【openGauss】一键编译openGauss5.0+dolphin，体验新增的mysql兼容特性

脚本

• 新建一个/opt/onekey-build-og.sh文件，存入以下内容

  #!/bin/bash
  # 环境 centos 7.9 4C 8G  (配置越高编译越快，4G内存编译不了，磁盘大概需要14GB)
  # 安装一些依赖 （libaio-devel如果不卸载重装，可能会找不到io_context_t）
  yum remove libaio-devel libaio -y
  yum install -y git gmp  gmp-devel  mpfr  mpfr-devel  libmpc  libmpc-devel libaio libaio-devel flex bison ncurese-devel glibc-devel patch rehat-lsb-core readline-devel perl gcc gcc-c++# 新建一个用户
  useradd omm500# 创建目录
  mkdir /opt/omm500
  chown omm500 /opt/omm500 -R# 切换用户执行编译及安装
  chown omm500 install.sh
  chmod 777 install.sh
  su - omm500 -c "cd /opt && bash install.sh"
  

• 新建一个/opt/install.sh文件，存入以下内容

  #!/bin/bash
  # 创建数据目录
  cd /opt/omm500
  mkdir data# 下载编译好的三方库并解压(这里下载的是Centos7.6_x86_64的版本，在7.6和7.9都能用)
  wget https://opengauss.obs.cn-south-1.myhuaweicloud.com/5.0.0/binarylibs/openGauss-third_party_binarylibs_Centos7.6_x86_64.tar.gz
  tar -xvf openGauss-third_party_binarylibs_Centos7.6_x86_64.tar.gz# 克隆数据库源码仓
  git clone https://gitee.com/opengauss/openGauss-server -b 5.0.0# 配置环境变量(这里最核心的一点就是把gcc的默认路径改了，操作系统默认的版本太低)
  echo "export CODE_BASE=/opt/omm500/openGauss-server     # Path of the openGauss-server file " >> ~/.bash_profile
  echo "export BINARYLIBS=/opt/omm500/openGauss-third_party_binarylibs_Centos7.6_x86_64    # Path of the binarylibs file " >> ~/.bash_profile
  echo "export GAUSSHOME=\$CODE_BASE/dest/ " >> ~/.bash_profile
  echo "export GCC_PATH=\$BINARYLIBS/buildtools/gcc7.3/ " >> ~/.bash_profile
  echo "export CC=\$GCC_PATH/gcc/bin/gcc " >> ~/.bash_profile
  echo "export CXX=\$GCC_PATH/gcc/bin/g++ " >> ~/.bash_profile
  echo "export LD_LIBRARY_PATH=\$GAUSSHOME/lib:\$GCC_PATH/gcc/lib64:\$GCC_PATH/isl/lib:\$GCC_PATH/mpc/lib/:\$GCC_PATH/mpfr/lib/:\$GCC_PATH/gmp/lib/:\$LD_LIBRARY_PATH " >> ~/.bash_profile
  echo "export PATH=\$GAUSSHOME/bin:\$GCC_PATH/gcc/bin:\$PATH " >> ~/.bash_profile
  echo "export PGDATA=/opt/omm500/data" >> ~/.bash_profile
  echo "export PGPORT=5432" >> ~/.bash_profile
  echo "export PGDATABASE=postgres" >> ~/.bash_profile# 加载环境变量
  source ~/.bash_profile# 进入源码目录
  cd $CODE_BASE# 编译server (这里就是openGauss提供的一键式编译脚本)
  sh build.sh -m release -3rd $BINARYLIBS# 文件夹改名 (原文档说会生成dest目录，但实际上是生成到了mppdb_temp_install，所以改个名)
  mv mppdb_temp_install dest # 克隆插件仓，并复制到server源码目录内(必须单独编译，因为如果先放到server源码内，server都会编译不成功)
  git clone https://gitee.com/opengauss/Plugin -b 5.0.0
  cp Plugin/contrib/*  $CODE_BASE/contrib/ -r# 编译dolphin插件
  cd contrib/dolphin
  make install# 复制插件到编译好的server目录
  cp *.so $GAUSSHOME/lib/postgresql/ 
  cp *.control $GAUSSHOME/share/postgresql/extension/ 
  cp *.sql $GAUSSHOME/share/postgresql/extension/ # 初始化数据库
  gs_initdb --nodename=primary --pwpasswd=Sinvie@123# 配置一些数据库参数
  echo "port=$PGPORT" >> $PGDATA/postgresql.conf
  echo "listen_addresses = '0.0.0.0'" >> $PGDATA/postgresql.conf
  echo "password_encryption_type = 0" >> $PGDATA/postgresql.conf
  echo "log_directory = 'pg_log'" >> $PGDATA/postgresql.conf
  echo "remote_read_mode=non_authentication" >> $PGDATA/postgresql.conf
  echo "host all all 0.0.0.0/0 md5" >> $PGDATA/pg_hba.conf# 启动数据库
  gs_ctl start # 连接数据库并创建一个B库
  gsql -c "create database sioc_3_3 dbcompatibility='B'";# 开启一些mysql特性
  gsql -c "alter database sioc_3_3 set enable_set_variable_b_format = on;";
  gsql -c "alter database sioc_3_3 set dolphin.lower_case_table_names = 0;";
  gsql -c "alter database sioc_3_3 set dolphin.B_COMPATIBILITY_MODE = on;";
  # gsql -c "alter database sioc_3_3 set dolphin.sql_mode = '';";
  gsql -c "alter system set  enable_dolphin_proto= on;";
  # gsql -c "alter system set  default_database_name=sioc_3_3;";
  gsql -c "alter system set  dolphin_server_port=3306;";gs_ctl restart
  

• 对onekey-build-og.sh 授权可执行

  chmod 777 onekey-build-og.sh
  

• 然后执行这个sh文件（4C 8G 100M宽带 大约30分钟）

  ./onekey-build-og.sh
  

连接数据库

su - omm500
gsql -r -d sioc_3_3 -h 127.0.0.1 -U omm500 -W Sinvie@123

• 表名大小写敏感及反引号

  create table Test_123 (`a` int, `B` int ,"Ab" int);
  \d+ "Test_123"
  select * from Test_123;--不会报错
  select * from test_123;--会报错
  

• mysql客户端连接
  如果机器上没有安装mysql客户端，则先安装一下

  yum -y install http://dev.mysql.com/get/mysql80-community-release-el7-7.noarch.rpm
  yum search mysql
  yum install -y mysql-community-client.x86_64
  

创建一个新的数据库用户，授为管理员

su - omm500
gsql -c "create user emt password 'Sinvie@123';"
alter user emt sysadmin;

ALTER DATABASE "sioc_3_3" OWNER TO emt;CREATE SCHEMA public AUTHORIZATION emt;ALTER SCHEMA "public" OWNER TO "emt";

navicat连接

使用emt，密码：Sinvie@123，端口号5432，postgresql协议

环境清理命令

su - omm500
gs_ctl stop
exituserdel omm500
rm -rf /opt/omm500
rm -rf /home/omm500

本文参考：https://www.darkathena.top/archives/one-key-build-opengauss-and-dolphin