运行本地主机中的 Ansible 任务

Question

我需要检查本地主机上是否存在一个文件 (/tmp/test.html)，如果存在则执行其他任务。你能帮忙运行本地主机（工作站）中的第一个任务（名称：检查存在并复制）吗？

localhost: 工作站远程主机：servera，serverb

下面是我的playbook.yml

---
- 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']

Answer 1

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']

见the docs。

您可以使用 delegate_to: 在与当前 ansible_host 不同的机器上运行任务。

Answer 2

paths are tested at localhost 时不需要模块 stat。例如 fail 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

Answer 3

尝试关注

---

- 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']

Answer 4

感谢大家的大力支持。这是固定答案。

---
- 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']

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