Jonas Genannt

I'm using my fact and stored configurations in puppet to get the running Xen domU in my system.

I also maintain my nagios configuration with puppet, with the Xendomains fact, I automatically set in the nagios configuration the parents for an domU system.

The running domU on node1.fra.example.com is web1.fra.example.com.

The nagios configuration will look like:

define host{
use generic-host
host_name web1.fra.example.com
alias web1 - amd64
address 3.3.3.3
parents node1.fra.example.com
hostgroups XXX,XXX
}

Using this puppet parser function to fetch the dom0 for an domU system from the database.

After calling that function I can build the nagios configuration and using virtual resources in puppet to transfer that information to my nagios server.

If you are running some servers with Xen, you have the problem to figure out, where an domU is running.

If you are using puppet with stored configurations you need to install only the xendomains fact, that will be soon available in facter.

With this data, I create the following graph on-the-fly - documentation done!



Script is available on github.