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I'm looking for a simple, easy to install, works on all of the major linux distros, works with SNMP, monitoring agent software.
It should simply report the disk usage, server load, process list, uptime, memory usage etc with SNMP.
edit - to describe what I'm trying to achieve in a more simplistic way:
I'm looking to install a tiny software on the servers I want to get real time statistics from and ability to connect that software to get those statistics.