• ansible基础知识,基本操作


    • 安装
    查看该目录/etc/yum.repos.d下是否存在 Centos-7.repo, epel.repo
    如果没有,安装base源:curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
    然后执行以下命令进行安装:
    wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
    yum install ansible -y
    • 功能体验
    1. 克隆虚拟机并启动,修改配置
    修改主机名:hostnamectl set-hostname 主机名
    修改:cd /etc/sysconfig/network-scripts/ifcfg-eth0
    删除UUID一行
    IPADDR=100.0.0.200
    修改 /etc/hosts:
    10.0.0.200 主机名
    重启网卡:
    systemctl restart network
    
    2. 连接:
    生成密钥并推送: 
    ssh-keygen
    ssh-copy-id -i ~/.ssh/id_rsa.pub root@10.0.0.200
    测试:
    ssh 10.0.0.200 date	显示时间
    配置主机的清单:
    vim /etc/ansible/hosts
    [web]
    10.0.0.100
    10.0.0.200
    给自己发送密钥:
    ssh-copy-id -i ~/.ssh/id_rsa.pub root@10.0.0.100
    ping测试: 
    ansible web -m ping	显示绿色
    ansible all -m ping(测试所有机器)
    ansible all -m shell -a 'df -h'(可查看磁盘空间)
    
    3. ansible playbook自动化安装nginx:
    a: vim /opt/playbook_nginx.yml # 要严格按照格式编写
    - hosts: web
      remote_user: root
      vars:
        http_port: 80
      tasks:
        - name: Add Nginx Yum Repository
          yum_repository:
            name: nginx
            description: Nginx Repository
            baseurl: http://nginx.org/packages/centos/7/$basearch/
            gpgcheck: no
    
        - name: Install Nginx Server
          yum: 
            name=nginx state=present
    
        - name: Configure Nginx Server
          template: src=./default.conf.template dest=/etc/nginx/conf.d/default.conf
          notify: Restart Nginx Server
    
        - name: Start Nginx Server
          service: name=nginx state=started enabled=yes
    
      handlers:
        - name: Restart Nginx Server
          service: name=nginx state=restarted
    
    
    b: vim /opt/default.conf.template
      server {
        listen {{ http_port }};
        server_name localhost;
    
      location / {
        root /usr/share/nginx/html;
        index index.html index.htm;
        }
      }
    
    4. 检查语法:
    ansible-playbook --syntax playbook_nginx.ym
    
    5. 模拟执行:
    ansible-playbook -C playbook_nginx.yml 
    
    6. 执行:
    ansible-playbook playbook_nginx.yml
    

      

      

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  • 原文地址:https://www.cnblogs.com/rongge95500/p/10895341.html
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