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"standby follow": check node system identifiers match

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This commit is contained in:
Ian Barwick
2017-08-14 11:45:08 +09:00
parent 0f31756733
commit eabd56f3be
9 changed files with 114 additions and 37 deletions
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60
repmgr-action-standby.c
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@@ -1247,8 +1247,12 @@ do_standby_follow(void)
PQExpBufferData follow_output;
bool success;
log_verbose(LOG_DEBUG, "do_standby_follow()");
uint64 local_system_identifier = UNKNOWN_SYSTEM_IDENTIFIER;
t_conninfo_param_list repl_conninfo;
PGconn *repl_conn = NULL;
t_system_identification primary_identification = T_SYSTEM_IDENTIFICATION_INITIALIZER;
log_verbose(LOG_DEBUG, "do_standby_follow()");
local_conn = establish_db_connection(config_file_options.conninfo, true);
@@ -1263,7 +1267,7 @@ do_standby_follow(void)
* If --wait provided, loop for up `primary_response_timeout`
* seconds before giving up
*/
// XXX ??? primary_follow_timeout
for (timer = 0; timer < config_file_options.primary_follow_timeout; timer++)
{
primary_conn = get_primary_connection_quiet(local_conn,
@@ -1275,20 +1279,60 @@ do_standby_follow(void)
break;
}
}
PQfinish(local_conn);
if (PQstatus(primary_conn) != CONNECTION_OK)
{
log_error(_("unable to determine primary node"));
PQfinish(local_conn);
exit(ERR_BAD_CONFIG);
}
check_primary_standby_version_match(local_conn, primary_conn);
PQfinish(local_conn);
get_node_record(primary_conn, primary_id, &primary_node_record);
/* check replication connection */
initialize_conninfo_params(&repl_conninfo, false);
conn_to_param_list(primary_conn, &repl_conninfo);
param_set(&repl_conninfo, "replication", "1");
param_set(&repl_conninfo, "user", primary_node_record.repluser);
repl_conn = establish_db_connection_by_params(&repl_conninfo, false);
if (PQstatus(repl_conn) != CONNECTION_OK)
{
log_error(_("unable to establish a replication connection to the primary node"));
PQfinish(primary_conn);
exit(ERR_BAD_CONFIG);
}
/* check system_identifiers match */
local_system_identifier = get_system_identifier(config_file_options.data_directory);
success = identify_system(repl_conn, &primary_identification);
if (success == false)
{
log_error(_("unable to query the primary node's system identification"));
PQfinish(primary_conn);
PQfinish(repl_conn);
exit(ERR_BAD_CONFIG);
}
if (primary_identification.system_identifier != local_system_identifier)
{
log_error(_("this node is not part of the primary node's replication cluster"));
log_detail(_("this node's system identifier is %lu, primary node's system identifier is %lu"),
local_system_identifier,
primary_identification.system_identifier);
PQfinish(primary_conn);
PQfinish(repl_conn);
exit(ERR_BAD_CONFIG);
}
PQfinish(repl_conn);
free_conninfo_params(&repl_conninfo);
initPQExpBuffer(&follow_output);
success = do_standby_follow_internal(
@@ -1425,6 +1469,8 @@ do_standby_follow_internal(PGconn *primary_conn, t_node_info *primary_node_recor
{
original_upstream_node_id = primary_node_record->node_id;
}
free_conninfo_params(&local_node_conninfo);
}
log_info(_("changing node %i's primary to node %i"),