Ansible：角色和任务混在一起被禁止吗？

Question

我正在使用以下site.yml剧本，并通过

ansible-playbook site.yml

- hosts: some_hosts
  vars:
    pip_install_packages:
      - name: docker

- tasks:

  - name: Conditionally include bar vars
    include_vars:
      file: bar_vars.yml
    when: some_condition == "bar"


  - name: Conditionally include foo vars
    include_vars:
      file: foo_vars.yml
    when: some_condition == "foo"


  roles:
    - role1
    - role2


  environment:
    SOME_ENV_VAR: "{{ vault_some_env_var }}"

呼叫失败，如下所示：

错误！字段“主机”为必填项，但未设置

但显而易见的是上述情况，hosts现场已被设置！

有什么建议么？

Answer 1

您可以在剧本中混合任务和角色，还可以使用“ pre_tasks”和“ post_tasks”控制何时执行任务。

在我看来，您有-不应该执行的任务-可能认为这是一种新玩法。

- hosts: some_hosts
  vars:
    pip_install_packages:
      - name: docker

- tasks: <-- This should not have a dash

使用前任务和后任务控制与角色相关的任务执行时间的示例：

---
- hosts: all
  name: Roles with pre and post tasks
  vars:
    somevar: foobar

  roles:
    - { role: common, tags: ["common"] }

  pre_tasks:
    - debug:
        msg: I execute before roles

  post_tasks:
    - debug:
        msg: I execute after roles