SSH

Secure SHell

Tweak

키 생성 및 복사

$ ssh-keygen [root@host ~]# ssh-copy-id node1 

.ssh/confg

$ vim ~/.ssh/config host node1 node1.group node1.group.domain.com
   hostname node1.group.domain.com
   user root
   ForwardX11 yes
$ chmod 0600 ~/.ssh/config 

DNS 미사용

$ vim /etc/ssh/sshd_config useDNS no