Ansible failed_when 只打印自定义错误信息

Question

我正在编写一个简单的Ansible剧本来RHEL在混合发行版的 Linux 机器上运行闰秒检测器。

这是剧本

---
- hosts: Linux
  vars_files:
    - ../group_vars/Linux.yml

  tasks:

    - name: Running RHEL leap second detector (will skip if distirubtion is not RHEL)
      when: ansible_distribution == "RedHat"
      script: ../scripts/leap_vulnerability.sh
      register: result
      changed_when: false

    - name: RHEL Lead second detector result
      when: ansible_distribution == "RedHat"
      fail: msg="Kernel {{ansible_kernel}} is vulnerable"
      failed_when: "'kernel is vulnerable' in result.stdout"

它工作正常，这是一个输出示例

TASK: [Running RHEL leap second detector (will skip if distirubtion is not RHEL)] ***
skipping: [UTIL02]
skipping: [UTIL01]
ok: [SERV01]
ok: [SERV02]

TASK: [RHEL Lead second detector result] **************************************
skipping: [UTIL02]
skipping: [UTIL01]
failed: [SERV01] => {"failed": true, "failed_when_result": true}
msg: Kernel 2.6.18-53.el5 is vulnerable
failed: [SERV02] => {"failed": true, "failed_when_result": true}
msg: Kernel 2.6.18-53.el5 is vulnerable

PLAY RECAP ********************************************************************

UTIL01            : ok=1    changed=0    unreachable=0    failed=0
UTIL02            : ok=1    changed=0    unreachable=0    failed=0
SERV01            : ok=2    changed=0    unreachable=0    failed=1
SERV02            : ok=2    changed=0    unreachable=0    failed=1

如您所见，还有一行我并不真正想要的消息。

failed: [SERV01] => {"failed": true, "failed_when_result": true}

是否可以不打印该条件评估消息而只打印我定义的错误消息？像下面这样的东西

failed: Kernel 2.6.18-53.el5 is vulnerable

Answer 1

似乎没有办法改变 的正常输出ansible-playbook。但是您可以使用回调插件生成额外的输出。

您也许可以编写一个插件来获取自己的输出，而通过将其重定向到/dev/null.