Nagios is great for self-hosted service monitoring in an intranet, but what about offsite monitoring? Does anyone sell a network service availability service that goes beyond ping and HTTP?
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Plenty of places will do off-site monitoring. Typically you will see Solarwinds Orion, NetQoS Netvoyant, and Zenoss offered before Nagios though(at least from what I've seen offered).
From sparks -
I just rent a VPS for ~$30/month and run nagios on it as well. Seems to work great.
From trent -
http://www.serverdensity.com is a hosted application to do just that - CPU load, memory usage, process breakdown, etc.
(This is a product from my company)
jldugger : I'm more interested in network availability, which means a script running on a remote host rather than local to the network. For example I have SVN configured to run via xinetd; it won't show up in /proc unless someone is actively using the protocol. NagiosExchange has a check_svn script that sufficiently handles this concept.From DavidM -
I use a combination of munin + nagios :
munin on all my offsite nodes, check_munin_rrd.pl on nagios (granted nagios host can read the generated rrd files)
check_munin_rrd.pl reads the rrd munin generates and alert you if anything goes above a threshold, so you can monitor anything that munin can see (cpu, load, network) It's not real time (data gathering every 5 min). For real time, you could also have a look on a regular snmp solution but it's a bit tricky in my opinion. In a sense munin-node becomes your snmp agent.
From jrottenberg -
Honestly I would look at using nagios on an offsite host (like http://www.slicehost.com/). Install it there securely, then allow for a tunneled ssl link back into your main nagios system. Then you can have a single place to monitor all of your systems internal and external.
From bread555
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