---
- hosts: stand-alone    #被管理主机组，详情见/etc/ansible/hosts文件
  vars:  #注册变量  
    - installation_package: openGauss-Lite-3.0.0-openEuler-x86_64.tar.gz  #安装包
    - password: password123!  #密码
    - ansible_ip: 192.168.100.99  #ansible主机ip
  tasks:
    - name: Install dependencies packages   #安装依赖包
      yum:
       name:
         - flex 
         - bison 
         - ncurses-devel 
         - glibc-devel 
         - patch 
         - readline-devel 
         - libaio-devel
       state: present
    - name: Modify system configuration    #修改系统环境
      shell: |
        systemctl stop firewalld.service  #关闭防火墙
        systemctl disable firewalld.service
        sed -i '/^SELINUX=.*/ c\SELINUX=disabled' /etc/selinux/config  #关闭selinux
        echo "export LC_CTYPE=zh_CN.GB18030" >> /etc/profile  #统一字符集
        echo "export LC_ALL=zh_CN.GB18030" >> /etc/profile
        echo "export LANG=zh_CN.GB18030" >> /etc/profile
        source /etc/profile
        sed -i 's/^server/#server/g' /etc/chrony.conf   #时间同步
        sed -i "/^#server 0.*/ i\server {{ ansible_ip }} iburst"  /etc/chrony.conf
        systemctl restart chronyd.service
        swapoff -a   #关闭交换内存
        sed -i 's/^#RemoveIPC/RemoveIPC/' /etc/systemd/logind.conf  #关闭RemoveIPC
        systemctl daemon-reload
        systemctl restart systemd-logind
        echo "500 641280 500 500" > /proc/sys/kernel/sem  #修改信号集参数
    - name: Create omm user   #创建数据库专用用户
      user:
        name: omm
        state: present
    - name: Create installation directory    #创建数据目录和安装目录
      shell: |               
        mkdir -p /home/omm/openGauss/data
        mkdir -p /home/omm/openGauss/install
    - name: Download opengauss-Lite package   #下载安装包
      get_url: 
        url: https://opengauss.obs.cn-south-1.myhuaweicloud.com/3.0.0/x86_openEuler/{{ installation_package }}
        dest: /tmp/
    - name: Decompression opengauss-Lite package    #解压安装包
      unarchive:
          src: /tmp/{{ installation_package }}
          dest: /home/omm/openGauss/
          copy: no
    - name: Start up opengauss-Lite      #进行安装
      shell: |
        chown omm:omm -R /home/omm/openGauss/
        su omm -l -c "echo {{password}} | sh /home/omm/openGauss/install.sh --mode single -D ~/openGauss/data -R ~/openGauss/install --start"