A Ruby script for monitoring resource utilization in VPS's in an OpenVZ environment.
/proc/user_beancounters (by means of a cronjob) and sends an email whenever the failcount rises for some resource. This lets you to know that a VPS is working harder than it is configured for so you can change the configuration before it bogs under.
The script can be run both on a VPS or on the hardware node, monitoring all VPS's.
$ ubc_monitor -h
ubc_monitor is freely available under the