Centos8安装mysql8并远程连接

查看卸载已安装得mysql

rpm -qa |grep -i mysql

yum remove mysql mysql-server mysql-libs compat-mysql5

下载mysql80的rpm文件

从官网下载所需的安装包https://downloads.mysql.com/archives/community/

wget https://repo.mysql.com//mysql80-community-release-el8-1.noarch.rpm

使用yum安装mysql服务,并查看服务是否开机启动

yum install mysql-server
systemctl list-unit-files|grep mysqld

设置开机启动

systemctl enable mysqld.service

查看是否开机启动

systemctl list-unit-files|grep mysqld

查看mysql是否启动MySQL服务

ps -ef|grep mysql

启动mysql服务

systemctl start mysqld.service 
ps aux|grep mysql

进入mysql客户端（mysql8版本初次安装无需账号密码即可直接登陆）

mysql

修改账号密码

ALTER USER root@localhost IDENTIFIED BY root;

进入mysql数据库，跟新user表中root用户任何地址都可以访问（默认只能本机访问）,并退出mysql

use mysql;
UPDATE user SET Host = % WHERE User= root LIMIT 1;
-- 刷新配置
flush privileges;
exit

用修改的密码进入mysql试试

mysql -h127.0.0.1 -uroot -pC*******789

查看mysql运行状态，重启mysql（一定要重启mysql远程连接才可以连接上）

systemctl stop mysqld.service
systemctl start mysqld.service
systemctl status mysqld.service

云服务器配置一个安全组让其可以访问3306端口

本地机连接mysql成功