For centos remote login, you do not need to enter the account password

You can log on directly without entering the account password when switching to logon.

SSH remote login without entering the account password

1 ssh-keygen-t rsa // host input on the terminal for creating a key

2 ssh-copy-ID-I/root/. Ssh/id_rsa.pub "-P 22 root@192.168.1.65"

// Copy the key to the client/root/ssh/id_rsa.pub/host key location

"-P 22 root@192.168.1.65" // copy key to client/root/ssh/id_rsa.pub/host key location

-P 22 indicates that the port root is the client account @ 192.168.1.65 and the client IP address to be sent