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I have PostgreSQL 9.4 streaming replication setup between three nodes (master and two hot standbys). I use repmgr to control the replication cluster. I need to retire one of the standbys and remove it from the replication set. I'd like to keep the data on that standby. I use replication slots.

My question is: what is the preferred way of removing a standby node from the replication set? There is a standby unregister command in repmgr but it will only remove the node from repmgr's catalog and won't touch the actual replication setup.

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