1. yum安装服务
yum install mariadb-server
2. 创建多实例的目录
mkdir /mysqldb/{3306,3307,3308}/{etc,socket,pid,log,data} -pv chown -R mysql.mysql /mysqldb/
3 生成数库文件
mysql_install_db --datadir=/mysqldb/3306/data --user=mysql --basedir=/usr mysql_install_db --datadir=/mysqldb/3307/data --user=mysql --basedir=/usr mysql_install_db --datadir=/mysqldb/3308/data --user=mysql --basedir=/usr
4 编辑配置文件
cp /etc/my.cnf /mysqldb/3307/etc/ vim /mysqldb/3307/etc/my.cnf [root@centos7 3307]#cat etc/my.cnf [mysqld] port=3307 *** datadir=/mysqldb/3307/data socket=/mysqldb/3307/socket/mysql.sock symbolic-links=0 [mysqld_safe] log-error=/mysqldb/3307/log/mariadb.log pid-file=/mysqldb/3307/pid/mariadb.pid
5 编辑服务脚本
vim /mysqldb/3307/mysqld [root@db01 3306]# cat mysql #!/bin/bash port=3306 mysql_user="root" mysql_pwd="123456" cmd_path="/usr/bin" mysql_basedir="/mysqldb" mysql_sock="${mysql_basedir}/${port}/socket/mysql.sock" function_start_mysql(){ if [ ! -e "$mysql_sock" ];then printf "Start MysQL... " ${cmd_path}/mysqld_safe --defaults-file=${mysql_basedir}/${port}/etc/my.cnf &> /dev/null & else printf "Mysql is Running.... " exit
fi } function_stop_mysql(){ if [ ! -e "$mysql_sock" ];then printf "MySQL is stoped... " exit else printf "Stoping Mysql... " ${cmd_path}/mysqladmin -u ${mysql_user} -p${mysql_pwd} -S ${mysql_sock} shutdown fi } function_restart_mysql(){ printf "Restarting Mysql... " 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} " esac
6. 改权限
chmod 700 /mysqldb/3307/mysqld
/mysqldb/3307/mysqld start
#查看端口
[root@db01 3306]# netstat -lntup|grep 330*
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 15422/mysqld
tcp 0 0 0.0.0.0:3307 0.0.0.0:* LISTEN 15632/mysqld
tcp 0 0 0.0.0.0:3308 0.0.0.0:* LISTEN 15802/mysqld
/mysqldb/3307/mysqld stop
6 改密码
mysqladmin -uroot -S /mysqldb/3307/socket/mysql.sock password '123456'
vim /mysqldb/3307/mysqld
# 将新的密码写入脚本中
7:重新启动
mysql -S /mysqldb/3307/socket/mysql.sock -uroot -p123456