$ ssh-keygen -t rsa -b 4096
Generating public/private rsa key pair.
Enter file in which to save the key (/home/gean/.ssh/id_rsa): <ENTER>
Created directory '/home/gean/.ssh'.
Enter passphrase (empty for no passphrase): <ENTER>
Enter same passphrase again: <ENTER>
Your identification has been saved in /home/gean/.ssh/id_rsa
Your public key has been saved in /home/gean/.ssh/id_rsa.pub
The key fingerprint is:
SHA256:FLDPaT4OL7Zdownz6uLB33bnCCCZ0qcFFCQ8WTcbaaQ gean@kube-ctrl-pl-01.juntotelecom.com.br
The key's randomart image is:
+---[RSA 4096]----+
| ..+=o*o.        |
|  +o oo= .       |
|   .E.o .        |
|   . + + .       |
|  . = + S        |
|   o = +         |
|    + + + o      |
|    .ooX.*.o.    |
|   ..+==O..o.    |
+----[SHA256]-----+

$ ls ~/.ssh/
id_rsa  id_rsa.pub

$ cat ~/.ssh/id_rsa.pub
ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQDNmhcsJg8knKZFM4yaDtEMk1p3uJgPxxWcMCcn7BfP5oIopIz6quPD6t2E+lWIrqeW63npMt5VDqbztrs/oYC87dpxPnjGEcD8qhxemgJC7g9Vnb53xgdDSQa/nWJ/gdkcm+Q+mlYtU4GF2F4p2qUUjeERJB/PGvlmkh6/WxdX5yAps7yaZD81IXL1rNkYqV2JYH4DHsGOGlTer0aLrrwk+Ix+u3D3jE7QstES7g1ez/rpkRviNGdn349TQWUVzh/m8IqRozjMrGJcMsF55mk67CtyG/7475f8E+hoLwp3Nz29Ui3ao43sewhmkDQHQlLtGVBy7d5zjXf8olhutVlHy1KXwVMR6ar3arEZUjoZikyZfuksH2SpErHS6ENMWMv6g+Pejk1PurxsMCqeTU87PaG9nIDWDIV/H/2Y1ZfbWNMh7tB/gSStrFwOqYPbhjzOASIfCnUDta2IjtOurtuxX8gViLtWWlNYtmefRyjehSfGvhastECKjfcLbEOzWNwhp6BTVxKEyHXlInGSJUYwX3phKQ0/LqO4O655TtyNDmRpqzIcv0P8GJWd1tBuK4oE2Vk6simRF01AjYN56PNOfOv2n+nRWFqDNQRvplrDKeyOpVG4CWubcuN+cVa1Z1AXSerfW7TUp4QwbQZTvitkPhGtuBTcI50nFzqWz+UKbw== gean@kube-ctrl-pl-01.juntotelecom.com.br

$ ssh-copy-id 177.75.176.41
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/home/gean/.ssh/id_rsa.pub"
The authenticity of host '177.75.176.41 (177.75.176.41)' can't be established.
ECDSA key fingerprint is SHA256:voXZj8/DCBp7boSjQt0eZOD5/rtpc6ixh5OVtSdDqQk.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
/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
gean@177.75.176.41's password: <ENTRE COM A SENHA>
 
Number of key(s) added: 1
 
Now try logging into the machine, with:   "ssh '177.75.176.41'"
and check to make sure that only the key(s) you wanted were added.

$ ssh 177.75.176.41
Linux kube-worker-01.juntotelecom.com.br 5.10.0-13-amd64 #1 SMP Debian 5.10.106-1 (2022-03-17) x86_64
 
The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.
 
Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
Last login: Sat Apr 16 11:02:43 2022 from 2804:694:3000:4001::1000

$ ls .ssh/
authorized_keys

$ cat .ssh/authorized_keys
ssh-rsa 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 gean@kube-ctrl-pl-01.juntotelecom.com.br