Easy Web server monitoring tool

[Michael James]

We are having sporadic reports of our web server not responding.

Could be DNS, could be network, could be firewalls,
 could be the server itself.
I need a quick tool to set up monitoring,
 locally and from the sites that are having the problem.

I'd need to check DNS, ping, and a page get,
 preferably direct and through several remote proxies.

What's quick to set up, can call various scripts to check different aspects,
 and comes with a good cookbook of already written scripts.

eg: I'd need a GET script that effectively does a shift-reload
 against the remote proxy, or I'll only be testing the proxy.

TIA
michaelj

-- 
Michael James				michael.james at csiro.au
System Administrator			voice:	02 6246 5040
CSIRO Bioinformatics Facility	fax:		02 6246 5166