当主机无法访问时跳过故障模块

Question

当某些主机无法访问时，我正在尝试打印自定义消息。我的问题是，当主机无法访问时，下一个任务将跳过它，因此永远不会触发失败模块。并且可到达的主机也会由于when condition are not met.

我试过了ignore_unreachable: false，还是一样。任何想法将不胜感激。

---
- hosts: prod
  gather_facts: no
  tasks:
  - name: fail when not reachable
    action: ping
    register: ping_result
#    any_errors_fatal: true

  - fail:
      msg: "please make sure all server up and run again"
    when: ping_result.unreachable is defined
    any_errors_fatal: true

Answer 1

ignore_unreachable您正在寻找应该设置为 的关键字true，因为您确实希望忽略无法访问的主机以继续执行您的fail任务。

鉴于剧本：

- hosts: nodes
  gather_facts: no

  tasks:
    - ping:
      register: ping_result
      ignore_unreachable: true

    - fail:
        msg: "please make sure all server up and run again"
      when: ping_result.unreachable is defined
      any_errors_fatal: true

这产生：

TASK [ping] *******************************************************
fatal: [node1]: UNREACHABLE! => changed=false 
  msg: 'Failed to connect to the host via ssh'
  skip_reason: Host node1 is unreachable
  unreachable: true
fatal: [node2]: UNREACHABLE! => changed=false 
  msg: 'Failed to connect to the host via ssh'
  skip_reason: Host node2 is unreachable
  unreachable: true
fatal: [node3]: UNREACHABLE! => changed=false 
  msg: 'Failed to connect to the host via ssh'
  skip_reason: Host node3 is unreachable
  unreachable: true

TASK [fail] *******************************************************
fatal: [node1]: FAILED! => changed=false 
  msg: please make sure all server up and run again
fatal: [node2]: FAILED! => changed=false 
  msg: please make sure all server up and run again
fatal: [node3]: FAILED! => changed=false 
  msg: please make sure all server up and run again

NO MORE HOSTS LEFT ************************************************