bagaimana cara membuat playbook yang memungkinkan untuk mendapatkan versi OS dari host jarak jauh?

Gunakan salah satu ekspresi Jinja2 berikut:

{{ hostvars[inventory_hostname].ansible_distribution }}
{{ hostvars[inventory_hostname].ansible_distribution_major_version }}
{{ hostvars[inventory_hostname].ansible_distribution_version }}

di mana:

• hostvars dan ansible_... sudah terpasang dan dikumpulkan secara otomatis oleh Ansible
• ansible_distribution adalah host yang sedang diproses oleh Ansible

Misalnya, dengan asumsi Anda menjalankan peran Ansible test_role terhadap host host.example.com menjalankan distribusi CentOS 7:

---
- debug:
    msg: "{{ hostvars[inventory_hostname].ansible_distribution }}"
- debug:
    msg: "{{ hostvars[inventory_hostname].ansible_distribution_major_version }}"
- debug:
    msg: "{{ hostvars[inventory_hostname].ansible_distribution_version }}"

akan memberi Anda:

TASK [test_role : debug] *******************************************************
ok: [host.example.com] => {
    "msg": "CentOS"
}

TASK [test_role : debug] *******************************************************
ok: [host.example.com] => {
    "msg": "7"
}

TASK [test_role : debug] *******************************************************
ok: [host.example.com] => {
    "msg": "7.5.1804"
}

Secara terstruktur:

- hosts: all
  become: no
  vars:
    output_file: os.csv
  tasks:
    - block:
        # For permisison setup.
        - name: get current user
          command: whoami
          register: whoami
          run_once: yes

        - name: clean file
          copy:
            dest: "{{ output_file }}"
            content: 'hostname,distribution,version,release'
            owner: "{{ whoami.stdout }}"
          run_once: yes

        - name: fill os information
          lineinfile:
            path: "{{ output_file }}"
            line: "{{ ansible_hostname }},\
              {{ ansible_distribution }},\
              {{ ansible_distribution_version }},\
              {{ ansible_distribution_release }}"
          # Tries to prevent concurrent writes.
          throttle: 1
      delegate_to: localhost

Membuat file yang dipisahkan koma bernama os.csv dalam folder eksekusi. Anda dapat menggunakan variabel apa pun yang ingin Anda edit line: .