SSH – Permission Denied for Non-Root User

centoslinuxssh

I have my digitalocean droplets setup so I can login to ssh via keyfiles. This works fine for the root account but if I create a secondary account via useradd, the only way I'm able to get into the account is via su. If I try to login with ssh using the same keyfile, I get:

Permission denied (publickey,gssapi-keyex,gssapi-with-mic)

even though I added my public key to /home/user/.ssh/authorized_keys. What to do?

This is a CentOS 7 server.

Note: I also tried adding AllowUsers exampleuser root to /etc/ssh/sshd_config.

Best Answer

Be sure to restart sshd after you've made changes to /etc/ssh/sshd_config.

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Linux – SSH doesn’t ask for password, gives “permission denied” immediately

The server has setting

 PasswordAuthentication no

Change it to yes and after a restart you'll be able to use password authentication.

SSH key exchange is not working

Try ssh -v this should provide additional information about the authentication process.

debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password,keyboard-interactive,hostbased
debug1: Offering RSA public key: /home/nce/.ssh/id_rsa
debug1: Server accepts key: pkalg ssh-rsa blen 277

Just to confirm your steps: You created a keypair via ssh-keygen Then you uploaded the key at .ssh/id_rsa.pub to the server(B) and appended it to the .ssh/authorized_keys for the user1.

On server(A) you connect via ssh user1@host? You might try ssh -o PreferredAuthentications=publickey user1@host

And you could provide a special/different identityfile by ssh -i ~/.ssh/serverB/id_rsa user1@host

Best Answer

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Linux – SSH doesn’t ask for password, gives “permission denied” immediately

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