pro-upgrade.yml

---
# This is a special playbook intended to allow you to automatically upgrade
# from MooseFS CE to MooseFS PRO.
# Status: EARLY DEVELOPMENT
- name: Preparation phase
  hosts: moosefs
  become: true

  vars:
    moosefs_pro_licenced: false

  vars_files:
    - "vars/moosefs-settings.yml"
    - "vars/upgrade-settings.yml"

  pre_tasks:
    # TODO: Move this check to use mfscli -v instead
    - name: Check MooseFS version
      shell:
        cmd: "mfscli -SIG -H {{ moosefs_master_host }} -p -s ' ' | grep 'master version' | cut -d' ' -f5"
      register: moosefs_version_detected
      changed_when: false

    - name: Check if MooseFS version is within range for upgrade
      ansible.builtin.assert:
        that:
          - "{{ moosefs_version_detected.stdout is version('3.0', '>=') }}"
          - "{{ moosefs_version_detected.stdout is version('4.0', '<') }}"
        fail_msg: "MooseFS version is out of range or unknown. Please ask for help."
        success_msg: "MooseFS version detected appears valid for upgrade."
      when: inventory_hostname == ansible_play_hosts[0]

    - name: Check that MooseFS Pro is enabled and that we're using official packages
      ansible.builtin.assert:
        that:
          - moosefs_pro == true
          - moosefs_install_method == "official"
        fail_msg: "Please enable MooseFS Pro in vars/moosefs-settings.yml and ensure install method is set to 'official'."
        success_msg: "MooseFS Pro is enabled and the official installation method is selected."

    - name: Check that we have a licence and that it is of non-zero length.
      set_fact:
        moosefs_pro_licenced: true
      when: "((playbook_dir,  'mfslicence.bin') | path_join) is file"

    - name: Fail if unlicenced
      ansible.builtin.assert:
        that:
          - moosefs_pro_licenced == true
        fail_msg: "You don't appear to have a MooseFS Pro licence. Please place one in the root of the playbook and try again."
        success_msg: "You appear to have a MooseFS Pro licence file. Continuing!"
      when: inventory_hostname == ansible_play_hosts[0]

    - name: Check the state of the chunk matrix
      command: mfscli -SIC -H {{ moosefs_master_host }} -p -s ' '
      register: moosefs_chunks_status
      check_mode: false
      changed_when: false
      when: inventory_hostname == ansible_play_hosts[0]

    - name: Check the version of the chunkservers
      shell: "mfscli -SCS -H {{ moosefs_master_host }} -p -s ' ' | cut -d' ' -f7"
      register: moosefs_chunkserver_status
      check_mode: false
      changed_when: false
      when: inventory_hostname == ansible_play_hosts[0]

    - name: Check chunkserver's MooseFS version is within range for upgrade
      ansible.builtin.assert:
        that:
          - "{{ item is version('3.0', '>=') }}"
          - "{{ item is version('4.0', '<') }}"
      loop: "{{ moosefs_chunkserver_status.stdout.splitlines() }}"
      when: inventory_hostname == ansible_play_hosts[0]

    - name: Determine the current state of the chunk matrix
      set_fact:
        moosefs_chunks_missing: "{{ moosefs_chunks_status.stdout_lines | select('search', 'chunkclass missing:') | select('search', ': 0') | length == 0 }}"
        moosefs_chunks_endangered: "{{ moosefs_chunks_status.stdout_lines | select('search', 'chunkclass endangered:') | select('search', ': 0') | length == 0 }}"
        moosefs_chunks_undergoal: "{{ moosefs_chunks_status.stdout_lines | select('search', 'chunkclass undergoal:') | select('search', ': 0') | length == 0 }}"
      when: inventory_hostname == ansible_play_hosts[0]

    - name: Print the current state of the chunk matrix
      debug:
        msg:
          - "Chunks missing? {{ moosefs_chunks_missing }}"
          - "Chunks endangered? {{ moosefs_chunks_endangered }}"
          - "Chunks undergoal? {{ moosefs_chunks_undergoal }}"
      when: inventory_hostname == ansible_play_hosts[0]

  tasks:
    - name: Check if MooseFS appears to have been installed using source method
      stat:
        path: /usr/local/src/moosefs-{{ moosefs_version_detected.stdout }}/moosefs-{{ moosefs_version_detected.stdout }}
      register: moosefs_source_installed

    - name: Uninstall MooseFS (source)
      command:
        cmd: make uninstall
        chdir: /usr/local/src/moosefs-{{ moosefs_version_detected.stdout }}/moosefs-{{ moosefs_version_detected.stdout }}
      when: moosefs_source_installed.stat.exists

    - name: Uninstall MooseFS (official/package)
      package:
        name:
          - moosefs-master
          - moosefs-metalogger
          - moosefs-chunkserver
          - moosefs-client
          - moosefs-cli
          - moosefs-cgi
          - moosefs-cgiserv
        state: absent

- name: Install new MooseFS binaries
  import_playbook: site.yml
  vars:
    moosefs_upgrade: true

- name: Restart metaloggers
  import_playbook: rolling-metalogger.yml
  vars:
    moosefs_upgrade: true

# We upgrade the chunkservers *before* the master... to allow the chunkservers to
# elect a leader.
- name: Restart chunkservers
  import_playbook: rolling-chunkserver.yml
  vars:
    moosefs_upgrade: true

- name: Restart masters
  import_playbook: rolling-master.yml
  vars:
    moosefs_upgrade: true
    moosefs_ce_to_pro_upgrade: true

- name: Restart clients
  import_playbook: rolling-clients.yml