repmgr witness unregister repmgr witness unregister repmgr witness unregister remove a witness node's information to the &repmgr; metadata repmgr witness unregister removes a witness server's node record from the &repmgr; metadata. The node does not have to be running to be unregistered, however if this is the case then connection information for the primary server must be provided. Execute with the --dry-run option to check what would happen without actually registering the witness server. Unregistering a running witness node: $ repmgr -f /etc/repmgr.conf witness unregister INFO: connecting to witness node "node3" (ID: 3) INFO: unregistering witness node 3 INFO: witness unregistration complete DETAIL: witness node with id 3 (conninfo: host=node3 dbname=repmgr user=repmgr port=5499) successfully unregistered Unregistering a non-running witness node: $ repmgr -f /etc/repmgr.conf witness unregister -h node1 -p 5501 -F INFO: connecting to witness node "node3" (ID: 3) NOTICE: unable to connect to witness node "node3" (ID: 3), removing node record on cluster primary only INFO: unregistering witness node 3 INFO: witness unregistration complete DETAIL: witness node with id 3 (conninfo: host=node3 dbname=repmgr user=repmgr port=5499) successfully unregistered This command will not make any changes to the witness node itself and will neither remove any data from the witness database nor stop the PostgreSQL instance. A witness node which has been unregistered, can be re-registered with repmgr witness register --force.