Ansible Study Notes (ii)--roles

The previous section outlined the overall layout, which highlights the meaning of the directories under the/etc/ansible/roles/tomcat directory.

此目录的目录结构如下:    .    ├── files    │   └── tomcat-initscript.sh    ├── handlers    │   └── main.yml    ├── tasks    │   └── main.yml    └── templates        ├── iptables-save        ├── server.xml        └── tomcat-users.xml

tasks/main.yml 里面有如下行:    - name: Configure Tomcat server      template: src=server.xml dest=/usr/share/tomcat/conf/      notify: restart tomcat    - name: Configure Tomcat user      template: src=tomcat-users.xml dest=/usr/share/tomcat/conf/      notify: restart tomcattemplate模块官方的解释为: Templates a file out to a remote server. 大概意思就是当 src=config_file 这些文件发生变化的时候，触发notify的动作templates目录就是存放这些文件用的(一般都是一些配置文件)handlers目录里有一个main.yml文件，就是用来执行notify动作的大概的流程为:    templates/config_file 发生变化 --> 触发notify: action --> action定义在 handlers/main.yml 中    notify后面的动作名字必须与handlers/main.yml里面的name后面的名字一致,例:    - name: Configure Tomcat user      template: src=tomcat-users.xml dest=/usr/share/tomcat/conf/      notify: restart tomcat    handlers:      - name: restart tomcat        service: name=tomcat state=restart而files目录下存放的是一些脚本, 通过copy模块可以transport到remote hosts上的，而后触发notify动作之后执行的脚本

Ansible Study Notes (ii)--roles