kubernetes mysql chown operation not permitted

Question

I am currently experimenting with Kubernetes and have installed a small cluster on ESX infra I had running here locally. I installed two slave nodes with a master node using Project Atomic with Fedora. The cluster is all installed fine and seems to be running. However I first want to get a MySQL container up and running, but no matter what I try i cannot get it to run.

apiVersion: v1
kind: Pod
metadata:
  name: mysql
  labels: 
    name: mysql
spec: 
  containers: 
    - resources:
       limits :
          cpu: 0.5
      image: mysql:5.6
      name: mysql
      env:
        - name: MYSQL_ROOT_PASSWORD
          value: myPassw0rd
      ports: 
        - containerPort: 3306
          name: mysql
      volumeMounts:
        - name: mysql-persistent-storage
          mountPath: /var/lib/mysql
  volumes:
    - name: mysql-persistent-storage
      nfs:
        server: 10.0.0.2
        path: "/export/mysql"

For the volume I already tried all kinds of solutions, I tried using persistent volume with and without claim. I tried using host volume and emptyDir, but I always end up with this error when the container starts:

chown: changing ownership of '/var/lib/mysql/': Operation not permitted

I must be doing something stupid, but no idea what to do here?

Answer 1

Ok it seems I can answer my own question, the problem was lying in the NFS share that was being used as the persistent volume. I had it set to 'squash_all' in the export but it needs to have a 'no_root_squash' to allow root in case of docker container to chown on the nfs bound volume.