Ansible:通过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.我不能用命令以及外壳来做到这一点.请建议我要去哪里错了-

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格式如何.但是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，则返回代码为>1.我们通过"failed_when"进行评估.
• 要获取命令的输出，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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