无法在Windows上克隆，但可以从Gitlab服务器在Linux上克隆

Question

我正在尝试通过SSH从远程Gitlab服务器克隆存储库。 我正在使用Gitlab CE version 9.3.9 755bb71和TortoiseGIT version 2.5.0和git (for windows) version 2.14.0

SSH密钥已正确安装，因为我已经使用

ssh -vT git@192.168.100.100 -i /path/to/.ssh/key

使用以上密钥，我收到以下消息，表示身份验证成功

OpenSSH_7.5p1, OpenSSL 1.0.2k  26 Jan 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Connecting to 192.168.100.100 [192.168.100.100] port 22.
debug1: Connection established.
debug1: identity file /path/to/.ssh/key type 1
debug1: key_load_public: No such file or directory
debug1: identity file /path/to/.ssh/key-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.5
debug1: Remote protocol version 2.0, remote software version OpenSSH_6.6.1
debug1: match: OpenSSH_6.6.1 pat OpenSSH_6.6.1* compat 0x04000000
debug1: Authenticating to 192.168.100.100:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
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: <implicit> compression: none
debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:fEztD+bNxKRs24poXJMlP0GBAP6Q1dZT80OhQAtDQJE
debug1: Host '192.168.100.100' is known and matches the ECDSA host key.
debug1: Found key in /path/to/.ssh/known_hosts:1
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: rekey after 134217728 blocks
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,gssapi-keyex,gssapi-with-mic,password
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /path/to/.ssh/key
debug1: Server accepts key: pkalg ssh-rsa blen 535
Enter passphrase for key '/path/to/.ssh/key':
debug1: Authentication succeeded (publickey).
Authenticated to 192.168.100.100 ([192.168.100.100]:22).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: pledge: network
debug1: Remote: Forced command.
debug1: Remote: Port forwarding disabled.
debug1: Remote: X11 forwarding disabled.
debug1: Remote: Agent forwarding disabled.
debug1: Remote: Pty allocation disabled.
debug1: Remote: Forced command.
debug1: Remote: Port forwarding disabled.
debug1: Remote: X11 forwarding disabled.
debug1: Remote: Agent forwarding disabled.
debug1: Remote: Pty allocation disabled.
Welcome to GitLab, John Doe!
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0
debug1: channel 0: free: client-session, nchannels 1
Transferred: sent 3476, received 3264 bytes, in 2.2 seconds
Bytes per second: sent 1574.0, received 1478.0
debug1: Exit status 0

当我在Windows上使用TortoiseGit克隆存储库时，在客户端上出现以下错误

Cloning into 'C:\path\folder'...
GitLab: Disallowed command
fatal: Could not read from remote repository.

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

在gitlab服务器上，在gitlab-shell.log我收到以下警告消息

WARN -- : gitlab-shell: Attempt to execute disallowed command <git upload-pack '/path/to/repo.git'> by user with key key-1.

但是，当我尝试使用另一台SSH密钥从另一台Linux机器上进行git clone成功时，我在gitlab服务器上的gitlab gitlab-shell.log收到以下信息消息

INFO -- : gitlab-shell: executing git command <gitaly-upload-pack  {"repository":{"path":"/very/long/path/to/repo.git"},"gl_id":"key-2"}> for user with key key-2.

我花了十多个小时来尝试调试所有内容，但我不确定有什么区别或问题到底出在哪里。 我也尝试将以下内容添加到TortoiseGit的本地.gitconfig文件中，但这没有任何改变。

[remote "origin"]
  uploadpack = git-upload-pack

最后，通过HTTPS克隆相同的存储库工作正常，而使用用户名/密码则没有任何问题。

Answer 1

注意：我只是升级到Windows的Git 2.14.0 ...而ssh网址都无法正常工作：

> git ls-remote
GitLab: Disallowed command
fatal: Could not read from remote repository.

（ origin是ssh网址）

另一个副作用： git-for-windows / git问题1258

fatal: protocol error: bad line length character: Not

好像BitBucket看着argv[0] （通常是git-upload-pack ，带有回归git）来确定它是否是允许的命令。

因此，我认为这是设计使git被拒绝而git-upload-pack不被拒绝的原因。

关于GitLab的错误的同类： gitlab-ce问题36028 。
待处理的合并请求 在检测到git xxx命令时显式恢复git-xxx 。

参见gitlab_shell.rb#parse_cmd(args)

  def parse_cmd(args)
    # Handle Git for Windows 2.14 using "git upload-pack" instead of git-upload-pack
    if args.length == 3 && args.first == 'git'
      @command = "git-#{args[1]}"
      args = [@command, args.last]
    else
      @command = args.first
    end

在Windows的Git端，一个修复程序正在进行中： 参见commit 0f33428

还原“ git_connect：首选Git的内建函数而不是虚线形式”

似乎此更改（旨在修复当git-upload-pack不在PATH时与本地存储库交互的测试）在SSH访问中逐渐消失。

用于Windows 2.14.0（2）的Git正在开发中，并且在此编辑时的30分钟前刚刚发布（2017-08-07T11：05：34Z UTC）。

---

原始答案

如果key1与您的/path/to/.ssh/key相同，并且确实标识了John Doe，则这意味着John Doe无权访问该存储库（ 如此处所示 ）。
检查key2是否与其他用户关联。

如果两个键都引用相同的用户，那么这将是一个本地配置问题（如本答案所示 ）。 还要检查您的TortoiseGit是否使用与测试中相同的密钥：

set "GIT_COMMAND_SSH=ssh -v"
# launch TortoiseGit from that CMD session

然后，您将看到使用ssh url克隆存储库时正在使用的TortoiseGit。 您可能需要定义一个.ssh/config文件 。

Answer 2

Bitbucket Server和Gogs都遇到类似的问题。

似乎在git 2.14.0中（可能仅在Windows上）发生了更改，需要对产品进行更新或对git进行修复。