$ ssh-keygen -t rsa -f ~/.ssh/[키이름] -C [gmail계정] -b 2048 $ ssh-keygen -t rsa -f ~/.ssh/gcp_ssh -C dh.kim3@okestro.com -b 2048
~중략~
ssh -i [키파일경로] [계정]@[외부IP] ssh -i ~/.ssh/gcp_ssh dh.kim3@34.64.208.175