This procedure details the steps involved in attaching a Cinder volume to an existing to compute instance using the cinder and nova command-line interfaces.
Now that we have a usable volume, we can attach this to any instance. We do this by using the nova volume-attach command in Nova Client.
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To begin with, assure that you are logged into the Ubuntu client that has access to the Nova Client tools. These packages can be installed using the following command:
Carry out the following steps to attach a volume to an instance using Nova Client:
The following output is generated:
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Attaching a cinder-volume is no different from plugging in a USB stick on your own computer—we attach it, (optionally) format it, and mount it.
Under Nova Client, the option volume-attach takes the following syntax:
nova volume-attach instance_id volume_id device
instance_ id is the ID returned from the nova list for the instance that we want to attach the volume to. The volume_id is the name of the device within the instance that we will use to mount the volume that can be retrieved using nova volume-list. This device is the device that will be created on our instance that we use to mount the volume.
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