https://blog.csdn.net/qq_30758673

下载安装mysql卸载自带的迷你库
rpm -qa | grep mariadb | xargs rpm -e --nodeps下载yum镜像下载源
wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm安装yum下载源
yum -y install mysql57-community-release-el7-10.noarch.rpm开始下载
yum -y install mysql-community-server

启动MySQL服务

systemctl start mysqld.service

设置mysql自启

systemctl enable mysqld.service

首次登录mysql设置root用户名密码初始密码在/var/log/mysqld.log

grep "password" /var/log/mysqld.log

输入初始密码进入数据库

mysql -uroot -p

设置密码密码安全级别

SET global validate_password_policy=0;

设置密码长度

set global validate_password_length=1;

添加root用户

ALTER USER 'root'@'localhost' IDENTIFIED BY 'root';

设置外部主机访问本地数据库

GRANT ALL PRIVILEGES ON . TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;

刷新设置
flush privileges;