SSH Keys for passwordless logins to other servers
SSH Keys are an awsome tool.. and they’ll save your fingers from typing your password 10,000 times a day. They’re also really easy to setup:
login to your main server, or home machine as the user you normally are logged in as.
username@yourserver.com [16:00:51]
[~/.ssh]: /usr/bin/ssh-keygen -t dsa
Generating public/private dsa key pair.
Enter file in which to save the key (/home/username/.ssh/id_dsa): [ENTER]
Enter passphrase (empty for no passphrase): [ENTER]
Enter same passphrase again: [ENTER]
Your identification has been saved in /root/.ssh/id_dsa.
Your public key has been saved in /root/.ssh/id_dsa.pub.
The key fingerprint is:
ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:1e:00:fb:d5:57:45:20:c3 username@yourserver.com
username@yourserver.com [16:00:59]
[~/.ssh]: cat id_dsa.pub
ssh-dss [EDITED OUT HUGE TEXT HASH ] username@yourserver.com
Copy the entire output from your server to your clipboard.
Now login to the remote server you want to be able to access without a password and:
$ vi ~/.ssh/authorized_hosts
go to the bottom of the file and insert and paste the line, then [ESC] [ESC] :wq!
and give it a test
$ ssh username@remoteserver.com