在特定主机组上运行ansible

问题描述

我正在尝试使用以下命令运行ansible，

I am trying to run ansible with the following command,

ansible-playbook provision.yml -l webserver

我的主机文件包含以下主机组，

And my hosts file contains the following host groups,

[webclient]
172.29.4.75
[webserver]
172.29.4.76

我的Provision.yml还包含以下2个主机，

My provision.yml also contains 2 hosts as below,

- hosts: webclient
  user: centos
  roles: 
   - nginx
   - nvm
- hosts: webserver
  user: centos
  roles: 
   - tomcat

我的问题甚至被认为我使用为Webclient指定的"-l Webserver"角色也可以在webclient主机中运行.如何控制它仅运行特定的主机组?

My issue here is even thought I use "-l webserver" roles specified for webclient also runs in webclient hosts. How can I control it to run only specific host groups?

推荐答案

这通常意味着您在webserver和webclient组下具有相同的主机.

This usually means that you have same host under webserver and webclient groups.

传递-l webserver告诉Ansible使用清单中webserver组下的所有主机.
当Ansible开始此播放- hosts: webclient时，它将在清单中搜索匹配项，然后从limit参数减少与主机的匹配项.因此，如果您的主机同时位于webserver和webclient下，Ansible将执行webclient中的任务为它们播放.

Passing -l webserver tells Ansible to use all host from inventory, that are under webserver group.
When Ansible starts this play - hosts: webclient, it searches for matches in inventory and then reduce the match with hosts from limit argument. So if you have some host that is both under webserver and webclient, Ansible will execute tasks from webclient play for them.

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