Fix bug in read_only_action()

lib/MySQL_HostGroups_Manager.cpp

@@ -1052,7 +1052,7 @@ SQLite3_result * MySQL_HostGroups_Manager::SQL3_Connection_Pool() {
 
 void MySQL_HostGroups_Manager::read_only_action(char *hostname, int port, int read_only) {
 	// define queries
-	const char *Q1=(char *)"SELECT hostgroup_id FROM mysql_servers join mysql_replication_hostgroups ON hostgroup_id=writer_hostgroup WHERE hostname='%s' AND port=%d AND status=0";
+	const char *Q1=(char *)"SELECT hostgroup_id FROM mysql_servers join mysql_replication_hostgroups ON hostgroup_id=writer_hostgroup WHERE hostname='%s' AND port=%d AND status='ONLINE'";
 	const char *Q2=(char *)"UPDATE OR IGNORE mysql_servers SET hostgroup_id=(SELECT writer_hostgroup FROM mysql_replication_hostgroups WHERE reader_hostgroup=mysql_servers.hostgroup_id) WHERE hostname='%s' AND port=%d AND hostgroup_id IN (SELECT reader_hostgroup FROM mysql_replication_hostgroups WHERE reader_hostgroup=mysql_servers.hostgroup_id)";
 	const char *Q3A=(char *)"INSERT OR IGNORE INTO mysql_servers(hostgroup_id, hostname, port, status, weight, max_connections, max_replication_lag, use_ssl, max_latency_ms) SELECT reader_hostgroup, hostname, port, status, weight, max_connections, max_replication_lag, use_ssl, max_latency_ms FROM mysql_servers JOIN mysql_replication_hostgroups ON mysql_servers.hostgroup_id=mysql_replication_hostgroups.writer_hostgroup WHERE hostname='%s' AND port=%d";
 	const char *Q3B=(char *)"DELETE FROM mysql_servers WHERE hostname='%s' AND port=%d AND hostgroup_id IN (SELECT reader_hostgroup FROM mysql_replication_hostgroups WHERE reader_hostgroup=mysql_servers.hostgroup_id)";