Open Stack

Hello,

I was wondering if you can recommend me a monitoring solution that is possibly best integrated with OpenStack?
I'm looking for something like Nagios/Zabbix/Icinga but which hopefully has pre-configured OpenStack module.
I know there is a ZenPack for Zenoss, but this one offers autodiscovery for VMs in OpenStack. I am more interested in monitoring the physical infrastructure here.

Any hints would be appreciated.

Regards,
Daniel