VPS node monitoring software
I'm going to setup a VPS node in near future for myself and few people I know. It will run both OpenVZ and KVM instances.
I would like to know what tools or software you are using to monitor the node's resources or to be more specific I want to know which VPS is abusing the node in case of abuse.
Do you use Nagios self made plugins or you just install Munin or other monitoring tool on the node?
Thank you for suggestions.