mysql 多实例部署 Centos7.6 部署3个Mariadb 实例
[root@localhost ~]# yum install mariadb-server -y

创建对应的目录文件

[root@localhost ~]# mkdir /mysql/{3306,3307,3308}/{data,etc,socket,log,bin,pid} -p

chown -R mysql.mysql /mysql

初始化数据库文件

[root@localhost ~]# mysql_install_db --datadir=/mysql/3306/data/ --user=mysql
[root@localhost ~]# mysql_install_db --datadir=/mysql/3307/data/ --user=mysql
[root@localhost ~]# mysql_install_db --datadir=/mysql/3308/data/ --user=mysql

创建对应配置文件

[root@localhost ~]# cp /etc/my.cnf /mysql/3306/etc

修改对应的配置文件

[mysqld]
port=3306
datadir=/mysql/3306/data
socket=/mysql/3306/socket/mysql.sock
symbolic-links=0

[mysqld_safe]
log-error=/mysql/3306/log/mariadb.log
pid-file=/mysql/3306/pid/mariadb.pid

另外的2个实例调整对应的端口即可

准备启动脚本 另外的实例修改对应的端口即可

[root@localhost ~]# vim /mysql/3306/bin/mysqld

!/bin/bash

chkconfig: 345 80 2

port=3306
mysql_user="root"
mysql_pwd=""
cmd_path="/usr/bin"
mysql_basedir="/mysql"
mysql_sock="${mysql_basedir}/${port}/socket/mysql.sock"

function_start_mysql()
{

if [ ! -e "$mysql_sock" ];then
  printf "Starting MySQL...\n"
  ${cmd_path}/mysqld_safe --defaults-file=${mysql_basedir}/${port}/etc/my.cnf  &> /dev/null  &
else
  printf "MySQL is running...\n"
  exit
fi

}

function_stop_mysql()
{

if [ ! -e "$mysql_sock" ];then
   printf "MySQL is stopped...\n"
   exit
else
   printf "Stoping MySQL...\n"
   ${cmd_path}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S ${mysql_sock} shutdown

fi
}

function_restart_mysql()
{

printf "Restarting MySQL...\n"
function_stop_mysql
sleep 2
function_start_mysql

}

case $1 in
start)

function_start_mysql

;;
stop)

function_stop_mysql

;;
restart)

function_restart_mysql

;;
*)

printf "Usage: ${mysql_basedir}/${port}/bin/mysqld {start|stop|restart}\n"

esac

启动服务

[root@localhost ~]# /mysql/3306/bin/mysqld start
Starting MySQL...
[root@localhost ~]# /mysql/3307/bin/mysqld start
Starting MySQL...
[root@localhost ~]# /mysql/3308/bin/mysqld start
Starting MySQL...

连接测试

关闭数据库

[root@localhost ~]# /mysql/3306/bin/mysqld stop
Stoping MySQL...
Enter password: