ssh - 如何防止与dataproc上的SOCKS的“连接被拒绝”？

Question

我正在尝试在the Google Jupyter guide之后建立到我的dataproc spark集群的SOCKS连接，但是在启动浏览器Chrome之后，我一直收到“连接被拒绝”错误：

channel 4: open failed: connect failed: Connection refused
channel 5: open failed: connect failed: Connection refused
channel 6: open failed: connect failed: Connection refused
channel 7: open failed: connect failed: Connection refused
channel 8: open failed: connect failed: Connection refused
channel 5: open failed: connect failed: Connection refused
channel 5: open failed: connect failed: Connection refused
channel 5: open failed: connect failed: Connection refused
channel 16: open failed: connect failed: Connection refused
channel 16: open failed: administratively prohibited: open failed
channel 17: open failed: administratively prohibited: open failed
channel 18: open failed: administratively prohibited: open failed
channel 16: open failed: connect failed: Connection refused
channel 18: open failed: connect failed: Connection refused
channel 18: open failed: connect failed: Connection refused
channel 18: open failed: connect failed: Connection refused

--proxy-server="socks5://localhost:1080"和 --proxy-server="socks5://127.0.0.1:1080"都会发生这种情况

Answer 1

因此，我不确定100％是“管理上禁止”消息的来源，但是根据我的经验，这些消息始终是虚假警报，即使我的袜子代理正常运行，我仍然看到这些open failed: administratively prohibited: open failed消息。

至于实际问题，由于YARN之类的东西绑定其Web服务的方式，如果尝试使用Connection refused而不是http://localhost:8088访问YARN UI，则已经得到http://<master-hostname>:8088了。这与在群集中运行get的行为相匹配：

dhuo@dhuo-jupyter-m:~$ wget http://localhost:8124
...
Saving to: ‘index.html.13’

index.html.13                                                          100%[=============================================================================================================================================================================>]  11.41K  --.-KB/s   in 0s     

2016-07-15 23:26:25 (222 MB/s) - ‘index.html.13’ saved [11686/11686]

dhuo@dhuo-jupyter-m:~$ wget http://localhost:8088
--2016-07-15 23:26:28--  http://localhost:8088/
Resolving localhost (localhost)... ::1, 127.0.0.1
Connecting to localhost (localhost)|::1|:8088... failed: Connection refused.
Connecting to localhost (localhost)|127.0.0.1|:8088... failed: Connection refused.
dhuo@dhuo-jupyter-m:~$ wget http://`hostname`:8124
...
Saving to: ‘index.html.14’

index.html.14                                                          100%[=============================================================================================================================================================================>]  11.41K  --.-KB/s   in 0s     

2016-07-15 23:26:34 (260 MB/s) - ‘index.html.14’ saved [11686/11686]

dhuo@dhuo-jupyter-m:~$ wget http://`hostname`:8088
...
Saving to: ‘index.html.15’

index.html.15                                                          100%[=============================================================================================================================================================================>]  10.81K  --.-KB/s   in 0s     

2016-07-15 23:26:37 (248 MB/s) - ‘index.html.15’ saved [11067/11067]

如您所见，这与Jupyter的行为（我在端口 8124上运行）不同，在Jupyter的webapp上，它可以正确解析主服务器上的 localhost:8124。由于带有这些链接说明的名称解析应在主服务器上进行，因此浏览器的行为解析主机将与在隧道中进入的节点中运行 wget相同。

因此，如果您仅使用主机的主机名而不是localhost，则它应该可以工作。