Using Collectd virt plugin is a good point to start, for more information,
you can read this article
https://community.rackspace.com/products/f/25/t/6800
Using Ceilometer with MongoDB for monitoring services will give heavy load
because of too many api requests (tesed with Kilo and Liberty). We
>>I know that ceilometer may be an option, but I believe operators use all kind
>>of tools for their own ressource usage monitoring. So what do you people use?
>>
>>(For this use case, we're looking for something that can be used without
>>installing an agent in the VM, which makes it impossible
We have some custom scripts that run on the hypervisors which poll:
virsh dominfo
virsh domiflist
etc
The memory stats with "virsh dommemstat" are, AFAIK, not accurate since
there's nothing triggering kvm / the vm to release unused memory. But all
other virsh stuff works well for us.
We don't
