安装步骤
1、下载
下载地址:http://dev.mysql.com/downloads/mysql/5.6.html#downloads
下载版本:选择的5.6.33,通用版,linux下64位
也可以直接复制64位的下载地址,通过命令下载:wget http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.33-linux-glibc2.5-x86_64.tar.gz
0、卸载老版本MySQL
查找并删除mysql有关的文件
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find / -name mysql
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rm -rf 上边查找到的路径,多个路径用空格隔开
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#或者下边一条命令即可
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find / -name mysql|xargs rm -rf
![](http://upload-images.jianshu.io/upload_images/1899977-305617e34955e4d3.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
1、在安装包存放目录下执行命令解压文件:
tar -zxvf mysql-5.6.31-linux-glibc2.5-x86_64.tar.gz
![](http://upload-images.jianshu.io/upload_images/1899977-f8b6174388c8531d.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
2、删除安装包,重命名解压后的文件
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rm -f mysql-5.6.31-linux-glibc2.5-x86_64.tar.gz
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mv mysql-5.6.31-linux-glibc2.5-x86_64/ mysql
![](http://upload-images.jianshu.io/upload_images/1899977-7c5b2ca42cf623e1.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
3、添加mysql用户组和mysql用户
先检查是否有mysql用户组和mysql用户
groups mysql
![](http://upload-images.jianshu.io/upload_images/1899977-cc398fb960e0cb76.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
若无,则添加;
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groupadd mysql
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useradd -r -g mysql mysql
![](http://upload-images.jianshu.io/upload_images/1899977-f80edc428a9e61cf.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
若有,则跳过;
![](http://upload-images.jianshu.io/upload_images/1899977-6aee55a3221c0446.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
4、进入mysql目录更改权限
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cd mysql/
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chown -R mysql:mysql ./
![](http://upload-images.jianshu.io/upload_images/1899977-ad018015ea413b53.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
5、执行安装脚本
./scripts/mysql_install_db --user=mysql
![](http://upload-images.jianshu.io/upload_images/1899977-e07b0b2383d9fc81.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
安装完之后修改当前目录拥有者为root用户,修改data目录拥有者为mysql
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chown -R root:root ./
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chown -R mysql:mysql data
![](http://upload-images.jianshu.io/upload_images/1899977-4e2b1c5c2fd75d24.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
6、更改mysql密码
上一步安装脚本执行输出的日志中告诉我们如何更改密码了
![](http://upload-images.jianshu.io/upload_images/1899977-ccd379696682e6c6.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
但是如果直接执行这两条命令就会报错
![](http://upload-images.jianshu.io/upload_images/1899977-151811b1ccfd6b75.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
因为这时还没有启动mysql,这算是一个坑。启动方法如下:
./support-files/mysql.server start
![](http://upload-images.jianshu.io/upload_images/1899977-31eacd5fca58b5b5.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
如果MySQL启动报错,则可能是已经存在MySQL进程,杀掉即可
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ps aux|grep mysql
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kill -9 上边的进程号
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#或者下边一条命令即可杀掉所有MySQL进程
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ps aux|grep mysql|awk '{print $2}'|xargs kill -9
![](http://upload-images.jianshu.io/upload_images/1899977-6572db71fdf5faa7.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
杀掉后再启动即可。
![](http://upload-images.jianshu.io/upload_images/1899977-f417bdc69058de74.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
MySQL启动之后再执行如下命令更改密码:
./bin/mysqladmin -u root -h localhost.localdomain password 'root'
![](http://upload-images.jianshu.io/upload_images/1899977-d1a1c4478febf199.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
密码更改后即可登录MySQL
./bin/mysql -h127.0.0.1 -uroot -proot
![](http://upload-images.jianshu.io/upload_images/1899977-c22b674ff3f96009.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
登录之后将其他用户的密码也可改为root
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update mysql.user set password=password('root') where user='root';
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flush privileges;
![](http://upload-images.jianshu.io/upload_images/1899977-010a473ab72f59fc.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
7、增加远程登录权限
上一步即可本地登录,但远程登录会报错
![](http://upload-images.jianshu.io/upload_images/1899977-2185d688960a5413.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
为解决这一问题,需要本地登陆MySQL后执行如下命令
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grant all privileges on *.* to root@'%' identified by 'root';
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flush privileges;
![](http://upload-images.jianshu.io/upload_images/1899977-8488efcf4d8d96a1.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
执行之后即可远程登录
![](http://upload-images.jianshu.io/upload_images/1899977-45f2148fec4a53af.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
8、将MySQL加入Service系统服务
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cp support-files/mysql.server /etc/init.d/mysqld
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chkconfig --add mysqld
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chkconfig mysqld on
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service mysqld restart
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service mysqld status
![](http://upload-images.jianshu.io/upload_images/1899977-e8c7c78c63097796.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
![](http://upload-images.jianshu.io/upload_images/1899977-ba65cfbc31d07567.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
9、配置my.cnf
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vim my.cnf
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default-character-set=utf8
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lower_case_table_names=1
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max_allowed_packet=100M
![](http://upload-images.jianshu.io/upload_images/1899977-d145484bd42a4b63.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
配置好之后,重启mysqld服务
![](http://upload-images.jianshu.io/upload_images/1899977-c7178785535c5175.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)