This is a tracking task to monitor replication problems in the WMF infrastructure, such as:
- Replication broken or stopped to any server
- Data or schema differences between a master and some or all of its slaves
- Constant or intermittent replication lag degrading the service
This tasks are normally handled by DBA team (part of SRE), requiring many times assistance from Performance-Team, Analytics, Cloud-Services, and the many Product teams.
NOTE: If the problem you are experiencing is about Wiki Replica databases in Cloud-Services (*.{analytics,web}.db.svc.eqiad.wmflabs, *.labsdb), use the Data-Services tag instead; Wiki Replica hosts have their own set of issues including sanitization and multiple user account handling, so even if it is a replica service, the issue may not be replication itself.