系统环境:centos6.264位内核版本:2.6.32-220.el6.x86_64mysql版本:5.1.62如果喜欢这篇博文,请给个赞,更多博文请访问平凡的日子linux开源技术博客一,MySQL多
系统环境:centos 6.2 64位
内核版本: 2.6.32-220.el6.x86_64
mysql版本:5.1.62
如果喜欢这篇博文,请给个赞,网站空间,更多博文请访问 平凡的日子 linux开源技术博客
一,美国服务器,MySQL多实例介绍及MySQL多实例的特点
1、什么是MySQL多实例?
MySQL多实例就是在一台机器上开启多个不同的服务端口(如:3306,3307,3308),运行多个MySQL服务进程,香港服务器租用,通过不同的socket监听不同的服务端口来提供各自的服务。
2、MySQL多实例的特点有以下几点:
1)、有效利用服务器资源,当单个服务器资源有剩余时,可以充分利用剩余的资源提供更多的服务。
2)、节约服务器资源
3)、资源互相抢占问题,当某个服务实例服务并发很高时或者开启慢查询时,会消耗更多的内存、CPU、磁盘IO资源,导致服务器上的其他实例提供服务的质量下降。
二,MySQL多实例的安装配置
1、首先创建mysql用户和组:
2、下载MySQL源码包并解压安装
3 mysql参数说明:
--prefix=/usr/local/mysql #指定mysql的安装路径
--enable-assembler #允许使用汇编模式(优化性能)
--enable-thread-safe-client #以线程方式编译mysql
--with-mysqld-user=mysql #指定mysql运行的系统的用户
--with-big-tables #支持大表,即使是32位的系统也能支持4G以上的表
--without-debug #使用非debug模式
--with-pthread #强制使用pthread线程库编译
--with-extra-charsets=complex #mysql默认的字符集使用complex
--with-ssl #支持ssl
--with-plugin=partition,innobase
--with-plugin-PLUGIN
--with-mysqld-ldflags=-all-static #服务器使用静态库(优化性能)
--with-client-ldfags=-all-static #客户端使用静态库(优化性能)
更多参数请看源码目录的INSTALL或者./configure --help
4、创建MySQL多实例的数据目录
5、创建MySQL多实例配置文件
这里和单实例配置不同。因为要配置多个配置文件要多份,我们可以通过vim命令来添加,如下
MySQL多实例的配置文件my.cnf和启动文件在附件,读者可以下载下来放到各实例的目录,启动文件需要把属组和属主改为mysql并添加执行权限,如下:
6、初始化MySQL数据目录并添加mysql命令道全局路径
7、启动MySQL多实例
检查端口看看mysql是否启动成功
通过上面截图我们发现mysql启动成功。
MySQL多实例配置文件和启动文件下载地址
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