自动化运维ansible --playbook

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ansible-playbook 中变量优先级第一为 -e 参数后的定义，其二为yaml 中定义的，最后为hosts文件中定义的

[root@k8s-master ansible]# cat nginx.yml
---
- hosts: websvrs
  remote_user: root

  tasks:
    - name: install package
      yum:  name=nginx
    - name: copy template
      template: src=nginx.conf.j2 dest=/etc/nginx/nginx.conf
      notify: restart service
    - name: start service
      service: name=nginx state=started enabled=yes

  handlers:
    - name: restart service
      service: name=nginx state=restarted

[root@centos068 ansible]# cat web1.yml ;echo '-----------' ;cat templates/for1.conf.j2
---
- hosts: kubevela
  remote_user: root
  vars:
    ports:
      - 81
      - 82
      - 83
 
 
  tasks:
    - name: copy conf
      template: src=for1.conf.j2  dest=/opt/for1.conf
 
-----------
{% for p in ports %}
server{
          listen {{ p }}
 
}
{% endfor %}

结果输出：

[root@centos068 ansible]# cat web3.yml;echo '--------' ;cat templates/for3.conf.j2
---
- hosts: kubevela
  remote_user: root
  vars:
    ports:
      - web1:
        port: 80
        name: web1.xq0422.com
        #rootdir: /data/website1
 
      - web2:
        port: 82
        name: web2.xq0422.com
        rootdir: /data/website2
 
      - web3:
        port: 83
        name: web3.xq0422.com
        rootdir: /data/website3
 
  tasks:
    - name: copy conf
      template: src=for3.conf.j2  dest=/opt/for3.conf
 
--------
{% for p in ports %}
server{
          listen {{ p.port }}
          service {{ p.name }}
{% if p.rootdir is defined %}
          documentroot {{ p.rootdir }}
{% endif %}
}
{% endfor %}