Deploy key fingerprint already taken

You will have to get into the server and change the permission to log into it with a password. Once in, you will need to add your key and then change the ssh login back to key. I have had to do it on a few projects that I inherited and took me forever to figure it out. It is no simple task. The hardest part is using the vendor console to get a root prompt.

For DO, I use the vm console to get a root prompt...that is usually trouble but eventually it will work. Then look for sshd_config and change the PasswordAuthentication to yes. then run sudo /etc/init.d/ssh restart. Then, from your terminal, log into the server vis ssh and password. The, add keys as a sudoer for root and forge users in `authenticate_keys. After that, go back and change the password authentication to no in sshd_config. That will work on most vm's managed by forge.

Thank you for responding @ejdelmonico

Okay that sounds if I need the root password for the server, which I don't have?

So will deployment work if the other developer removes the deployment key from his account, and I add this deployment key to my account?

You need to add your computer key to forge. And you going to need the passwords for the forge user and the DB user named forge.

Thank you @ejdelmonico! That was exactly what I've done. All is working now.