SSH on Gitlab

Thu Jun 22 10:38:03 UTC 2023

FWIW if I try the same command I get all the way through to a normal
exit (which I guess is expected since you're not supposed to be able
to actually obtain a shell via ssh!) so I guess the problem is
specific to you, Simon.

Tom

OpenSSH_8.4p1 Debian-5+deb11u1, OpenSSL 1.1.1n  15 Mar 2022
debug1: Reading configuration data /home/tom/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: include /etc/ssh/ssh_config.d/*.conf matched no files
debug1: /etc/ssh/ssh_config line 21: Applying options for *
debug1: Connecting to gitlab.haskell.org [2604:1380:61:2300::1] port 22.
debug1: Connection established.
debug1: identity file <redacted>
debug1: Local version string SSH-2.0-OpenSSH_8.4p1 Debian-5+deb11u1
debug1: Remote protocol version 2.0, remote software version OpenSSH_9.1
debug1: match: OpenSSH_9.1 pat OpenSSH* compat 0x04000000
debug1: Authenticating to gitlab.haskell.org:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ssh-ed25519
debug1: kex: server->client cipher: chacha20-poly1305 at openssh.com MAC: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305 at openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ssh-ed25519 SHA256:/dI7zsBRZNPB+0TqskF7rSaZ/LhQw0cF4c5W+4uMlRo
debug1: Host 'gitlab.haskell.org' is known and matches the ED25519 host key.
debug1: Found key in <redacted>
debug1: rekey out after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey in after 134217728 blocks
debug1: Will attempt key: <redacted>
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,sk-ssh-ed25519 at openssh.com,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256 at openssh.com,webauthn-sk-ecdsa-sha2-nistp256 at openssh.com>
debug1: kex_input_ext_info: publickey-hostbound at openssh.com (unrecognised)
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Offering public key: <redacted>
debug1: Authentications that can continue: publickey,password,keyboard-interactive
debug1: Offering public key: <redacted>
debug1: Server accepts key: <redacted>
debug1: Authentication succeeded (publickey).
Authenticated to gitlab.haskell.org ([2604:1380:61:2300::1]:22).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions at openssh.com
debug1: Entering interactive session.
debug1: pledge: network
debug1: client_input_global_request: rtype hostkeys-00 at openssh.com want_reply 0
debug1: Remote: /var/gitlab/state/home/.ssh/authorized_keys:857: key options: command user-rc
debug1: Remote: /var/gitlab/state/home/.ssh/authorized_keys:857: key options: command user-rc
debug1: Sending environment.
debug1: Sending env LANG = en_GB.UTF-8
PTY allocation request failed on channel 0
Welcome to GitLab, @tomjaguarpaw1!
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: client_input_channel_req: channel 0 rtype eow at openssh.com reply 0
debug1: channel 0: free: client-session, nchannels 1
Connection to gitlab.haskell.org closed.
Transferred: sent 3296, received 2832 bytes, in 0.4 seconds
Bytes per second: sent 9134.7, received 7848.7
debug1: Exit status 0

On Thu, Jun 22, 2023 at 11:15:28AM +0100, Simon Peyton Jones wrote:
> Is SSH working on gitlab.haskell.org?  I'm getting this
> 
> simonpj at CDW-8FABODHF0V5:~$ ssh -v git at gitlab.haskell.org
> OpenSSH_8.2p1 Ubuntu-4, OpenSSL 1.1.1f  31 Mar 2020
> debug1: Reading configuration data /home/simonpj/.ssh/config
> debug1: Reading configuration data /etc/ssh/ssh_config
> debug1: /etc/ssh/ssh_config line 19: include /etc/ssh/ssh_config.d/*.conf
> matched no files
> debug1: /etc/ssh/ssh_config line 21: Applying options for *
> debug1: Connecting to gitlab.haskell.org [145.40.64.137] port 22.
> debug1: Connection established.
> debug1: identity file /home/simonpj/.ssh/id_rsa type 0
> debug1: identity file /home/simonpj/.ssh/id_rsa-cert type -1
> debug1: identity file /home/simonpj/.ssh/id_dsa type 1
> debug1: identity file /home/simonpj/.ssh/id_dsa-cert type -1
> debug1: identity file /home/simonpj/.ssh/id_ecdsa type -1
> debug1: identity file /home/simonpj/.ssh/id_ecdsa-cert type -1
> debug1: identity file /home/simonpj/.ssh/id_ecdsa_sk type -1
> debug1: identity file /home/simonpj/.ssh/id_ecdsa_sk-cert type -1
> debug1: identity file /home/simonpj/.ssh/id_ed25519 type 3
> debug1: identity file /home/simonpj/.ssh/id_ed25519-cert type -1
> debug1: identity file /home/simonpj/.ssh/id_ed25519_sk type -1
> debug1: identity file /home/simonpj/.ssh/id_ed25519_sk-cert type -1
> debug1: identity file /home/simonpj/.ssh/id_xmss type -1
> debug1: identity file /home/simonpj/.ssh/id_xmss-cert type -1
> debug1: Local version string SSH-2.0-OpenSSH_8.2p1 Ubuntu-4
> 
> At this point it hangs.  Stackoverflow suggests
> <https://superuser.com/questions/1374076/what-does-it-mean-if-ssh-hangs-after-connection-established>a
> server fault.  But I'm on a new WLAN so I suppose there could be some
> bizarre filtering?