<div dir="ltr">One of the benefit of running daemons in docker container is that the cluster can upgrade more easily. Take mesos as an example, if I can make mesos running in container, then when update mesos slave with some hot fixes, I can upgrade the mesos slave to a new version in an gray upgrade， i.e. ABtest etc.<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Nov 27, 2015 at 12:01 AM, Hongbin Lu <span dir="ltr"><<a href="mailto:hongbin.lu@huawei.com" target="_blank">hongbin.lu@huawei.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Jay,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Agree and disagree. Containerize some COE daemons will facilitate the version upgrade and maintenance. However, I don’t think it is correct to blindly containerize
everything unless there is an investigation performed to understand the benefits and costs of doing that. Quoted from Egor, the common practice in k8s is to containerize everything except kublet, because it seems it is just too hard to containerize everything.
In the case of mesos, I am not sure if it is a good idea to move everything to containers, given the fact that it is relatively easy to manage and upgrade debian packages at Ubuntu. However, in the new CoreOS mesos bay [1], meos daemons will run at containers.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">In summary, I think the correct strategy is to selectively containerize some COE daemons, but we don’t have to containerize *<b>all</b>* COE daemons.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">[1]
<a href="https://blueprints.launchpad.net/magnum/+spec/mesos-bay-with-coreos" target="_blank">https://blueprints.launchpad.net/magnum/+spec/mesos-bay-with-coreos</a><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Best regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hongbin<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"> Jay Lau [mailto:<a href="mailto:jay.lau.513@gmail.com" target="_blank">jay.lau.513@gmail.com</a>]
<br>
<b>Sent:</b> November-26-15 2:06 AM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> Re: [openstack-dev] [magnum] Using docker container to run COE daemons<u></u><u></u></span></p>
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<p class="MsoNormal">Thanks Kai Qing, I filed a bp for mesos bay here <a href="https://blueprints.launchpad.net/magnum/+spec/mesos-in-container" target="_blank">
https://blueprints.launchpad.net/magnum/+spec/mesos-in-container</a><u></u><u></u></p>
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<p class="MsoNormal">On Thu, Nov 26, 2015 at 8:11 AM, Kai Qiang Wu <<a href="mailto:wkqwu@cn.ibm.com" target="_blank">wkqwu@cn.ibm.com</a>> wrote:<u></u><u></u></p>
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<p>Hi Jay,<br>
<br>
For the Kubernetes COE container ways, I think @Hua Wang is doing that.<br>
<br>
For the swarm COE, the swarm already has master and agent running in container<br>
<br>
For the mesos, it still not have container work until now, Maybe someone already draft bp on it ? Not quite sure<br>
<br>
<br>
<br>
Thanks<br>
<br>
Best Wishes,<br>
--------------------------------------------------------------------------------<br>
Kai Qiang Wu (<span style="font-family:SimSun" lang="ZH-CN">吴开强</span> Kennan<span style="font-family:SimSun" lang="ZH-CN">）</span><br>
IBM China System and Technology Lab, Beijing<br>
<br>
E-mail: <a href="mailto:wkqwu@cn.ibm.com" target="_blank">wkqwu@cn.ibm.com</a><br>
Tel: 86-10-82451647<br>
Address: Building 28(Ring Building), ZhongGuanCun Software Park, <br>
No.8 Dong Bei Wang West Road, Haidian District Beijing P.R.China 100193<br>
--------------------------------------------------------------------------------<br>
Follow your heart. You are miracle! <br>
<br>
<img src="cid:image001.gif@01D12832.750AC150" alt="Inactive hide details for Jay Lau ---26/11/2015 07:15:59 am---Hi, It is becoming more and more popular to use docker container " border="0" height="16" width="16"><span style="color:#424282">Jay
Lau ---26/11/2015 07:15:59 am---Hi, It is becoming more and more popular to use docker container run some</span><br>
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<span style="font-size:10.0pt;color:#5f5f5f">From: </span><span style="font-size:10.0pt">Jay Lau <<a href="mailto:jay.lau.513@gmail.com" target="_blank">jay.lau.513@gmail.com</a>></span><br>
<span style="font-size:10.0pt;color:#5f5f5f">To: </span><span style="font-size:10.0pt">OpenStack Development Mailing List <<a href="mailto:openstack-dev@lists.openstack.org" target="_blank">openstack-dev@lists.openstack.org</a>></span><br>
<span style="font-size:10.0pt;color:#5f5f5f">Date: </span><span style="font-size:10.0pt">26/11/2015 07:15 am</span><br>
<span style="font-size:10.0pt;color:#5f5f5f">Subject: </span><span style="font-size:10.0pt">[openstack-dev] [magnum] Using docker container to run COE daemons</span><u></u><u></u></p>
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<span style="font-size:13.5pt">Hi,<br>
</span><br>
<span style="font-size:13.5pt">It is becoming more and more popular to use docker container run some applications, so what about leveraging this in Magnum?<br>
</span><br>
<span style="font-size:13.5pt">What I want to do is that we can put all COE daemons running in docker containers, because now Kubernetes, Mesos and Swarm support running in docker container and there are already some existing docker images/dockerfiles which
we can leverage.<br>
</span><br>
<span style="font-size:13.5pt">So what about update all COE templates to use docker container to run COE daemons and maintain some dockerfiles for different COEs in Magnum? This can reduce the maintain effort for COE as if there are new versions and we want
to upgrade, just update the dockerfile is enough. Comments?</span><br>
<span style="font-size:13.5pt"><br>
-- </span><br>
<span style="font-size:13.5pt">Thanks,</span><u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:13.5pt">Jay Lau (Guangya Liu)</span><tt><span style="font-size:10.0pt">__________________________________________________________________________</span></tt><span style="font-size:10.0pt;font-family:"Courier New""><br>
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-- <u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Thanks,<u></u><u></u></p>
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<p class="MsoNormal">Jay Lau (Guangya Liu)<u></u><u></u></p>
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<br></blockquote></div><br><br clear="all"><br>-- <br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Thanks,<br><br></div>Jay Lau (Guangya Liu)<br></div></div></div></div>
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