monitoring windows cluster

[Matt Pounsett]

On Wed, 4 Feb 2004, Neil wrote:

> IP takeover happens in the background and sometimes takes few seconds. Not 
> even Nagios will notice the switching most especially if had an an normal 
> interval say of 4 or 5 minutes. But, I think, it's still nice to monitor 
> every private ip address of each node in the cluster. In this way, we'll 
> know which one of the nodes failed. Is this a good idea? 

This is what I do for our load-balanced services.  Each individual real server
is monitored, along with all the services it offers.  I also monitor the
virtual hostnames associated with the load group.  For a more specific
example, suppose I have three machines which are my web servers, and a load
balancer out front.  I'll check the http service on all three real machines,
the status of the load balancer itself, as well as the http service for the
"www" host, which is really only an IP address on the load balancer.

Works like a charm.

-- 
Matt Pounsett                 CIRA - Canadian Internet Registration Authority
Technical Support Programmer                    350 Sparks Street, Suite 1110
matt.pounsett at cira.ca                                 Ottawa, Ontario, Canada
613.237.5335 ext. 231                                      http://www.cira.ca



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