ansible-playbook-案例分析

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Playbook 将会使 Ansible 的功能更为完善、Playbook 可以固化所有操作，减少人为失误， 满足工程量较大的工具所具备具备的复杂度、可扩展度等要求，使得 Ansible 成为超一流的管理工具。安装apache案例：

shell 脚本安装apache

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# !/bin/bash 
# 安装 Apache 
yum install --quiet -y httpd httpd- devel 
# 复制 配置文件 
cp /path/to/config/httpd.conf /etc/httpd/conf/httpd.conf 
cp /path/to/httpd-vhosts.conf /etc/httpd/conf/httpd-vhosts.conf 
#启动 Apache，并设置开机启动 
systemctl start httpd
systemctl enable httpd

chmod +x install_apache.sh
./install_apache.sh

Playbook command 模块 安装apache

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--- 
- hosts: all 
  tasks: 
   - name: "安装 Apache" 
     command: yum install --quiet -y httpd httpd-devel 
   - name: "复制 配置文件" 
     command: cp /tmp/httpd.conf /etc/httpd/conf/httpd.conf 
     command: cp /tmp/httpd-vhosts.conf /etc/httpd/conf/httpd-vhosts.conf
   - name: "启动 Apache， 并设置开机启动"
     command: systemctl start httpd
     command: systenctl enable httpd

ansible-playbook install_apache.yml

Playbook yum 模块 安装apache

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---
- hosts: all
  sudo: yes
  tasks:
   - name: 安装apache
     yum: name={{ item }} state=present
     with_items:
       - httpd
       - httpd-devel
   - name: 复制配置文件
     copy:
       src: '{{ item.src }}'
       dest: '{{ item.dest }}'
       owner: root
       group: root
       mode: 0644
     with_items:
       - {
         src: '/tmp/httpd.conf',
	 dest: '/etc/httpd/conf/httpd.conf'
       }
       - {
         src: '/tmp/httpd-vhosts.conf',
	 dest: '/etc/httpd/conf/httpd-vhosts.conf'
       }
   - name: 检查Apache运行状态，并设置开机启动
     service: name=httpd state=started enabled=yes

使用了yum、copy、service对apache服务进行安装、配置和运行状态维护等一系列操作。