Here's the YAML for the K8s namespace that's getting destroyed by this command:

apiVersion: v1
kind: Namespace
metadata:
  annotations:
    juju.io/controller: ...
    juju.io/model: ...
  creationTimestamp: "2019-08-07T21:07:11Z"
  name: kubeflow
  resourceVersion: "2208"
  selfLink: /api/v1/namespaces/kubeflow
  uid: ...
spec:
  finalizers:
  - kubernetes
status:
  phase: Active


Here's the output from `juju status`:

Model     Controller  Cloud/Region     Version  SLA          Timestamp       Notes
kubeflow  cdkkf       cdkkf/us-east-1  2.6.7    unsupported  16:26:02-05:00  attempt 31 to destroy model failed (will retry):  model not empty, found 2 volumes, 2 filesystems (model not empty)

Model "admin/kubeflow" is empty.


Here's the resources left in the namespace:

NAME                                                 STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS            AGE
persistentvolumeclaim/database-2ee3af8e-katib-db-0   Bound    pvc-2818d654-2ff9-4ef2-9ea3-7da578a1c178   1Gi        RWO            juju-operator-storage   14m
persistentvolumeclaim/database-d6c8b0ed-mariadb-0    Bound    pvc-225cd47c-e8a0-4ebb-93d6-e9eadd088dee   1Gi        RWO            juju-operator-storage   14m

NAME                                                        CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                                   STORAGECLASS            REASON   AGE
persistentvolume/pvc-225cd47c-e8a0-4ebb-93d6-e9eadd088dee   1Gi        RWO            Delete           Bound    kubeflow/database-d6c8b0ed-mariadb-0    juju-operator-storage            14m
persistentvolume/pvc-2818d654-2ff9-4ef2-9ea3-7da578a1c178   1Gi        RWO            Delete           Bound    kubeflow/database-2ee3af8e-katib-db-0   juju-operator-storage            14m


I tried deleting the PV/PVCs, which did not make the deletion process work, and didn't destroy the Juju storage resources:

storage:
  database/0:
    kind: filesystem
    life: alive
    status:
      current: detached
      since: 07 Aug 2019 16:18:17-05:00
    persistent: false
  database/1:
    kind: filesystem
    life: alive
    status:
      current: detached
      since: 07 Aug 2019 16:18:16-05:00
    persistent: false
filesystems:
  "0":
    provider-id: 2818d654-2ff9-4ef2-9ea3-7da578a1c178
    volume: "0"
    storage: database/0
    attachments: null
    pool: kubernetes
    size: 32
    life: alive
    status:
      current: detached
      since: 07 Aug 2019 16:18:17-05:00
  "1":
    provider-id: 225cd47c-e8a0-4ebb-93d6-e9eadd088dee
    volume: "1"
    storage: database/1
    attachments: null
    pool: kubernetes
    size: 31
    life: alive
    status:
      current: detached
      since: 07 Aug 2019 16:18:16-05:00
volumes:
  "0":
    provider-id: pvc-2818d654-2ff9-4ef2-9ea3-7da578a1c178
    storage: database/0
    pool: kubernetes
    size: 856
    persistent: false
    life: alive
    status:
      current: detached
      since: 07 Aug 2019 16:18:17-05:00
  "1":
    provider-id: pvc-225cd47c-e8a0-4ebb-93d6-e9eadd088dee
    storage: database/1
    pool: kubernetes
    size: 855
    persistent: false
    life: alive
    status:
      current: detached
      since: 07 Aug 2019 16:18:16-05:00