ssh -i ~/.ssh/seoul-notification-dev.pem ec2-user@52.79.58.125
ssh -CqTnN -D localhost:7080 -i ~/.ssh/seoul-notification-dev.pem ec2-user@52.79.58.125
export http_proxy=socks5://127.0.0.1:1080
vi /etc/yum.conf
proxy=socks5://109.105.32.32:7070