基于yum源實現多實例

本實驗實現三個實例，分別使用端口3306,3307,3308

1.yum安裝mariadb-server#yum install mariadb-server

2.創建各個實例存放的目錄#mkdir? /data/mysql/{3306,3307,3308}/{etc,data,socket,log,bin,pid} -pv

3.修改目錄及子目錄的權限#chown -R mysql.mysql? /data/mysql

4.利用腳本生成默認數據庫及數據文件#/usr/bin/mysql_install_db --datadir=/data/mysql/3306/data --user=mysql

#/usr/bin/mysql_install_db --datadir=/data/mysql/3307/data --user=mysql

#/usr/bin/mysql_install_db --datadir=/data/mysql/3308/data --user=mysql

5.準備配置文件

以3306為例，3307和3308按照3306的配置文件加以修改即可。#vim /data/mysql/3306/etc/my.cnf[mysqld]

port=3306

datadir=/data/mysql/3306/data

socket=/data/mysql/3306/socket/mysql.sock

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0

# Settings user and group are ignored when systemd is used.

# If you need to run mysqld under a different user or group,

# customize your systemd unit file for mariadb according to the

# instructions in http://fedoraproject.org/wiki/Systemd

[mysqld_safe]

log-error=/data/mysql/3306/log/mariadb.log

pid-file=/data/mysql/3306/pid/mariadb.pid

#

# include all files from the config directory

#

#!includedir /etc/my.cnf.d

6.準備啟動程序腳本

我事先準備好了一個簡單的腳本文件mysqld(文末附腳本內容)#cp mysqld /data/mysql/3306/bin/

針對各個實例稍加修改(以3306為例)

文件中修改的內容：#!/bin/bash

port=3306

mysql_user="root"

mysql_pwd=""

cmd_path="/usr/bin"

mysql_basedir="/data/mysql"

mysql_sock="${mysql_basedir}/${port}/socket/mysql.sock"

修改完以后，對程序腳本添加執行權限：#chmod +x /data/mysql/3306/bin/mysqld

#chmod +x /data/mysql/3307/bin/mysqld

#chmod +x /data/mysql/3308/bin/mysqld

完成之后就可以運行啟動程序腳本啟動實例了(以3306為例)#/data/mysql/3306/bin/mysqld start

啟動之后可以查看端口開放情況以驗證是否成功。

啟動成功嗎，便可以通過socket，打開三個不同的實例了。(以3306為例)#mysql -S /data/mysql/3306/socket/mysql.sock

7.修改數據庫口令#mysqladmin -uroot -S /data/mysql/3306/socket/mysql.sock password "centos"

之后再次修改mysqld腳本

附：mysqld腳本文件內容#!/bin/bash

port=3306

mysql_user="root"

mysql_pwd="centos"

cmd_path="/usr/bin"

mysql_basedir="/data/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

總結

以上是生活随笔為你收集整理的mysql yum多实例_mysql———基于yum源实现多实例的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。