下载并安装MySQL官方的Yum Repository
[root@hadoop-100 software]# wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
[root@hadoop-100 software]# yum -y install mysql57-community-release-el7-10.noarch.rpm
[root@hadoop-100 software]# yum -y install mysql-community-server
MySQL数据库设置
启动MySQL
[root@hadoop-100 software]# systemctl start mysqld.service
查看MySQL运行状态
[root@hadoop-100 software]# systemctl status mysqld.service
查看MySQL运行状态.png
获取此时root用户的密码
[root@hadoop-100 software]# grep "password" /var/log/mysqld.log
初识密码.png
进入数据库
[root@hadoop-100 software]# mysql -u root -p
修改初始密码
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';
此时，如果新密码太简单，会报错
修改使可以设置简单密码
set global validate_password_policy=0;
set global validate_password_length=1;
重新修改密码即可
卸载MySQL官方的Yum Repository
yum -y remove mysql57-community-release-el7-10.noarch
