Configuring Nova to Integrate with Ceph

Modify the Nova configuration file on OpenStack to integrate Nova with Ceph.

1. On the OpenStack compute node (Nova compute node), modify the /etc/nova/nova.conf file.
   1. Open the file.

      vi /etc/nova/nova.conf

   2. Press i to enter the insert mode and modify the file as follows:

      [DEFAULT] 
      ... 
      live_migration_flag = "VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE,VIR_MIGRATE_PERSIST_DEST,VIR_MIGRATE_TUNNELLED" 
       
      [libvirt] 
      ... 
      virt_type = kvm 
      images_type = rbd 
      images_rbd_pool = vms 
      images_rbd_ceph_conf = /etc/ceph/ceph.conf 
      disk_cachemodes="network=writeback" 
      rbd_user = cinder 
      rbd_secret_uuid = b3d5fee6-839c-482e-b244-668bad7128a9

      

      Change the value of rbd_secret_uuid to the UUID generated when a key is added to libvirt.

   3. Press Esc to exit the insert mode. Type :wq! and press Enter to save the file and exit.
2. On the OpenStack compute node (Nova compute node), restart the nova-compute service.

   systemctl restart openstack-nova-compute.service