ansible - 使用嵌套的 delegate_to 将文件从一个远程服务器复制到另一个远程服务器

Question

作为用户，我想将文件从 node1 复制到 node2。 copy module + delegate_to 是否可行

下面是我想做的。 Playbook 从 node3 运行。

Playbook Sample

---
- name: Gather Facts for all hosts
  hosts: all
  gather_facts: true
  any_errors_fatal: true
  become: true

- name: Test
  hosts: all
  gather_facts: false
  any_errors_fatal: true
  become: true
  roles:
    - role: test

Role Sample

---
- block:
    - include_tasks: test.yml
      any_errors_fatal: true
      run_once: true

Task Sample

---
 - name: Test
   block:
    - name: Transfer files from node1 to node2
      copy:
        src: /tmp/a
        dest: /tmp/
      delegate_to: node2

  delegate_to: node1

Answer 1

只有在源服务器(在您的情况下是 kube master)或 kube 节点中启用 rsync 时，您才能使用同步模块。

方法一:从master推送，需要master开启rsync

同步默认使用push方式

- hosts: nodes
  tasks:
    - name: Transfer file from master to nodes
      synchronize:
        src: /src/path/to/file
        dest: /dest/path/to/file
      delegate_to: "{{ master }}"

方法二:使用fetch和copy模块

 - hosts: all
   tasks:
     - name: Fetch the file from the master to ansible
       run_once: yes
       fetch: src=/src/path/to/file dest=temp/ flat=yes
       when: "{{ ansible_hostname == 'master' }}"
     - name: Copy the file from the ansible to nodes
       copy: src=temp/file dest=/dest/path/to/file
       when: "{{ ansible_hostname != 'master' }}"

希望这对您有所帮助。