Lab 14 - Creating a Volume via Rook

Goals

• Dynamically create a volume via Rook

Create a CephBlockPool and StorageClass

First we need a Ceph pool, and then a Kubernetes StorageClass.

kubectl apply -f https://raw.githubusercontent.com/packet-labs/Rook-on-Bare-Metal-Workshop/master/configs/cephblockpool.yaml
kubectl apply -f https://raw.githubusercontent.com/packet-labs/Rook-on-Bare-Metal-Workshop/master/configs/storageclass.yaml

Use kubectl describe -n rook-ceph CephBlockPools and kubectl describe -n rook-ceph StorageClass to inspect the configurations. Note that the pool is configured with 1 replica since it currently has only 1 OSD.

Then go in the toolbox container and verify that a ceph pool has been created:

ceph-toolbox# rados lspools

Create a PersistentVolume

kubectl apply -f https://raw.githubusercontent.com/packet-labs/Rook-on-Bare-Metal-Workshop/master/configs/pvc.yml

Then verify that your PersistentVolumeClaim has been created with kubectl get pvc --watch, and wait for the volume to go into Bound status.

Finally go in the toolbox container and verify that a RBD volume has been created:

ceph-toolbox# rbd ls -p replicapool

You can also verify in the Ceph dashboard that the newly created volume is visible

Next Steps

Once you’re done, proceed to Lab15