centos7.6安装mysql8.0

1.下载MySQL yum源

wget https://dev.mysql.com/get/mysql80-community-release-el7-1.noarch.rpm

2.安装yum源

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

3.更新yum源

yum clean all
yum makecache

4.创建Mysql账户

groupadd mysql
useradd -g mysql mysql

5.开始安装MySQL

yum install mysql-community-server

6.启动MySQL

systemctl start mysqld

7.查看初始化密码

cat /var/log/mysqld.log | grep password

8.登录MySQL

mysql -u root -p

9.修改初始化密码（密码一定要大小写字母+数字+符号，如：Aa-123456789）

ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘yourpassword‘;

10.远程设置

use mysql;
update user set host=‘%‘ where user=‘root‘;

11.允许任何主机访问数据库

GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘WITH GRANT OPTION;
FLUSH PRIVILEGES;

12.允许myuser用户使用mypassword密码从任何主机连接到mysql服务器

GRANT ALL PRIVILEGES ON *.* TO ‘myuser‘@‘%‘IDENTIFIED BY ‘mypassword‘ WITH GRANT OPTION;

13.允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器，并使用mypassword作为密码

GRANT ALL PRIVILEGES ON *.* TO ‘myuser‘@‘192.168.1.3‘IDENTIFIED BY ‘mypassword‘ WITH GRANT OPTION;

报错备注
ERROR 1045 (28000): Access denied for user ‘root‘@‘localhost‘ (using password: YES)
解决：/etc/my.cnf 下[mysqld]后添加 skip-grant-tables

ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement
解决：刷新权限：flush privileges;

最后补充：密码设置简单报错解决：

1.查看当前安全变量值

mysql> SHOW VARIABLES LIKE ‘validate_password%‘;

2.修改变量

注意到8.0 比5.7多了带“.”的变量导致只设置一半是不够的，

set global validate_password.policy=0;
set global validate_password.length=4;

然后退出后再执行

mysql_secure_installation

继续重置root密码就可以设置为123456了；

centos7.6安装mysql8.0

原文：https://www.cnblogs.com/wehappy/p/12563594.html