CentOS 6.5下升级mysql5.1，以及从5.1升级到5.7

1.安装mysql-server

yum install mysql-server

2.备份数据库

mysqldump -u xxx -h xxx -P 3306 -p --all-databases > databases.sql

3.停止mysql服务

service mysqld stop

4.卸载旧版的mysql

yum remove mysql mysql-*

5.查看已安装的mysql扩展，并卸载

rpm -qa¦grep mysql
yum remove mysql mysql-server mysql-libs compat-mysql51
yum list installed | grep mysql
yum remove mysql－libs

6.安装mysql5.7

rpm -Uvh http://repo.mysql.com/mysql-community-release-el6-5.noarch.rpm[/code] 
6.1安装
yum install mysql-community-server


7.查看版本号
mysql -v


8.启动mysql服务
service mysqld start


9.初始化mysql5.7
mysqld --initialize
rm -rf /var/lib/mysql
service mysqld start


10.启动服务的时候根据提示修改密码
/usr/bin/mysqladmin -u root password '123456'


11.状态设置
chkconfig mysqld on
chkconfig --list
netstat -antp
service mysqld status