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Adaddinsane
Asked: 2022-12-11 07:25:37 +0800 CST

SSH 代理转发失败

  • 772

我有一个 DigitalOcean 液滴，我试图从 Github 克隆一个回购协议。

这在我的本地机器上运行良好，我一直在关注 Github 上的指南：

https://docs.github.com/en/developers/overview/using-ssh-agent-forwarding

我不得不eval $(ssh-agent -s)在服务器上手动启用 SSH 代理，但据我所知代理转发没有发生，因为我无法ssh -T [email protected]从服务器使用，调试输出ssh -v [email protected]是：

OpenSSH_8.2p1 Ubuntu-4ubuntu0.5, OpenSSL 1.1.1f  31 Mar 2020
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 github.com [140.82.121.3] port 22.
debug1: Connection established.
debug1: identity file /root/.ssh/id_rsa type -1
debug1: identity file /root/.ssh/id_rsa-cert type -1
debug1: identity file /root/.ssh/id_dsa type -1
debug1: identity file /root/.ssh/id_dsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa type -1
debug1: identity file /root/.ssh/id_ecdsa-cert type -1
debug1: identity file /root/.ssh/id_ecdsa_sk type -1
debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1
debug1: identity file /root/.ssh/id_ed25519 type -1
debug1: identity file /root/.ssh/id_ed25519-cert type -1
debug1: identity file /root/.ssh/id_ed25519_sk type -1
debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1
debug1: identity file /root/.ssh/id_xmss type -1
debug1: identity file /root/.ssh/id_xmss-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.2p1 Ubuntu-4ubuntu0.5
debug1: Remote protocol version 2.0, remote software version babeld-181fb29f
debug1: no match: babeld-181fb29f
debug1: Authenticating to github.com:22 as 'git'
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: algorithm: curve25519-sha256
debug1: kex: host key algorithm: ecdsa-sha2-nistp256
debug1: kex: server->client cipher: [email protected] MAC: <implicit> compression: none
debug1: kex: client->server cipher: [email protected] MAC: <implicit> compression: none
debug1: expecting SSH2_MSG_KEX_ECDH_REPLY
debug1: Server host key: ecdsa-sha2-nistp256 SHA256:p2QAMXNIC1TJYWeIOttrVc98/R1BUFWu3/LiyKgUfQM
The authenticity of host 'github.com (140.82.121.3)' can't be established.
ECDSA key fingerprint is SHA256:p2QAMXNIC1TJYWeIOttrVc98/R1BUFWu3/LiyKgUfQM.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'github.com,140.82.121.3' (ECDSA) to the list of known hosts.
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: /root/.ssh/id_rsa 
debug1: Will attempt key: /root/.ssh/id_dsa 
debug1: Will attempt key: /root/.ssh/id_ecdsa 
debug1: Will attempt key: /root/.ssh/id_ecdsa_sk 
debug1: Will attempt key: /root/.ssh/id_ed25519 
debug1: Will attempt key: /root/.ssh/id_ed25519_sk 
debug1: Will attempt key: /root/.ssh/id_xmss 
debug1: SSH2_MSG_EXT_INFO received
debug1: kex_input_ext_info: server-sig-algs=<[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],ssh-ed25519,ecdsa-sha2-nistp521,ecdsa-sha2-nistp384,ecdsa-sha2-nistp256,rsa-sha2-512,rsa-sha2-256,ssh-rsa>
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: publickey
debug1: Next authentication method: publickey
debug1: Trying private key: /root/.ssh/id_rsa
debug1: Trying private key: /root/.ssh/id_dsa
debug1: Trying private key: /root/.ssh/id_ecdsa
debug1: Trying private key: /root/.ssh/id_ecdsa_sk
debug1: Trying private key: /root/.ssh/id_ed25519
debug1: Trying private key: /root/.ssh/id_ed25519_sk
debug1: Trying private key: /root/.ssh/id_xmss
debug1: No more authentication methods to try.
[email protected]: Permission denied (publickey).

在本地机器上，我为服务器 IP 创建了一个配置条目：

Host x.x.x.x
    ForwardAgent yes

我还将服务器上的 sshd_config 文件编辑为：

AllowAgentForwarding yes

我使用以下方法在本地机器上添加了本地密钥：ssh-add ~/.ssh/id_rsa

我不知道还能做什么，几个小时以来我一直在为此苦苦思索。（我已经阅读了我能找到的所有内容，但没有任何帮助。）

ssh

2 个回答

  1. Best Answer

    我的错误是试图使用提供的 DigitalOcean 控制台窗口调试问题——我慢慢意识到，也许它没有必要的访问权限来执行转发。当然不是，因为它位于浏览器窗口中。

    所以我放弃了一切回到基础并使用终端进行 SSH 访问，突然间我收到了有用的错误消息。

    最后，我将本地机器上的配置条目扩展为：

    Host digitalocean    
    User root
    ForwardAgent yes
    Hostname x.x.x.x
    IdentityFile ~/.ssh/digitalocean

    然后我就可以访问服务器上的 githubssh -T [email protected]

    解决了。

    • 1

  2. 您必须在本地计算机（而不是服务器）中启用 ssh-agent 并将您的密钥添加到其中。

    • 0

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