Псевдонимы

Цитируя Псевдонимы инвентаризации:

inventory_hostname — это уникальный идентификатор узла в Ansible. Это может быть IP-адрес или имя хоста, а также просто «псевдоним» или краткое имя узла.

На хосте iocage от имени root остановите и уничтожьте все jail:

shell> iocage stop ALL
* Stopping srv_1
  + Executing prestop OK
  + Stopping services OK
  + Tearing down VNET OK
  + Removing devfs_ruleset: 1000 OK
  + Removing jail process OK
  + Executing poststop OK
* Stopping srv_2
  + Executing prestop OK
  + Stopping services OK
  + Tearing down VNET OK
  + Removing devfs_ruleset: 1001 OK
  + Removing jail process OK
  + Executing poststop OK
* Stopping srv_3
  + Executing prestop OK
  + Stopping services OK
  + Tearing down VNET OK
  + Removing devfs_ruleset: 1002 OK
  + Removing jail process OK
  + Executing poststop OK
ansible_client is not running!

shell> iocage destroy -f srv_1 srv_2 srv_3
Destroying srv_1
Destroying srv_2
Destroying srv_3

Создайте три jail VNET с интерфейсом DHCP на основе шаблона ansible_client. Используйте параметр --count:

shell> iocage create --short --template ansible_client --count 3 bpf=1 dhcp=1 vnet=1
1c11de2d successfully created!
9d94cc9e successfully created!
052b9557 successfully created!

Имена будут случайными. Запустите jail:

shell> iocage start ALL
No default gateway found for ipv6.
* Starting 052b9557
  + Started OK
  + Using devfs_ruleset: 1000 (iocage generated default)
  + Configuring VNET OK
  + Using IP options: vnet
  + Starting services OK
  + Executing poststart OK
  + DHCP Address: 10.1.0.137/24
No default gateway found for ipv6.
* Starting 1c11de2d
  + Started OK
  + Using devfs_ruleset: 1001 (iocage generated default)
  + Configuring VNET OK
  + Using IP options: vnet
  + Starting services OK
  + Executing poststart OK
  + DHCP Address: 10.1.0.146/24
No default gateway found for ipv6.
* Starting 9d94cc9e
  + Started OK
  + Using devfs_ruleset: 1002 (iocage generated default)
  + Configuring VNET OK
  + Using IP options: vnet
  + Starting services OK
  + Executing poststart OK
  + DHCP Address: 10.1.0.115/24
Please convert back to a jail before trying to start ansible_client

Выведите список jail:

shell> iocage list -l
+-----+----------+------+-------+------+-----------------+--------------------+-----+----------------+----------+
| JID |   NAME   | BOOT | STATE | TYPE |     RELEASE     |        IP4         | IP6 |    TEMPLATE    | BASEJAIL |
+=====+==========+======+=======+======+=================+====================+=====+================+==========+
| 207 | 052b9557 | off  | up    | jail | 14.2-RELEASE-p3 | epair0b|10.1.0.137 | -   | ansible_client | no       |
+-----+----------+------+-------+------+-----------------+--------------------+-----+----------------+----------+
| 208 | 1c11de2d | off  | up    | jail | 14.2-RELEASE-p3 | epair0b|10.1.0.146 | -   | ansible_client | no       |
+-----+----------+------+-------+------+-----------------+--------------------+-----+----------------+----------+
| 209 | 9d94cc9e | off  | up    | jail | 14.2-RELEASE-p3 | epair0b|10.1.0.115 | -   | ansible_client | no       |
+-----+----------+------+-------+------+-----------------+--------------------+-----+----------------+----------+

Задайте примечания. Тег alias будет использоваться для создания псевдонимов инвентаризации:

shell> iocage set notes="vmm=iocage_02 project=foo alias=srv_1" 052b9557
notes: none -> vmm=iocage_02 project=foo alias=srv_1
shell> iocage set notes="vmm=iocage_02 project=foo alias=srv_2" 1c11de2d
notes: none -> vmm=iocage_02 project=foo alias=srv_2
shell> iocage set notes="vmm=iocage_02 project=bar alias=srv_3" 9d94cc9e
notes: none -> vmm=iocage_02 project=bar alias=srv_3

Обновите конфигурацию инвентаризации. Установите для параметра inventory_hostname_tag значение alias. Этот тег сохраняет значение псевдонима. Параметр get_properties должен быть включен. Например, файл hosts/02_iocage.yml содержит:

plugin: community.general.iocage
host: 10.1.0.73
user: admin
get_properties: true
inventory_hostname_tag: alias
hooks_results:
  - /var/db/dhclient-hook.address.epair0b
compose:
  ansible_host: (iocage_hooks.0 == '-') | ternary(iocage_ip4, iocage_hooks.0)
  iocage_tags: dict(iocage_properties.notes | split | map('split', '='))
keyed_groups:
  - prefix: vmm
    key: iocage_tags.vmm
  - prefix: project
    key: iocage_tags.project

Отобразите теги и группы. Создайте плейбук pb-test-groups.yml со следующим содержимым:

- hosts: all
  remote_user: admin

  vars:

    ansible_python_interpreter: auto_silent

  tasks:

    - debug:
        var: iocage_tags

    - debug:
        msg: |
          {% for group in groups %}
          {{ group }}: {{ groups[group] }}
          {% endfor %}
      run_once: true

Запустите плейбук:

shell> ansible-playbook -i hosts/02_iocage.yml pb-test-groups.yml

PLAY [all] **********************************************************************************************************

TASK [debug] ********************************************************************************************************
ok: [srv_1] =>
    iocage_tags:
        alias: srv_1
        project: foo
        vmm: iocage_02
ok: [srv_2] =>
    iocage_tags:
        alias: srv_2
        project: foo
        vmm: iocage_02
ok: [srv_3] =>
    iocage_tags:
        alias: srv_3
        project: bar
        vmm: iocage_02

TASK [debug] ********************************************************************************************************
ok: [srv_1] =>
    msg: |-
        all: ['srv_1', 'srv_2', 'srv_3']
        ungrouped: []
        vmm_iocage_02: ['srv_1', 'srv_2', 'srv_3']
        project_foo: ['srv_1', 'srv_2']
        project_bar: ['srv_3']

PLAY RECAP **********************************************************************************************************
srv_1                      : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
srv_2                      : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
srv_3                      : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0