kubespray/roles/etcd/tasks/pre_upgrade.yml

- name: "Pre-upgrade | check for etcd-proxy unit file"
  stat:
    path: /etc/systemd/system/etcd-proxy.service
  register: etcd_proxy_service_file
  tags: facts

- name: "Pre-upgrade | check for etcd-proxy init script"
  stat:
    path: /etc/init.d/etcd-proxy
  register: etcd_proxy_init_script
  tags: facts

- name: "Pre-upgrade | stop etcd-proxy if service defined"
  service:
    name: etcd-proxy
    state: stopped
  when: (etcd_proxy_service_file.stat.exists|default(False) or etcd_proxy_init_script.stat.exists|default(False))

- name: "Pre-upgrade | remove etcd-proxy service definition"
  file:
    path: "{{ item }}"
    state: absent
  when: (etcd_proxy_service_file.stat.exists|default(False) or etcd_proxy_init_script.stat.exists|default(False))
  with_items:
    - /etc/systemd/system/etcd-proxy.service
    - /etc/init.d/etcd-proxy

- name: "Pre-upgrade | find etcd-proxy container"
  command: docker ps -aq --filter "name=etcd-proxy*"
  register: etcd_proxy_container
  failed_when: false

- name: "Pre-upgrade | remove etcd-proxy if it exists"
  command: "docker rm -f {{item}}"
  with_items: "{{etcd_proxy_container.stdout_lines}}"

- name: "Pre-upgrade | check if member list is non-SSL"
  command: "{{ bin_dir }}/etcdctl --no-sync --peers={{ etcd_access_addresses | regex_replace('https','http') }} member list"
  register: etcd_member_list
  retries: 10
  delay: 3
  until: etcd_member_list.rc != 2
  run_once: true
  failed_when: false

- name: "Pre-upgrade | change peer names to SSL"
  shell: >-
    {{ bin_dir }}/etcdctl --no-sync --peers={{ etcd_access_addresses | regex_replace('https','http') }} member list |
    awk -F"[: =]" '{print "{{ bin_dir }}/etcdctl --peers={{ etcd_access_addresses | regex_replace('https','http') }} member update "$1" https:"$7":"$8}' | bash
  run_once: true
  when: 'etcd_member_list.rc == 0 and "http://" in etcd_member_list.stdout'