无法通过 ssh 连接到 GitLab

Question

Firstly, i created the ssh key pair with the command:

ssh-keygen -o -t rsa -b 4096 -C "email@example.com"

Then, i added content of the id_rsa.pub file to my GitLab profile. But when i tried to test whether my SSH key was added correctly:

ssh -vvvT user@some.gitlab.com

i've got the following log after correct password was typed:

debug3: send packet: type 61
debug3: receive packet: type 60
debug2: input_userauth_info_req
debug2: input_userauth_info_req: num_prompts 0
debug3: send packet: type 61
debug3: receive packet: type 52
debug1: Authentication succeeded (keyboard-interactive).
Authenticated to some.gitlab.com ([xxx.xxx.xxx.xxx]:xx).
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug3: send packet: type 90
debug1: Requesting no-more-sessions@openssh.com
debug3: send packet: type 80
debug1: Entering interactive session.
debug1: pledge: network
debug3: receive packet: type 80
debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
debug3: receive packet: type 91
debug2: channel_input_open_confirmation: channel 0: callback start
debug2: fd 3 setting TCP_NODELAY
debug2: client_session2_setup: id 0
debug2: channel 0: request shell confirm 1
debug3: send packet: type 98
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
debug2: channel 0: rcvd adjust 2097152
debug3: receive packet: type 99
debug2: channel_input_status_confirm: type 99 id 0
debug2: shell request accepted on channel 0
Last failed login: Sun Jan 26 21:33:13 UTC 2020 from some-freeipa.com on ssh:notty

And nothing else. Printing of log has stopped, and console is frozen now. Also i've tried to clone some projects from my GitLab with command:

git clone ssh://user@some-gitlab-url/some-project.git

But i've got the error:

Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

Could anyone, please, help me with the issue?

Answer 1

shell request accepted on channel 0

That means possibly the ssh part is working.

What would not be working would be the URL used to cloned the repo:

• the users needs to be git (always in a typical GitLab installation)
• the URL needs to include the user/group and the repo

So not ssh://user@some-gitlab-url/some-project.git but

ssh://git@some-gitlab-url/some-group/some-project.git

As found by the OP in the chat , the issue was the SSH library used .

The problem was with OpenSSH client.
During the discussion I was using OpenSSH client for Windows.
After it was changed to Git Bash it has started to work!

I mentioned here that Windows 10 (1809+) adds an OpenSSH Client (and server).
But Git for Windows comes with OpenSSH 8.1 .

Since The Windows SSH is a fork ( PowerShell/openssh-portable ) of the openSSH one, using the one from Git is safer.

More generally, using Git with a path starting with:

set GH=C:\path\to\git
set PATH=%GH%\bin;%GH%\usr\bin;%GH%\cmd;%GH%\mingw64\bin;%PATH%

That will ensure you are using Git with its runtime dependencies first (and then Windows).