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repmgrd: check shared library is loaded

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If this isn't the case, "repmgrd" will appear to run but not handle
failover correctly.

Address GitHub #337.
This commit is contained in:
Ian Barwick
2017-11-10 14:35:17 +09:00
parent 0230bafae1
commit aa089820ab
4 changed files with 40 additions and 2 deletions
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18
repmgrd.c
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@@ -332,6 +332,24 @@ main(int argc, char **argv)
repmgrd_set_local_node_id(local_conn, config_file_options.node_id);
{
/*
* sanity-check that the shared library is loaded and shared memory
* can be written by attempting to retrieve the previously stored node_id
*/
int stored_local_node_id = UNKNOWN_NODE_ID;
stored_local_node_id = repmgrd_get_local_node_id(local_conn);
if (stored_local_node_id == UNKNOWN_NODE_ID)
{
log_error(_("unable to write to shared memory"));
log_hint(_("ensure \"shared_preload_libraries\" includes \"repmgr\""));
PQfinish(local_conn);
terminate(ERR_BAD_CONFIG);
}
}
if (config_file_options.replication_type == REPLICATION_TYPE_BDR)
{
log_debug("node id is %i", local_node_info.node_id);