Jeff Janes <jeff(dot)janes(at)gmail(dot)com> writes:
> On Tue, Sep 26, 2017 at 1:10 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> Really? The server should have detached itself from your terminal
>> group long before that. What platform is this?
> CentOS release 6.9 (Final)
Hm, same as here. Are you perhaps not using pg_ctl's -l option?
If not, the postmaster's stderr would remain attached to your tty,
which might be the reason why a terminal ^C affects it.
regards, tom lane