CentOS generates passwords with SSH password-free login between Linux

Mister into RSA's password

SSH-KEYGEN-T RSA

Directory Assignment permissions

chmod 755 ~/.ssh

chmod 644 ~/.ssh/authorized_keys

Copy the pub key to the remote server, the recommended FQDN and IP are copied, so that the system can join the known host

Ssh-copy-id-i ~/.ssh/root_rsa.pub 192.168.209.163

Copy Success Bird

Then you can ssh out of the Linux ssh from the password.

Sure, remember to check yourself on that server before you hit the command.

and exit SSH with exit.

CentOS generates passwords with SSH password-free login between Linux