Ceph: Let’s delete everything, Part 2

Deleting Ceph File Systems

We deployed a Ceph cluster and created file systems. Those steps are described in these two articles.

• Ceph Cluster Deploy
• Ceph FileSystem Basics & Kubernetes

Roughly speaking, we will reverse what we did in the second article.

Disconnecting Clients

As shown below, the Ceph dashboard shows list of connected clients for each file system. We have two clients: one for Linux mount and one for Kubernetes. We can disconnect clients using clicking Evict button.

Ceph Dashboard: File System Linux Client

Ceph Dashboard: File System Kubernetes Client

Here, we will connect from client sides. For Linux mount, we just unmount the ceph fs system.

sudo umount /mnt/ceph-fs

The client from the Kubernetes cluster is a pod. We delete the pod using kubectl command.

kubectl delete pod test-pod-with-fs-pvc

We created a storage class that is connected to cephfs-k8s file system. So we will also delete the storage class.