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repmgrd: optionally disconnect WAL receivers during failover

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This is intended to ensure that all nodes have a constant LSN while
making the failover decision.

This feature is experimental and needs to be explicitly enabled with the
configuration file option "standby_disconnect_on_failover".

Note enabling this option will result in a delay in the failover decision
until the WAL receiver is disconnected on all nodes.
This commit is contained in:
Ian Barwick
2019-03-01 18:20:44 +09:00
committed by Ian Barwick
parent dd04ebb809
commit 1615353f48
16 changed files with 404 additions and 17 deletions
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2
repmgr.h
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@@ -92,6 +92,8 @@
#define DEFAULT_NODE_REJOIN_TIMEOUT 60 /* seconds */
#define DEFAULT_WAL_RECEIVE_CHECK_TIMEOUT 30 /* seconds */
#define WALRECEIVER_DISABLE_TIMEOUT_VALUE 86400000 /* milliseconds */
#ifndef RECOVERY_COMMAND_FILE
#define RECOVERY_COMMAND_FILE "recovery.conf"
#endif