问题类型

• 错误报告

组件名称

核心

可用版本

ansible 2.3.0.0 (stable-2.3 923c9ef17c) last updated 2017/03/17 09:12:40 (GMT +1000)
  config file = /apps/dev/playbook/jordan/mr-ansible/ansible.cfg
  configured module search path = Default w/o overrides
  python version = 2.7.12 (default, Sep 23 2016, 14:23:49) [GCC 4.4.7 20120313 (Red Hat 4.4.7-17)]

组态

标准

操作系统/环境

RHEL 6.7

概要

如果我正在检查是否定义了由模块注册的变量（带有when子句），然后获得子字典值，则这可能不是错误，而只是我在较旧版本中使用Ansible 2.3 RC1时遇到的问题在2.3中失败，而在2.2及以下版本中则正常。 当由于某种原因跳过注册变量的模块，然后执行后续任务检查是否定义了变量并获取子键时，就会发生这种情况。

重现步骤

剧本范例

---
- name: test
  hosts: localhost
  connection: local

  tasks:
  - name: module that won't run
    stat:
      path: /apps/tmp
    register: test
    when: False

  - name: debug of var
    debug:
      var: test

  - name: test with conditional
    debug:
      msg: A
    when: test is defined and test.stat.exists

预期成绩

使用Ansible 2.2.1.0时

ansible 2.2.1.0
  config file = /cygdrive/d/dev/jordan/ansible.cfg
  configured module search path = Default w/o overrides

PLAY [test] ********************************************************************

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

TASK [module that won't run] ***************************************************
task path: /cygdrive/d/dev/jordan/2.3tests.yml:7
skipping: [localhost] => {"changed": false, "skip_reason": "Conditional check failed", "skipped": true}

TASK [debug of var] ************************************************************
task path: /cygdrive/d/dev/jordan/2.3tests.yml:13
ok: [localhost] => {
    "test": {
        "changed": false,
        "skip_reason": "Conditional check failed",
        "skipped": true
    }
}

TASK [test with conditional] ***************************************************
task path: /cygdrive/d/dev/jordan/2.3tests.yml:17
skipping: [localhost] => {"changed": false, "skip_reason": "Conditional check failed", "skipped": true}

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

实际结果

PLAY [test] ************************************************************************************************************************************************************************

TASK [Gathering Facts] *************************************************************************************************************************************************************
Friday 17 March 2017  15:20:42 +1000 (0:00:00.039)       0:00:00.039 **********
ok: [localhost]
META: ran handlers

TASK [module that won't run] *******************************************************************************************************************************************************
task path: /apps/dev/playbook/jordan/mr-ansible/test.yml:7
Friday 17 March 2017  15:20:44 +1000 (0:00:01.093)       0:00:01.133 **********
skipping: [localhost] => {"changed": false, "skip_reason": "Conditional result was False", "skipped": true}

TASK [debug of var] ****************************************************************************************************************************************************************
task path: /apps/dev/playbook/jordan/mr-ansible/test.yml:13
Friday 17 March 2017  15:20:44 +1000 (0:00:00.012)       0:00:01.145 **********
ok: [localhost] => {
    "changed": false,
    "test": {
        "changed": false,
        "skip_reason": "Conditional result was False",
        "skipped": true
    }
}

TASK [test with conditional] *******************************************************************************************************************************************************
task path: /apps/dev/playbook/jordan/mr-ansible/test.yml:17
Friday 17 March 2017  15:20:44 +1000 (0:00:00.034)       0:00:01.180 **********
fatal: [localhost]: FAILED! => {"failed": true, "msg": "The conditional check 'test is defined and test.stat.exists' failed. The error was: error while evaluating conditional (test is defined and test.stat.exists): 'dict object' has no attribute 'stat'\n\nThe error appears to have been in '/apps/dev/playbook/jordan/mr-ansible/test.yml': line 17, column 5, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n  - name: test with conditional\n    ^ here\n"}

PLAY RECAP *************************************************************************************************************************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=1