okd/playbooks/common/openshift-master/restart.yml

---
- include: ../openshift-cluster/evaluate_groups.yml

- name: Validate configuration for rolling restart
  hosts: oo_masters_to_config
  roles:
  - openshift_facts
  tasks:
  - fail:
      msg: "openshift_rolling_restart_mode must be set to either 'services' or 'system'"
    when: openshift_rolling_restart_mode is defined and openshift_rolling_restart_mode not in ["services", "system"]
  - openshift_facts:
      role: "{{ item.role }}"
      local_facts: "{{ item.local_facts }}"
    with_items:
      - role: common
        local_facts:
          rolling_restart_mode: "{{ openshift_rolling_restart_mode | default('services') }}"
      - role: master
        local_facts:
          cluster_method: "{{ openshift_master_cluster_method | default(None) }}"

# Creating a temp file on localhost, we then check each system that will
# be rebooted to see if that file exists, if so we know we're running
# ansible on a machine that needs a reboot, and we need to error out.
- name: Create temp file on localhost
  hosts: localhost
  connection: local
  become: no
  gather_facts: no
  tasks:
  - local_action: command mktemp
    register: mktemp
    changed_when: false

- name: Check if temp file exists on any masters
  hosts: oo_masters_to_config
  tasks:
  - stat: path="{{ hostvars.localhost.mktemp.stdout }}"
    register: exists
    changed_when: false

- name: Cleanup temp file on localhost
  hosts: localhost
  connection: local
  become: no
  gather_facts: no
  tasks:
  - file: path="{{ hostvars.localhost.mktemp.stdout }}" state=absent
    changed_when: false

- name: Warn if restarting the system where ansible is running
  hosts: oo_masters_to_config
  tasks:
  - pause:
      prompt: >
        Warning: Running playbook from a host that will be restarted!
        Press CTRL+C and A to abort playbook execution. You may
        continue by pressing ENTER but the playbook will stop
        executing once this system restarts and services must be
        manually verified.
    when: exists.stat.exists and openshift.common.rolling_restart_mode == 'system'
  - set_fact:
      current_host: "{{ exists.stat.exists }}"
    when: openshift.common.rolling_restart_mode == 'system'

- name: Determine which masters are currently active
  hosts: oo_masters_to_config
  tasks:
  - name: Check master service status
    command: >
      systemctl is-active {{ openshift.common.service_type }}-master
    register: active_check_output
    when: openshift.master.cluster_method == 'pacemaker'
    failed_when: active_check_output.stdout not in ['active', 'inactive']
    changed_when: false
  - set_fact:
      is_active: "{{ active_check_output.stdout == 'active' }}"
    when: openshift.master.cluster_method == 'pacemaker'

- name: Evaluate master groups
  hosts: localhost
  become: no
  tasks:
  - name: Evaluate oo_active_masters
    add_host:
      name: "{{ item }}"
      groups: oo_active_masters
      ansible_ssh_user: "{{ g_ssh_user | default(omit) }}"
      ansible_sudo: "{{ g_sudo | default(omit) }}"
    with_items: "{{ groups.oo_masters_to_config | default([]) }}"
    when: (hostvars[item]['is_active'] | default(false)) | bool
  - name: Evaluate oo_current_masters
    add_host:
      name: "{{ item }}"
      groups: oo_current_masters
      ansible_ssh_user: "{{ g_ssh_user | default(omit) }}"
      ansible_sudo: "{{ g_sudo | default(omit) }}"
    with_items: "{{ groups.oo_masters_to_config | default([]) }}"
    when: (hostvars[item]['current_host'] | default(false)) | bool

- name: Validate pacemaker cluster
  hosts: oo_active_masters
  tasks:
  - name: Retrieve pcs status
    command: pcs status
    register: pcs_status_output
    changed_when: false
  - fail:
      msg: >
        Pacemaker cluster validation failed. One or more nodes are not online.
    when: not (pcs_status_output.stdout | validate_pcs_cluster(groups.oo_masters_to_config)) | bool

- name: Restart masters
  hosts: oo_masters_to_config:!oo_active_masters:!oo_current_masters
  vars:
    openshift_master_ha: "{{ groups.oo_masters_to_config | length > 1 }}"
  serial: 1
  tasks:
  - include: restart_hosts.yml
    when: openshift.common.rolling_restart_mode == 'system'
  - include: restart_services.yml
    when: openshift.common.rolling_restart_mode == 'services'

- name: Restart active masters
  hosts: oo_active_masters
  serial: 1
  tasks:
  - include: restart_hosts_pacemaker.yml
    when: openshift.common.rolling_restart_mode == 'system'
  - include: restart_services_pacemaker.yml
    when: openshift.common.rolling_restart_mode == 'services'

- name: Restart current masters
  hosts: oo_current_masters
  serial: 1
  tasks:
  - include: restart_hosts.yml
    when: openshift.common.rolling_restart_mode == 'system'
  - include: restart_services.yml
    when: openshift.common.rolling_restart_mode == 'services'