对于多instance安装的MYSQL来说，起停的过程相对复杂，可以定义一些简单的脚本来简化日常的管理。

1# 环境变量脚本

[mysql@mysql01 scripts]$ cat mysql_env.ini

#set env

MYSQL_USER=root

MYSQL_PASS='password123' #明文保存的密码，生产库中当然不可以这样使用。

COPYDIR='/opt/mysql'

BASEDIR='/data/mysqldata'

#check parameter

if [ $# -eq 0 ]

then

MYSQL_PORT=3306

else

MYSQL_PORT=$1

fi

[mysql@mysql01 scripts]$

2# MYSQL启动脚本

[mysql@mysql01 scripts]$ cat mysql_startup.sh

#!/bin/bash

source /data/mysqldata/scripts/mysql_env.ini

echo "Startup MySQL Service: localhost_"${MYSQL_PORT}

${COPYDIR}/bin/mysqld_safe --defaults-file=${BASEDIR}/${MYSQL_PORT}/my.cnf &

[mysql@mysql01 scripts]$

3# MYSQL停止脚本

[mysql@mysql01 scripts]$ cat mysql_shutdown.sh

#!/bin/bash

source /data/mysqldata/scripts/mysql_env.ini

echo "Shutdown MySQL Service: localhost_"${MYSQL_PORT}

${COPYDIR}/bin/mysqladmin -u${MYSQL_USER} -p${MYSQL_PASS} -S ${BASEDIR}/${MYSQL_PORT}/mysql.sock shutdown

[mysql@mysql01 scripts]$

4# 快速登陆

[mysql@mysql01 scripts]$ cat mysqlcmd.sh

#!/bin/bash

source /data/mysqldata/scripts/mysql_env.ini

echo "Startup MySQL CMD: localhost_"${MYSQL_PORT}

${COPYDIR}/bin/mysql -u${MYSQL_USER} -p${MYSQL_PASS} -S ${BASEDIR}/${MYSQL_PORT}/mysql.sock

[mysql@mysql01 scripts]$

5# 建立软连接

[mysql@mysql01 scripts]$ pwd

/data/mysqldata/scripts

[mysql@mysql01 scripts]$ ln -s mysqlcmd.sh mysqlcmd

[mysql@mysql01 scripts]$ ln -s mysql_startup.sh mysqlstart

[mysql@mysql01 scripts]$ ln -s mysql_shutdown.sh mysqlstop

[mysql@mysql01 scripts]$ ls -ralt

total 32

drwxr-xr-x. 5 mysql mysql 44 Aug 27 03:33 ..

-rwxrw-r--. 1 mysql mysql 189 Aug 28 20:14 mysql_startup.sh

-rwxrw-r--. 1 mysql mysql 220 Aug 28 20:19 mysql_shutdown.sh

-rwxrw-r--. 1 mysql mysql 202 Aug 28 20:23 mysqlcmd.sh

-rw-r--r--. 1 mysql mysql 12288 Aug 28 20:26 .mysql_shutdown.sh.swp

-rw-rw----. 1 mysql mysql 176 Aug 28 20:26 mysql_env.ini

lrwxrwxrwx. 1 mysql mysql 11 Aug 28 20:30 mysqlcmd -> mysqlcmd.sh

lrwxrwxrwx. 1 mysql mysql 16 Aug 28 20:30 mysqlstart -> mysql_startup.sh

lrwxrwxrwx. 1 mysql mysql 17 Aug 28 20:31 mysqlstop -> mysql_shutdown.sh

6# 使用过程

6.1# 确定当前运行中的MYSQL实例，以端口划分

[mysql@mysql01 scripts]$ netstat -lnt | grep 330

tcp6 0 0 :::3306 :::* LISTEN

可以看到当前3306正在运行，停止3306

6.2# 停止MYSQL

[mysql@mysql01 scripts]$ mysqlstop 3306

Shutdown MySQL Service: localhost_3306

Warning: Using a password on the command line interface can be insecure.

[mysql@mysql01 scripts]$

6.3# 启动MYSQL

[mysql@mysql01 scripts]$ mysqlstart 3306

Startup MySQL Service: localhost_3306

[mysql@mysql01 scripts]$ 180828 21:33:49 mysqld_safe Logging to '/data/mysqldata/3306/data/../mysql-error.log'.

180828 21:33:49 mysqld_safe Starting mysqld daemon with databases from /data/mysqldata/3306/data

[mysql@mysql01 scripts]$

6.4# 使用MYSQL

[mysql@mysql01 scripts]$ mysqlcmd 3306

Startup MySQL CMD: localhost_3306

Warning: Using a password on the command line interface can be insecure.

Welcome to the MySQL monitor. Commands end with ; or g.

Your MySQL connection id is 1

Server version: 5.6.31-log Source distribution

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