Is anyone using Nagios to monitor PostgreSQL?

If so, is there any way to check for more than just your PostgreSQL instance
being up?

This weekend, we had an issue where a database shutdown failed due to a
rogue query that would not die w/o a kill -9 being done on it. The database
remained up and accepted connections only to tell the connection to go away
because the database was shutting down.

This up and accepting connections caused our Nagios instance to not report
the database being down.

Any ideas on how to get around this?

Thanks,

Chris

I'm not familiar with Nagios, but you should be able to do something
like

psql -tc 'select 1' database

to see if it's alive and accepting queries.

On Mon, Nov 07, 2005 at 04:18:55PM -0500, Chris Hoover wrote:
> Is anyone using Nagios to monitor PostgreSQL?
>
> If so, is there any way to check for more than just your PostgreSQL instance
> being up?
>
> This weekend, we had an issue where a database shutdown failed due to a
> rogue query that would not die w/o a kill -9 being done on it. The database
> remained up and accepted connections only to tell the connection to go away
> because the database was shutting down.
>
> This up and accepting connections caused our Nagios instance to not report
> the database being down.
>
> Any ideas on how to get around this?
>
> Thanks,
>
> Chris

--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461

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What does the 'c' part of the -tc command do? It is not documented in
any information I have.

-----Original Message-----
From: pgsql-admin-owner@postgresql.org
[mailtogsql-admin-owner@postgresql.org]On Behalf Of Jim C. Nasby
Sent: Monday, November 07, 2005 5:38 PM
To: Chris Hoover
Cc: pgsql-admin@postgresql.org
Subject: Re: [ADMIN] Semi OT - Anyone monitoring PostgreSQL with nagios


I'm not familiar with Nagios, but you should be able to do something
like

psql -tc 'select 1' database

to see if it's alive and accepting queries.

On Mon, Nov 07, 2005 at 04:18:55PM -0500, Chris Hoover wrote:
> Is anyone using Nagios to monitor PostgreSQL?
>
> If so, is there any way to check for more than just your PostgreSQL
instance
> being up?
>
> This weekend, we had an issue where a database shutdown failed due to a
> rogue query that would not die w/o a kill -9 being done on it. The
database
> remained up and accepted connections only to tell the connection to go
away
> because the database was shutting down.
>
> This up and accepting connections caused our Nagios instance to not report
> the database being down.
>
> Any ideas on how to get around this?
>
> Thanks,
>
> Chris

--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461

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Same as -t -c...

On Tue, Nov 08, 2005 at 08:10:28AM -0500, Lane Van Ingen wrote:
> What does the 'c' part of the -tc command do? It is not documented in
> any information I have.
>
> -----Original Message-----
> From: pgsql-admin-owner@postgresql.org
> [mailtogsql-admin-owner@postgresql.org]On Behalf Of Jim C. Nasby
> Sent: Monday, November 07, 2005 5:38 PM
> To: Chris Hoover
> Cc: pgsql-admin@postgresql.org
> Subject: Re: [ADMIN] Semi OT - Anyone monitoring PostgreSQL with nagios
>
>
> I'm not familiar with Nagios, but you should be able to do something
> like
>
> psql -tc 'select 1' database
>
> to see if it's alive and accepting queries.
>
> On Mon, Nov 07, 2005 at 04:18:55PM -0500, Chris Hoover wrote:
> > Is anyone using Nagios to monitor PostgreSQL?
> >
> > If so, is there any way to check for more than just your PostgreSQL
> instance
> > being up?
> >
> > This weekend, we had an issue where a database shutdown failed due to a
> > rogue query that would not die w/o a kill -9 being done on it. The
> database
> > remained up and accepted connections only to tell the connection to go
> away
> > because the database was shutting down.
> >
> > This up and accepting connections caused our Nagios instance to not report
> > the database being down.
> >
> > Any ideas on how to get around this?
> >
> > Thanks,
> >
> > Chris
>
> --
> Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
> Pervasive Software http://pervasive.com work: 512-231-6117
> vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
>
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>
> http://www.postgresql.org/docs/faq
>
>
>
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>
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>

--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461

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TIP 6: explain analyze is your friend

psql -c COMMAND DATABASE

executes COMMAND using DATABASE and displays the results without
starting psql interactively.

Regards,
Eric Faulhaber


Lane Van Ingen wrote:
> What does the 'c' part of the -tc command do? It is not documented in
> any information I have.
>
> -----Original Message-----
> From: pgsql-admin-owner@postgresql.org
> [mailtogsql-admin-owner@postgresql.org]On Behalf Of Jim C. Nasby
> Sent: Monday, November 07, 2005 5:38 PM
> To: Chris Hoover
> Cc: pgsql-admin@postgresql.org
> Subject: Re: [ADMIN] Semi OT - Anyone monitoring PostgreSQL with nagios
>
>
> I'm not familiar with Nagios, but you should be able to do something
> like
>
> psql -tc 'select 1' database
>
> to see if it's alive and accepting queries.
>
> On Mon, Nov 07, 2005 at 04:18:55PM -0500, Chris Hoover wrote:
>
>>Is anyone using Nagios to monitor PostgreSQL?
>>
>>If so, is there any way to check for more than just your PostgreSQL
>
> instance
>
>>being up?
>>
>>This weekend, we had an issue where a database shutdown failed due to a
>>rogue query that would not die w/o a kill -9 being done on it. The
>
> database
>
>>remained up and accepted connections only to tell the connection to go
>
> away
>
>>because the database was shutting down.
>>
>>This up and accepting connections caused our Nagios instance to not report
>>the database being down.
>>
>>Any ideas on how to get around this?
>>
>>Thanks,
>>
>>Chris
>
>
> --
> Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
> Pervasive Software http://pervasive.com work: 512-231-6117
> vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
>
> ---------------------------(end of broadcast)---------------------------
> TIP 3: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/docs/faq
>
>
>
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>
> http://www.postgresql.org/docs/faq


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On Tuesday 08 November 2005 05:10, Lane Van Ingen wrote:
> What does the 'c' part of the -tc command do? It is not documented
> in any information I have.

Show tuples only (per psql --help)

Cheers,
Steve

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TIP 2: Don't 'kill -9' the postmaster