monitor memory usage on w2k/2k3 server?

Daniel maher dmaher at acetechnology.com
Wed Jun 1 19:13:38 CEST 2005


Modifying check_snmp_storage.pl was, of course, my first instinct as well.  Unfortunately, it is apparently easier said than done.  To explain;

A quick reference at mibDepot.com for storage-related items reveals the hrStorage object group, which is exactly where one would expect to find storage-related items.  Items of note include the hrStorageSize and hrStorageUsed tabs.  So far so good, as these are the key items that check_snmp_storage.pl uses to poll for data.

Here's where the problem lies, however.  An snmpwalk of a number of Windows machines in-house reveals hrStorage entries for the physical hard disks, as well as for virtual memory - but not for physical memory.

Another interesting item is the hrMemorySize scalar, which does in fact report the total size of the physical memory, but does not appear to have a "usage" counterpart anywhere.  Thus, determining the total amount of RAM is easy, but figuring out how much of that is being used - that's the kicker.

Finally, the hrStorageRam object, while vaguely tantalising, does not appear at all during an snmpwalk of any of the target machines.. thus it remains a mystery entirely.


Daniel Maher
System Engineer
ACE TECHNOLOGY INC.
 
 

-----Original Message-----
From: Andreas Ericsson [mailto:ae at op5.se] 
Sent: June 1, 2005 12:54 PM
To: Daniel maher
Cc: nagios-users at lists.sourceforge.net
Subject: Re: [Nagios-users] monitor memory usage on w2k/2k3 server?




> 
> Does anybody have any ideas?
> 

Modify check_snmp_storage.pl to require the proper OID's.


-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer 

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