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[root@node2 ~]# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:8J+Qb6RCwBdjPQmeoLaUYt9lK4Hc/RSzwVbu8hrkHfk root@node2
The key’s randomart image is:
±–[RSA 2048]----+
| . =o.=… |
| .+o+.++o* |
|…=ooo=+.+ . |
|.+…o+o+… . |
| … o…S+.+ |
| … o*+.o |
| . .o=o E |
| . .o |
| . |
±—[SHA256]-----+
[root@node2 ~]# ssh-copy-id root@192.168.0.109
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: “/root/.ssh/id_rsa.pub”
/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed
/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed – if you are prompted now it is to install the new keys
root@192.168.0.109’s password:
Number of key(s) added: 1
Now try logging into the machine, with: “ssh ‘root@192.168.0.109’”
and check to make sure that only the key(s) you wanted were added.
[root@node2 ~]# ssh root@192.168.0.109
Last login: Sat Oct 16 16:11:48 2021 from 192.168.0.129
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