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xendi
Asked: 2018-09-06 14:03:27 +0800 CST

SSH Permission denied (publickey,gssapi-keyex,gssapi-with-mic) | non-root user

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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.

linux

2 Answers

  1. Best Answer

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

    • 4

  2. The problem I had was that my key was of 4096 bits size and was not acceptable. I created a 2048 bits key and it worked! 

    ssh-keygen -t rsa -b 2048 -C "<email>"
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