k3s/examples/mysql-wordpress-pd/mysql.yaml

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
          # change this
          value: yourpassword
      ports: 
        - containerPort: 3306
          name: mysql
      volumeMounts:
          # name must match the volume name below
        - name: mysql-persistent-storage
          # mount path within the container
          mountPath: /var/lib/mysql
  volumes:
    - name: mysql-persistent-storage
      gcePersistentDisk:
        # This GCE PD must already exist.
        pdName: mysql-disk
        fsType: ext4