How to Use it?

Install Ceph on the Kubernetes host. For example, on Fedora 21

# yum -y install ceph

If you don't have a Ceph cluster, you can set up a containerized Ceph cluster

Then get the keyring from the Ceph cluster and copy it to /etc/ceph/keyring.

Once you have installed Ceph and new Kubernetes, you can create a pod based on my examples cephfs.json and cephfs-with-secret.json. In the pod JSON, you need to provide the following information.

• monitors: Array of Ceph monitors.
• user: The RADOS user name. If not provided, default admin is used.
• secretFile: The path to the keyring file. If not provided, default /etc/ceph/user.secret is used.
• secretRef: Reference to Ceph authentication secrets. If provided, secret overrides secretFile.
• readOnly: Whether the filesystem is used as readOnly.

Here are the commands:

# create a secret if you want to use Ceph secret instead of secret file
    # cluster/kubectl.sh create -f examples/cephfs/secret/ceph-secret.yaml
   
    # cluster/kubectl.sh create -f examples/cephfs/v1beta3/cephfs.json
    # cluster/kubectl.sh get pods

If you ssh to that machine, you can run docker ps to see the actual pod and docker inspect to see the volumes used by the container.