Nagios Strategies
Josh Yost
Josh.Yost at epsiia.com
Fri Dec 22 01:05:22 CET 2006
Hi,
Just my quick two cents - I've seen several times on our servers
(mostly on Windows 2000) that the SNMP service will be shown as running
even though the actual process has stopped responding. Then, we get a
flood of pages for all of our checks dependent on SNMP and have to
manually kill and restart the service.
If you're going to do a generic SNMP check, just make sure it's actually
pulling a value from SNMP because a simple NT check to see if the
service is in the running state isn't very reliable.
(we aren't actually using service deps. yet, but it's something I'm
getting around to since we're in the same boat as you =)).
- Josh
Matthew Joyce wrote:
> Hi all,
>
> I've found myself in a quandary and I'm wondering how other Nagios uses
> have address similar problems.
> We've recently upgraded to 2.6 and I've been tidying up the configs,
> sorting out service groups, etc.
>
> I've been adding checks for specific windows services, Exchange, Backup
> Exec, various MS SQL databases and that sort of thing.
> The more services I add, the more I consider their dependencies on each
> other.
> SNMP service is now a critical service, as without it I will get a storm
> of notification.
>
> I can see that service dependencies would fix this but it does seem
> overly complex to have to list each host/service pair in the dependency
> definition.
>
> One way I thought might work is to create a servicegroup called
> myserversnmp and add the service to the group in the service definition.
> Then, in the dependency definition, make that servicegroup dependent on
> SNMP Service on the host.
>
> This would mean I end up with a load of servicegroups, but make
> configuring easier as I just need to add one line per service and that's
> often done with copy/past/tweak.
>
> An alternative might be to regular expressions, but for me this would be
> an obfuscation, not really what I'm after.
> It would be nice if there was a service dependency directive in the
> service definition.
>
> How do others manage dependencies ?
>
>
>
> Thanks
>
> Matt
>
>
>
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