Ansible:仅在存在时禁用服务 [英] Ansible: disable service only if present

问题描述

有什么好方法可以禁用和停止服务，但前提是该服务必须安装在服务器上?像这样:

Is there any nice way to do disable and stop a service, but only if it's installed on server? Something like this:

- service: name={{ item }} enabled=no state=stopped only_if_present=yes
  with_items:
  - avahi-daemon
  - abrtd
  - abrt-ccpp

请注意，"only_if_present"是Ansible中目前不存在的关键字，但是我想我的目标很明显.

Note that "only_if_present" is a keyword that doesn't exist right now in Ansible, but I suppose my goal is obvious.

推荐答案

我不知道您所用的软件包名称是什么，但是您可以执行以下操作:

I don't know what is the package name in your case, but you can do something similar to this:

- shell: dpkg-query -W 'avahi'
  ignore_errors: True
  register: is_avahi
  when: ansible_distribution == 'Debian' or ansible_distribution == 'Ubuntu'

- shell: rpm -q 'avahi'
  ignore_errors: True
  register: is__avahi
  when: ansible_distribution == 'CentOS' or ansible_distribution == 'Red Hat Enterprise Linux'

- service: name=avahi-daemon enabled=no state=stopped
  when: is_avahi|failed

更新:我添加了条件，以便当您有多个不同的发行版时，剧本都可以使用，您可能需要对其进行调整以满足自己的要求.

Update: I have added conditions so that the playbook works when you have multiple different distros, you might need to adapt it to fit your requirements.

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