Monitoring cross-server services?
Carroll, Jim P [Contractor]
jcarro10 at sprintspectrum.com
Tue Jan 21 00:39:18 CET 2003
Sounds like defining service dependencies might be the route to go:
http://nagios.sourceforge.net/docs/1_0/dependencies.html
jc
> -----Original Message-----
> From: Steven Grimm [mailto:koreth-nagios at midwinter.com]
> Sent: Monday, January 20, 2003 5:17 PM
> To: nagios-users at lists.sourceforge.net
> Subject: [Nagios-users] Monitoring cross-server services?
>
>
> What's the accepted way to set up monitoring of distributed
> or peer-to-peer
> services? For example, I have a server app that connects to copies of
> itself on other hosts to keep its data synchronized. I'd
> ideally like to
> make sure that each host is connected to all the peers it's
> supposed to
> talk to.
>
> The problem is, if hosts A, B, and C are all connected to
> each other, I
> don't want the services on hosts A and C to show up as broken
> if host B
> crashes, since I'll have already gotten a notification about
> host B and
> the error indications on the other two hosts will just be distracting
> clutter on the status web page.
>
> On the other hand, if there's a connectivity problem between
> hosts A and
> B but both hosts are healthy and reachable from the monitoring host, I
> *do* want the error condition to be flagged. (Application-level
> connectivity, I mean, not necessarily IP connectivity.)
>
> The best solution I've come up with is to wrap a local plugin
> around the
> call to the plugin on the remote host that checks the status
> of the app;
> the remote plugin reports back a list of peers that the app isn't
> connected to, and the local plugin checks the Nagios status
> file to make
> sure the app is listed as OK on all those peers. If all the problem
> peers are offline, the warning/critical result from the remote plugin
> is suppressed.
>
> Anyone have a better approach?
>
> -Steve
>
>
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