Role & Include

Playbook contain multiple Plays

Each play contain multiple tasks

Use include module to call and use small/repeatable playbook, make main playbook neat.

Use **include_role module to use pre-defined ROLE and Tasks associated with this role

Role is to load pre-defined tasks, as yaml files, then together with variables 变量

**

• import_tasks(Static)方法会在playbooks解析阶段将父task变量和子task变量全部读取并加载

• include_tasks(Dynamic)方法则是在执行子task的play之前才会加载自己变量

Role 的基本结构

#tree roles/

.

└── role_ONE

├── README.md # 说明文件

├── defaults

│ └── main.yml # 可被复写的Variable。

├── handlers

│ └── main.yml # 主要的 handler。

├── tasks

│ └── main.yml # 主要的 task。

├── templates # 被tasks中main.yml调用的Jinja2模板, j2 files

└── vars

└── main.yml # 不可被复写的Variable。

└── role_TWO

└── role_FIVE

Use Ansible-Galaxy to create/import role

#ansible-galaxy init sample_role # 创建最佳结构

#ansible-galaxy import predefined_role

Use Role

- name: Deploy Core SW with role

hosts: core-sw

connection: network_cli

gather_facts: no

roles:

- agg_sw

- switch