okd/roles/etcd/tasks/upgrade/upgrade_image.yml

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

- name: Get current image
  shell: "grep 'ExecStart=' {{ etcd_service_file }} | awk '{print $NF}'"
  register: current_image

- name: Set new_etcd_image
  set_fact:
    new_etcd_image: "{{ current_image.stdout | regex_replace('/etcd.*$','/etcd:' ~ r_etcd_upgrade_version ) }}"

- name: Pull new etcd image
  command: "docker pull {{ new_etcd_image }}"

- name: Update to latest etcd image
  replace:
    dest: "{{ etcd_service_file }}"
    regexp: "{{ current_image.stdout }}$"
    replace: "{{ new_etcd_image }}"

- import_tasks: validate_etcd_conf.yml

- name: restart etcd
  command: /usr/local/bin/master-restart etcd

- name: Verify cluster is healthy
  command: "{{ etcdctlv2 }} cluster-health"
  register: etcdctl
  until: etcdctl.rc == 0
  retries: 3
  delay: 10