Steps to reproduce:
- Install postgresql 13 primary and standby instance ,add them with agent2 template
- Navigate to items of standby host
- Change filter to not supported
- You will see Template DB PostgreSQL Agent 2: Replication: Lag in bytes not supported because received_lsn column changed to written_lsn in postgresql 13.
- Also there is problem with item Template DB PostgreSQL Agent 2: PostgreSQL: Get bgwriter: Checkpoint: Checkpoint sync time. in json sync_time called checkpoint_sync_time. But it can be channed in template, just updating you..
Replication lag work with postgres 13