1.创建mysql存放目录

mkdir -p /www/luke/mysql
cd /www/luke/mysql

2.配置Mysql扩展源

rpm -ivh http://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql57-community-release-el7-10.noarch.rpm

3.yum安装mysql

yum install mysql-community-server -y

4.启动Mysql，并加入开机自启

systemctl start mysqld
systemctl stop mysqld
systemctl enable mysqld

5.使用Mysq初始密码登录数据库

mysql -uroot -p$(awk '/temporary password/{print $NF}' /var/log/mysqld.log)

6.修改数据库密码安全级别

set global validate_password_policy=0;

set global validate_password_length=1;

7.修改密码

set password for root@localhost = password('root');

8.登录测试

mysql -uroot -proot

9.可视化工具的登录授权

grant all privileges on *.* to 'root'@'%' identified by 'root' with grant option;