是否打印Ansible中每个项目的外壳输出？

我想使用Ansible中的“with_items”构造执行几个命令。如果命令失败，我想打印它的标准输出。我举了一个简单的例子来说明这个问题

- action: shell echo {{item}}
  with_items:
  - 1
  - 2
  register: task

- debug: var=item.stdout_lines
  with_items: "{{task.results}}"

问题是不仅打印标准输出行。我怎样才能解决这个问题

如果命令失败，我想打印它的标准输出

如果shell以非零状态退出，那么Ansible将在该错误时退出

话虽如此，如果你改变

- debug: var=item.stdout_lines
  with_items: "{{task.results}}"

到

这将打印所有输出行，而不显示结果字典中的所有其他信息。

您也可以使用

输出：

ap test.yml -c local -i 'localhost, '

PLAY [all] *********************************************************************

TASK [setup] *******************************************************************
ok: [localhost]

TASK [test] ********************************************************************
fatal: [localhost]: FAILED! => {"changed": true, "cmd": "date; /bin/false", "delta": "0:00:00.011686", "end": "2016-11-23 11:43:26.554559", "failed": true, "rc": 127, "start": "2016-11-23 11:43:26.542873", "stderr": "/bin/sh: /bin/false: No such file or directory", "stdout": "Wed 23 Nov 2016 11:43:26 GMT", "stdout_lines": ["Wed 23 Nov 2016 11:43:26 GMT"], "warnings": []}

TASK [debug] *******************************************************************
ok: [localhost] => {
    "cmd_reg": {
        "changed": true,
        "cmd": "date; /bin/false",
        "delta": "0:00:00.011686",
        "end": "2016-11-23 11:43:26.554559",
        "failed": true,
        "rc": 127,
        "start": "2016-11-23 11:43:26.542873",
        "stderr": "/bin/sh: /bin/false: No such file or directory",
        "stdout": "Wed 23 Nov 2016 11:43:26 GMT",
        "stdout_lines": [
            "Wed 23 Nov 2016 11:43:26 GMT"
        ],
        "warnings": []
    }
}

PLAY RECAP *********************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0

注意事项：

如果需要手动使构建失败，则需要使构建失败，因为本手册假定一切正常

使用打印出所需的所有内容-这是块的简单图示

---
  - hosts: all

    tasks:
      - block:
        - name: test
          shell: date; /bin/false
          register: cmd_reg
        rescue:
          - debug: var=cmd_reg
          # fail the build ?

ap test.yml -c local -i 'localhost, '

PLAY [all] *********************************************************************

TASK [setup] *******************************************************************
ok: [localhost]

TASK [test] ********************************************************************
fatal: [localhost]: FAILED! => {"changed": true, "cmd": "date; /bin/false", "delta": "0:00:00.011686", "end": "2016-11-23 11:43:26.554559", "failed": true, "rc": 127, "start": "2016-11-23 11:43:26.542873", "stderr": "/bin/sh: /bin/false: No such file or directory", "stdout": "Wed 23 Nov 2016 11:43:26 GMT", "stdout_lines": ["Wed 23 Nov 2016 11:43:26 GMT"], "warnings": []}

TASK [debug] *******************************************************************
ok: [localhost] => {
    "cmd_reg": {
        "changed": true,
        "cmd": "date; /bin/false",
        "delta": "0:00:00.011686",
        "end": "2016-11-23 11:43:26.554559",
        "failed": true,
        "rc": 127,
        "start": "2016-11-23 11:43:26.542873",
        "stderr": "/bin/sh: /bin/false: No such file or directory",
        "stdout": "Wed 23 Nov 2016 11:43:26 GMT",
        "stdout_lines": [
            "Wed 23 Nov 2016 11:43:26 GMT"
        ],
        "warnings": []
    }
}

PLAY RECAP *********************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0