kubespray/roles/network_plugin/flannel/handlers/main.yml

---
- name: Flannel | delete default docker bridge
  command: ip link delete docker0
  ignore_errors: yes
  notify: Flannel | restart docker

- name: Flannel | restart docker
  command: /bin/true
  notify:
    - Flannel | reload systemd
    - Flannel | reload docker.socket
    - Flannel | reload docker
    - Flannel | pause while Docker restarts
    - Flannel | wait for docker

- name : Flannel | reload systemd
  shell: systemctl daemon-reload
  when: ansible_service_mgr == "systemd"

- name: Flannel | reload docker.socket
  service:
    name: docker.socket
    state: restarted
  when: ansible_os_family == 'CoreOS'

- name: Flannel | reload docker
  service:
    name: docker
    state: restarted

- name: Flannel | pause while Docker restarts
  pause: seconds=10 prompt="Waiting for docker restart"

- name: Flannel | wait for docker
  command: /usr/bin/docker images
  register: docker_ready
  retries: 10
  delay: 5
  until: docker_ready.rc == 0

- name: Flannel | reload kubelet
  service:
    name: kubelet
    state: restarted