vim for4.conf.j2

{% for p in ports %}

server{

​ listen {{ p.port }}

{% if p.name is defined %}

​ servername {{ p.name }}

{% endif %}

​ documentroot {{ p.rootdir }}

}

{% endfor %}

cp testfor3.yml testfor4.yml

vim testfor4.yml

—

– hosts: websrvs

remote_user: root

vars:

ports:

– web1:

​ port: 81

​ #name: web1.magedu.com

​ rootdir: /data/website1

– web2:

​ port: 82

​ name: web2.magedu.com

​ rootdir: /data/website1

– web3:

​ port: 83

​ #name: web3.magedu.com

​ rootdir: /data/website1

tasks:

– name: copy conf

template:src=for4.conf.j2 dest/data/for4.conf

执行结果：每台主机生成for3.conf文件，内容如下，web1与web3的name没赋值，所有跳过，web2的

name被赋值，文件中输出结果