Jeff Janes <jeff(dot)janes(at)gmail(dot)com> writes:
> I was not using -l. Instead I set logging_collector=on in postgresql.conf,
> but I suppose that that is not sufficent?
No, because initial stderr is still connected to whatever.
> But I just retried with -l, and it still gets the fast shutdown.
Hmph. Doesn't work that way for me on RHEL6, which surely oughta
behave the same as your CentOS.
regards, tom lane