Best practices for running Nagios across multiple data centers
David Rosenstrauch
darose at darose.net
Wed Jun 22 18:34:59 CEST 2011
I've had a lot of experience using Nagios in my previous job, where we
used it to monitor numerous hosts and many different types of services -
albeit all in the same data center.
In my new job, however, I need to set up more sophisticated monitoring,
since we have servers located in multiple data centers, with each data
center containing a bunch of servers behind a firewall. What are some
of the best approaches for Nagios to handle monitoring a setup like this?
I'm assuming I'd need to set up multiple Nagios instances - one for each
data center - with each one monitoring the servers behind that data
center's firewall. What I'm wondering then, though, is how best to tie
that all together. Would I need to run another, "main" nagios instance
that takes in information from the others? If so, how best to feed the
data from the 2nd tier instances into the main one? Passive checks
sound like they could do the trick, but if I understand correctly, that
would mean I'd need to define each service check on both the main
instance (as a passive check) and on the 2nd tier instance (as an active
check), which sounds like a bit of a configuration headache.
Anyone have any good suggested reading on how to best configure a setup
like this? Feel free to RTFM me, though I wasn't able to turn up much
of use myself when searching on "nagios multiple data centers".
Thanks,
DR
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