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 rbd.json rbd-with-secret.json. In the pod JSON, you need to provide the following information.
If Ceph authentication secret is provided, the secret should be first be base64 encoded, then encoded string is placed in a secret yaml. An example yaml is provided here. Then post the secret through kubectl
in the following command.
# kubectl create -f examples/rbd/secret/ceph-secret.yaml
Here are my commands:
# kubectl create -f examples/rbd/rbd.json
# kubectl get pods
On the Kubernetes host, I got these in mount output
#mount |grep kub
/dev/rbd0 on /var/lib/kubelet/plugins/kubernetes.io/rbd/rbd/kube-image-foo type ext4 (ro,relatime,stripe=4096,data=ordered)
/dev/rbd0 on /var/lib/kubelet/pods/ec2166b4-de07-11e4-aaf5-d4bed9b39058/volumes/kubernetes.io~rbd/rbdpd type ext4 (ro,relatime,stripe=4096,data=ordered)
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.