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。
| cd /usr/local/srcwget 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.gzmv mysql-5.6.35-linux-glibc2.5-x86_64 /usr/local/mysqlcd /usr/local/mysqluseradd mysqlmkdir -p /data/mysqlchown -R mysql:mysql /data/mysql./scripts/mysql_install_db --user=mysql --datadir=/data/mysqlcp support-files/my-default.cnf /etc/my.cnfcp support-files/mysql.server /etc/init.d/mysqld |
2.1 创建目录：
| mkdir /usr/local/mysql3307chown -R mysql.mysql /usr/local/mysql3307/mkdir -p /data/mysql3307chown -R mysql.mysql /data/mysql3307mkdir -p /home/data/mysql3307/binlogchown -R mysql.mysql /home/data/mysql3307 |
2.2 配置文件
| [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_safemysqladmin =/usr/local/mysql/bin/mysqladminlog =/var/log/mysqld_multi.log[mysqld1]socket = /usr/local/mysql3307/mysql.sockport = 3307pid-file = /usr/local/mysql3307/mysql.piddatadir = /data/mysql3307log_bin=/home/data/mysql3307/binlogserver-id = 1innodb_buffer_pool_size = 128Minnodb_flush_log_at_trx_commit = 0 |
2.3 初始化数据库
| /usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/data/mysql3307 |
3.1 创建目录：
| mkdir /usr/local/mysql3308chown -R mysql.mysql /usr/local/mysql3308/mkdir -p /data/mysql3308chown -R mysql.mysql /data/mysql3308mkdir -p /home/data/mysql3308/binlogchown -R mysql.mysql /home/data/mysql3308 |
3.2 配置文件
| [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_safemysqladmin =/usr/local/mysql/bin/mysqladminlog =/var/log/mysqld_multi.log[mysqld1]socket = /usr/local/mysql3307/mysql.sockport = 3307pid-file = /usr/local/mysql3307/mysql.piddatadir = /data/mysql3307log_bin=/home/data/mysql3307/binlogserver-id = 1innodb_buffer_pool_size = 128Minnodb_flush_log_at_trx_commit = 0[mysqld2]socket = /usr/local/mysql3308/mysql.sockport = 3308pid-file = /usr/local/mysql3308/mysql.piddatadir = /data/mysql3308log_bin=/home/data/mysql3308/binlogserver-id = 2innodb_buffer_pool_size = 128Minnodb_flush_log_at_trx_commit = 0 |
