update.yml

- hosts:
    - all:!nhen-sg1.az
  become: true
  tasks:
    - name: set restart_server variable
      set_fact:
        restart_server: "true"

    - name: update apt packages
      apt:
        upgrade: safe
        update_cache: yes

    - name: check if reboot is required
      stat:
        path: /var/run/reboot-required
      register: reboot_required

    - name: reboot if required
      reboot:
        reboot_timeout: 600
        connect_timeout: 5
        msg: "Reboot initiated by Ansible for kernel update"
        post_reboot_delay: 30
        pre_reboot_delay: 30
        test_command: uptime
      when: reboot_required.stat.exists and restart_server == true

    - name: reboot required?
      debug:
        msg: "Reboot required for host {{ inventory_hostname }}"
      when: reboot_required.stat.exists