Yi Sun <yinan81@xxxxxxxxx> writes: > Besides command run(like pg_ctl) can cause "received immediate shutdown > request" any other reason can cause this please? That message indicates that something sent the postmaster process a SIGQUIT signal (which is all that "pg_ctl stop -m immediate" does). There's no speculation to that: a look at postmaster.c will convince you that there is no other way to reach that message. So you need to be looking for things that would be sending SIGQUIT unexpectedly. I don't know much about Patroni, but maybe something in that environment thinks that SIGQUIT'ing random processes is a good thing to do. regards, tom lane
