[BBLISA] simpler alternative to Nagios

[Elizabeth Schwartz]

I'll throw in another vote for xymon.  We're in the process of
converting from Big Brother to xymon at work.  BB works great right
out of the box and there are a lot of extensions possible. I've used
add-on scripts for Big Brother that check virtual memory stats, zfs
state, IMAP, and proprietary in-house software throughput - if you can
script it, BB can monitor it.   At my last job I was a one-person show
and BB was a lifesaver. Xymon is open source/GPL and has a lot of good
metrics tools built right in (rolled up from BB add-ons LARRD and
BBGEN). Also, the BB alerting side is a bit hard to customize in a
larger group, compared to Xymon)

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