# To create an Ansible playbook that checks if qemu-guest-agent is installed, and if not, installs it, you can use the ansible.builtin.package module, which can manage packages across various types of package managers.

# Below is a simple playbook that accomplishes this:

#_________________________________________________________________________________________
---
- name: Check and Install qemu-guest-agent
  hosts: all
  become: yes  # Use this if you need elevated privileges to install packages
  tasks:
    - name: Check if qemu-guest-agent is installed
      ansible.builtin.package_facts:

    - name: update apt cache
      command: apt update

    - name: upgrade all packages
      command: apt upgrade -y

    - name: Install qemu-guest-agent if not installed
      ansible.builtin.package:
        name: qemu-guest-agent
        state: present
      when: "'qemu-guest-agent' not in ansible_facts.packages"

#___________________________________________________________________________________________

# Explanation:
#
#    hosts: all - This playbook will run on all hosts in your inventory.
#    become: yes - This allows the tasks to run with elevated privileges (root), which is often required for installing packages.
#    package_facts - This module gathers facts about installed packages on the target machine and stores them in ansible_facts.
#    package - This module installs the specified package. The state: present ensures the package is installed.
#    when condition - The when clause checks if qemu-guest-agent is present in the ansible_facts.packages. If it’s not installed, the package will be installed.

# Usage

#    Save the above YAML content to a file, for instance, install_qemu_guest_agent.yml.

#    Run the playbook using the following command:

#                 COMMAND TO RUN:  ansible-playbook -i your_inventory_file install_qemu_guest_agent.yml

# Replace your_inventory_file with the path to your Ansible inventory file that defines your target hosts.

# This playbook should effectively install the qemu-guest-agent on any host where it is not already installed.