In order to attach the Ceph RBD to OpenStack instances, we should configure the Nova component of OpenStack by adding the RBD user and UUID information that it needs to connect to the Ceph cluster. To do this, we need to edit /etc/nova/nova.conf
on the OpenStack node and perform the steps that are given in the following section.
The Cinder service that we configured in the last recipe creates volumes on Ceph, however, to attach these volumes to OpenStack instances, we need to configure Nova:
- We have already configured the following options to enable volume attachment:
rbd_user=cinder rbd_secret_uuid= e279566e-bc97-46d0-bd90-68080a2a0ad8
- To test this configuration, we will attach the Cinder volume to an OpenStack instance. List the instance and volumes to get the ID:
# nova list
# cinder list
- Attach the volume to the instance:
# nova volume-attach 31000c20-5847-48eb-b2e3-6b681f5df46c 21bb3f31-6f9e-4d26-9afd-5eec3f450034...