage 2017-09-11 11:00:13 +09:00
Ian Barwick
e4f7dc8234 Add copyright notices 2017-09-08 13:27:39 +09:00
Ian Barwick
edee80cc37 Rename option "node check --is-shutdown" to "--is-shutdown-cleanly" 
As that's what we really want to know. Also return "UNCLEAN_SHUTDOWN"
if that's the case, rather than "RUNNING" which is confusing, even
though it's a command for internal use.
 2017-09-07 11:15:27 +09:00
Ian Barwick
5b5b456ecb "standby switchover": improve logging 
Also no need to disconnect/reconnect from/to local node while it promotes.
 2017-09-05 10:26:27 +09:00
Ian Barwick
edb74ccef9 Various fixes to "repmgr node rejoin" 2017-09-01 11:30:31 +09:00
Ian Barwick
ac64526bd3 Finalize "repmgr node --help" output 2017-08-17 14:25:43 +09:00
Ian Barwick
9ac5c48cc5 Add --help output for "repmgr node check" 2017-08-17 14:12:40 +09:00
Ian Barwick
5127b9253b "repmgr node check": improve Nagios output 2017-08-17 13:54:48 +09:00
Ian Barwick
b1ba476241 Rename "archiver" check etc. to "archive-ready" 
Gives a better indication of what's being checked.
 2017-08-17 12:23:56 +09:00
Ian Barwick
b1b5870d54 "repmgr node status": add --help output, fix CSV output 
Also ensure is executed only on local node, as it needs to read
the data directory.
 2017-08-17 11:27:31 +09:00
Ian Barwick
0ac16f7630 Add more --help output 2017-08-16 17:49:46 +09:00
Ian Barwick
4efc8fb9ce Add placeholder functions for "repmgr $command --help" 
There are now too many options to sensibly fit into general --help
output; we'll add separate output for each repmgr command, e.g.
"repmgr node --help".
 2017-08-16 13:24:14 +09:00
Ian Barwick
4c0d719cdb Add replication slot check to "repmgr node check" 2017-08-16 11:17:02 +09:00
Ian Barwick
3e9ce6fe38 Fix "repmgr node check --role" output 2017-08-15 22:07:07 +09:00
Ian Barwick
554673e83e Add "repmgr node check --downstream" 2017-08-15 15:50:46 +09:00
Ian Barwick
10ef30096c "node check": add server role check 2017-08-14 22:57:09 +09:00
Ian Barwick
fa7d60cd51 "node check": initial general output 2017-08-14 17:32:44 +09:00
Ian Barwick
3b2158edbf Initialise variables, where appropriate 2017-08-14 15:11:42 +09:00
Ian Barwick
eabd56f3be "standby follow": check node system identifiers match 2017-08-14 11:45:08 +09:00
Ian Barwick
0f31756733 General code cleanup 2017-08-14 10:04:53 +09:00
Ian Barwick
50b82f785e Add function to execute "IDENTIFY_SYSTEM" 2017-08-11 22:01:02 +09:00
Ian Barwick
f972aec198 Parse recovery.conf file 
This will be useful for various kinds of diagnostics.
 2017-08-10 23:58:16 +09:00
Ian Barwick
8a50a72dc5 Additional "node status" output 2017-08-10 17:18:08 +09:00
Ian Barwick
a57fb5b50c After switchover, enable sibling standbys to follow new primary 2017-08-10 00:06:16 +09:00
Ian Barwick
4930c95ef7 Consolidate final output of "standby follow" / "node rejoin" 2017-08-09 19:31:42 +09:00
Ian Barwick
bae82318f1 No need to expose configuration file archive functions as repmgr commands 2017-08-09 13:32:15 +09:00
Ian Barwick
df425a38b7 Refactor "standby follow" functionality 
"standby follow" was originally co-opted to start up a demoted node;
this functionality is now delegated to "node rejoin", with the core
functionality of "standby follow" implemented as an internal function.
 2017-08-09 13:26:27 +09:00
Ian Barwick
b1e544f962 Enable use of pg_rewind during switchover operations 
But only if required and --force-rewind required, and pg_rewind
can actually be used.
 2017-08-09 12:09:37 +09:00
Ian Barwick
f2cf46bba3 Check replication lag before attempting switchover 2017-08-08 10:16:47 +09:00
Ian Barwick
2499b42ef8 switchover: check for pending archive files on the demotion candidate 
If the current primary (demotion candidate) still has any files to archive,
it will delay the shutdown until all files are archived. If there is a
substantial number of files, and/or the archive command executes slowly,
this will probably lead to an unwelcome delay in the switchover process.
 2017-08-08 00:37:20 +09:00