ssh 로그인 없이 접속하기 #1

관리하는 서버에 로그인 없이 들어가기 위한 방법입니다.

ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa

cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

chmod 644 ~/.ssh/authorized_keys

ssh localhost

 

from: http://www.yongbok.net/blog/how-to-install-hadoop-2-2-0-pseudo-distributed-mode/

참고: http://www.jopenbusiness.com/mediawiki/index.php/Hadoop

위 작업을 하지 않은 경우 이런 메시지를 만나게 됩니다.

The authenticity of host 'localhost (::1)' can't be established.

RSA key fingerprint is e2:11:3e:c9:79:fb:a4:6f:d0:dd:53:d8:be:a8:7b:b4.

Are you sure you want to continue connecting (yes/no)? yes

localhost: Warning: Permanently added 'localhost' (RSA) to the list of known hosts.

hadoop@localhost's password: