Monitoring Disk and CPU Utilization

[Russell Adams]

I monitor SNMP disks via HOSTMIB, however I had to write my own snmp
plugin to calculate the percentage from the free/used block values
that are returned.

Its not perfect, but they've been adequate for several years. ;]

I could post a copy of the plugin. Its a shell script that uses
ucd-snmp commands to get the hrStorageTable.

As to the configuration, thats always been the biggest problem with
monitoring at my site. Keeping the configuration up to date can be a
hassle. I've been looking at expanding a tool I use with Cricket
(namely CHIRP) to output Nagios configs. Just haven't had time. ;]

Russell

On Tue, Feb 24, 2004 at 08:31:13AM -0500, Platt, Nicholas wrote:
> Russell or anyone esle,
> 
> I appreciate your help.   I know the HOSTMIB has CPU% utilization but I've
> not seen a percentage for disk space.  HOSTMIB does give me total space and
> used space, but not a percentage.    Any hints on setting up a check_snmp
> WARNING and CRITICAL parameters for disk space?  Thanks
> 
> It also seems pretty demanding to try and keep up with 350+ servers because
> if one of them adds a disk drive, then another OID has to be polled.  Wow,
> lots of work.  Maybe there is an easier way.  Can any one advise me?   I'm
> not a PERL programmer; therefore, I must rely on Nagios plug-ins. Thanks
> 
> -----Original Message-----
> From: Russell Adams [mailto:RLAdams at Kelsey-Seybold.com] 
> Sent: Friday, February 13, 2004 5:00 PM
> To: 'nagios-users at lists.sourceforge.net'
> Subject: Re: [Nagios-users] Monitoring Disk and CPU Utilization
> 
> I try to standardize on using HOSTMIB via SNMP for disk space and
> process monitoring. It also simplifies my network interface collection
> via Cricket.
> 
> Win2k has hostmib in the standard snmp service which comes on cd but
> isn't installed by default. Make sure to be at SP3, or install patch
> Q295587 because otherwise the disk statistics never get updated.
> 
> Linux using NET-SNMP or UCD-SNMP do hostmib quite well.
> 
> I'm trying to get AIX working with hostmib and snmp, but its
> resisting. ;]
> 
> Russell
> 
> On Fri, Feb 13, 2004 at 02:18:17PM -0500, Platt, Nicholas wrote:
> > Hello,
> > 
> > I've just installed Nagios and I am very please with the product.  I'm
> > not a Linux guy, but the instructions have been so good that it has been
> > an easy experience.  Good work!  I've been able to populate the NMS with
> > 500+ host and monitor over 1000+ services.   I plan to grow it.   I've
> > been asked to monitor host CPU and host disk usage.    I've read that
> > there is two ways monitor this function.  One is installing a client on
> > each server and the other is SNMP.   Since our shop has several types of
> > boxes and OS, for us it is better to poll the box via SNMP.  I've not
> > been able to find detailed documentation on how to have Nagios poll via
> > SNMP for disk usage.  Now, when I say documentation, I have found a
> > check_snmp plug-in, but did not have enough documentation for a beginner
> > to be able to utilize it.    Can you point me to any check_snmp
> > documentation that will clearly describe how I can poll servers via
> > SNMP?    If believe the client version is better, will it support Unix,
> > Linux, Novell, and NT?  You guys have always been very supportive.
> > Thank you.
> > 
> > BM__MailAutoSigR. Nicholas Platt
> > 
> > Communication Engineer Supervisor
> > 
> > State Technology Office
> > 
> > State of Florida
> > 
> > Phone:  850.413.9535
> > 
> > E-Mail:  nick.platt at myflorida.com
> > 
> 
> 
> 
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