Обсуждение: Start up error
Hello Sir, =20 I have installed postgresql DB on my Linux server. =20 When I am trying to stop and start the DB, below error is reported in postgresql start up log file. =20 FATAL: lock file "postmaster.pid" already exists HINT: Is another postmaster (PID 25372) running in data directory "/var/lib/pgsql/data"? FATAL: lock file "postmaster.pid" already exists HINT: Is another postmaster (PID 25372) running in data directory "/var/lib/pgsql/data"? =20 I have deleted the file postmaster.pid in the directory /var/lib/pgsql/data for number of times and restarted the postgresql service, but I am still not able to restart the server and the same error is repeating again. =20 Could you please suggest on this as the applications are completely inaccessible due to this error. =20 Thanks&Regards, -Jawad. =20 =20 =20
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sat, Nov 17, 2007 at 08:19:37AM +0800, Hussain Jawad-FXRM43 wrote: > Hello Sir, > > I have installed postgresql DB on my Linux server. > > When I am trying to stop and start the DB, below error is reported in > postgresql start up log file. > > FATAL: lock file "postmaster.pid" already exists > HINT: Is another postmaster (PID 25372) running in data directory > "/var/lib/pgsql/data"? > FATAL: lock file "postmaster.pid" already exists > HINT: Is another postmaster (PID 25372) running in data directory > "/var/lib/pgsql/data"? This doesn't look like a PostgreSQL bug. I'd suggest to post such questions in other mailing lists. Have a look at <http://www.postgresql.org/community/lists/> especially pgsql-general or pgsql-novice > I have deleted the file postmaster.pid in the directory > /var/lib/pgsql/data for number of times and restarted the postgresql > service, but I am still not able to restart the server and the same > error is repeating again. - From your mail I gather that this postmaster.pid "appears" every time you start the service. Things to check: (1) are you really sure the service is not running? (try e.g. ps wwaux | grep postmaster). (2a) if the answer to (1) is "service is not running", that would mean that the postmaster process starts, creates the PID file and dies unexpectedly. In this case: have you had a look at the relevant log files (typically in /var/log/postgresql -- but it depends on distribution). (2a) if the answer to (1) is "is running", but your clients are not able to connect, perhaps the server is listening just on an unix domain socket while the clients are trying to contact it via an Internet socket. HTH. Regards - -- tomás -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQFHPtO6Bcgs9XrR2kYRAiEAAJ4gt/IKJSHvB4kJmADWChXmXdwtSgCfW52W CiMqL1XXWgcN2X0Wi+7wumI= =g8Jw -----END PGP SIGNATURE-----
"Hussain Jawad-FXRM43" <FXRM43@motorola.com> writes:
> When I am trying to stop and start the DB, below error is reported in
> postgresql start up log file.
Exactly what are you doing to start and stop the server? If you are
using a startup script, whose is it?
> I have deleted the file postmaster.pid in the directory
> /var/lib/pgsql/data for number of times and restarted the postgresql
> service, but I am still not able to restart the server and the same
> error is repeating again.
The best theory that comes to mind is that your start procedure is
somehow starting multiple copies of the postmaster. The first one
starts OK and then the second (and third?) ones fail with the
lockfile complaint --- as well they should.
I'm a bit afraid that your manual removals of the lockfile (which is
A Bad Idea as a rule) have left you with multiple versions of the
postmaster running sans lockfile. This would be very bad because you
can easily end up with a corrupted database. Have you looked around
with "ps" to verify that there really aren't any postgres-owned
processes left over after a "failed" start?
In particular, you should absolutely not see any lockfile complaints
unless the PID mentioned in the message is a live process. What is
PID 25372 and what is it doing?
regards, tom lane
Hi Tom,
Thank you for your time.
Below are the answers for your queries.
1)I am using /etc/rc.d/init.d/postgresql stop/start to stop and start
the postgresql service.
2)There are several postgresql process running after a failed
restart.Below are the proccesess
ps -ef|grep post
root 730 30758 0 12:22 pts/2 00:00:00 grep post
postgres 2700 15927 73 12:00 ? 00:16:15 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 6706 15927 72 12:00 ? 00:15:42 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 14351 15927 69 12:02 ? 00:13:38 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 15927 1 0 11:58 ? 00:00:05 /usr/bin/postmaster -p
5432 -D /var/lib/pgsql/data
postgres 15936 15927 0 11:58 ? 00:00:00 postgres: logger process
postgres 15967 15927 0 11:58 ? 00:00:00 postgres: writer process
postgres 15968 15927 0 11:58 ? 00:00:00 postgres: stats buffer
process=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
postgres 15969 15968 0 11:58 ? 00:00:00 postgres: stats
collector process=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
postgres 16118 15927 73 11:58 ? 00:17:23 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 23600 15927 65 12:08 ? 00:09:25 postgres: cscti csctools
[local] DELETE=20
3)There is no process running with PID 25372.
I have been asked to reboot the server to fix this, what precautions
should be taken before reboot to get the postgresql DB working after
reboot.
Is really reboot will fix the issue.Could you please suggest.
Thanks & Regards,
-Jawad.=20=20=20=20=20=20=20=20=20=20
-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]=20
Sent: Saturday, November 17, 2007 9:48 PM
To: Hussain Jawad-FXRM43
Cc: pgsql-bugs@postgresql.org
Subject: Re: [BUGS] Start up error=20
"Hussain Jawad-FXRM43" <FXRM43@motorola.com> writes:
> When I am trying to stop and start the DB, below error is reported in=20
> postgresql start up log file.
Exactly what are you doing to start and stop the server? If you are
using a startup script, whose is it?
> I have deleted the file postmaster.pid in the directory=20
> /var/lib/pgsql/data for number of times and restarted the postgresql=20
> service, but I am still not able to restart the server and the same=20
> error is repeating again.
=20
The best theory that comes to mind is that your start procedure is
somehow starting multiple copies of the postmaster. The first one
starts OK and then the second (and third?) ones fail with the lockfile
complaint --- as well they should.
I'm a bit afraid that your manual removals of the lockfile (which is A
Bad Idea as a rule) have left you with multiple versions of the
postmaster running sans lockfile. This would be very bad because you
can easily end up with a corrupted database. Have you looked around
with "ps" to verify that there really aren't any postgres-owned
processes left over after a "failed" start?
In particular, you should absolutely not see any lockfile complaints
unless the PID mentioned in the message is a live process. What is PID
25372 and what is it doing?
regards, tom lane
=20
Below is the status of postgresql after restart
/etc/rc.d/init.d/postgresql status
postmaster (pid 25114 23600 16118 15969 15968 15967 15936 15927 14351
6706 2700) is running..
Thanks&Regards,
-Jawad
-----Original Message-----
From: Hussain Jawad-FXRM43=20
Sent: Tuesday, November 20, 2007 1:04 AM
To: 'Tom Lane'
Cc: pgsql-bugs@postgresql.org
Subject: RE: [BUGS] Start up error=20
Hi Tom,
Thank you for your time.
Below are the answers for your queries.
1)I am using /etc/rc.d/init.d/postgresql stop/start to stop and start
the postgresql service.
2)There are several postgresql process running after a failed
restart.Below are the proccesess
ps -ef|grep post
root 730 30758 0 12:22 pts/2 00:00:00 grep post
postgres 2700 15927 73 12:00 ? 00:16:15 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 6706 15927 72 12:00 ? 00:15:42 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 14351 15927 69 12:02 ? 00:13:38 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 15927 1 0 11:58 ? 00:00:05 /usr/bin/postmaster -p
5432 -D /var/lib/pgsql/data
postgres 15936 15927 0 11:58 ? 00:00:00 postgres: logger process
postgres 15967 15927 0 11:58 ? 00:00:00 postgres: writer process
postgres 15968 15927 0 11:58 ? 00:00:00 postgres: stats buffer
process=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
postgres 15969 15968 0 11:58 ? 00:00:00 postgres: stats
collector process=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
postgres 16118 15927 73 11:58 ? 00:17:23 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 23600 15927 65 12:08 ? 00:09:25 postgres: cscti csctools
[local] DELETE=20
3)There is no process running with PID 25372.
I have been asked to reboot the server to fix this, what precautions
should be taken before reboot to get the postgresql DB working after
reboot.
Is really reboot will fix the issue.Could you please suggest.
Thanks & Regards,
-Jawad.=20=20=20=20=20=20=20=20=20=20
-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Saturday, November 17, 2007 9:48 PM
To: Hussain Jawad-FXRM43
Cc: pgsql-bugs@postgresql.org
Subject: Re: [BUGS] Start up error=20
"Hussain Jawad-FXRM43" <FXRM43@motorola.com> writes:
> When I am trying to stop and start the DB, below error is reported in=20
> postgresql start up log file.
Exactly what are you doing to start and stop the server? If you are
using a startup script, whose is it?
> I have deleted the file postmaster.pid in the directory=20
> /var/lib/pgsql/data for number of times and restarted the postgresql=20
> service, but I am still not able to restart the server and the same=20
> error is repeating again.
=20
The best theory that comes to mind is that your start procedure is
somehow starting multiple copies of the postmaster. The first one
starts OK and then the second (and third?) ones fail with the lockfile
complaint --- as well they should.
I'm a bit afraid that your manual removals of the lockfile (which is A
Bad Idea as a rule) have left you with multiple versions of the
postmaster running sans lockfile. This would be very bad because you
can easily end up with a corrupted database. Have you looked around
with "ps" to verify that there really aren't any postgres-owned
processes left over after a "failed" start?
In particular, you should absolutely not see any lockfile complaints
unless the PID mentioned in the message is a live process. What is PID
25372 and what is it doing?
regards, tom lane
Hi Tom,
Further to the below mail.
Below is the status of postgresql startup status.
/etc/rc.d/init.d/postgresql status
postmaster (pid 25114 23600 16118 15969 15968 15967 15936 15927 14351
6706 2700) is running...
Thanks&Regards,
-Jawad
-----Original Message-----
From: Hussain Jawad-FXRM43=20
Sent: Tuesday, November 20, 2007 1:04 AM
To: 'Tom Lane'
Cc: pgsql-bugs@postgresql.org
Subject: RE: [BUGS] Start up error=20
Hi Tom,
Thank you for your time.
Below are the answers for your queries.
1)I am using /etc/rc.d/init.d/postgresql stop/start to stop and start
the postgresql service.
2)There are several postgresql process running after a failed
restart.Below are the proccesess
ps -ef|grep post
root 730 30758 0 12:22 pts/2 00:00:00 grep post
postgres 2700 15927 73 12:00 ? 00:16:15 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 6706 15927 72 12:00 ? 00:15:42 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 14351 15927 69 12:02 ? 00:13:38 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 15927 1 0 11:58 ? 00:00:05 /usr/bin/postmaster -p
5432 -D /var/lib/pgsql/data
postgres 15936 15927 0 11:58 ? 00:00:00 postgres: logger process
postgres 15967 15927 0 11:58 ? 00:00:00 postgres: writer process
postgres 15968 15927 0 11:58 ? 00:00:00 postgres: stats buffer
process=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
postgres 15969 15968 0 11:58 ? 00:00:00 postgres: stats
collector process=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
postgres 16118 15927 73 11:58 ? 00:17:23 postgres: cscti csctools
[local] DELETE=20=20=20=20=20=20=20=20=20=20=20
postgres 23600 15927 65 12:08 ? 00:09:25 postgres: cscti csctools
[local] DELETE=20
3)There is no process running with PID 25372.
I have been asked to reboot the server to fix this, what precautions
should be taken before reboot to get the postgresql DB working after
reboot.
Is really reboot will fix the issue.Could you please suggest.
Thanks & Regards,
-Jawad.=20=20=20=20=20=20=20=20=20=20
-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Saturday, November 17, 2007 9:48 PM
To: Hussain Jawad-FXRM43
Cc: pgsql-bugs@postgresql.org
Subject: Re: [BUGS] Start up error=20
"Hussain Jawad-FXRM43" <FXRM43@motorola.com> writes:
> When I am trying to stop and start the DB, below error is reported in=20
> postgresql start up log file.
Exactly what are you doing to start and stop the server? If you are
using a startup script, whose is it?
> I have deleted the file postmaster.pid in the directory=20
> /var/lib/pgsql/data for number of times and restarted the postgresql=20
> service, but I am still not able to restart the server and the same=20
> error is repeating again.
=20
The best theory that comes to mind is that your start procedure is
somehow starting multiple copies of the postmaster. The first one
starts OK and then the second (and third?) ones fail with the lockfile
complaint --- as well they should.
I'm a bit afraid that your manual removals of the lockfile (which is A
Bad Idea as a rule) have left you with multiple versions of the
postmaster running sans lockfile. This would be very bad because you
can easily end up with a corrupted database. Have you looked around
with "ps" to verify that there really aren't any postgres-owned
processes left over after a "failed" start?
In particular, you should absolutely not see any lockfile complaints
unless the PID mentioned in the message is a live process. What is PID
25372 and what is it doing?
regards, tom lane
"Hussain Jawad-FXRM43" <FXRM43@motorola.com> writes:
> 2)There are several postgresql process running after a failed
> restart.Below are the proccesess
> ps -ef|grep post
> root 730 30758 0 12:22 pts/2 00:00:00 grep post
> postgres 2700 15927 73 12:00 ? 00:16:15 postgres: cscti csctools
> [local] DELETE
> postgres 6706 15927 72 12:00 ? 00:15:42 postgres: cscti csctools
> [local] DELETE
> postgres 14351 15927 69 12:02 ? 00:13:38 postgres: cscti csctools
> [local] DELETE
> postgres 15927 1 0 11:58 ? 00:00:05 /usr/bin/postmaster -p
> 5432 -D /var/lib/pgsql/data
> postgres 15936 15927 0 11:58 ? 00:00:00 postgres: logger process
> postgres 15967 15927 0 11:58 ? 00:00:00 postgres: writer process
> postgres 15968 15927 0 11:58 ? 00:00:00 postgres: stats buffer
> process
> postgres 15969 15968 0 11:58 ? 00:00:00 postgres: stats
> collector process
> postgres 16118 15927 73 11:58 ? 00:17:23 postgres: cscti csctools
> [local] DELETE
> postgres 23600 15927 65 12:08 ? 00:09:25 postgres: cscti csctools
> [local] DELETE
That hardly looks like a "failed restart". I can't help wondering if
you were looking at the wrong log file.
regards, tom lane