Rbd tips

How to access Pods externally¶

http://alesnosek.com/blog/2017/02/14/accessing-kubernetes-pods-from-outside-of-the-cluster/

Disable some RBD features (or k8s will fail to launch pod)¶

fast-diff
object-map
deep-flatten

must all be disabled

rbd feature disable ssd/elasticsearch-data-01 fast-diff object-map deep-flatten

RBD inside kubernetes¶

https://github.com/kubernetes/examples/tree/master/staging/volumes/rbd

Spent some time toying around with it but couldn’t get it to work - it is a must to add the secret as described here and also add that part to the manifest:

            user: admin
            keyring: /etc/ceph/ceph.client.admin.keyring
            secretRef:
              name: ceph-secret

Link to example rbd manifest: https://github.com/kubernetes/examples/blob/master/staging/volumes/rbd/rbd.yaml