Question

是否可以在循环中多次调用角色，如下所示：

vars:
  my_array:
    - foo
    - bar
    - baz 
roles:
  - role: foobar
    with_items: my_array

我们怎么做？

Answer 1

现在支持Ansible 2.3.0：

- name: myrole
      with_items:
        - "aone"
        - "atwo"
      include_role:
        name: myrole
      vars:
        thing: "{{ item }}"

Answer 2

目前有no way to loop over a role，但正如Google小组讨论中所提到的，您可以将一个列表或字典传递给该角色，然后在内部循环。

所以你可以这样做：

# loop_role/tasks/main.yml

- name: debug item
  debug: var="{{ item }}"
  with_items: my_array

然后像这样使用它：

- hosts: all
  vars:
    my_array:
      - foo
      - bar
      - baz 
  roles:
    - { role: loop_role, my_array: "{{ my_array }}" }

Answer 3

此处记录了include_role模块：https://docs.ansible.com/ansible/include_role_module.html

根据已在Ansible 2.2中引入的文档

Answer 4

我在Ansible 2.8版中使用了类似下面的内容

tasks:
  - name: looping role to create multiple filesystem
    include_role:
      name: /opt/ansible/playbook/app_filesystem
    vars:
      vgname: "{{ item.vgname }}"
      lvname: "{{ item.lvname }}"
      lvsize: "{{ item.lvsize }}"
      mountpoint: "{{ item.mountpoint }}"
    loop:
      - { vgname: 'vgapp', lvname: 'lvapp', lvsize: '30g', mountpoint: '/app' }
      - { vgname: 'vgapp', lvname: 'lvappzk', lvsize: '64g', mountpoint: '/app/z' }
      - { vgname: 'vgapp', lvname: 'lvappdatazk', lvsize: '+100%FREE', mountpoint: '/app/data/zookeeper' }

tasks:
  - name: looping role to create multiple filesystem
    include_role:
      name: /opt/ansible/playbook/app_filesystem
    vars:
      vgname: "{{ item.vgname }}"
      lvname: "{{ item.lvname }}"
      lvsize: "{{ item.lvsize }}"
      mountpoint: "{{ item.mountpoint }}"
    loop:
      - { vgname: 'vgapp', lvname: 'lvapp', lvsize: '30g', mountpoint: '/app' }
      - { vgname: 'vgapp', lvname: 'lvappzk', lvsize: '64g', mountpoint: '/app/zookeeper' }
      - { vgname: 'vgapp', lvname: 'lvappdatazk', lvsize: '+100%FREE', mountpoint: '/app/data/zookeeper' }

Answer 5

以下是在my_array上使用include_role循环的代码示例：

- name: Use role in loop
  include_role:
    name: myrole
  loop: "{{ my_array }}"

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