SSH keys
Log in without a password.
An SSH key pair is safer than a password. On your computer run: ssh-keygen -t ed25519. This makes two files; the one ending in .pub is the public key.
Add the public key under SSH keys in your account, then pick it when you create a server. You can then log in with ssh root@YOUR_SERVER_IP without a password.
Keep the private key (the file without .pub) on your computer only.