okd/roles/etcd/tasks/remove-etcd-v2-data.yml

---
- name: Verify cluster is healthy pre-upgrade
  command: "{{ etcdctlv2 }} cluster-health"

- name: Check migrated status
  command: "{{ etcdctlv2 }} get /kubernetes.io"
  register: etcdv2_migrated_status
  failed_when: ('stdout' not in etcdv2_migrated_status)

- block:
  - name: Remove etcdv2 kubernetes data
    command: "{{ etcdctlv2 }} rm -r /kubernetes.io"
    register: etcdv2_remove_k8s
    failed_when: ('Key not found' not in etcdv2_remove_k8s.stderr)

  - name: Remove etcdv2 openshift data
    command: "{{ etcdctlv2 }} rm -r /openshift.io"
    register: etcdv2_remove_openshift
    failed_when: ('Key not found' not in etcdv2_remove_openshift.stderr)

  - name: Set migrated mark
    command: "{{ etcdctlv2 }} set /kubernetes.io migrated"

  when: (etcdv2_migrated_status.stdout != 'migrated')