#查看已安装的的mysql

shell>rpm -qa|grep -i mysql

#根据上条命令的结果卸载mysql

shell>rpm -e -nodeps mysql*

#下载mysql的server和client

shell>cd /usr/local

shell>wget http://cdn.mysql.com/Downloads/MySQL-5.6/MySQL-server-5.6.23-1.el6.x86_64.rpm

shell>wget http://cdn.mysql.com/Downloads/MySQL-5.6/MySQL-client-5.6.23-1.el6.x86_64.rpm

#安装mysql

shell>rmp -ivh MySQL-server-5.6.23-1.el6.x86_64.rpm

shell>rpm -ivh MySQL-client-5.6.23-1.el6.x86_64.rpm

#重新启动mysql并用mysqladmin设置root密码

shell>service mysql restart

shell> mysqladmin -u root password "123456"

ps:

tnnd，到这步不行了,报错：

mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: NO)'

解决：

　　#先停止mysql服务

shell>service mysql stop;

#采用安全方式登录

shell>mysqld_safe --user=mysql --skip-grant-tables --skip-networking &

#然后输入命令mysql -u root mysql进去mysql提示符

mysql>update user set password=password('12345') where user='root';

mysql>flush privileges;

mysql>quit;

#重启mysql服务

shell>service mysql restart

#登录myesql

shell>mysql -uroot -p

尼玛装了3天的mysql终于貌似可以了，下一步写个jdbc连接下看看，先设置mysql允许远程登录：

#登录到mysql

shell>mysql -u root -p

#切换数据库

mysql>use mysql;

ps:晕，注意这里有肯提示你设置密码，那就设置一下好了

mysql>set password=password('123456');

#更改表：

mysql>update user set host='%' where host='localhsot';

mysql>quit;

#重启mysql

shell>service mysql restart;

ps:然后再一台windws机子是telnet了一下，即在cmd窗口中运行:telnet 192.168.100.240 3306,o了!!!