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Regularly sync witness server repl_nodes table.

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Although the witness server will resync the repl_nodes table following
a failover, other operations (e.g. removing or cloning a standby)
were previously not reflected in the witness server's copy of this
table.

As a short-term workaround, automatically resync the table at regular
intervals (defined by the configuration file parameter
"witness_repl_nodes_sync_interval_secs", default 30 seconds).
This commit is contained in:
Ian Barwick
2016-03-29 16:46:18 +09:00
parent 958e45f2b8
commit c48c248c15
7 changed files with 54 additions and 16 deletions
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5
config.c
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@@ -235,6 +235,9 @@ parse_config(t_configuration_options *options)
options->monitor_interval_secs = 2;
options->retry_promote_interval_secs = 300;
/* default to resyncing repl_nodes table every 30 seconds on the witness server */
options->witness_repl_nodes_sync_interval_secs = 30;
memset(options->event_notification_command, 0, sizeof(options->event_notification_command));
options->tablespace_mapping.head = NULL;
@@ -358,6 +361,8 @@ parse_config(t_configuration_options *options)
options->monitor_interval_secs = repmgr_atoi(value, "monitor_interval_secs", &config_errors, false);
else if (strcmp(name, "retry_promote_interval_secs") == 0)
options->retry_promote_interval_secs = repmgr_atoi(value, "retry_promote_interval_secs", &config_errors, false);
else if (strcmp(name, "witness_repl_nodes_sync_interval_secs") == 0)
options->witness_repl_nodes_sync_interval_secs = repmgr_atoi(value, "witness_repl_nodes_sync_interval_secs", &config_errors, false);
else if (strcmp(name, "use_replication_slots") == 0)
/* XXX we should have a dedicated boolean argument format */
options->use_replication_slots = repmgr_atoi(value, "use_replication_slots", &config_errors, false);