需要遍历包含主机名的文件并在任务中使用该值

Question

我正在尝试编写一个代码，该代码将使用ansible的nagios模块为文件中定义的主机名设置停机时间。我的查询是如何编写代码以遍历包含主机的文件。我的目标是使用此任务

  tasks:
    - nagios:
        author: ansible
        action: downtime
        minutes: 30
        service: all
        host: **{{variable value from the file containing hostnames}} ## here is what I want the loop variable should be able to put the hostname extracted from file**
        comment: Downtime scheduled deled by Ansible
        cmdfile: /usr/local/nagios/var/rw/nagios.cmd

Answer 1

一种选择是循环 with_lines 。参见下面的示例

    - debug: var=item                                                                        
      with_lines: cat /scratch/tmp/test