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When performing a follow operation, start/restart server as appropriate

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Before this we were always forcing a restart, which is technically not
a problem but produces some potentially confusing log entries along the
lines:

  pg_ctl: PID file "/path/to/postmaster.pid" does not exist
  Is server running?
  starting server anyway
This commit is contained in:
Ian Barwick
2017-08-25 16:48:41 +09:00
parent 1ba2a2462c
commit dc172cae20
1 changed files with 30 additions and 13 deletions
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43
repmgr-action-standby.c
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@@ -1390,7 +1390,6 @@ do_standby_follow_internal(PGconn *primary_conn, t_node_info *primary_node_recor
{
t_node_info local_node_record = T_NODE_INFO_INITIALIZER;
int original_upstream_node_id = UNKNOWN_NODE_ID;
char restart_command[MAXLEN] = "";
int r;
RecordStatus record_status = RECORD_NOT_FOUND;
@@ -1494,22 +1493,40 @@ do_standby_follow_internal(PGconn *primary_conn, t_node_info *primary_node_recor
exit(ERR_BAD_CONFIG);
}
/* restart the service */
/* start/restart the service */
// XXX here check if service is running!! if not, start
// ensure that problem with pg_ctl output is caught here
get_server_action(ACTION_RESTART, restart_command, config_file_options.data_directory);
log_notice(_("restarting server using \"%s\""),
restart_command);
r = system(restart_command);
if (r != 0)
{
log_error(_("unable to restart server"));
PQfinish(primary_conn);
exit(ERR_NO_RESTART);
char server_command[MAXLEN] = "";
bool server_up = is_server_available(config_file_options.conninfo);
char *action = NULL;
log_debug("XXX %s\n", config_file_options.conninfo);
if (server_up == true)
{
action = "restart";
get_server_action(ACTION_RESTART, server_command, config_file_options.data_directory);
}
else
{
action = "start";
get_server_action(ACTION_START, server_command, config_file_options.data_directory);
}
/* if translation needed, generate messages in the preceding if/else */
log_notice(_("%sing server using \"%s\""),
action,
server_command);
r = system(server_command);
if (r != 0)
{
log_error(_("unable to %s server"), action);
PQfinish(primary_conn);
exit(ERR_NO_RESTART);
}
}
@@ -2381,7 +2398,7 @@ do_standby_switchover(void)
* new standby
*/
if (runtime_options.siblings_follow == true)
if (runtime_options.siblings_follow == true && sibling_nodes.node_count > 0)
{
int failed_follow_count = 0;
char host[MAXLEN] = "";