参考之前运行ansible play的注册结果

Question

希望在后续剧本中检索

register

ed 输出的值，但会产生不期望的结果。

如何在下面的剧本中从第一个游戏到第二个游戏中仅捕获“成功”一词？

（编辑 - 还添加了调试）Playbook 内容：

 cat play1.yml
---
- hosts: all
  connection: local
  gather_facts: false

  tasks:
   - name: Parse result info
     shell: |
       cmd: |
       echo "Result output goes here. Some Exception number details : Exception from HRESULT" | grep "Exception from HRESULT"
       excep_status=`echo $?`
       if (( $excep_status == 0)) ; then
         echo "SUCCESSFUL"  # Exception present
       elif (( $excep_status == 1)) ; then
         echo "FAILED"
       fi
     register: ExcepStatus
     delegate_to: localhost

   - debug: msg="{{ExcepStatus.stdout}}"

   - name: echo ExcepStatus
     shell: |
       echo {{ ExcepStatus.stdout }}
     delegate_to: localhost

这是简单的库存文件

$ cat inv
localhost

这是运行结果：

$ ansible-playbook -i inv play1.yml
    PLAY [all] **************************************************************************************************************************************************

TASK [Parse result info] ************************************************************************************************************************************
changed: [localhost -> localhost]

TASK [debug] ************************************************************************************************************************************************

    ok: [localhost] => {
        "msg": "Result output goes here. Some Exception number details : Exception from HRESULT\nSUCCESSFUL"
    }

TASK [echo ExcepStatus] *************************************************************************************************************************************
fatal: [localhost -> localhost]: FAILED! => {"changed": true, "cmd": "echo Result output goes here. Some Exception number details : Exception from HRESULT\nSUCCESSFUL\n", "delta": "0:00:00.011982", "end": "2023-12-18 05:00:49.203555", "msg": "non-zero return code", "rc": 127, "start": "2023-12-18 05:00:49.191573", "stderr": "/bin/sh: line 1: SUCCESSFUL: command not found", "stderr_lines": ["/bin/sh: line 1: SUCCESSFUL: command not found"], "stdout": "Result output goes here. Some Exception number details : Exception from HRESULT", "stdout_lines": ["Result output goes here. Some Exception number details : Exception from HRESULT"]}

PLAY RECAP **************************************************************************************************************************************************
localhost                  : ok=1    changed=1    unreachable=0    failed=1    skipped=0    rescued=0    ignored=0

Answer 1

您可以缓存变量。例如配置缓存 ansible.builtin.jsonfile

shell> cat ansible.cfg

[defaults]
fact_caching = jsonfile
fact_caching_connection = /var/cache/ansible
fact_caching_prefix = cache_
fact_caching_timeout = 86400

  ...

并在控制器上创建目录（根据您的需要设置所有者和权限）

shell> sudo mkdir /var/cache/ansible
shell> sudo chown root:adm /var/cache/ansible
shell> sudo chmod g+w /var/cache/ansible

当您第一次运行以下剧本时

shell> cat pb.yml
- hosts: all

  tasks:

    - block:

        - debug:
            msg: ExcepStatus is undefined
        - command: echo SUCCESSFUL
          register: out
        - set_fact:
            ExcepStatus: "{{ out }}"
            cacheable: true
  
      when: ExcepStatus is undefined

    - debug:
        var: ExcepStatus.stdout

您将创建并缓存变量ExcepStatus。查看参数可缓存

shell> ansible-playbook pb.yml -l test_01

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

TASK [debug] ********************************************************************************
ok: [test_01] => 
  msg: ExcepStatus is undefined

TASK [command] ******************************************************************************
changed: [test_01]

TASK [set_fact] *****************************************************************************
ok: [test_01]

TASK [debug] ********************************************************************************
ok: [test_01] => 
  ExcepStatus.stdout: SUCCESSFUL

  ...

查看缓存

shell> cat /var/cache/ansible/cache_test_01 
{
    "ExcepStatus": {
        "changed": true,
        "cmd": [
            "echo",
            "SUCCESSFUL"
        ],
        "delta": "0:00:00.009163",
        "end": "2023-12-18 07:11:26.221247",
        "failed": false,
        "msg": "",
        "rc": 0,
        "start": "2023-12-18 07:11:26.212084",
        "stderr": "",
        "stderr_lines": [],
        "stdout": "SUCCESSFUL",
        "stdout_lines": [
            "SUCCESSFUL"
        ]
    }

现在，当您运行剧本时，剧本将从缓存中读取变量ExcepStatus

shell> ansible-playbook pb.yml -l test_01

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

TASK [debug] ********************************************************************************
skipping: [test_01]

TASK [command] ******************************************************************************
skipping: [test_01]

TASK [set_fact] *****************************************************************************
skipping: [test_01]

TASK [debug] ********************************************************************************
ok: [test_01] => 
  ExcepStatus.stdout: SUCCESSFUL

  ...

根据您的需求调整超时。