Обсуждение: postgres at reboot
Hi Everybody, About 1.5 month ago, my machine (which runs redhat linux 2.6.9-78.0.1.ELsmp on Dell hardware with postgres 8.3.3) had a terrible crash. I am mostly recovered, but there is at least one more thing that's not right. Namely, when the machine gets rebooted, postgres doesn't start automatically. Before the crash, there was no such problem. I see a file /etc/rc.d/init.d/postgresql. Is this the start-up script? If not, please tell me what would be the correct one (and where would I find one). If it is, can you please tell me where I would find the latest one anyway? (Maybe the latest one got lost and I am looking at an old copy???) The detail of how it happens escapes me, but as near as I can reconstruct in my head, after the reboot I discover that postgres is not running and I issue: pg_ctl start and it complains something to the effect that it is already started (which seems to be not true) and maybe it gives me a pid for the postmaster. I think I tried: pg_ctl stop and it told me something a bit disageeable. But I found a file with that pid in /tmp directory and when I remove that file, then "pg_ctl start" succeeds. If this sounds familiar to you (or you have some clue as to what is going on), I would appreciate a tip. Regards, Tena Sakai tsakai@gallo.ucsf.edu
On Thu, Sep 25, 2008 at 1:42 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote: > Hi Everybody, > > About 1.5 month ago, my machine (which runs redhat linux > 2.6.9-78.0.1.ELsmp on Dell hardware with postgres 8.3.3) > had a terrible crash. I am mostly recovered, but there > is at least one more thing that's not right. > > Namely, when the machine gets rebooted, postgres doesn't > start automatically. Before the crash, there was no such > problem. In RH, you use chkconfig to see what's set to start: chkconfig --list will show you all the services and what run levels they come up in. chkconfig servicename on|off -- will turn a service on or off at boot. service servicename start -- will start a service.
Hi Scott,
When I issue: /sbin/chkconfig --list | grep postgres
it comes back with:
postgresql_ORG 0:off 1:off 2:off 3:off 4:off 5:off 6:off
postgresql 0:off 1:off 2:on 3:on 4:on 5:on 6:off
I felt a bit strange that it says 'off' at run level 6.
I went into /etc/rc.d and issued:
sudo find . -name \*postgresql\* -ls | grep S98postgresql
and it came back with:
15618186 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00 ./rc4.d/S98postgresql -> ../init.d/postgresql
15618294 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00 ./rc3.d/S98postgresql -> ../init.d/postgresql
15618351 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00 ./rc2.d/S98postgresql -> ../init.d/postgresql
15618024 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00 ./rc5.d/S98postgresql -> ../init.d/postgresql
Next, I went into /etc/rc.d/rc6.d and typed:
ls -l
and it gave me this:
. . . . . . . . . . .
. . . . . . . . . . .
lrwxrwxrwx 1 root root 20 Aug 21 17:00 S98postgresq -> ../init.d/postgresql
There is an 'l' missing from the name! I thought for a moment
I found the culprit, but then I issued the command below:
/sbin/chkconfig --list | grep '6:on'
and it returned nothing.
I am a bit confused. As I understand, run level 6 means, in
redhat context, shutdown and reboot. But it seems in my case
nothing is turned on for level 6. Then that missing 'l'
is really of no significance?
Any thoughts? Clues?
Regards,
Tena Sakai
tsakai@gallo.ucsf.edu
-----Original Message-----
From: Scott Marlowe [mailto:scott.marlowe@gmail.com]
Sent: Thu 9/25/2008 12:46 PM
To: Tena Sakai
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] postgres at reboot
On Thu, Sep 25, 2008 at 1:42 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> Hi Everybody,
>
> About 1.5 month ago, my machine (which runs redhat linux
> 2.6.9-78.0.1.ELsmp on Dell hardware with postgres 8.3.3)
> had a terrible crash. I am mostly recovered, but there
> is at least one more thing that's not right.
>
> Namely, when the machine gets rebooted, postgres doesn't
> start automatically. Before the crash, there was no such
> problem.
In RH, you use chkconfig to see what's set to start:
chkconfig --list
will show you all the services and what run levels they come up in.
chkconfig servicename on|off -- will turn a service on or off at boot.
service servicename start -- will start a service.
On Fri, Sep 26, 2008 at 2:38 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote: > Hi Scott, > > When I issue: /sbin/chkconfig --list | grep postgres > it comes back with: > > postgresql_ORG 0:off 1:off 2:off 3:off 4:off 5:off 6:off > postgresql 0:off 1:off 2:on 3:on 4:on 5:on 6:off > > I felt a bit strange that it says 'off' at run level 6. Run level 6 is reboot, so that's normal. > I went into /etc/rc.d and issued: > sudo find . -name \*postgresql\* -ls | grep S98postgresql > and it came back with: > > 15618186 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00 > ./rc4.d/S98postgresql -> ../init.d/postgresql > 15618294 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00 > ./rc3.d/S98postgresql -> ../init.d/postgresql > 15618351 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00 > ./rc2.d/S98postgresql -> ../init.d/postgresql > 15618024 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00 > ./rc5.d/S98postgresql -> ../init.d/postgresql > > Next, I went into /etc/rc.d/rc6.d and typed: > ls -l > and it gave me this: > . . . . . . . . . . . > . . . . . . . . . . . > lrwxrwxrwx 1 root root 20 Aug 21 17:00 S98postgresq -> > ../init.d/postgresql > > There is an 'l' missing from the name! I thought for a moment It shouldn't be there, sounds like someone added it by hand. > I found the culprit, but then I issued the command below: > /sbin/chkconfig --list | grep '6:on' > and it returned nothing. > > I am a bit confused. As I understand, run level 6 means, in > redhat context, shutdown and reboot. But it seems in my case > nothing is turned on for level 6. Then that missing 'l' > is really of no significance? Right, nothing should be started for those run levels.
Hi Scott,
It's too bad (in this particular case) that you are
agreeing with me! I want someone to find a hole in
my logic so that I can find a handle to fix the
problem. The problem being that postgres doesn't get
started when the machine gets rebooted.
Regards,
Tena Sakai
tsakai@gallo.ucsf.edu
-----Original Message-----
From: Scott Marlowe [mailto:scott.marlowe@gmail.com]
Sent: Fri 9/26/2008 1:44 PM
To: Tena Sakai
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] postgres at reboot
On Fri, Sep 26, 2008 at 2:38 PM, Tena Sakai <tsakai@gallo.ucsf.edu> wrote:
> Hi Scott,
>
> When I issue: /sbin/chkconfig --list | grep postgres
> it comes back with:
>
> postgresql_ORG 0:off 1:off 2:off 3:off 4:off 5:off 6:off
> postgresql 0:off 1:off 2:on 3:on 4:on 5:on 6:off
>
> I felt a bit strange that it says 'off' at run level 6.
Run level 6 is reboot, so that's normal.
> I went into /etc/rc.d and issued:
> sudo find . -name \*postgresql\* -ls | grep S98postgresql
> and it came back with:
>
> 15618186 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00
> ./rc4.d/S98postgresql -> ../init.d/postgresql
> 15618294 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00
> ./rc3.d/S98postgresql -> ../init.d/postgresql
> 15618351 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00
> ./rc2.d/S98postgresql -> ../init.d/postgresql
> 15618024 0 lrwxrwxrwx 1 root root 20 Aug 21 17:00
> ./rc5.d/S98postgresql -> ../init.d/postgresql
>
> Next, I went into /etc/rc.d/rc6.d and typed:
> ls -l
> and it gave me this:
> . . . . . . . . . . .
> . . . . . . . . . . .
> lrwxrwxrwx 1 root root 20 Aug 21 17:00 S98postgresq ->
> ../init.d/postgresql
>
> There is an 'l' missing from the name! I thought for a moment
It shouldn't be there, sounds like someone added it by hand.
> I found the culprit, but then I issued the command below:
> /sbin/chkconfig --list | grep '6:on'
> and it returned nothing.
>
> I am a bit confused. As I understand, run level 6 means, in
> redhat context, shutdown and reboot. But it seems in my case
> nothing is turned on for level 6. Then that missing 'l'
> is really of no significance?
Right, nothing should be started for those run levels.