ssh password less authentication

[root@workstation ~]# 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:QPiGTK1JYF1CP+X5IQshXH8Oi3rn2O36olrvWxIiKWc root@workstation

The key's randomart image is:

+---[RSA 3072]----+

|?o=+== .????|

| .?*=.= .????|

|??+ == * o???|

|??=.o= O .???|

|?. E.o S o???|

|??+ o . .????|

|??. o o .???|

|???o *.+????|

|??..ooB*+???|

+----[SHA256]-----+

[root@workstation ~]# ssh-copy-id root@servera

/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@servera's password:?

Number of key(s) added: 1

Now try logging into the machine, with:??"ssh 'root@servera'"

and check to make sure that only the key(s) you wanted were added.

[root@workstation ~]# ssh root@servera

Last login: Wed Jul 19 15:48:27 2023 from 192.168.122.59

[root@servera ~]#