mysql使用mysqld_multi部署单机多实例的方法教程

目录

• 一、mysql编译安装：
• 二、准备第一个多实例3307
• 三、准备第二个多实例3308
• 四、启动多实例
• 五、查看启动状态
• 六、停止多实例
• 七、各自登录mysql实例

前言

大家应该都有所体会，随着硬件层面的发展，linux系统多核已经是普通趋势，而mysql是单进程多线程，所以先天上对多进程的利用不是很高，虽然5.6版本已经在这方面改进很多，但是也没有达到100%，所以为了充分的利用系统资源，mysql有自己的补充，那就是可以部署多实例，一个实例一个端口。

mysqld_multi设计用于管理在同一台机器上运行的多个mysqld进程，这些进程使用不同的socket文件并监听在不同的端口上。mysqld_multi可以批量启动、关闭、或者报告这些mysqld进程的状态。

下面话不多说了，来一起看看详细的介绍吧。

 

一、mysql编译安装：

 

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cd /usr/local/src wget http: //mirrors .sohu.com /mysql/MySQL-5 .6 /mysql-5 .6.35-linux-glibc2.5-x86_64. tar .gz tar zxvf mysql-5.6.35-linux-glibc2.5-x86_64. tar .gz mv mysql-5.6.35-linux-glibc2.5-x86_64 /usr/local/mysql cd /usr/local/mysql useradd mysql mkdir -p /data/mysql chown -R mysql:mysql /data/mysql . /scripts/mysql_install_db --user=mysql --datadir= /data/mysql cp support-files /my-default .cnf /etc/my .cnf cp support-files /mysql .server /etc/init .d /mysqld

 

二、准备第一个多实例3307

 

2.1 创建目录：

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mkdir /usr/local/mysql3307 chown -R mysql.mysql /usr/local/mysql3307/ mkdir -p /data/mysql3307 chown -R mysql.mysql /data/mysql3307 mkdir -p /home/data/mysql3307/binlog chown -R mysql.mysql /home/data/mysql3307

2.2 配置文件

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[root@zhdya01 ~] # vim /etc/my.cnf # For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the # *** default location during install, and will be replaced if you # *** upgrade to a newer version of MySQL. [mysqld_multi] mysqld = /usr/local/mysql/bin/mysqld_safe mysqladmin = /usr/local/mysql/bin/mysqladmin log = /var/log/mysqld_multi .log [mysqld1] socket = /usr/local/mysql3307/mysql .sock port = 3307 pid- file = /usr/local/mysql3307/mysql .pid datadir = /data/mysql3307 log_bin= /home/data/mysql3307/binlog server- id = 1 innodb_buffer_pool_size = 128M innodb_flush_log_at_trx_commit = 0

2.3 初始化数据库

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1	/usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir= /usr/local/mysql --datadir= /data/mysql3307

 

三、准备第二个多实例3308

 

3.1 创建目录：

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mkdir /usr/local/mysql3308 chown -R mysql.mysql /usr/local/mysql3308/ mkdir -p /data/mysql3308 chown -R mysql.mysql /data/mysql3308 mkdir -p /home/data/mysql3308/binlog chown -R mysql.mysql /home/data/mysql3308

3.2 配置文件

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[root@zhdya01 ~] # vim /etc/my.cnf # For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html # *** DO NOT EDIT THIS FILE. It's a template which will be copied to the # *** default location during install, and will be replaced if you # *** upgrade to a newer version of MySQL. [mysqld_multi] mysqld = /usr/local/mysql/bin/mysqld_safe mysqladmin = /usr/local/mysql/bin/mysqladmin log = /var/log/mysqld_multi .log [mysqld1] socket = /usr/local/mysql3307/mysql .sock port = 3307 pid- file = /usr/local/mysql3307/mysql .pid datadir = /data/mysql3307 log_bin= /home/data/mysql3307/binlog server- id = 1 innodb_buffer_pool_size = 128M innodb_flush_log_at_trx_commit = 0 [mysqld2] socket = /usr/local/mysql3308/mysql .sock port = 3308 pid- file = /usr/local/mysql3308/mysql .pid datadir = /data/mysql3308 log_bin= /home/data/mysql3308/binlog server- id = 2 innodb_buffer_pool_size = 128M innodb_flush_log_at_trx_commit = 0

3.3 初始化数据库

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1	/usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir= /usr/local/mysql --datadir= /data/mysql3308

 

四、启动多实例

 

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/etc/init .d /mysqld start mysqld_multi --defaults-extra- file = /etc/my .cnf start 1,2 [root@zhdya01 bin] # !net netstat -lntp -lntp Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address  Foreign Address  State PID /Program name tcp 0 0 0.0.0.0:22  0.0.0.0:*  LISTEN 1241 /sshd tcp 0 0 127.0.0.1:25  0.0.0.0:*  LISTEN 2087 /master tcp6 0 0 :::3306   :::*   LISTEN 4406 /mysqld tcp6 0 0 :::3307   :::*   LISTEN 4197 /mysqld tcp6 0 0 :::3308   :::*   LISTEN 3359 /mysqld tcp6 0 0 :::8080   :::*   LISTEN 2222 /java tcp6 0 0 :::22   :::*   LISTEN 1241 /sshd tcp6 0 0 ::1:25   :::*   LISTEN 2087 /master

 

五、查看启动状态

 

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[root@zhdya01 bin] # mysqld_multi --defaults-extra-file=/etc/my.cnf report Reporting MySQL servers MySQL server from group: mysqld1 is running MySQL server from group: mysqld2 is running

 

六、停止多实例

 

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[root@zhdya01 bin] # mysqld_multi --defaults-extra-file=/etc/my.cnf stop 1,2 [root@zhdya01 bin] # mysqld_multi --defaults-extra-file=/etc/my.cnf report Reporting MySQL servers MySQL server from group: mysqld1 is not running MySQL server from group: mysqld2 is not running

 

七、各自登录mysql实例

 

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[root@zhdya01 bin] # mysql --socket=/usr/local/mysql3307/mysql.sock Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.35-log MySQL Community Server (GPL) Copyright (c) 2000, 2016, Oracle and /or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and /or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql>

总结

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