Ansible:使用 Ansible 使用 Diff 命令 [英] Ansible: Use of Diff command using Ansible

问题描述

我正在尝试一项简单的任务，即找出两个文件之间的差异并将其存储在记事本中.我无法使用命令和 shell 来做到这一点.请建议我哪里出错了-

I am trying to one simple task which is find out the difference between the two files and store it in notepad. I am not able to do it with command as well as shell. Please suggest where i am going wrong-

---
- hosts: myserver
  tasks:
   - name: get the difference
     command: diff hosts.new hosts.mod
     register: diff
   - debug: var=diff.cmd

错误 -

fatal: [zlp12037]: FAILED! => {"changed": true, "cmd": ["diff", "hosts.new", "hosts.mod"], "delta": "0:00:00.003102", "end": "2017-03-29 10:17:34.448063", "failed": true, "rc": 1, "start": "2017-03-29 10:17:34.444961", "stderr": "", "stdout":

推荐答案

我不太确定您的输入播放在您的格式下是什么样子.但以下应该是一个解决方案:

I'm not quite sure what your input play looks like with your formatting. But the following should be a solution:

- name: "Get difference from two files"
  command: diff filea fileb
  args:
    chdir: "/home/user/"
  failed_when: "diff.rc > 1"
  register: diff
- name: debug output
  debug: msg="{{ diff.stdout }}"

一些解释:

• 如果 diff 命令失败，返回码 > 1.我们通过failed_when"来评估它.
• 为了获得命令的输出，我们打印.stdout"元素.
• 为确保我们位于文件所在的文件夹中，我们使用chdir".

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