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

---
- name: Preinstall | propagate resolvconf to k8s components
  command: /bin/true
  notify:
    - Preinstall | reload kubelet
    - Preinstall | kube-controller configured
    - Preinstall | kube-apiserver configured
    - Preinstall | restart kube-controller-manager docker
    - Preinstall | restart kube-controller-manager crio/containerd
    - Preinstall | restart kube-apiserver docker
    - Preinstall | restart kube-apiserver crio/containerd
    - Preinstall | wait for the apiserver to be running
  when: not ansible_os_family in ["Flatcar", "Flatcar Container Linux by Kinvolk"] and not is_fedora_coreos

- name: Preinstall | update resolvconf for Flatcar Container Linux by Kinvolk
  command: /bin/true
  notify:
    - Preinstall | apply resolvconf cloud-init
    - Preinstall | reload kubelet
  when: ansible_os_family in ["Flatcar", "Flatcar Container Linux by Kinvolk"]

- name: Preinstall | apply resolvconf cloud-init
  command: /usr/bin/coreos-cloudinit --from-file {{ resolveconf_cloud_init_conf }}
  when: ansible_os_family in ["Flatcar", "Flatcar Container Linux by Kinvolk"]

- name: Preinstall | update resolvconf for networkmanager
  command: /bin/true
  notify:
    - Preinstall | reload NetworkManager
    - Preinstall | reload kubelet

- name: Preinstall | reload NetworkManager
  service:
    name: NetworkManager.service
    state: restarted

- name: Preinstall | reload kubelet
  service:
    name: kubelet
    state: restarted
  notify:
    - Preinstall | kube-controller configured
    - Preinstall | kube-apiserver configured
    - Preinstall | restart kube-controller-manager docker
    - Preinstall | restart kube-controller-manager crio/containerd
    - Preinstall | restart kube-apiserver docker
    - Preinstall | restart kube-apiserver crio/containerd
  when: not dns_early|bool

# FIXME(mattymo): Also restart for kubeadm mode
- name: Preinstall | kube-apiserver configured
  stat:
    path: "{{ kube_manifest_dir }}/kube-apiserver.yaml"
    get_attributes: no
    get_checksum: no
    get_mime: no
  register: kube_apiserver_set
  when: inventory_hostname in groups['kube_control_plane'] and dns_mode != 'none' and resolvconf_mode == 'host_resolvconf'

# FIXME(mattymo): Also restart for kubeadm mode
- name: Preinstall | kube-controller configured
  stat:
    path: "{{ kube_manifest_dir }}/kube-controller-manager.yaml"
    get_attributes: no
    get_checksum: no
    get_mime: no
  register: kube_controller_set
  when: inventory_hostname in groups['kube_control_plane'] and dns_mode != 'none' and resolvconf_mode == 'host_resolvconf'

- name: Preinstall | restart kube-controller-manager docker
  shell: "{{ docker_bin_dir }}/docker ps -f name=k8s_POD_kube-controller-manager* -q | xargs --no-run-if-empty {{ docker_bin_dir }}/docker rm -f"
  when:
    - container_manager == "docker"
    - inventory_hostname in groups['kube_control_plane']
    - dns_mode != 'none'
    - resolvconf_mode == 'host_resolvconf'
    - kube_controller_set.stat.exists

- name: Preinstall | restart kube-controller-manager crio/containerd
  shell: "{{ bin_dir }}/crictl pods --name kube-controller-manager* -q | xargs -I% --no-run-if-empty bash -c '{{ bin_dir }}/crictl stopp % && {{ bin_dir }}/crictl rmp %'"
  when:
    - container_manager in ['crio', 'containerd']
    - inventory_hostname in groups['kube_control_plane']
    - dns_mode != 'none'
    - resolvconf_mode == 'host_resolvconf'
    - kube_controller_set.stat.exists

- name: Preinstall | restart kube-apiserver docker
  shell: "{{ docker_bin_dir }}/docker ps -f name=k8s_POD_kube-apiserver* -q | xargs --no-run-if-empty {{ docker_bin_dir }}/docker rm -f"
  when:
    - container_manager == "docker"
    - inventory_hostname in groups['kube_control_plane']
    - dns_mode != 'none'
    - resolvconf_mode == 'host_resolvconf'
    - kube_apiserver_set.stat.exists

- name: Preinstall | restart kube-apiserver crio/containerd
  shell: "{{ bin_dir }}/crictl pods --name kube-apiserver* -q | xargs -I% --no-run-if-empty bash -c '{{ bin_dir }}/crictl stopp % && {{ bin_dir }}/crictl rmp %'"
  register: preinstall_restart_apiserver
  retries: 10
  until: preinstall_restart_apiserver.rc == 0
  delay: 1
  when:
    - container_manager in ['crio', 'containerd']
    - inventory_hostname in groups['kube_control_plane']
    - dns_mode != 'none'
    - resolvconf_mode == 'host_resolvconf'
    - kube_apiserver_set.stat.exists

# When running this as the last phase ensure we wait for kube-apiserver to come up
- name: Preinstall | wait for the apiserver to be running
  uri:
    url: "{{ kube_apiserver_endpoint }}/healthz"
    validate_certs: no
  register: result
  until: result.status == 200
  retries: 60
  delay: 1
  when:
    - dns_late
    - inventory_hostname in groups['kube_control_plane']
    - dns_mode != 'none'
    - resolvconf_mode == 'host_resolvconf'

- name: Preinstall | Restart systemd-resolved
  service:
    name: systemd-resolved
    state: restarted

- name: Preinstall | restart ntp
  service:
    name: "{{ ntp_service_name }}"
    state: restarted
  when: ntp_enabled