016 Multiple inventory constructed

Extending example 015 Multiple inventory cache.

Use case 

Create inventory groups using the inventory plugin ansible.builtin.constructed after the two inventory plugin vbotka.freebsd.iocage configuration files.

Tree 

shell> tree .
.
├── ansible.cfg
├── hosts
│   ├── 02_iocage.yml
│   ├── 04_iocage.yml
│   └── 99_constructed.yml
└── pb-test.yml

Synopsis 

The inventory plugin vbotka.freebsd.iocage gets the jails (managed nodes):
- test_111:113 from the host iocage_02
- test_131:133 from the host iocage_04
and creates the inventory groups test_02 and test_04.
The inventory plugin ansible.builtin.constructed creates the inventory groups:
- test comprising hosts starting 'test'
- test_up comprising running hosts starting 'test'.

Requirements 

inventory plugin vbotka.freebsd.iocage
jails created in 010 Clone basejails and create inventory

Notes 

The inventory files in the directory hosts are evaluated in the alphabetical order.
See 015 Multiple inventory cache
The inventory plugin vbotka.freebsd.iocage doesn’t provide the option use_vars_plugins.
See 019 Inventory option use_vars_plugins.

Jails at iocage_02 

[iocage_02]# iocage list -l

+------+----------------+------+-------+------+-----------------+-------------------+-----+----------------+----------+
| JID  |      NAME      | BOOT | STATE | TYPE |     RELEASE     |        IP4        | IP6 |    TEMPLATE    | BASEJAIL |
+======+================+======+=======+======+=================+===================+=====+================+==========+
| None | ansible_client | off  | down  | jail | 14.3-RELEASE-p8 | em0|10.1.0.199/24 | -   | -              | yes      |
+------+----------------+------+-------+------+-----------------+-------------------+-----+----------------+----------+
| None | test_111       | off  | down  | jail | 14.3-RELEASE-p8 | em0|10.1.0.111/24 | -   | ansible_client | yes      |
+------+----------------+------+-------+------+-----------------+-------------------+-----+----------------+----------+
| None | test_112       | off  | down  | jail | 14.3-RELEASE-p8 | em0|10.1.0.112/24 | -   | ansible_client | yes      |
+------+----------------+------+-------+------+-----------------+-------------------+-----+----------------+----------+
| None | test_113       | off  | down  | jail | 14.3-RELEASE-p8 | em0|10.1.0.113/24 | -   | ansible_client | yes      |
+------+----------------+------+-------+------+-----------------+-------------------+-----+----------------+----------+

Jails at iocage_04 

[iocage_04]# iocage list -l

+------+----------------+------+-------+------+-----------------+---------------------+-----+----------------+----------+
| JID  |      NAME      | BOOT | STATE | TYPE |     RELEASE     |         IP4         | IP6 |    TEMPLATE    | BASEJAIL |
+======+================+======+=======+======+=================+=====================+=====+================+==========+
| None | ansible_client | off  | down  | jail | 15.0-RELEASE-p3 | vnet0|10.1.0.198/24 | -   | -              | yes      |
+------+----------------+------+-------+------+-----------------+---------------------+-----+----------------+----------+
| None | test_131       | off  | down  | jail | 15.0-RELEASE-p3 | vnet0|10.1.0.131/24 | -   | ansible_client | yes      |
+------+----------------+------+-------+------+-----------------+---------------------+-----+----------------+----------+
| None | test_132       | off  | down  | jail | 15.0-RELEASE-p3 | vnet0|10.1.0.132/24 | -   | ansible_client | yes      |
+------+----------------+------+-------+------+-----------------+---------------------+-----+----------------+----------+
| None | test_133       | off  | down  | jail | 15.0-RELEASE-p3 | vnet0|10.1.0.133/24 | -   | ansible_client | yes      |
+------+----------------+------+-------+------+-----------------+---------------------+-----+----------------+----------+

ansible.cfg 

[defaults]
gathering = explicit
callback_result_format = yaml
display_skipped_hosts = false
host_key_checking = false

[connection]
pipelining = true

Inventory hosts 

hosts/02_iocage.yml

plugin: vbotka.freebsd.iocage
host: 10.1.0.73
user: admin
sudo: true
sudo_preserve_env: true
env:
  CRYPTOGRAPHY_OPENSSL_NO_LEGACY: 1
compose:
  ansible_host: iocage_ip4
groups:
  test_02: inventory_hostname.startswith('test')

hosts/04_iocage.yml

plugin: vbotka.freebsd.iocage
host: 10.1.0.29
user: admin
sudo: true
compose:
  ansible_host: iocage_ip4
groups:
  test_04: inventory_hostname.startswith('test')

hosts/99_constructed.yml

plugin: ansible.builtin.constructed
groups:
    test: inventory_hostname.startswith('test')
    test_up: inventory_hostname.startswith('test') and iocage_state == 'up'

Playbook pb-test.yml 

- hosts: test

  tasks:

    - debug:
        var: iocage_ip4

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

Playbook output - Display groups 

(env) > ansible-playbook pb-test.yml -i hosts

PLAY [test] ********************************************************************

TASK [debug] *******************************************************************
ok: [test_111] => 
    iocage_ip4: 10.1.0.111
ok: [test_112] => 
    iocage_ip4: 10.1.0.112
ok: [test_113] => 
    iocage_ip4: 10.1.0.113
ok: [test_131] => 
    iocage_ip4: 10.1.0.131
ok: [test_132] => 
    iocage_ip4: 10.1.0.132
ok: [test_133] => 
    iocage_ip4: 10.1.0.133

TASK [debug] *******************************************************************
ok: [test_111] => 
    msg: |-
        all: ['ansible_client', 'test_111', 'test_112', 'test_113', 'test_131', 'test_132', 'test_133']
        ungrouped: ['ansible_client']
        test_02: ['test_111', 'test_112', 'test_113']
        test_04: ['test_131', 'test_132', 'test_133']
        test: ['test_111', 'test_112', 'test_113', 'test_131', 'test_132', 'test_133']

PLAY RECAP *********************************************************************
test_111                   : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
test_112                   : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
test_113                   : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
test_131                   : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
test_132                   : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
test_133                   : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   