Re: [hobbit] Monitoring hosts behind a load balancer

[Ryan Novosielski <novosirj (at) umdnj.edu>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iEYEARECAAYFAkwXp7wACgkQmb+gadEcsb6j6ACfbmXK/tdbUCj+jvDkBr8hUape
vjUAn0Cv3AxjT6vPDbe7K3ZuFhYeJ/C0
=GJGN
-----END PGP SIGNATURE-----