Hi,
Postgresql13.4 on RHEL8.4 , this server setup publication as logical replication source (an open source tool named Debezium replicate data from this Postgres database as source ), we found systemctl stop postgresql-13 hang there long time , and use pg_ctl stop
$ pg_ctl stop
waiting for server to shut down............................................................... failed
pg_ctl: server does not shut down
manually kill walsender , try gain pg_ctl stop it soon got stopped.
postgres 3291450 3287667 84 08:45 ? 00:05:42 postgres: walsender splex_deny xx.xxx.xxx.xxx(32958) idle
looks like walsender blocking PG shutdown forever. From pglogs
2022-06-23 07:45:20.107 UTC::@:[179416]:[6206-1]::2022-05-16 01:34:02 UTCLOG: received fast shutdown request
2022-06-23 07:45:20.107 UTC::@:[179416]:[6207-1]::2022-05-16 01:34:02 UTCLOG: aborting any active transactions
...
2022-06-23 07:45:20.133 UTC::@:[179416]:[6209-1]::2022-05-16 01:34:02 UTCLOG: background worker "logical replication launcher" (PID 179429) exited with exit code 1
Thanks,
James
Kindly avoid killing manually unless it's killed using signal 15(-TERM).
Talking about walsender, I am quite skeptical about its relation with WAL sender. Indeed, killing WAL sender would have perhaps resolved the issue; however, this does not establish WAL sender as a culprit.
Only strace/gdb may surely say who is the actual culprit.
Additionally, rather using pg_ctl stop prefer pg_ctl stop -mf.
Thanks,
Ninad
On Thu, Jun 23, 2022 at 3:42 PM James Pang (chaolpan) <chaolpan@xxxxxxxxx> wrote:
