Not able to ssh to gitlab

nofreewill42 · March 29, 2020, 9:19am

I follow the steps in https://docs.gitlab.com/ee/ssh/README.html#requirements, but I am stuck with:
nofreewill42@gitlab.com: Permission denied (publickey).

I even tried to connect with ssh -T git@nofreewill42(.com), as the tutorial suggests: “(replacing gitlab.com with your GitLab’s instance domain):”

I also tried with generating rsa keys w/ and w/o -o and deleting key in my gitlab settings SSH keys section and creating the newly generated one.
Tried creating keys w/&w/o the -C comment with my e-mail.

Nothing seems to work, I have no idea what is happening. I always get this permission denied message.

nofreewill42 · March 29, 2020, 9:25am

ssh -vvvT nofreewill42@gitlab. com
OpenSSH_7.6p1 Ubuntu-4ubuntu0.3, OpenSSL 1.0.2n 7 Dec 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: resolving “gitlab. com” port 22
debug2: ssh_connect_direct: needpriv 0
debug1: Connecting to gitlab. com [2606:4700:90:0:f22e:fbec:5bed:a9b9] port 22.
debug1: Connection established.
debug1: identity file /home/nofreewill/.ssh/id_rsa type 0
debug1: key_load_public: No such file or directory
debug1: identity file /home/nofreewill/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nofreewill/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nofreewill/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nofreewill/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nofreewill/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nofreewill/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/nofreewill/.ssh/id_ed25519-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_7.6p1 Ubuntu-4ubuntu0.3
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.2p2 Ubuntu-4ubuntu2.8
debug1: match: OpenSSH_7.2p2 Ubuntu-4ubuntu2.8 pat OpenSSH* compat 0x04000000
debug2: fd 3 setting O_NONBLOCK
debug1: Authenticating to gitlab. com:22 as ‘nofreewill42’
debug3: hostkeys_foreach: reading file “/home/nofreewill/.ssh/known_hosts”
debug3: send packet: type 20
debug1: SSH2_MSG_KEXINIT sent
debug3: receive packet: type 20
debug1: SSH2_MSG_KEXINIT received
debug2: local client KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh. org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c
debug2: host key algorithms: ecdsa-sha2-nistp256-cert-v01@openssh. com,ecdsa-sha2-nistp384-cert-v01@openssh. com,ecdsa-sha2-nistp521-cert-v01@openssh. com,ssh-ed25519-cert-v01@openssh. com,ssh-rsa-cert-v01@openssh. com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa
debug2: ciphers ctos: chacha20-poly1305@openssh. com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh. com,aes256-gcm@openssh. com
debug2: ciphers stoc: chacha20-poly1305@openssh. com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh. com,aes256-gcm@openssh. com
debug2: MACs ctos: umac-64-etm@openssh. com,umac-128-etm@openssh. com,hmac-sha2-256-etm@openssh. com,hmac-sha2-512-etm@openssh. com,hmac-sha1-etm@openssh. com,umac-64@openssh. com,umac-128@openssh. com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: umac-64-etm@openssh. com,umac-128-etm@openssh. com,hmac-sha2-256-etm@openssh. com,hmac-sha2-512-etm@openssh. com,hmac-sha1-etm@openssh. com,umac-64@openssh. com,umac-128@openssh. com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib@openssh. com,zlib
debug2: compression stoc: none,zlib@openssh. com,zlib
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug2: peer server KEXINIT proposal
debug2: KEX algorithms: curve25519-sha256@libssh. org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
debug2: host key algorithms: ssh-rsa,rsa-sha2-512,rsa-sha2-256,ecdsa-sha2-nistp256,ssh-ed25519
debug2: ciphers ctos: chacha20-poly1305@openssh. com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh. com,aes256-gcm@openssh. com
debug2: ciphers stoc: chacha20-poly1305@openssh. com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh. com,aes256-gcm@openssh. com
debug2: MACs ctos: umac-64-etm@openssh. com,umac-128-etm@openssh. com,hmac-sha2-256-etm@openssh. com,hmac-sha2-512-etm@openssh. com,hmac-sha1-etm@openssh. com,umac-64@openssh. com,umac-128@openssh. com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: MACs stoc: umac-64-etm@openssh. com,umac-128-etm@openssh. com,hmac-sha2-256-etm@openssh. com,hmac-sha2-512-etm@openssh. com,hmac-sha1-etm@openssh. com,umac-64@openssh. com,umac-128@openssh. com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
debug2: compression ctos: none,zlib@openssh. com
debug2: compression stoc: none,zlib@openssh. com
debug2: languages ctos:
debug2: languages stoc:
debug2: first_kex_follows 0
debug2: reserved 0
debug1: kex: algorithm: curve25519-sha256@libssh. org
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: chacha20-poly1305@openssh. com MAC: compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh. com MAC: compression: none
debug3: send packet: type 30
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug3: receive packet: type 31
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:HbW3g8zUjNSksFbqTiUWPWg2Bq1x8xdGUrliXFzSnUw
debug3: hostkeys_foreach: reading file “/home/nofreewill/.ssh/known_hosts”
debug3: hostkeys_foreach: reading file “/home/nofreewill/.ssh/known_hosts”
The authenticity of host ‘gitlab. com (2606:4700:90:0:f22e:fbec:5bed:a9b9)’ can’t be established.
ECDSA key fingerprint is SHA256:HbW3g8zUjNSksFbqTiUWPWg2Bq1x8xdGUrliXFzSnUw.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘gitlab. com,2606:4700:90:0:f22e:fbec:5bed:a9b9’ (ECDSA) to the list of known hosts.
debug3: send packet: type 21
debug2: set_newkeys: mode 1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug3: receive packet: type 21
debug1: SSH2_MSG_NEWKEYS received
debug2: set_newkeys: mode 0
debug1: rekey after 134217728 blocks
debug2: key: /home/nofreewill/.ssh/id_rsa (0x560c820aa1b0), agent
debug2: key: /home/nofreewill/.ssh/id_dsa ((nil))
debug2: key: /home/nofreewill/.ssh/id_ecdsa ((nil))
debug2: key: /home/nofreewill/.ssh/id_ed25519 ((nil))
debug3: send packet: type 5
debug3: receive packet: type 7
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<rsa-sha2-256,rsa-sha2-512>
debug3: receive packet: type 6
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug3: send packet: type 50
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey
debug3: start over, passed a different list publickey
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering public key: RSA SHA256:CNPBwfd2XKfKu48ILD386Ggw6ZKkj9yzsYM+WTNuDGM /home/nofreewill/.ssh/id_rsa
debug3: send_pubkey_test
debug3: send packet: type 50
debug2: we sent a publickey packet, wait for reply
debug3: receive packet: type 51
debug1: Authentications that can continue: publickey
debug1: Trying private key: /home/nofreewill/.ssh/id_dsa
debug3: no such identity: /home/nofreewill/.ssh/id_dsa: No such file or directory
debug1: Trying private key: /home/nofreewill/.ssh/id_ecdsa
debug3: no such identity: /home/nofreewill/.ssh/id_ecdsa: No such file or directory
debug1: Trying private key: /home/nofreewill/.ssh/id_ed25519
debug3: no such identity: /home/nofreewill/.ssh/id_ed25519: No such file or directory
debug2: we did not send a packet, disable method
debug1: No more authentication methods to try.
nofreewill42@gitlab. com: Permission denied (publickey).

shraddhaa_mohan · March 29, 2020, 9:49am

Can you try running ssh -T git@gitlab.com after adding your generated key to your gitlab account ? Steps are here

nofreewill42 · March 29, 2020, 10:01am

git@gitlab.com: Permission denied (publickey).

With rsa and also with ed25519 keys.

nofreewill42 · March 31, 2020, 4:14pm

I haven’t changed anything.
I just created an ed25519 key again according to the page: https://docs.gitlab.com/ee/ssh/README.html#generating-a-new-ssh-key-pair

I then have gone to gitlab.com, logged in with my github account, added the key and now I have:

Anyways, your comment on logging with git@gitlab. com helped. Thanks for that.
I don’t understand why the docs says in paranthesis that:
(replacing gitlab. com with your GitLab’s instance domain):

shivam · March 31, 2020, 6:41pm

Hi @nofreewill42,

For making submissions for the challenge you need to use gitlab.aicrowd.com and not gitlab.com. I guess there has been confusion regarding the same above.

The steps will be as follows:

Add your SSH key in your account https://gitlab.aicrowd.com/profile/keys
Login and start using git repository via gitlab.aicrowd.com domain.

nofreewill42 · March 31, 2020, 6:46pm

Indeed, gitlab.com says that the key was created 2 hours ago.
And gitlab.aicrowd.com says that the key was used 2 hours ago, although I didn’t touch it since I gave up two days ago.
I don’t know what happened since, but it works now.

shivam · March 31, 2020, 6:48pm

Great, I believe you would have followed steps in starter kit or baseline which make you push codebase to gitlab.aicrowd.com (by changing remote), and you ended up correctly on gitlab.aicrowd.com.

Happy that things are working on your end now, excited to see yours submissions into the challenge and leaderboard!