shutdown_clients ignored on Director upgrade/restart
1 Sep
2020
1 Sep
'20
12:24 p.m.
When yum updates a Dovecot Director, it restarts all processes - however a few imap-login and pop3-login processes hang because they are still proxying connections.
It's like the now orphaned processes are stalled, and needs a kill -9 to die.
This is a problem because those stalled connections are still connected to backends, so when new connections are made from the same account, they do not end up on the same backend and thus index corruption happens (same account, two different backends).
shutdown_clients is enabled but it appears Dovecot restarts regardless of verifying all processes/clients are shut down.
Just had this happen upon yum update from dovecot-2.3.11.3-3 to dovecot-2.3.11.3-4
-- Tom
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Tom Sommer