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Author SHA1 Message Date
Ian Barwick
6f0f338968 standby follow: set replication user when connecting to local node 2019-03-21 16:43:39 +09:00
Ian Barwick
bd26eb3025 standby switchover: don't attempt to pause repmgrd on unreachable nodes 2019-03-21 13:48:59 +09:00
Ian Barwick
9b089b7401 doc: add note about compiling against Pg11 and later with the --with-llvm option 2019-03-21 10:30:00 +09:00
Ian Barwick
314a1e8f4f use a constant to denote unknown replication lag 2019-03-20 17:26:04 +09:00
Ian Barwick
7204a0faf4 doc: consolidate witness server documentation 2019-03-20 16:31:52 +09:00
Ian Barwick
5e775cef16 doc: various improvements to repmgrd documentation 2019-03-20 16:10:03 +09:00
Ian Barwick
7d0caefaee Fix logging related to "connection_check_type" 
Also log the selected type at repmgrd startup.
 2019-03-20 11:58:18 +09:00
Ian Barwick
7434cc0b8e repmgrd: improve witness node monitoring 
Mainly fix a couple of places where "standby" was hard-coded into a log
message which can apply either to a witness or a standby.
 2019-03-20 11:47:36 +09:00
Ian Barwick
b84d98fe81 Explictly log PQping() failures 2019-03-20 11:47:32 +09:00
Ian Barwick
46efe57cd0 Improve database connection failure logging 
Log the output of PQerrorStatus() in a couple of places where it was missing.

Additionally, always log the output of PQerrorStatus() starting with a blank
line, otherwise the first line looks like it was emitted by repmgr, and
it's harder to scan the error message.

Before:

    [2019-03-20 11:24:15] [DETAIL] could not connect to server: Connection refused
            Is the server running on host "localhost" (::1) and accepting
            TCP/IP connections on port 5501?
    could not connect to server: Connection refused
            Is the server running on host "localhost" (127.0.0.1) and accepting
            TCP/IP connections on port 5501?

After:

    [2019-03-20 11:27:21] [DETAIL]
    could not connect to server: Connection refused
            Is the server running on host "localhost" (::1) and accepting
            TCP/IP connections on port 5501?
    could not connect to server: Connection refused
            Is the server running on host "localhost" (127.0.0.1) and accepting
            TCP/IP connections on port 5501?
 2019-03-20 11:47:28 +09:00
Ian Barwick
426759ca8e check_primary_status(): handle case where recovery type unknown 2019-03-18 16:16:54 +09:00
Ian Barwick
39df55c39c Check node recovery type before attempting to write an event record 
In some corner cases (e.g. immediately after a switchover) where
the current primary has not yet been determined, the provided connection
might not be writeable. This prevents error messages such as
"cannot execute INSERT in a read-only transaction" generating unnecessary
noise in the logs.
 2019-03-18 15:26:16 +09:00
Ian Barwick
f54ff85cfa Remove outdated comment 
This was only relevant for repmgr3 and earlier; in repmgr4 the schema
is hard-coded.
 2019-03-18 15:19:11 +09:00
Ian Barwick
8ab51c2ae3 Refactor check_primary_status() 
Reduce nested if/else branching, and improve documentation.
 2019-03-18 15:01:21 +09:00
Ian Barwick
43f28f4097 Clarify calls to check_primary_status() 
Use a constant rather than a magic number to indicate non-provision
of elapsed degraded monitoring time.
 2019-03-18 14:21:34 +09:00
Ian Barwick
0940185f49 doc: clarify "cluster show" error codes 2019-03-18 10:49:38 +09:00
John Naylor
4f9fc56871 Fix assorted Makefile bugs 
1. The target additional-maintainer-clean was misspelled as
maintainer-additional-clean.

2. Add add missing clean targets, in particular sysutils.o, config.h,
repmgr_version.h, and Makefile.global. While at it, use a wildcard
for obj files.

3. Don't delete configure.

4. Remove generated file doc/version.sgml from the repo.

5. Have maintainer-clean recurse to the doc directory.
 2019-03-15 16:29:31 +09:00
Ian Barwick
fbdf9617fa doc: update repmgrd example output 2019-03-15 15:43:11 +09:00
Ian Barwick
dfb92df05f doc: miscellaenous cleanup 2019-03-15 14:39:37 +09:00
Ian Barwick
9dd87dd5ce doc: add explanation of the configuration file format 2019-03-15 14:02:42 +09:00
Ian Barwick
a2df69512a doc: update "connection_check_type" descriptions 2019-03-14 15:44:59 +09:00
Ian Barwick
c2206b007a repmgrd: optionally check upstream availability through connection attempts 2019-03-14 15:44:53 +09:00
John Naylor
e06d3de444 Correct some doc typos 2019-03-14 11:58:31 +08:00
Ian Barwick
9d056b2f72 doc: expand "standby_disconnect_on_failover" documentation 2019-03-14 12:08:13 +09:00
Ian Barwick
19bf4d7434 Count witness and zero-priority nodes in visibility check 2019-03-14 11:17:51 +09:00
Ian Barwick
56d9f5b856 Ensure witness node sets last upstream seen time 2019-03-14 10:53:47 +09:00
Ian Barwick
c1d6753081 doc: fix option name typo 2019-03-14 09:32:06 +09:00
Ian Barwick
2b59b4894a doc: expand "failover_validate_command" documentation 2019-03-13 21:10:03 +09:00
Ian Barwick
c3c58df7b9 repmgrd: improve logging output when executing "failover_validate_command" 2019-03-13 21:07:26 +09:00
Ian Barwick
0e2f3e563a doc: various updates 2019-03-13 16:55:32 +09:00
Ian Barwick
8c4421d110 doc: merge repmgrd witness server description into failover section 2019-03-13 16:12:17 +09:00
Ian Barwick
69cb3f1e82 doc: merge repmgrd split network handling description into failover section 2019-03-13 16:12:14 +09:00
Ian Barwick
960acfeb3c doc: merge repmgrd monitoring description into operating section 2019-03-13 16:12:11 +09:00
Ian Barwick
a8d50a5b98 doc: merge repmgrd degraded monitoring description into operation section 2019-03-13 16:12:06 +09:00
Ian Barwick
11e5993bf5 doc: merge repmgrd notes into operation documentation 2019-03-13 16:12:03 +09:00
Ian Barwick
09861a5604 doc: merge repmgrd pause documentation into overview 2019-03-13 16:11:59 +09:00
Ian Barwick
89bba77d4d doc: initial repmgrd doc refactoring 2019-03-13 16:11:55 +09:00
Ian Barwick
dd6ece326f doc: update repmgrd configuration documentation 2019-03-13 13:34:08 +09:00
Ian Barwick
573d027db6 repmgrd: various minor logging improvements 2019-03-13 11:27:17 +09:00
Ian Barwick
1afb41647b repmgrd: remove global variable 
Make the "sibling_nodes" local, and pass by reference where relevant.
 2019-03-12 17:12:23 +09:00
Ian Barwick
fc397f25f6 repmgrd: enable election rerun 
If "failover_validation_command" is set, and the command returns an error,
rerun the election.

There is a pause between reruns to avoid "churn"; the length of this pause
is controlled by the configuration parameter "election_rerun_interval".
 2019-03-12 17:12:19 +09:00
Ian Barwick
99923f5ffc Remove redundant struct allocation 2019-03-11 19:06:07 +09:00
Ian Barwick
b9cdcd55e7 doc: update list of reloadable repmgrd configuration options 2019-03-11 16:18:10 +09:00
Ian Barwick
db87ff46fd doc: document "failover_validation_command" 2019-03-11 15:02:33 +09:00
Ian Barwick
2a8f8d8400 doc: expand repmgrd configuration section 2019-03-11 14:50:33 +09:00
Ian Barwick
4ef706c2ca Execute "failover_validation_command" when only one standby exists 2019-03-08 12:19:37 +09:00
Ian Barwick
663c2e75b4 Make "failover_validation_command" reloadable 2019-03-08 09:27:19 +09:00
Ian Barwick
db0d71c6a7 Initial implementation of "failover_validation_command" 2019-03-08 08:49:15 +09:00
Ian Barwick
6f4f56dd8c Make recently added configuration options reloadable 2019-03-07 10:58:25 +09:00
Ian Barwick
33fefd9f52 Add configuration option "primary_visibility_consensus" 
This determines whether repmgrd should continue with a failover if
one or more nodes report they can still see the standby.
 2019-03-07 10:41:42 +09:00