1.将mysql的包上传到root下(哪里都行) (MySQL-server-5.5.47-1.linux2.6.x86_64.rpm 服务器 ,MySQL-client-5.5.47-1.linux2.6.x86_64.rpm 客户端)
下载链接:链接:https://pan.baidu.com/s/1TuWR6kceNNOcy0H_LEEftQ 密码:p8gl
2.卸载原有的数据库
rpm -qa | grep mysql
rpm -e mysql-libs-5.1.66-2.el6_3.i686 --nodeps
rpm -ivh MySQL-server-5.1.73-1.glibc23.i386.rpm
rpm -ivh MySQL-client-5.1.73-1.glibc23.i386.rpm
3.执行 rpm -ivh MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
报错:Failed dependencies: /usr/bin/perl is needed by MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
libaio.so.1()(64bit) is needed by MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
libaio.so.1(LIBAIO_O.1) is needed by MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
libaio.so.1(LIBAIO_O.4) is needed by MySQL-server-5.5.47-1.linux2.6.x86_64.rpm
原因:缺少依赖的库
解决:使用yum list | grep perl 找到包使用 yum -y install perl.x86_64安装
yum -y install libaio.x86_64在重新执行安装mysql的语句
4.开启服务 service mysql start
修改mysql的密码 /usr/bin/mysql_secure_installation
执行这个脚本,跟着设置即可 （注意：删除匿名用户，允许用户远程连接）
Enter current password for root (enter for none): 这里开始没有密码,什么都不需要输入
set a new root password? 输入Y
enter a new root password:输入密码
Remove anonymous users? [Y/n] 是否需要你们用户,输入n
Disallow root login remotely? [Y/n] 是否不允许远程登录,输入n 后面的都输入Y即可
