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Ansible | debug モジュール

Ansible の debug モジュールでデバッグ表示を試してみた。

オプション

引数 デフォルト 値 備考
msg Hello world! 出力用のカスタマイズされたメッセージ。省略時、汎用的なメッセージが出力される。
var デバッグする変数名。msg引数とお互いに排他的である。

msg オプション

設定

playbook.yml

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- hosts: test-hosts
  become: true
  tasks:
    - debug:
        msg: "System {{ inventory_hostname }} has uuid {{ ansible_product_uuid }}"

実行

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$ ansible-playbook -i hosts playbook.yml -K
SUDO password:

PLAY [test-hosts] **************************************************************

TASK [setup] *******************************************************************
ok: [192.168.1.201]

TASK [debug] *******************************************************************
ok: [192.168.1.201] => {
    "msg": "System 192.168.1.201 has uuid 4C4C4544-0032-5A10-8046-C6C04F594258"
}

PLAY RECAP *********************************************************************
192.168.1.201              : ok=2    changed=0    unreachable=0    failed=0

var オプション

設定

playboo.yml

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- hosts: test-hosts
  become: true
  tasks:
    - shell: /usr/bin/uptime
      register: result

    - debug: var=result

    - name: Display all variables/facts known for a host
      debug: var=hostvars[inventory_hostname]

実行

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$ vi playbook.yml

$ ansible-playbook -i hosts playbook.yml -K
SUDO password:

PLAY [test-hosts] **************************************************************

TASK [setup] *******************************************************************
ok: [192.168.1.201]

TASK [command] *****************************************************************
changed: [192.168.1.201]

TASK [debug] *******************************************************************
ok: [192.168.1.201] => {
    "result": {
        "changed": true,
        "cmd": "/usr/bin/uptime",
        "delta": "0:00:00.004671",
        "end": "2020-06-11 18:52:23.186351",
        "rc": 0,
        "start": "2020-06-11 18:52:23.181680",
        "stderr": "",
        "stdout": " 18:52:23 up 126 days,  5:40,  2 users,  load average: 0.48, 0.51, 0.68",
        "stdout_lines": [
            " 18:52:23 up 126 days,  5:40,  2 users,  load average: 0.48, 0.51, 0.68"
        ],
        "warnings": []
    }
}

TASK [Display all variables/facts known for a host] ****************************
ok: [192.168.1.201] => {
    "hostvars[inventory_hostname]": {
        "ansible_all_ipv4_addresses": [
            "192.168.1.201",
            "172.17.0.1",
            "172.23.0.1",
            "172.18.0.1"
        ],
        "ansible_all_ipv6_addresses": [
...
         "result": {
            "changed": true,
            "cmd": "/usr/bin/uptime",
            "delta": "0:00:00.004671",
            "end": "2020-06-11 18:52:23.186351",
            "rc": 0,
            "start": "2020-06-11 18:52:23.181680",
            "stderr": "",
            "stdout": " 18:52:23 up 126 days,  5:40,  2 users,  load average: 0.48, 0.51, 0.68",
            "stdout_lines": [
                " 18:52:23 up 126 days,  5:40,  2 users,  load average: 0.48, 0.51, 0.68"
            ],
            "warnings": []
        }
    }
}

PLAY RECAP *********************************************************************
192.168.1.201              : ok=4    changed=1    unreachable=0    failed=0