SSH configuration broken on my system?

[jackharro]

G'day,

I'm trying to use ssh to push on Linux. It works on MacOS. I have a public and private key called ~/.ssh/github{.pub,}. I copy and paste the contents of ~/.ssh/github.pub to GitHub:

cat ~/.ssh/github.pub | clipman store

And I save the config. Then, I compare the sha256 checksums:

sha256sum ~/.ssh/github.pub
79c994cc69caa98c72bf71fda5563900c350bd1237e839dc80e4f44e22b20f61

On GitHub: abPMiMLinGDZ+GSibXqVA9Ouho9c9JnN6+pBqu/L3dM

ssh -T git@github.com returns git@github.com: Permission denied (publickey). So does git fetch.

One thing I can think is that ssh-agent isn't running because of my system configuration (it is a broken gnome-shell that is run without gnome-session from the Linux Console because GDM keeps breaking on my PC and gnome-session exits with no debug info. There are other daemons that don't work e.g. GNOME Settings and the logout command).

Mention: New to GitHub #34904

This is a similar issue, but OP was comparing the public key and the private key. I have confirmed that I am only working with the public key.

Any ideas?

Cheers

[fruetalo182]

Hi @jackharro! You can do a couple thing,

First, ensure your SSH-Agent is running:

eval "$(ssh-agent -s)"
ssh-add ~/.ssh/github

Make sure you have a proper SSH configuration for GitHub. Add the following to ~/.ssh/config if not present:

Host github.com
  IdentityFile ~/.ssh/github
  AddKeysToAgent yes
  UseKeychain yes
  IdentitiesOnly yes

Check and set the permissions on your private key to make sure they are restricted:

chmod 600 ~/.ssh/github

Use the verbose flag to see detailed error messages:

ssh -vvvT git@github.com