Monitoring Shared Storage

[Jon Angliss]

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On Mon, 29 Sep 2008 02:29:38 -0700, Jay Chandler
<lists at sequestered.net> wrote:

>I've got a scenario that I'd imagine many of you have already dealt 
>with, so before I roll my own solution I figured I'd ask y'all what 
>you've done.
>
>I have roughly 50 servers or so that mount their home directories (as 
>well as a few other things, but let's talk about /home for simplicity) 
>from an NFS server (isilon at the moment, shortly to become a NetApp).
>
>Because space is expensive, periodically central storage fills up.  This 
>results in /home sending out notifications from all 50 servers. 

I'm relatively sure that you should be able to query the storage
device directly for space reports (SNMP for example).  This would mean
you setup a host for the isolon/NetApp to monitor the storage usage. 
Then, your monitoring of the individual servers storage space, would
really be for connectivities sake to ensure communications back to the
storage.  Setup service dependencies, and when the server goes down,
the various other hosts won't alert that /home isn't mounted any more
because it's nicely handled by the dependency.

>Is there a good way to set things up so that if central storage fills up 
>I don't get paged by every system we've got?  I don't want to give up 
>monitoring /home on these hosts since our configuration monkey has 
>screwed up before and NOT mounted the NFS share, leading to the 
>mountpoint on local disk filling up instead.

Service Dependencies as Patrick mentioned, along with monitoring the
storage solution directly.

- -- 
Jon Angliss

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