[hobbit] Monitoring hosts behind a load balancer

[Ryan Novosielski]

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Steve Holmes wrote:
> Greetings, I'm monitoring several Solaris 10 servers which are behind an
> F5 load balancer. One of the features of the F5 is that it answers pings
> for all of the hosts behind it, even if they are all down. Has anyone
> devised a method of testing the servers for being alive in this context?
> There are no other network based tests being done. Yes, all of the other
> tests eventually go purple in Xymon, but we'd like to know that the
> hosts are down when that happens.

Have you considered devmon which monitors the f5 itself? I'm not sure
what parameters it shows, however. I believe you can also do a content
test (eg. your f5 can be configured to say something foreboding and you
can configure Xymon to look for it as bad news).

- --
- ---- _  _ _  _ ___  _  _  _
|Y#| |  | |\/| |  \ |\ |  | |Ryan Novosielski - Sr. Systems Programmer
|$&| |__| |  | |__/ | \| _| |novosirj at umdnj.edu - 973/972.0922 (2-0922)
\__/ Univ. of Med. and Dent.|IST/CST-Academic Svcs. - ADMC 450, Newark
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