PostrgreSQL running in kubernetes on google cloud with persistent disk

postgres.yaml

#
# PostgreSQL master for cohort demo application.
#
# gcloud compute disks create --size=200GB --zone=us-central1-c cohort-pg-master-data-disk
#
apiVersion: v1
kind: ReplicationController
metadata:
  name: cohort-postgres
  labels:
    name: cohort-postgres
spec:
  replicas: 1
  selector:
    name: cohort-postgres
  template:
    metadata:
      labels:
        name: cohort-postgres
    spec:
      containers:
        - resources:
            limits :
              cpu: 0.1
          image: postgres
          name: postgres
          env:
            - name: DB_PASS
              # change this
              value: XXXX
          ports:
            - name: postgres
              containerPort: 5432
              hostPort: 5432
          volumeMounts:
              # name must match the volume name below
            - name: postgres-persistent-storage
              # mount path within the container
              mountPath: /var/lib/postgresql
      volumes:
        - name: postgres-persistent-storage
          gcePersistentDisk:
            # This GCE PD must already exist.
            pdName: cohort-pg-master-data-disk
            fsType: ext4