Connect to a host via SSH without entering the password

generate a new ssh key if you don’t have one

ssh-keygen -t ed25519

copy the content displayed with

cat ~/.ssh/id_ed25519.pub

enter the host via SSH

In the root there should be a hidden folder called .ssh, if it doesn’t exist create it

mkdir -p ~/.ssh

copy the generated ssh-key into

~/.ssh/authorized_keys

Done, then you can connect to the host without entering a password