CentOS 6.8 32位 安装mysql8

1.清理掉之前安装过的mysql

rpm -qa | grep mysql
mysql-libs-5.1.52-1.el6_0.1.x86_64

yum remove mysql-libs-5.1.52-1.el6_0.1.x86_64

rm -fr /var/lib/mysql/*
rm /var/lock/subsys/mysqld
killall mysqld

　　

2.yum源安装MYSQL

wget https://repo.mysql.com//mysql80-community-release-el6-1.noarch.rpm
rpm -ivh mysql80-community-release-el6-1.noarch.rpm

yum clean all
yum makecache
yum install mysql-community-server

3.启动MySQL

/etc/init.d/mysqld start

4.如果启动成功请忽略，如果启动mysql报错 mysqld：unrecognized service

可能是mysql-server没有安装

rpm -q mysql

安装mysql的server端

yum install mysql-server

然后再输入/etc/init.d/mysqld start  启动成功

5.登录前先找到默认登陆密码

grep "password" /var/log/mysqld.log

6.登陆　

 mysql -u root -p

然后输入默认的登陆密码

7.navicat  连接阿里云服务器上的MySQL

修改密码，mysql8.0以上密码策略限制必须要大小字母写加数字特殊符号

ALTER USER 'root'@'localhost' IDENTIFIED BY '新密码要复杂';

修改root的host为%

update user set Host='%' where User='root';

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '数据库密码'; 
FLUSH PRIVILEGES;

设置安全组规则：

（觉得图片看不清，请Ctrl+鼠标滚动）

然后navicat数据用户名和密码 就可以登录了

CentOs防火墙 https://blog.csdn.net/u014110320/article/details/82977627

参考https://blog.csdn.net/zzzgd_666/article/details/81458630