Setup SSH keys but server still prompts for password?

Question

Hello,

I followed the SSH Keys tutorial here at DO but the server still prompts for my user password (not passphrase) when I login. I checked ~/.ssh/authorized_keys and there is only 1 line so it looks like the key copied over OK. I am asked for my user password when I use either the HTML 5 console access program or PuTTY. I am not logging in as root, but the user account has root privileges.

I’m new to SSH so I apologize for not being able to explain the issue too well. I’m using Ubuntu 12.04 (server edition, no desktop).

Tutorial: https://www.digitalocean.com/community/articles/how-to-set-up-ssh-keys--2

idefix · Answer

Can I login with only key pairs with my sudo user (not root user)? And if yes, how? When I created the droplet I connected my previously added keys by checking the checkbox under “Add your SSH keys”. When I logged in as root it worked fine with the added keys. I added a new sudo user, switched to that account and added the public key to the sudo user (password free private key). adduser newuserusermod -aG sudosu - newusermkdir ~/.sshchmod 700 ~/.sshnano ~/.ssh/authorized_keysInserted public keychmod 600 ~/.ssh/authorized_keyschown newuser -R ~/.ssh But when I do the below command:sudo nano /etc/ssh/sshd_configThe console now asks for password (the keys are password free). What’s wrong??

Etel (Sverdlov) Friedmann · Answer

The DigitalOcean control panel SSH Keys are only for the root user. They enable you to log into your account as root, without the root password email. You can then create a new sudoer.

Logging in as the new user, even one that can use sudo, however, will still require a password.

Axel Pale · Answer

Anyone here using DSA keys and a Ubuntu 16.04 droplet (with OpenSSH 7.x by default) should note that DSA keys (pubkey starting with “ssh-dss”) are not accepted by default anymore. This issue caused problems very similar to ones described in the original question. This is understandable because if the keys are not accepted, the ssh reverts back to asking the password. See: http://superuser.com/questions/1016989/ssh-dsa-keys-no-longer-work-for-password-less-authentication https://blackbricksoftware.com/bit-on-bytes/139-dsa-keys-in-openssh-v7-ubuntu-16-04

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Setup SSH keys but server still prompts for password?

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Setup SSH keys but server still prompts for password?