---
title: "Nova"
canonical: "https://docs.infoblox.com/space/ipamdriverrhosp/53024067/Nova"
format: markdown
---
On each controller node running the Nova service, as well as compute nodes running nova-compute, you must configure Nova to send notifications. These notifications are used by the Infoblox IPAM agent to manage DNS entries and extensible attribute values for VMs. You can update the nova.conf configurations in **/var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf**.

Set the following values in `nova.conf`, if they are not already set:  
`notification_driver = messagingv2`  
`notification_topics = notifications`  
`notify_on_state_change = vm_state`

## Restarting the nova_compute Container

To restart the nova_compute container, use the following commands:

`$docker stop nova_compute`

`$docker start nova_compute`