Ignacio Colmenero <ignacio.colmenero@abracontrols.com> writes:
> Yesterday, the database server was rebooted and database wasn't shut
> down properly.
> When it went back online, the following messages showed up:
> 2014-03-13 08:46:08 UTC LOG: 08006: test message did not get through
> on socket for statistics collector
The only known reason for that to happen is kernel packet filtering rules
that prevent passing traffic through the stats-collector socket. It seems
very unlikely that this "just happened" without somebody/something outside
Postgres actively breaking it. I'd take a close look at recent system
configuration changes, particularly in the firewall area. It wouldn't
hurt to know exactly *why* the system was rebooted, too.
regards, tom lane
