I made a droplet with ssh keys selected, logged in as root perfectly fine, did "adduser demo" and "gpasswd -a demo sudo". When i try to ssh in as demo@xxx.xxx.xxx i get a "Permission denied (publickey)." but when i try again as root@xxx.xxx.xxx its perfectly fine.
You need to edit the file /etc/ssh/sshd_config and edit/add this line:
PasswordAuthentication yes
And restart sshd with the command sudo service ssh restart
@hansen thanks that worked but how do i login using ssh key? i can login with ssh key as root but have to use password as the other user?
Your sshd_config should now have these two lines (probably different positions)
PasswordAuthentication yes
PubkeyAuthentication yes
First line allows passwords, second line allows keys.
@hansen nvm i figured it out apparently you need to add the key again loggin in as new user like so "ssh-copy-id newuser@host" the ssh key you use at droplet creation is for root only apparently
Ahhh, sorry, I misunderstood your question then. I thought that you wanted to be able to login with password. Someone just asked that question a few minutes before.
I would highly recommend only using keys and disabling the password access for all users.