[CentOS] Is there a web-based server status package?

Tue Mar 24 16:02:53 UTC 2009
Xn Nooby <xnooby at gmail.com>

I have a small squirrelmail server using Postfix & Dovecot, and I
would like to add a web-based "status" screen to remotely check its
health. Is there a preferred packaged for doing this?

I mostly want to monitor disk space usage, and CPU utilization.