loop в loop-е

- name: test loop
  debug:
    msg: '{{ item.0.key }} - {{ item.1.name }}:{{ item.1.chmod }}'
  loop: >-
    {{ auth | dict2items | subelements('value') }}
  loop_control:
    label: '{{ item.0.key }}'

loop двух элементов

playbook test.yml

test.yml

- hosts: localhost
  gather_facts: no
  connection: local
  vars:
    type: st1
    size: 2000
    instance_ids:
      - xxx
      - yyy
      - zzz
    objs:
      - { key1: /dev/sdb1, key2: "{{instance_ids}}" }
      - { key1: /dev/sdc1, key2: "{{instance_ids}}" }
      - { key1: /dev/sdd1, key2: "{{instance_ids}}" }
 
  tasks:
    - name: 2nd --------
      debug: msg="{{ item.0.key1 }} and {{ item.1 }} and {{ size }} and {{ type }}"
      with_subelements:
        - "{{ objs }}"
        - key2

Использование:

ansible-playbook test.yml -i hosts/all | grep -i "msg"
 
"msg": "/dev/sdb1 and xxx and 2000 and st1"
"msg": "/dev/sdb1 and yyy and 2000 and st1"
"msg": "/dev/sdb1 and zzz and 2000 and st1"
"msg": "/dev/sdc1 and xxx and 2000 and st1"
"msg": "/dev/sdc1 and yyy and 2000 and st1"
"msg": "/dev/sdc1 and zzz and 2000 and st1"
"msg": "/dev/sdd1 and xxx and 2000 and st1"
"msg": "/dev/sdd1 and yyy and 2000 and st1"
"msg": "/dev/sdd1 and zzz and 2000 and st1"

Если вы уверены, что ваши списки синхронизированы, использовать zip filter, как показано ниже в test.yml MVCE плейбуке.

test.yml

- name: Zip demo
  hosts: localhost
  gather_facts: false
 
  vars:
    "dev_names": [
      "nameisone",
      "nameistwo"
    ]
 
    "dev_types": [
      "type_one",
      "type_two"
    ]
 
  tasks:
    - name: demonstrate how to use the zip filter with a loop
      debug:
        msg: "Element from first list: {{ item.0 }}. Element from second list: {{ item.1 }}"
      loop: "{{ dev_names | zip(dev_types) | list }}"

Выполнение плейбука:

$ ansible-playbook test.yml 
 
PLAY [Zip demo] ************************************************************************************************************************************************************************************************************************
 
TASK [demonstrate how to use the zip filter with a loop] *******************************************************************************************************************************************************************************
ok: [localhost] => (item=['nameisone', 'type_one']) => {
    "msg": "Element from first list: nameisone. Element from second list: type_one"
}
ok: [localhost] => (item=['nameistwo', 'type_two']) => {
    "msg": "Element from first list: nameistwo. Element from second list: type_two"
}
 
PLAY RECAP *****************************************************************************************************************************************************************************************************************************
localhost                  : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

Loop по атрибутам словаря

Есть словарь, где мы хотим сделать loop только по конкретным атрибутам, а не всем значениям. Пример описания интерфейсов:

interfaces:
  eth0:
    ip: 10.0.0.10
    mask: 16
  eth1:
    ip: 192.168.1.100
    mask: 24

Как сделать loop только по всем IP адресам? Нужен фильтр map. Просмотрим все значения из словаря interfaces (eth0, eth1) и затем извлечем атрибут ip из них и сформируем список.

vars:
  ip_addresses: "{{ interfaces.values() | map(attribute='ip') | list }}"

Ansible filters are a very powerful tool, so I would recommend you take some time to read it thoroughly. If you are looking for more Ansible tips, such as how to make a playbook distribution agnostic or setup your laptop with Ansible, look here.