role 的其他用法

---
- hosts: webser
  roles:
    - { role: nginx, tags: ['web', 'nginx'] } #设置角色标签
    - { role: php, when: ansible_version == "7" }
    - role: mysqld

指定标签运行： ansible-playbook -t web lamp.yaml

#task main.yaml
- include: yum.yaml
- include: template.yaml
- include: roles/httpd/