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SSH Key Strangeness (lemmygrad.ml)

submitted 1 year ago* (last edited 1 year ago) by BRINGit34@lemmygrad.ml to c/selfhosted@lemmy.world

8 comments fedilink hide all child comments

Are there any reasons to get a pubkey denied after you run ssh-copy-id onto your server? I've already restarted the sshd service but I still get pubkey denied after I copied my ssh I.D. to my server. I am thinking about just removing all the keys I have on the server and re-adding them but I was hoping someone else may have an idea before I do that. Thanks!

EDIT: OKAY. I fixed it. I appreciate all the help I received. I still really could not figure out what the actual issue is. But I did have some extra ssh keys that I wasn't using from old machines and after I deleted those and readded my key everything seems to work

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[–] brain_in_a_jar@lemmy.world 7 points 1 year ago

Check perms on the ~/.ssh/authorized_keys file on the server side (should be 0600) and the ~/.ssh dir itself?

[–] leopardboy@netmonkey.tech 5 points 1 year ago (1 children)

Have you confirmed that the public keys exist on the remote server in your .ssh directory? Are the permissions correct?

[–] BRINGit34@lemmygrad.ml 1 points 1 year ago (1 children)

I'll have to check when I get off work. I never have any errors when copying my id so I am not sure why they wouldn't be there but I will check

[–] leopardboy@netmonkey.tech 2 points 1 year ago

Same. I've never had it screw up before, but the only thing I can imagine is that something's not right with the keys.

As an aside, I did recently create a new server, and somehow managed to completely ignore the errors in ssh-copy-id. Turns out I forgot to use -m (to create my home directory) in useradd when I went to create my personal account. Oops!

[–] uin@lemmy.world 4 points 1 year ago

Also: Make sure that the user you ran “ssh-copy-id” against on the remote machine is also the user you’re trying to log in with.

[–] r0ckr@lemmy.world 2 points 1 year ago

Try running this command on your target system:

cat $HOME/.ssh/authorized_keys

Does the private key part of your key pair show up in the list?

[–] TCB13@lemmy.world 1 points 1 year ago

How many private keys do you have in your client machine? Sometimes people generate a new key par but there's a previous one on the system that gets served before the right one. Go into your .ssh directory in the client and check if there's anything else there.

[–] mirisbowring@lemmy.primboard.de 1 points 1 year ago

did you verify to use the correct corresponding private key?

You can specify the keyfile with the -i option if i remember correctly