[root@localhost ~]# rpm -e mysql mysql-server mariadb mariadb-server
.确保系统中有依赖的libaio软件
[root@localhost ~]# yum -y install libaio
将源码包上传到系统里
[root@localhost ~]# rz
mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz
或者
wget http://mirrors.sohu.com/mysql/MySQL-5.7/mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz
解压到指定目录，可以换个名字mysql
[root@localhost ~]# tar xf mysql-5.7.24-linux-glibc2.12-x86_64.tar.gz -C /usr/local/
[root@localhost ~]# cd /usr/local/
[root@localhost local]# mv mysql-5.7.24-linux-glibc2.12-x86_64/ mysql
添加mysql用户和组，修改目录拥有者的权限
[root@localhost local]# useradd -M -s /sbin/nologin mysql
[root@localhost local]# cd mysql/
[root@localhost mysql]# chown -R mysql:mysql ./
初始化mysql数据库（建立默认的库和表）记录随机密码
[root@localhost mysql]# ./bin/mysqld --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data –initialize
修改配置文件，启动mysql服务
[root@localhost mysql]# vim /etc/my.cnf
[mysqld]
datadir=/usr/local/mysql/data
socket=/tmp/mysql.sock
security risks
symbolic-links=0
[mysqld_safe]
log-error=/usr/local/mysql/data/mysql.log
pid-file=/usr/local/mysql/data/mysql.pid
!includedir /etc/my.cnf.d
将mysqld服务添加到系统服务中，基于权限，方便管理
[root@localhost mysql]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
[root@localhost mysql]# chmod +x /etc/init.d/mysqld
[root@localhost ~]# systemctl start mysql
[root@localhost mysql]# ln -s /usr/local/mysql/bin/* /usr/local/bin/
设置mysql管理用户和密码，尝试用新密码登录
[root@localhost mysql]# mysqladmin -uroot -p’>Vy?5hrnqqh8’ password ‘123456’
[root@localhost mysql]# mysql -uroot -p’123456’
mysql> exit
Bye