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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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4
sysutils.h
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@@ -25,4 +25,8 @@ extern bool local_command_simple(const char *command, PQExpBufferData *outputbuf
extern bool remote_command(const char *host, const char *user, const char *command, const char *ssh_options, PQExpBufferData *outputbuf);
extern pid_t disable_wal_receiver(PGconn *conn);
extern pid_t enable_wal_receiver(PGconn *conn);
#endif /* _SYSUTILS_H_ */