1.从官网https://dev.mysql.com/downloads/repo/yum/获取下载链接,并用wget下载
wget https://repo.mysql.com//mysql80-community-release-el7-2.noarch.rpm
2. 安装Mysql及其服务
sudo rpm -ivh mysql80-community-release-el7-2.noarch.rpm
yum install -y mysql mysql-server
3.启动服务
sudo systemctl start mysqld
4.搜寻mysql root用户初始密码(mysql在安装后会创建一个root@locahost账户,并且把初始的密码放到了/var/log/mysqld.log文件中)
cat /var/log/mysqld.log | grep password
5.设置root用户密码(mysql8.0以上密码策略限制必须要大小写加数字特殊符号)
mysql -uroot -p
(先输入刚才获得的密码)
ALTER USER 'root'@'localhost' IDENTIFIED BY 'Newpass@123';
6.退出mysql登陆
mysql退出的三种方法: mysql > exit; mysql > quit; mysql > \q;