Phing SSH 代理转发 [英] Phing SSH Agent forwarding

问题描述

Phing 在服务器 A 上运行，使用此 SSH 任务连接到服务器 B:

它连接到服务器 B ok，但是尝试连接到服务器 C 的 hg pull 吐回 remote: Permission denied (public key).

但是，从 A 手动 SSH 连接到服务器 B 并执行 hg pull 工作正常，这表明代理转发正在工作，因为我没有在 B 上运行任何代理，仅在 A 上运行.

有什么方法可以让我看到 B 确实在使用哪个公钥来尝试调试它?

解决方案

Phing 的任务使用的 PHP SSH2 似乎不支持代理转发.

用一个简单的 exec 任务替换 任务，即，

<exec command="ssh xxxxxx@B 'cd ./public_html/staging; hg pull'"/>

成功了.

Phing running on Server A, with this SSH task to connect to server B:

<ssh username="xxxxxx"
host="B"
pubkeyfile="/home/xxxx/.ssh/id_rsa.pub"
privkeyfile="/home/xxxx/.ssh/id_rsa.pem"
command="cd ./public_html/staging; hg pull />

It connects to server B ok, but the hg pull which tries to connect to server C spits back remote: Permission denied (public key).

However manually SSH'ing into server B from A and doing an hg pull works fine, suggesting Agent Forwarding is working as I'm not running any agent on B, only on A.

Is there a way I can see which public key is indeed being used by B to try to debug this?

解决方案

It seems like agent forwarding is not supported by PHP's SSH2 which Phing's task uses.

Replacing the <ssh> task with a simple exec task, i.e.,

<exec command="ssh xxxxxx@B 'cd ./public_html/staging; hg pull'"/>

did the trick.

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