kubespray/roles/kubernetes/master/handlers/main.yml

---
- name: Master | restart kubelet
  command: /bin/true
  notify:
    - Master | reload systemd
    - Master | reload kubelet
    - Master | wait for master static pods

- name: Master | wait for master static pods
  command: /bin/true
  notify:
    - Master | wait for the apiserver to be running
    - Master | wait for kube-scheduler
    - Master | wait for kube-controller-manager

- name: Master | reload systemd
  command: systemctl daemon-reload
  when: ansible_service_mgr == "systemd"

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

- name: Master | wait for kube-scheduler
  uri: url=http://localhost:10251/healthz
  register: scheduler_result
  until: scheduler_result.status == 200
  retries: 15
  delay: 5

- name: Master | wait for kube-controller-manager
  uri: url=http://localhost:10252/healthz
  register: controller_manager_result
  until: controller_manager_result.status == 200
  retries: 15
  delay: 5

- name: Master | wait for the apiserver to be running
  uri: url=http://localhost:8080/healthz
  register: result
  until: result.status == 200
  retries: 10
  delay: 6