Centos 7安装Mysql5.7

1.下载（国内镜像，比搜狐的快一点）：http://mirrors.ustc.edu.cn/mysql-ftp/Downloads/MySQL-5.7/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz

2.依赖

yum install libaio

3.

groupadd mysql
useradd -r -g mysql -s /bin/false mysql
cd /usr/local
tar zxvf /path/to/mysql-VERSION-OS.tar.gz
ln -s full-path-to-mysql-VERSION-OS mysql
cd mysql
scripts/mysql_install_db --user=mysql
bin/mysqld_safe --user=mysql &
#回车cp support-files/mysql.server /etc/init.d/mysql.server

4. 加入skip-grant-tables（跳过权限）

vi /etc/my.cnf
[mysqld]
skip-grant-tables

5.启动服务

systemctl start mysql

6.

 mysql -u root -p

无密码，直接回车

7.修改密码

use mysql;
update mysql.user set authentication_string=password('') where User='root' and Host='localhost';

8.设置密码不过期，不然没法登陆

update user set password_expired='N' where user='root';
flush privileges;

9.退出后在，/etc/my.cnf中 将权限过滤的那条删除（注释）

#删除skip-grant-tables
#skip-grant-tables

10.重启mysql服务

systemctl restart mysql

11.登陆后启动远程访问

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