Attaching volumes to an instance

Now that we have a usable volume, we can attach it to any instance. We'll do this using the openstack server volume add command.

Getting ready

To attach a volume to an instance, you will need the following:

• The openstack command-line client

• An openrc file with appropriate credentials for the environment

• The name or ID of the volume to attach

• The name or ID of the instance to attach the volume to

For our example, these values are as follows:

• Volume: cookbook.volume

• Instance: cookbook.test

How to do it...

Carry out the following steps to attach a volume to an instance using the openstack client:

1. First, let's list running instances to get the ID of our instance:

   openstack server list -c Name -c ID -f table
   

   An example showing our running instance called cookbook.test is shown here:

   

2. Now list the available volumes to get the ID of our volume:

   openstack volume list
   

   This shows the information we need about our volume:

   

3. Using the instance and volume name or IDs, we'll attach the...