虚拟机：CentOS 7安装MySQL5.7的步骤

1、下载rpm包：wget http://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

2、执行rpm包：rpm -Uvh mysql57-community-release-el7-11.noarch.rpm

3、安装mysql:yum install mysql-community-server

4、启动mysql：service mysqld start（systemctl start mysqld.service）

5、设置开机启动：systemctl enable mysqld.service

6、查看启动状态：systemctl status mysqld.service

7、查看密码：grep ‘temporary password’ /var/log/mysqld.log7、跳过密码复杂程度，进入/etc/my.cnf文件在末尾添加：validate_password = off，（设置mysql不区分大小写在［mysqld］之后添加：lower_case_table_names=1）重启mysql服务

8、修改密码：set password =password（‘root’）;

9、开启远程访问：grant all privileges on *.* to ‘root’ @‘%’ identified by ‘root’;

10、刷新权限：flush privileges;

11、查看mysql数据库编码： show variables like ‘character%’;

12、设置编码格式为utf8：在/etc/my.cnf文件中的［mysqld］之前添加［client］ default-character-set=utf8，在［mysqld］之后添加 character-set-server=utf8

13、重启mysql:systemctl restart mysqld.service/**********防火墙**********/1、查看开放端口：firewall-cmd --list-ports2、开启端口号：firewall-cmd --zone=public --add-port=80/tcp --perman