Remote server u want ssh to other server w/o password:
$ ssh-keygen -t rsa -b 2048
Generating public/private rsa key pair.
Enter file in which to save the key (/home/username/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/username/.ssh/id_rsa.
Your public key has been saved in /home/username/.ssh/id_rsa.pub.
Copy your keys to the target server:
$ ssh-copy-id id@server
id@server's password:
Now try logging into the machine, with
ssh
'id@server', and check in:.ssh/authorized_keys
to make sure we haven’t added extra keys that you weren’t expecting.
Finally check logging in…
$ ssh id@server
id@server:~$
Now u can login to other remote server w/o password
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