Adding additional SSH key to existing Droplet

Hello, @geochanto

You can make sure that the correct ssh-key is used for the connection. If you’re using ssh-client (terminal) you can use ssh -i to specify the exact ssh-key you want to use for the connection. An example is:

ssh -i ~/.ssh/id_rsa root@DropletIP

You can also use the -v argument in order to get a more verbose output:

ssh -vvv -i ~/.ssh/id_rsa root@DropletIP

You can also check our tutorial on How to Connect to Droplets with SSH:

https://docs.digitalocean.com/products/droplets/how-to/connect-with-ssh/

You can also make sure that the file/folder permissions are okay

• Your home directory ~, your ~/.ssh directory and the ~/.ssh/authorized_keys file on the remote machine must be writable only by you: rwx------ and rwxr-xr-x are fine, but rwxrwx--- is no good, even if you are the only user in your group (if you prefer numeric modes: 700 or 755, not 775).

• If ~/.ssh or authorized_keys is a symbolic link, the canonical path (with symbolic links expanded) is checked.

• Your ~/.ssh/authorized_keys file (on the remote machine) must be readable (at least 400), but you’ll need it to be also writable (600) if you will add any more keys to it.

• Your private key file (on the local machine) must be readable and writable only by you: rw——- , i.e. 600.

Regards, Alex