Monitoring clustered resources with Windows...

[Andrew Davis]

One of our admins is actively migrating us from Server 2003 to Server 
2008 and using the built-in clustering capabilities of '08 to enable 
service-level failover. So far, he's done so with Exchange, print server 
services, and SQL. I'm wondering how to best monitor shares resources on 
Windows hosts from Nagios. At present, we use nsclient++ to watch the 
physical servers. This is good for basic checks of load average, memory, 
local disk consumption, etc. I can even monitor services that are 
running. No, I know I can monitor anything that's accessible from an IP 
and port, but I'm somwhat stumped on other resources...

For example, we have two physical Exchange servers. They're in a cluster 
and the various Exchange services are only active on one node at a time. 
I can watch OWA as its accessible from an IP and port, but the Exchange 
services themselves will stop on one server and start on the other if a 
server fails. Nagios can't dynamically adjust to watch this service on 
the new node. It will only yell that's its down on the failed node.

Clustered file storage is another example. Again, I can watch the local 
CPU, memory, and local C: drive, etc. But let's say its sharing a large 
volume as drive F:. I can watch this fine on the primary node, but if it 
fails over, its no longer accessible from that node as its being shared 
on the new active node.

I'm curious if any Nagios users are using clustered resources on the 
Windows side and how you handle service failover of services that aren't 
necessarily accessible by IP and port...

-- 


  A. Davis
  Email:     nccomp at gmail.com

  "There is no limit to what a man can accomplish
   if he doesn't care who gets the credit." - Ronald Reagan

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