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<p class="MsoNormal"><span style="color:#1F497D">Bart, Mingyuan,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">We got derailed a bit but gained more knowledge in the process. I have reverted back to my original one line fix. With this change, the NO_PROXY IPs are automatically derived from the provided subnets. The user
can also extend the default list by adding <b>docker_no_proxy</b> with additional IPs to the host override file.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Tee<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Wensley, Barton
<br>
<b>Sent:</b> May-30-19 11:12 AM<br>
<b>To:</b> Qi, Mingyuan; starlingx-discuss@lists.starlingx.io; Ngo, Tee<br>
<b>Cc:</b> Miller, Frank<br>
<b>Subject:</b> RE: [Container] docker daemon proxy issue clarification<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks Mingyuan for looking into this.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I have done my own testing and can confirm your findings:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol;color:#1F497D"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">Configuring an http and https proxy at the same time is supported.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="font-family:Symbol;color:#1F497D"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">Configuring both proxies in the same config file is also OK.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Based on that, the only fix required in [0] is to configure the default NO_PROXY settings when they are not specified.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">We are testing with Tinyproxy (<a href="https://tinyproxy.github.io">https://tinyproxy.github.io</a>) here in Ottawa, which acts as both an http and https proxy. Our config is different than what you specified
below.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">For http proxy only:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">docker_http_proxy: http://<proxy IP>:<proxy port><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">For https proxy only:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">docker_https_proxy: http://<proxy IP>:<proxy port><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">For http and https proxy:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">docker_http_proxy: http://<proxy IP>:<proxy port><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">docker_https_proxy: http://<proxy IP>:<proxy port><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The difference from your email below is that we never specify https to access our proxy - doing that causes TLS handshake timeouts. I suspect that is just a difference in the proxies we are using? In any case,
I see that in many of the on-line articles (e.g. [3]), http is always used to access the proxy itself.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Bart<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Qi, Mingyuan [mailto:mingyuan.qi@intel.com]
<br>
<b>Sent:</b> May 30, 2019 12:59 AM<br>
<b>To:</b> starlingx-discuss@lists.starlingx.io; Ngo, Tee; Wensley, Barton<br>
<b>Cc:</b> Miller, Frank<br>
<b>Subject:</b> [Container] docker daemon proxy issue clarification<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi Bart and Tee,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">To clarify the docker daemon proxy issue discussed in review comments[0], I move the discussion here for a clear view.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The question is, docker daemon proxy setting in starlingx is not the same as current docker doc[1]. The difference is we in starlingx only create http-proxy.conf for HTTP_PROXY, HTTPS_PROXY, NO_PROXY setting, while the document suggests
http-proxy.conf for HTTP_PROXY and https-proxy for HTTPS_PROXY. Does it impact the docker daemon proxy setting?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">That might be a little confused of the terminology of above file name and environment variable name. HTTP_PROXY means all the target url requests go via this proxy server if the request type is http, and the same meaning as HTTPS_PROXY,
not the proxy server type itself is http or https. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Through my test of docker daemon proxy and golang net lib (used by docker daemon proxy connection) code[2] , the http-proxy.conf and https-proxy.conf have the same target just to set HTTP_PROXY/HTTPS_PROXY/NO_PROXY environment variables
to golang net lib. The file name of the conf does not impact the proxy setting. I even renamed http-proxy.conf to test.conf and got a successful pulling from http registry and both https registry through proxy. So I don’t think following current docker proxy
setting doc is a must.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Moreover, as I said in the review comments[0], starlingx docker daemon proxy setting was the official approach(only one http-proxy.conf file) at some time in 2018, but it’s disappeared. Some technical articles[3][4][5] indicates that this
setting approach is valid. Therefore, I think current starlingx approach for docker daemon proxy setting is valid and no changes needed.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The remaining question from Tee to test https proxy is not the same as above. To use a https proxy server, the setting should be:<o:p></o:p></p>
<p class="MsoNormal">HTTP_PROXY=https://proxy.url:port<o:p></o:p></p>
<p class="MsoNormal">HTTPS_PROXY=https://proxy.url:port<o:p></o:p></p>
<p class="MsoNormal">No matter these environment variables are set in http-proxy.conf or https-proxy.conf or test.conf.<o:p></o:p></p>
<p class="MsoNormal">If test team has a https proxy server, this can be tested by current config mechanism.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">[0] <a href="https://review.opendev.org/#/c/661825/">https://review.opendev.org/#/c/661825/</a><o:p></o:p></p>
<p class="MsoNormal">[1] <a href="https://docs.docker.com/config/daemon/systemd/#httphttps-proxy">
https://docs.docker.com/config/daemon/systemd/#httphttps-proxy</a><o:p></o:p></p>
<p class="MsoNormal">[2] <a href="https://github.com/golang/net/blob/master/http/httpproxy/proxy.go#L28">
https://github.com/golang/net/blob/master/http/httpproxy/proxy.go#L28</a><o:p></o:p></p>
<p class="MsoNormal">[3] <a href="https://www.ibm.com/support/knowledgecenter/en/SSBS6K_3.1.2/installing/install_proxy.html">
https://www.ibm.com/support/knowledgecenter/en/SSBS6K_3.1.2/installing/install_proxy.html</a><o:p></o:p></p>
<p class="MsoNormal">[4] <a href="https://elegantinfrastructure.com/docker/ultimate-guide-to-docker-http-proxy-configuration/">
https://elegantinfrastructure.com/docker/ultimate-guide-to-docker-http-proxy-configuration/</a><o:p></o:p></p>
<p class="MsoNormal">[5] <a href="https://www.thegeekdiary.com/how-to-configure-docker-to-use-proxy/">
https://www.thegeekdiary.com/how-to-configure-docker-to-use-proxy/</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best Regards,<o:p></o:p></p>
<p class="MsoNormal">Mingyuan<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
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