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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.

On Fri, Nov 27, 2015 at 12:01 AM, Hongbin Lu <hongbin.lu at huawei.com> wrote:

> Jay,
>
>
>
> 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.
>
>
>
> In summary, I think the correct strategy is to selectively containerize
> some COE daemons, but we don’t have to containerize **all** COE daemons.
>
>
>
> [1] https://blueprints.launchpad.net/magnum/+spec/mesos-bay-with-coreos
>
>
>
> Best regards,
>
> Hongbin
>
>
>
> *From:* Jay Lau [mailto:jay.lau.513 at gmail.com]
> *Sent:* November-26-15 2:06 AM
> *To:* OpenStack Development Mailing List (not for usage questions)
> *Subject:* Re: [openstack-dev] [magnum] Using docker container to run COE
> daemons
>
>
>
> Thanks Kai Qing, I filed a bp for mesos bay here
> https://blueprints.launchpad.net/magnum/+spec/mesos-in-container
>
>
>
> On Thu, Nov 26, 2015 at 8:11 AM, Kai Qiang Wu <wkqwu at cn.ibm.com> wrote:
>
> Hi Jay,
>
> For the Kubernetes COE container ways, I think @Hua Wang is doing that.
>
> For the swarm COE, the swarm already has master and agent running in
> container
>
> For the mesos, it still not have container work until now, Maybe someone
> already draft bp on it ? Not quite sure
>
>
>
> Thanks
>
> Best Wishes,
>
> --------------------------------------------------------------------------------
> Kai Qiang Wu (吴开强 Kennan）
> IBM China System and Technology Lab, Beijing
>
> E-mail: wkqwu at cn.ibm.com
> Tel: 86-10-82451647
> Address: Building 28(Ring Building), ZhongGuanCun Software Park,
> No.8 Dong Bei Wang West Road, Haidian District Beijing P.R.China 100193
>
> --------------------------------------------------------------------------------
> Follow your heart. You are miracle!
>
> [image: 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]Jay Lau
> ---26/11/2015 07:15:59 am---Hi, It is becoming more and more popular to use
> docker container run some
>
> From: Jay Lau <jay.lau.513 at gmail.com>
> To: OpenStack Development Mailing List <openstack-dev at lists.openstack.org>
> Date: 26/11/2015 07:15 am
> Subject: [openstack-dev] [magnum] Using docker container to run COE
> daemons
> ------------------------------
>
>
>
>
> Hi,
>
> It is becoming more and more popular to use docker container run some
> applications, so what about leveraging this in Magnum?
>
> 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.
>
> 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?
>
> --
> Thanks,
>
> Jay Lau (Guangya Liu)
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>
>
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>
>
>
> --
>
> Thanks,
>
> Jay Lau (Guangya Liu)
>
> __________________________________________________________________________
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>


-- 
Thanks,

Jay Lau (Guangya Liu)
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