如何在包含/导入的任务中使用标签？

Question

有一个示例手册的主要任务：

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---\n- name: Include tasks\n  include_tasks: include_task.yml\n  # args:\n  #   apply:\n  #     tags: task\n  tags: task\n\n- name: Import tasks\n  import_tasks: import_task.yml\n  tags: task\n\n- name: Main task\n  debug:\n    msg: The main task\n  tags: main\n

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include_task.yml：

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---\n- name: Subtask3\n  debug:\n    msg: Subtask3 include\n  tags: task1\n\n- name: Subtask4\n  debug:\n    msg: Subtask4 include\n  tags: task2\n

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导入_task.yml：

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---\n- name: Subtask1\n  debug:\n    msg: Subtask1 import\n  tags: task1\n\n- name: Subtask2\n  debug:\n    msg: Subtask2 import\n  tags: task2\n

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一些预期用途的示例：

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\xe2\x9d\xaf ansible-playbook playbooks/playground.yml\nlocalhost | SUCCESS => {\n    "changed": false,\n    "include": "include_task.yml",\n    "include_args": {}\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask3 include"\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask4 include"\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask1 import"\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask2 import"\n}\nlocalhost | SUCCESS => {\n    "msg": "The main task"\n}\n\n\xe2\x9d\xaf ansible-playbook playbooks/playground.yml -t main\nlocalhost | SUCCESS => {\n    "msg": "The main task"\n}\n\n

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以及一些错误用法的例子：

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\xe2\x9d\xaf ansible-playbook playbooks/playground.yml -t task\nlocalhost | SUCCESS => {\n    "changed": false,\n    "include": "include_task.yml",\n    "include_args": {}\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask1 import"\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask2 import"\n}\n\n\xe2\x9d\xaf ansible-playbook playbooks/playground.yml -t task,task1\nlocalhost | SUCCESS => {\n    "changed": false,\n    "include": "include_task.yml",\n    "include_args": {}\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask3 include"\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask1 import"\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask2 import"\n\n\xe2\x9d\xaf ansible-playbook playbooks/playground.yml -t task,task2\nlocalhost | SUCCESS => {\n    "changed": false,\n    "include": "include_task.yml",\n    "include_args": {}\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask4 include"\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask1 import"\n}\nlocalhost | SUCCESS => {\n    "msg": "Subtask2 import"\n

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如果我取消注释该片段：

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args:\n    apply:\n      tags: task\n

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它仅返回“有效”输出：\xe2\x9d\xaf ansible-playbook playbooks/playground.yml -t task

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我想实现：当我使用任务标签时，include_task.yml 或/和 import_task.yml 中的两个任务都会被执行。 \n当我使用任务时，task1标签只会执行第一个子任务。任务、task2标签的情况也类似。

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通常我只在 main.yml 文件中使用标签。但有时我需要更大的颗粒度，所以我想在包含/导入的任务中使用额外的标签。\n这可能吗？

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我不确定这是否是 import_tasks 嵌套标签的正确使用：

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\xe2\x9d\xaf ansible-playbook playbooks/playground.yml -t task2\nlocalhost | SUCCESS => {\n    "msg": "Subtask2 import"\n}\n\n\xe2\x9d\xaf ansible-playbook playbooks/playground.yml -t task1\nlocalhost | SUCCESS => {\n    "msg": "Subtask1 import"\n}\n

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在我看来，对于更大的剧本，最好使用：ansible-playbook playbooks/playground.yml -t task,task1而不是ansible-playbook playbooks/playground.yml -t task1. 因为标签task1可以在多个地方使用。

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Answer 1

结果是设计使然。引用包含的标签继承：

如果您向包含添加标签，它们仅适用于包含本身，不适用于包含文件中的任何任务

这解释了“错误用法”

• -t task该文件已包含，但分别标记为任务 1和任务 2 的子任务 3和子任务 4不执行。导入的Subtask1和Subtask2会执行，因为它们从导入继承了标记任务。

• -t task,task1 子任务 3执行，因为任务 1适用。子任务 1和子任务 2执行，因为任务适用

• -t task,task2与上面相同，但执行Subtask4而不是Subtask3

下面的片段将标签任务应用于包含的任务。这解释了“有效”结果。

args:
    apply:
      tags: task

以下任务可以解决问题。文件include_task.yml将始终被包含，并且标记任务将应用于包含的任务

    - include_tasks: include_task.yml
      args:
        apply:
          tags: task
      tags: always
    - import_tasks: import_task.yml
      tags: task

请参阅下面的缩略结果

shell> ansible-playbook pb.yml | grep msg:
  msg: Subtask3 include
  msg: Subtask4 include
  msg: Subtask1 import
  msg: Subtask2 import

shell> ansible-playbook pb.yml -t task | grep msg:
  msg: Subtask3 include
  msg: Subtask4 include
  msg: Subtask1 import
  msg: Subtask2 import

shell> ansible-playbook pb.yml -t task1 | grep msg:
  msg: Subtask3 include
  msg: Subtask1 import

shell> ansible-playbook pb.yml -t task2 | grep msg:
  msg: Subtask4 include
  msg: Subtask2 import

与 相比，您不能期望-t task,task1或-t task,task2受到更多限制-t task。