Centos6.5 yum 安装MySQL5.5 并修改数据库路径_linux教程_开发教程

Webtatic EL6 for CentOS/RHEL 6.x

1、添加源

rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm

rpm -Uvh https://mirror.webtatic.com/yum/el6/latest.rpm

2、安装mysql5.5

yum install mysql55w mysql55w-server

安装完成后查看数据库安装的位置（这个版本的的数据分了好多文件夹，但是以/var/lib/mysq为主）

[root@localhost ~]# find / -name mysql

/var/lib/mysql

/usr/share/mysql

/usr/lib64/mysql

/usr/lib64/perl5/auto/DBD/mysql

/usr/lib64/perl5/DBD/mysql

/usr/bin/mysql

3、更换数据库位置

[root@localhost opt]# cp -rf /var/lib/mysql /opt/

修改my.cnf

原配置文件

[root@localhost ~]# vi /etc/my.cnf

[mysqld]

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

user=mysql

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

symbolic-links=0

[mysqld_safe]

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

修改为

datadir=/opt/mysql

socket=/opt/mysql/mysql.sock

user=mysql

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

symbolic-links=0

[mysqld_safe]

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

在启动 mysqld： [确定]

[root@localhost opt]# chkconfig mysqld on

[root@localhost opt]# service mysqld start

正在启动 mysqld： [确定]

[root@localhost opt]# mysql -u root

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

如果是权限问题，则先改变权限 #chown -R mysql:mysql /opt/mysql

发现还是报错，在my.cnf中加入

[client]

socket=/opt/mysql/mysql.sock

ps:在迁移数据的时候遇到各种错误，参考了很多文章

(责任编辑：好模板)