I am searching for a good open source tool to monitor my server.I have 15 Sun Solaris machines and few Linux machines that i want to monitor but i want only to monitor the performances (disk usage, disk utilization, CPU utilization, up time, etc.).
Is there any good tool that can do performance reports and monitoring of this server(free tool).
I tried GW monitor but i am not happy with it.
It doesn't matter if it is necessary to install any agent on the server, it would be better without them but doesn't matter.
Thanks in advance