centOs7安装mysql5.7

1.下载并安装MySQL

命令：wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

           yum localinstall mysql80-community-release-el7-1.noarch.rpm

2.安装mysql

命令: yum install mysql-community-server

3.启动

命令：systemctl start mysqld

4.查看启动状态

命令：systemctl status mysqld

5.修改密码

1）查看原始密码：

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

2）登录本地mysql

命令：mysql -uroot -p

输入原密码；

3）修改密码

命令：ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';

注意新密码要复杂一点，不然会报错；

6.添加远程登录用户

1）查看当前用户的权限

命令：use mysql;

           select host, user from user;

2）授权root可以远程访问

命令：GRANT ALL ON *.* TO 'root'@'%';

如果报错用下面的命令

命令：update user set host='%' where user ='root';

3）flush privileges;