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我刚刚使用官方 gogs/gogs-rpi docker 映像在 Raspberry Pi3 上安装了Gogs（Go Git 服务器） ，我按照建议运行：

docker run --name=gogs -p 10022:22 -p 10080:3000 -v /var/gogs:/data gogs/gogs-rpi

我使用我的笔记本电脑通过 gogs 网络界面注册了一个管理员用户，并为该帐户添加了一个公钥。我现在可以使用以下命令将 git 存储库从 pi 克隆到我的笔记本电脑：

git clone ssh://git@192.168.178.50:10022/peter/my_repo.git

我输入了关键短语，它工作得很好。

现在奇怪的部分......当我从笔记本电脑中删除公钥文件（id_rsa_gogs.pub）并再次运行上述命令时，我将收到“拒绝访问”错误。

有谁知道那可能是什么？我已经在 Gogs 中注册了公钥。为什么我需要在客户端机器上有一个版本的公钥？我从未听说过公钥需要留在客户端的情况。

乌达普特

如果我 rm .pub 密钥文件并运行，ssh -Tv git@192.168.178.50 -p 10022 -i /home/peter/.ssh/id_rsa_gogs我会得到：

OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, OpenSSL 1.0.2g  1 Mar 2016
debug1: Reading configuration data /home/peter/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 192.168.178.50 [192.168.178.50] port 10022.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_rsa_gogs type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_rsa_gogs-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4
debug1: match: OpenSSH_7.4 pat OpenSSH* compat 0x04000000
debug1: Authenticating to 192.168.178.50:10022 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:[REMOVED]
debug1: Host '[192.168.178.50]:10022' is known and matches the ECDSA host key.
debug1: Found key in /home/peter/.ssh/known_hosts:18
debug1: rekey after [REMOVED] blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after [REMOVED] blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /home/peter/.ssh/id_rsa_gogs
Enter passphrase for key '/home/peter/.ssh/id_rsa_gogs': 
debug1: Authentication succeeded (publickey).
Authenticated to 192.168.178.50 ([192.168.178.50]:10022).
debug1: channel 0: new [client-session]
debug1: Requesting no-more-sessions@openssh.com
debug1: Entering interactive session.
debug1: pledge: network
debug1: client_input_global_request: rtype hostkeys-00@openssh.com want_reply 0
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: Sending environment.
debug1: Sending env LC_TELEPHONE = de_DE.UTF-8
debug1: Sending env LANG = en_US.UTF-8
debug1: Sending env LC_NAME = de_DE.UTF-8
debug1: Sending env LC_MEASUREMENT = de_DE.UTF-8
debug1: Sending env LC_IDENTIFICATION = de_DE.UTF-8
debug1: Sending env LC_MONETARY = de_DE.UTF-8
debug1: Sending env LC_PAPER = de_DE.UTF-8
debug1: Sending env LC_ADDRESS = de_DE.UTF-8
debug1: Sending env LC_NUMERIC = de_DE.UTF-8
Hi there, You've successfully authenticated, but Gogs does not provide shell access.
If this is unexpected, please log in with password and setup Gogs under another user.
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 3268, received 3096 bytes, in 0.2 seconds
Bytes per second: sent 15416.0, received 14604.6
debug1: Exit status 0

如果我运行它似乎会失败ssh -Tv git@192.168.178.10 -p 10022（不直接指定密钥文件）：

OpenSSH_7.2p2 Ubuntu-4ubuntu2.2, OpenSSL 1.0.2g  1 Mar 2016
debug1: Reading configuration data /home/peter/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to 192.168.178.50 [192.168.178.50] port 10022.
debug1: Connection established.
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_rsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /home/peter/.ssh/id_ed25519-cert type -1
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_7.2p2 Ubuntu-4ubuntu2.2
debug1: Remote protocol version 2.0, remote software version OpenSSH_7.4
debug1: match: OpenSSH_7.4 pat OpenSSH* compat [REMOVED]
debug1: Authenticating to 192.168.178.50:10022 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:[REMOVED]
debug1: Host '[192.168.178.50]:10022' is known and matches the ECDSA host key.
debug1: Found key in /home/peter/.ssh/known_hosts:[REMOVED]
debug1: rekey after [REMOVED] blocks
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: rekey after [REMOVED] blocks
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<ssh-ed25519,ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: Next authentication method: publickey
debug1: Trying private key: /home/peter/.ssh/id_rsa
debug1: Trying private key: /home/peter/.ssh/id_dsa
debug1: Trying private key: /home/peter/.ssh/id_ecdsa
debug1: Trying private key: /home/peter/.ssh/id_ed25519
debug1: Next authentication method: keyboard-interactive
debug1: Authentications that can continue: publickey,keyboard-interactive
debug1: No more authentication methods to try.
Permission denied (publickey,keyboard-interactive).

还要检查在注册和使用没有任何密码的 ssh 密钥时是否出现相同的问题。

没有密码，结果是一样的。

我不知道这是否重要，但我~/.ssh/config为Gogs 准备了这个

Host 192.168.178.50:10022
    HostName 192.168.178.50:10022
    IdentityFile ~/.ssh/id_rsa_gogs
    User Peter
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2 回答 2

2 
Host 192.168.178.50:10022
    HostName 192.168.178.50:10022
    IdentityFile ~/.ssh/id_rsa_gogs
    User Peter

ssh不接受端口号作为此处的HostorHostname选项的一部分。因此，它无法识别此条目应该应用于您的连接尝试，并且它没有应用身份文件或用户。

如果您只需要匹配 IP 地址，这应该可以工作：

Host 192.168.178.50
    Port 10022
    IdentityFile ~/.ssh/id_rsa_gogs
    User Peter

如果您确实需要在端口上匹配，这应该可以：

Match host 192.168.178.50 exec "test %p = 10022"
    IdentityFile ~/.ssh/id_rsa_gogs
    User Peter

这将运行test命令以测试端口值。"%p" 将被 ssh 使用的端口值替换（默认值 22 或命令行中的值）。测试也称为 [; 它是一个命令行实用程序，主要用于 shell 脚本，作为 if 语句的一部分。

于 2017-09-14T17:05:15.367 回答
1

尝试ssh -Tv git@192.168.178.50 -p 10022 -i /home/peter/.ssh/id_rsa_gogs以了解实际导致错误的原因。

还要检查在注册和使用没有任何密码的 ssh 密钥时是否出现相同的问题。（即使公钥没有密码）

于 2017-09-14T04:49:20.417 回答