1. mysql开启远程登录

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#删除之前配置
drop user 'root'@'%';
#配置远程登录
CREATE USER 'root'@'%' IDENTIFIED BY '123456'; 
GRANT ALL ON *.* TO 'root'@'%'; 
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '12345';

2.刷新权限

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FLUSH PRIVILEGES;
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo