Update Ubuntu machines to Noble

upgrade-to-noble.yml

- hosts: all
  serial: 1
  gather_facts: true

  vars:
    target_release: noble

  tasks:

    - name: Skip hosts that are not ARM64 workers
      meta: end_host
      when: builder_pool != 'linux-arm64'

    - name: Check current Ubuntu release
      debug:
        msg: "Current release: {{ ansible_distribution_release }}"

    - name: Skip hosts already on Noble
      meta: end_host
      when: ansible_distribution_release == target_release

    - name: Check for held packages
      shell: apt-mark showhold
      become: true
      register: held_packages

    - name: Show held packages
      debug:
        var: held_packages.stdout_lines
      when: held_packages.stdout_lines | length > 0

    - name: Unhold all held packages
      shell: apt-mark unhold {{ held_packages.stdout_lines | join(' ') }}
      become: true
      when: held_packages.stdout_lines | length > 0

    - name: Full system update
      shell: |
        apt-get update
        DEBIAN_FRONTEND=noninteractive apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" dist-upgrade
        apt-get -y autoremove --purge
        apt-get -y install update-manager-core
      become: true

    - name: Check what updates remain
      shell: apt list --upgradable 2>/dev/null | grep -v "Listing..."
      become: true
      register: remaining_updates
      failed_when: false

    - name: Show remaining updates
      debug:
        var: remaining_updates.stdout_lines
      when: remaining_updates.stdout_lines | length > 0

    - name: Check if reboot is required after updates
      stat:
        path: /var/run/reboot-required
      register: reboot_required

    - name: Reboot if required after package updates
      reboot:
        reboot_timeout: 600
      become: true
      when: reboot_required.stat.exists

    - name: Wait for system to come back online after pre-upgrade reboot
      wait_for_connection:
        delay: 30
        timeout: 300
      when: reboot_required.stat.exists

    - name: Re-gather facts after potential reboot
      setup:
      when: reboot_required.stat.exists

    - name: Run do-release-upgrade
      shell: do-release-upgrade -f DistUpgradeViewNonInteractive
      become: true
      register: upgrade_result

    - name: Display upgrade output
      debug:
        var: upgrade_result.stdout_lines

    - name: Reboot the machine after upgrade
      reboot:
        reboot_timeout: 600
      become: true

    - name: Wait for system to come back online
      wait_for_connection:
        delay: 30
        timeout: 300

    - name: Gather facts after reboot
      setup:

    - name: Verify upgrade was successful
      assert:
        that:
          - ansible_distribution_release == target_release
        fail_msg: "Upgrade failed - system is on {{ ansible_distribution_release }} instead of {{ target_release }}"
        success_msg: "Successfully upgraded to Ubuntu {{ target_release }}"