ansible——playbook的模块 _ansible

会挽雕弓如满月，西北望，射天狼。这篇文章主要讲述ansible——playbook的模块相关的知识，希望能为你提供帮助。
playbook的模块 1. Templates 模块

Jinja是基于python的模板引擎。Template类是Jinja的一个重要组件，可以看作是一个编译过的模板文件，用来产生目标文本，传递Python的变量给模板去替换模板中的标记。

1. 先准备一个以 .j2 为后缀的 template 模板文件，设置引用的变量

cp /etc/httpd/conf/httpd.conf /opt/httpd.conf.j2vim /opt/httpd.conf.j2 Listen http_port#42行，修改 ServerName server_name#95行，修改 DocumentRoot "root_dir"#119行，修改 < Directory "root_dir"> #131修改配置目录访问权限

文章图片

文章图片

2. 修改主机清单文件，使用主机变量定义一个变量名相同，而值不同的变量

vim /etc/ansible/hosts [webservers] 192.168.163.136 http_port=192.168.163.136:80 server_name=www.lisi.com:80 root_dir=/etc/httpd/htdocs[dbservers] 192.168.163.139 http_port=192.168.163.139:80 server_name=www.zhangsan.com:80 root_dir=/etc/httpd/htdocs

文章图片

3. 编写 playbook

vim apache.yaml --- - hosts: all remote_user: root vars: - package: httpd - service: httpd tasks: - name: install httpd package yum: name=package state=latest - name: install configure file template: src=https://www.songbingjia.com/opt/httpd.conf.j2 dest=/etc/httpd/conf/httpd.conf notify: - restart httpd - name: create root dir file: path=/etc/httpd/htdocs state=directory - name: start httpd server service: name=service enabled=true state=started handlers: - name: restart httpd service: name=service state=restartedansible-playbook apache.yaml

【ansible——playbook的模块】

文章图片

文章图片

4. 制作测试网页

ansible 192.168.163.138 -m shell -a "echo this is lisi template test > /etc/httpd/htdocs/index.html"#制作网页测试文件ansible 192.168.163.139 -m shell -a "echo this is zhangsan template test > /etc/httpd/htdocs/index.html" http://192.168.163.138 http://192.168.163.139 #登录访问查看

文章图片

文章图片

2. tags 模块

可以在一个playbook中为某个或某些任务定义“标签”，在执行此playbook时通过ansible-playbook命令使用--tags选项能实现仅运行指定的tasks。
playbook还提供了一个特殊的tags为always。作用就是当使用always当tags的task时，无论执行哪一个tags时，定义有always的tags都会执行

vim webhosts.yaml --- - hosts: webservers remote_user: root tasks: - name: Copy hosts file copy: src=https://www.songbingjia.com/etc/hosts dest=/opt/hosts tags: - only - name: touch file file: path=/opt/testhost state=touch tags: - always ansible-playbook webhosts.yaml --tags="only" ansible webservers -a "ls /opt/" ---------------------------------------------------------------- vim dbhosts.yaml --- - hosts: dbservers remote_user: root tasks: - name: Copy hosts file copy: src=https://www.songbingjia.com/etc/hosts dest=/opt/hosts tags: - only - name: touch file file: path=/opt/testhost state=touchansible-playbook dbhosts.yaml --tags="only"