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repmgrd: handle failover with two nodes in the primary location

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If two nodes were in the primary location, and at least one node in
another location, the non-failed node in the primary location was not
recognising itself as a promotion candidate.

Addresses GitHub #407.
This commit is contained in:
Ian Barwick
2018-03-30 12:02:34 +09:00
parent 50321bb95d
commit 5e4bdb5a1b
2 changed files with 10 additions and 0 deletions
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2
HISTORY
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@@ -4,6 +4,8 @@
repmgr: poll demoted primary after restart as a standby during a repmgr: poll demoted primary after restart as a standby during a
switchover operation; GitHub #408 (Ian) switchover operation; GitHub #408 (Ian)
repmgrd: fix memory leaks in witness code (AndrzejNowicki, Martín) repmgrd: fix memory leaks in witness code (AndrzejNowicki, Martín)
repmgrd: handle failover situation with only two nodes in the primary
location, and at least one node in another location; GitHub #407 (Ian)
repmgrd: set "connect_timeout=2" when pinging a server (Ian) repmgrd: set "connect_timeout=2" when pinging a server (Ian)
4.0.4 2018-03-09 4.0.4 2018-03-09

8
repmgrd-physical.c
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@@ -2554,6 +2554,14 @@ do_election(void)
return ELECTION_NOT_CANDIDATE; return ELECTION_NOT_CANDIDATE;
} }
} }
else
{
/* standby nodes found - check if we're in the primary location befor checking theirs */
if (strncmp(upstream_node_info.location, local_node_info.location, MAXLEN) == 0)
{
primary_location_seen = true;
}
}
/* get our lsn */ /* get our lsn */
local_node_info.last_wal_receive_lsn = get_last_wal_receive_location(local_conn); local_node_info.last_wal_receive_lsn = get_last_wal_receive_location(local_conn);