This makes keeping track of events such as failovers
much easier. Note that this is for convenience and is
not a foolproof auditing log.
Sample output:
repmgr_db=# SELECT * from repmgr_test.repl_events ;
node_id | event | successful | event_timestamp | details
---------+--------------------------+------------+-------------------------------+----------------------------------------------------------
1 | master_register | t | 2015-03-06 14:14:08.196636+09 |
2 | standby_clone | t | 2015-03-06 14:14:17.660768+09 | Backup method: pg_basebackup; --force: N
2 | standby_register | t | 2015-03-06 14:14:18.762222+09 |
4 | witness_create | t | 2015-03-06 14:14:22.072815+09 |
3 | standby_clone | t | 2015-03-06 14:14:23.524673+09 | Backup method: pg_basebackup; --force: N
3 | standby_register | t | 2015-03-06 14:14:24.620161+09 |
2 | repmgrd_start | t | 2015-03-06 14:14:29.639096+09 |
3 | repmgrd_start | t | 2015-03-06 14:14:29.641489+09 |
4 | repmgrd_start | t | 2015-03-06 14:14:29.648002+09 |
2 | standby_promote | t | 2015-03-06 14:15:01.956737+09 | Node 2 was successfully be promoted to master
2 | repmgrd_failover_promote | t | 2015-03-06 14:15:01.964771+09 | Node 2 promoted to master; old master 1 marked as failed
3 | repmgrd_failover_follow | t | 2015-03-06 14:15:07.228493+09 | Node 3 now following new upstream node 2
(12 rows)
Per e.g. this complaint:
https://groups.google.com/d/msg/repmgr/a-SMIQFGDBs/rgRH3p4ZPgYJ
Before:
$ repmgr -f /etc/postgres/repmgr.conf cluster status
repmgr: Replicator manager
Try "repmgr --help" for more information.
after:
$ repmgr -f /etc/postgres/repmgr.conf cluster status
repmgr: Replication manager
[ERROR] Unknown server command 'status'
Try "repmgr --help" for more information.
This involves mainly abstracting the functions which copy
and create records from repmgr.c to dbutils.c, as they need
to be shared between repmgr and repmgrd.
Per issue noted here:
https://groups.google.com/forum/#!topic/repmgr/v5nu1Xwf6X0
This makes it practical to take a back with rsync where tablespaces
require remapping. It also makes tablespace remapping possible for
9.3, where pg_basebackup does not support this option.
Sometimes it's desirable to re-sync a "stale" data directory
on a standby, rather than start from scratch with pg_basebackup().
This re-adds the rsync code from the 2.x series, with some
modifications.
TODO: tablespace support.
If the user don't put that option in rsync_options using of "--force"
could be unsafe.
While the probability of failures because of this are low they aren't
zero.
"pg_basebackup_options"
Enable custom options to be passed to pg_basebackup
(e.g. --max-rate, --checkpoint, --xlogdir)
"tablespace_mapping"
Analogue to pg_basebackup's (9.4 and later) -T/--tablespace-mapping
option.
Tablespace mapping could also be passed via "pg_basebackup_options",
however by providing a separate parameter it makes the configuration
file easier to read and allows us to verify the specified tablespaces
exist (pg_basebackup won't do this, which can lead to undesired
behaviour, i.e. attempting to create the tablespace in the original
path).
