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

mysql -S /mysql/3308/socket/mysql.sock -e 'select version()'

+----------------+

| version()      |

+----------------+

| 5.5.60-MariaDB |

+----------------+

# 关闭数据库

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

Stoping MySQL...

Enter password: