一. 如何安装MySQL 8.0
二. Navicat连接MySQL
一. 如何安装MySQL 8.0安装Mysql有两种方式：
直接下载官方的源（比较慢）
https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm # 下载rpm包 yum localinstall mysql80-community-release-el7-1.noarch.rpm # 处理相关依赖 yum install mysql-community-server # 安装用163的源，分开安装
wget https://mirrors.163.com/mysql/Downloads/MySQL-8.0/mysql-community-common-8.0.18-1.el7.x86_64.rpm wget https://mirrors.163.com/mysql/Downloads/MySQL-8.0/mysql-community-libs-8.0.18-1.el7.x86_64.rpm wget https://mirrors.163.com/mysql/Downloads/MySQL-8.0/mysql-community-client-8.0.18-1.el7.x86_64.rpm wget https://mirrors.163.com/mysql/Downloads/MySQL-8.0/mysql-community-server-8.0.18-1.el7.x86_64.rpm rpm -ivh mysql-community-common-8.0.18-1.el7.x86_64.rpm # rpm下载 rpm -ivh mysql-community-libs-8.0.18-1.el7.x86_64.rpm rpm -ivh mysql-community-client-8.0.18-1.el7.x86_64.rpm rpm -ivh mysql-community-server-8.0.18-1.el7.x86_64.rpm重启Mysql
service mysqld start查看Mysql默认密码
cat /var/log/mysqld.log | grep password登录
mysql -uroot -p # 回车，复制上面的密码即可 二. Navicat连接Mysql连接mysql之前，先修改下root的密码
set global validate_password.policy=0; #修改策略 set global validate_password.length=1; alter user 'root'@'localhost' identified with mysql_native_password by '12345678'; # 测试环境，密码可以简单点，Mysql8.0必须用mysql_native_password给账号加密可以exit退出，重新登录看看。
修改root账号的Host，便于IP连接
use mysql; #mysql的基础表 update user set Host = '%' where User='root'; # 正式环境，可以创建新的Mysql账号，设置成具体的ip开放3306端口
firewall-cmd --add-port=3306/tcp --permanent firewall-cmd --reload下面用Navicat新建连接，即可
