Yes, it's a VPS running FreeBSD 6.1, so presumably it's in a FreeBSD jail. I'll verify that with my hosting provider and probably follow up along these lines.
http://www.postgresql.org/docs/8.1/interactive/kernel-resources.html seems to recommend running as different uid's as well. Right now it's running as pgsql, UID 70, which I'm sure is the default. Thanks,
Wes Sheldahl
On 10/21/06, Marc G. Fournier <scrappy@hub.org> wrote: -----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Are you running this in a FreeBSD jail under 6.1? It sounds like the problem
that I had where a second postmaster starts up and stomp's on the previous
postgresql's shared memory ...
To "fix", you have to make sure that both instances run as different UIDs, so
that one can't stomp on the other ...
- --On Friday, October 20, 2006 17:05:53 -0400 Wes Sheldahl
< wes.sheldahl@gmail.com> wrote:
> Hi,
>
> I seem to have an unstable/unreliable installation of postgresql, and I'm not
> sure how to troubleshoot it.
>
> Symptoms:
> $ psql postgres
> psql: FATAL: semctl(851974, 3, SETVAL, 0) failed: Invalid argument
>
> (restart postgresql)
> $ psql postgres
> Welcome to psql 8.1.4, the PostgreSQL interactive terminal.
> (rest of welcome message and psql prompt)
>
> It will work fine for a while, but later it will stop accepting connections
> with the above error, until I restart postgresql again. It also happens when
> I call a ruby script that connects to postgres: fails with same error message
> sometimes, but works after restarting postgresql.
>
> Versions/Environment:
> Postgresql 8.1.4 (installed from ports on FreeBSD 6.1)
>
> I've already tried reinstalling the postgresql81-server and
> postgresql81-client ports and their dependencies via portupgrade, but the
> symptoms persist. What else should I try?
>
> --
> Wes Sheldahl
> wes.sheldahl@gmail.com
- ----
Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email . scrappy@hub.org MSN . scrappy@hub.org
Yahoo . yscrappy Skype: hub.org ICQ . 7615664
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--
Wes Sheldahl
Sheldahl Consulting LLC
http://www.sheldahlconsulting.comPhone: 859-338-3349
Fax: 866-387-4484
wes@sheldahlconsulting.com