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RE: [Linux-cluster] Monitoring Failovers



I implemented a monitor for a clustered MySQL service. Wrote it up at
http://leapfrog.motd.org/2008/02/26/monitoring-mysql-and-redhat-cluster/
As it implies, it's specific to monitoring MySQL but the methodology
could be applied to any service (as long as something returns
host-specific information.)


Jeff Stoner | Performance Engineer 
24x7: 800.664.9974 | jstoner opsource net
OpSource, Inc. | www.opsource.net | "The Business of Web Operations"

 

> -----Original Message-----
> From: linux-cluster-bounces redhat com 
> [mailto:linux-cluster-bounces redhat com] On Behalf Of Burton Simonds
> Sent: Friday, February 20, 2009 11:05 AM
> To: linux clustering
> Subject: [Linux-cluster] Monitoring Failovers
> 
> I am in the process of setting up Nagios for system monitoring, and I
> would like to have a way to know if a failover has occurred.  If
> everything works as it should, there be a minimal impact on the
> services.  Right now it looks like my best bet is basically scrape the
> logs and look for the failover messages there and trigger an alarm.
> 
> I was wondering if anyone else has done anything.  I found in an
> archive a check_rhcs script that I am going to employ (which looks
> pretty cool), but that just looks at the status of the services.  I
> want to either compare the current status to the previous status or
> have something monitoring the cluster an pushes the alert to Nagios.
> 
> Thanks,
> B
> 
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> Linux-cluster redhat com
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> 
> 


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