Merge branch 'develop' into MAX-324

server/modules/protocol/mysql_common.c

@@ -220,6 +220,23 @@ int gw_read_backend_handshake(
                                         "from backend. Error code: %d, Msg : %s",
                                         errcode,
                                         bufstr)));
+
+				/**
+				 * If ER_HOST_IS_BLOCKED is found
+				 * the related server is put in maintenace mode
+				 * This will avoid filling the error log.
+				 */
+
+				if (errcode == 1129) {
+					LOGIF(LE, (skygw_log_write_flush(
+						LOGFILE_ERROR,
+						"Server %s has been put into maintenance mode due to the server blocking connections from MaxScale. Run 'mysqladmin -h %s -P %d flush-hosts' on this server before taking this server out of maintenance mode.",
+						dcb->server->unique_name,
+						dcb->server->name,
+						dcb->server->port)));
+
+					server_set_status(dcb->server, SERVER_MAINT);
+				}
                                 
                                 free(bufstr);
                         }