SHOW Statements servers is removed. If any server IDs have been set in this way, a comma-delimited list of one or more numbers is shown. If no server IDs have been set, the field is blank. The  Ignored_server_ids  value in the  slave_master_info  table also shows the server IDs to be ignored, but as a space-delimited list, preceded by the total number of server IDs to be ignored. For example, if a  CHANGE REPLICATION SOURCE TO  |  CHANGE MASTER TO  statement containing the IGNORE_SERVER_IDS = (2,6,9)  option has been issued to tell a replica to ignore sources having the server ID 2, 6, or 9, that information appears as shown here: Note  Replicate_Ignore_Server_Ids: 2, 6, 9  Ignored_server_ids: 3, 2, 6, 9 Replicate_Ignore_Server_Ids  filtering is performed by the I/O thread, rather than by the SQL thread, which means that events which are filtered out are not written to the relay log. This differs from the filtering actions taken by server options such  --replicate-do-table , which apply to the SQL thread. From MySQL 8.0, a deprecation warning is issued if  SET GTID_MODE=ON  is issued when any channel has existing server IDs set with  IGNORE_SERVER_IDS . Before starting GTID-based replication, use  SHOW REPLICA | SLAVE STATUS to check for and clear all ignored server ID lists on the servers involved. You can clear a list by issuing a  CHANGE REPLICATION SOURCE TO  |  CHANGE MASTER TO  statement containing the  IGNORE_SERVER_IDS  option with an empty list. Note • Source_Server_Id • Source_UUID • Source_Info_File • SQL_Delay • SQL_Remaining_Delay The  server_id  value from the source. The  server_uuid  value from the source. The location of the  master.info  file, the use of which is now deprecated. By default from MySQL 8.0, a table is used instead for the replica’s connection metadata repository. The number of seconds that the replica must lag the source. When  Replica_SQL_Running_State  is  Waiting until MASTER_DELAY seconds after source executed event , this field contains the number of delay seconds remaining. At other times, this field is  NULL . 2955