Unix Monitoring tool

Hi all,

Please let me know the most using, perfect unix monitoring tool and the link for downloading the tool. It should have network server monitoring on all aspect(working users, memory usage, working services, disk space etc).

Thanks
Rath

There are generally 3 free choices: ganglia, nagios, and zenos. The latter is new and supposedly has many cool features but I have not tried it. Ganglia is used by many cluster administrators and scales well to hundreds of computers. Nagios is highly configurable and great in complex, heterogeneous environments consisting of many different hardware and service types. Just google for the tool that seems to best suit your needs.

nagios.org - its complicated but very flexible. have lots of inbuild plugins to check service status like OK, Warning and Critical.

it totally depend on requirement. do you have any specific requirements ?

Thanks,
Nilesh

Cacti is nice.