"libvirt" plugin
The libvirt-plugin uses the virtualization API libvirt,
created by RedHat's Emerging Technology group, to gather statistics about
virtualized guests on a system. This way, you can collect CPU, network interface and block device usage for each
guest without installing collectd on the guest systems. Because the
statistics are received from the hypervisor directly, this works not only with paravirtualized hosts, but with
hardware virtualized machines, too.
Other statistics than the ones listed above can not be collected through this plugin. For more detailed statistics you will need to install collectd on each guest.
The plugin can be configured to only collect specific domains, block devices or interfaces. For a full
description of available please refer to
the libvirt section in the
collectd.conf(5) manual page.