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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Yes, that is an alternative. The complication is how to secure the communication between Magnum bays and the standalone docker registry. I assume we needs some
custom logic to setup the communication channel (i.e. install the TLS credential). One way to support it is to add a configuration hook [1] that allows operators to customize the setup. Pre-built docker images into the glance image is another approach. I think
Magnum can offer both.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">[1] https://blueprints.launchpad.net/magnum/+spec/allow-user-softwareconfig <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hongbin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Fox, Kevin M [mailto:Kevin.Fox@pnnl.gov]
<br>
<b>Sent:</b> April-19-16 1:12 PM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> Re: [openstack-dev] [Magnum]Cache docker images<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">why not just allow a prefix to be added to the container name?<br>
<br>
you can then have a container named:<br>
foo/mycontainer<br>
<br>
and the prefix could be set to mylocalserver.org:8080:<br>
mylocalserver.org:8080/foo/mycontainer<br>
<br>
Then if the site needs local only containers, they can set up a local repo. Be it a stand alone docker registry, the docker datacenter product, artifactory with the docker plugin, etc.<br>
<br>
Thanks,<br>
Kevin <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">
</span><span lang="ZH-CN" style="font-size:10.0pt;color:black">Íõ»ª</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"> [wanghua.humble@gmail.com]<br>
<b>Sent:</b> Monday, April 18, 2016 7:57 PM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> [openstack-dev] [Magnum]Cache docker images</span><span style="font-family:"Times New Roman","serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">Hi all,
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">We want to eliminate pulling docker images over the Internet on bay provisioning. There are two problems of this approach:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">1. Pulling docker images over the Internet is slow and fragile.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">2. Some clouds don't have external Internet access.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">It is suggested to build all the required images into the cloud images to resolved the issue.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">Here is a solution:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">We export the docker images as tar files, and put the tar files into a dir in the image when we build the image. And we add scripts to load the tar files in cloud-init, so
that we don't need to download the docker images.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">Any advice for this solution or any better solution?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">Regards,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Times New Roman","serif";color:black">Wanghua<o:p></o:p></span></p>
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