CentOS下载mysql

1.选择系统和版本

https://dev.mysql.com/downloads/mysql/

2.1在/usr/local下创建mysql文件夹

2.解压压缩包

 --进入mysql文件夹
/usr/local/mysql/  
 --解压压缩包
tar -xvf mysql-8.0.28-1.el7.x86_64.rpm-bundle.tar

3.安装mysql

rpm -ivh mysql-community-common-8.0.28-1.el7.x86_64.rpm --nodeps --force
rpm -ivh mysql-community-libs-8.0.28-1.el7.x86_64.rpm --nodeps --force
rpm -ivh mysql-community-client-8.0.28-1.el7.x86_64.rpm --nodeps --force
rpm -ivh mysql-community-server-8.0.28-1.el7.x86_64.rpm --nodeps --force

4.初始化和配置mysql

mysqld --initialize
chown mysql:mysql /var/lib/mysql -R
systemctl start mysqld.service
systemctl enable mysqld

5.获取临时密码

 --获取临时密码
cat /var/log/mysqld.log 

6.登录修改密码

 --登录
 mysql -uroot -p*h8sevboeB+e 
 --修改密码
 ALTER USER 'root'@'localhost'IDENTIFIED WITH mysql_native_password BY'root'; 

7.新密码登录 获取远程访问授权

--登录mysql
mysql -uroot -proot 

--获取远程访问授权
create user 'root'@'%'identified with mysql_native_password by 'root';

grant all privileges on *.* to 'root'@'%' with grant option;

flush privileges;

8.开放端口或者关闭防火墙

开放3306端口 --推荐

  --开放3360端口
 firewall-cmd --zone=public --add-port=3306/tcp --permanent
  -- 关闭3360端口 
 firewall-cmd --zone=public --remove-port=3306/tcp --permanent
  -- 重新载人
 firewall-cmd --reload

 --重启mysql
service mysqld restart 

关闭防火墙 --不推荐不安全

关闭防火墙
systemctl stop firewalld.service

关闭防火墙 --不推荐不安全

关闭防火墙
systemctl stop firewalld.service

9.连接测试