1、版本：mysql-5.7.20-1.el7.x86_64.rpm-bundle.tar

安装依赖

yum remove mariadb-libs //删除 mariadb相关内容

yum install perl

yum install numactl

yum install libaio

yum install net-tools

解压mysql安装包

tar -xvf mysql-5.7.20-1.el7.x86_64.rpm-bundle.tar

安装

rpm -ivh commom ---- lib ------- client-------server

按顺序逐一安装完成

image-20201105151855183.png

修改数据地址

vim /etc/my.cnf

image-20201105152043608.png

SELINUX设置

vim /etc/selinux/config

把SELINUX的参数修改成disabled即可：

image-20201105152208592.png

创建数据存放目录

mkdir /opt/mysqldata

目录授权

chown -R mysql:mysql /opt/mysqldata

启动数据库

systemctl start mysqld.service

查看临时密码

grep 'temporary password' /var/log/mysqld.log

登录修改密码

mysql -uroot -p

image-20201105152801751.png

alter user root@localhost identified by ‘root123’

use mysql

create user 'root'@'%' identified by 'root123';

flush privileges;

grant all on . to 'root'@'%' identified by 'root123';

flush privileges;

安装完成