在本地主机中运行Ansible任务

我需要检查localhost上是否存在一个文件（/tmp/test.html），如果存在，则执行其他任务。 请您帮助在本地主机（工作站）中运行第一个任务（名称：检查存在和复制）

本地主机：工作站 远程主机：服务器A、服务器B

下面是我的剧本

---
- name: Check exist and copy
  hosts: all
  tasks:
  - name: check if file is exists #need to execute this task in workstation
    stat: 
     path: /tmp/test.html
    register: file_present

  - name: copy to taggroup 1
    copy: 
     src: /tmp/test.html 
     dest: /tmp/dest1.html
    when: file_present.stat.exists == 0 and inventory_hostname in groups ['taggroup1']

  - name: copy to taggroup 2
    copy: 
     src: /tmp/test.html 
     dest: /tmp/dest2.html
    when: file_present.stat.exists == 0 and inventory_hostname in groups ['taggroup2']

请尝试以下操作：

---
- name: Check exist and copy
  hosts: all
  tasks:
  - name: check if file is exists #need to execute this task in workstation
    stat: 
     path: /tmp/test.html
    register: file_present
    delegate_to: localhost

  - name: copy to taggroup 1
    copy: 
     src: /tmp/test.html 
     dest: /tmp/dest1.html
    when: file_present.stat.exists and inventory_hostname in groups ['taggroup1']

  - name: copy to taggroup 2
    copy: 
     src: /tmp/test.html 
     dest: /tmp/dest2.html
    when: file_present.stat.exists and inventory_hostname in groups ['taggroup2']

看

您可以使用

delegate\u to:

在不同于当前

ansible\u主机的机器上运行任务，在以下情况下不需要模块stat。例如，如果文件/tmp/test.html不存在，则播放失败，否则继续播放

- hosts: all
  vars:
    my_file: '/tmp/test.html'
  tasks:
    - fail:
        msg: "{{ my_file }} does not exist. End of play."
      when: my_file is not exists
      delegate_to: localhost
      run_once: true

    - debug:
        msg: "Continue play."
      run_once: true

试着跟随

---

- name: Check exist and copy
  hosts: all
  tasks:
  - name: check if file is exists #need to execute this task in workstation
      stat: path=/tmp/test.html
    register: file_present
    delegate_to: localhost 

  - name: copy to taggroup 1
    copy: 
     src: /tmp/test.html 
     dest: /tmp/dest1.html
    when: file_present.stat.exists and inventory_hostname in groups ['taggroup1']

  - name: copy to taggroup 2
    copy: 
     src: /tmp/test.html 
     dest: /tmp/dest2.html
    when: file_present.stat.exists and inventory_hostname in groups ['taggroup2']

谢谢大家的大力支持。这是固定的答案

---
- name: Check exist and copy
  hosts: all
  tasks:
  - name: check if file is exists #need to execute this task in workstation
    stat: 
     path: /tmp/test.html
    register: file_present
    delegate_to: localhost
    run_once_ true

  - name: copy to taggroup 1
    copy: 
     src: /tmp/test.html 
     dest: /tmp/dest1.html
    when: file_present.stat.exists and inventory_hostname in groups ['taggroup1']

  - name: copy to taggroup 2
    copy: 
     src: /tmp/test.html 
     dest: /tmp/dest2.html
    when: file_present.stat.exists and inventory_hostname in groups ['taggroup2']



请注意，使用上述手册，委派任务将针对
all
组中的每个主机运行（例如，如果您有100台主机，它将运行100次）。您可能希望查看和，以便只运行一次，并为localhost存储事实。您在
when
子句中的测试将变成：
hostvars['localhost'].file\u present.stat.exists
与您之前1小时发布的Calum Halpin的答案有什么区别？对我来说这看起来像是一个绝对的复制品。。。