[openstack-dev] [magnum] Document adding --memory option to create containers

Ton Ngo ton at us.ibm.com
Fri Oct 9 03:23:29 UTC 2015


We should reserve time at the next summit to discuss putting together a
detailed user guide, laying down a skeleton so contributors can start
filling in different parts.
Otherwise as we observe, everything is falling into the quick start guide.
Ton Ngo,



From:	"Qiao,Liyong" <liyong.qiao at intel.com>
To:	openstack-dev at lists.openstack.org
Date:	10/08/2015 06:32 PM
Subject:	Re: [openstack-dev] [magnum] Document adding --memory option to
            create containers



+1, we can add more detail explanation information of --memory in magnum
CLI instead of quick start.

Eli.

On 2015年10月09日 07:45, Vikas Choudhary wrote:
      In my opinion, there should be a more detailed document explaining
      importance of commands and options.
      Though --memory is an important attribute, but since objective of
      quickstart is to get user a minimum working system within minimum
      time, it seems better to skip this option in quickstart.


      -Vikas

      On Fri, Oct 9, 2015 at 1:47 AM, Egor Guz <EGuz at walmartlabs.com>
      wrote:
        Adrian,

        I agree with Steve, otherwise it’s hard to find balance what should
        go to quick start guide (e.g. many operators worry about cpu or I/O
        instead of memory).
        Also I belve auto-scalling deserve it’s own detail document.

        —
        Egor

        From: Adrian Otto <adrian.otto at rackspace.com<mailto:
        adrian.otto at rackspace.com>>
        Reply-To: "OpenStack Development Mailing List (not for usage
        questions)" <openstack-dev at lists.openstack.org<mailto:
        openstack-dev at lists.openstack.org>>
        Date: Thursday, October 8, 2015 at 13:04
        To: "OpenStack Development Mailing List (not for usage questions)"
        <openstack-dev at lists.openstack.org<mailto:
        openstack-dev at lists.openstack.org>>
        Subject: Re: [openstack-dev] [magnum] Document adding --memory
        option to create containers

        Steve,

        I agree with the concept of a simple quickstart doc, but there also
        needs to be a comprehensive user guide, which does not yet exist.
        In the absence of the user guide, the quick start is the void where
        this stuff is starting to land. We simply need to put together a
        magnum reference document, and start moving content into that.

        Adrian

        On Oct 8, 2015, at 12:54 PM, Steven Dake (stdake) <stdake at cisco.com
        <mailto:stdake at cisco.com>> wrote:

        Quickstart guide should be dead dead dead dead simple.? The goal of
        the quickstart guide isn’t to tach people best practices around
        Magnum.? It is to get a developer operational to give them that
        sense of feeling that Magnum can be worked on.? The goal of any
        quickstart guide should be to encourage the thinking that a person
        involving themselves with the project the quickstart guide
        represents is a good use of the person’s limited time on the
        planet.

        Regards
        -steve


        From: Hongbin Lu <hongbin.lu at huawei.com<mailto:
        hongbin.lu at huawei.com>>
        Reply-To: "OpenStack Development Mailing List (not for usage
        questions)" <openstack-dev at lists.openstack.org<mailto:
        openstack-dev at lists.openstack.org>>
        Date: Thursday, October 8, 2015 at 9:00 AM
        To: "OpenStack Development Mailing List (not for usage questions)"
        <openstack-dev at lists.openstack.org<mailto:
        openstack-dev at lists.openstack.org>>
        Subject: [openstack-dev] [magnum] Document adding --memory option
        to create containers

        Hi team,

        I want to move the discussion in the review below to here, so that
        we can get more feedback

        https://review.openstack.org/#/c/232175/

        In summary, magnum currently added support for specifying the
        memory size of containers. The specification of the memory size is
        optional, and the COE won’t reserve any memory to the containers
        with unspecified memory size. The debate is whether we should
        document this optional parameter in the quickstart guide. Below is
        the positions of both sides:

        Pros:
        ·? ? ? ? ?It is a good practice to always specifying the memory
        size, because containers with unspecified memory size won’t have
        QoS guarantee.
        ·? ? ? ? ?The in-development autoscaling feature [1] will query the
        memory size of each container to estimate the residual capacity and
        triggers scaling accordingly. Containers with unspecified memory
        size will be treated as taking 0 memory, which negatively affects
        the scaling decision.
        Cons:
        ·? ? ? ? ?The quickstart guide should be kept as simple as
        possible, so it is not a good idea to have the optional parameter
        in the guide.

        Thoughts?

        [1] https://blueprints.launchpad.net/magnum/+spec/autoscale-bay
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--
BR, Eli(Li Yong)Qiao[attachment "liyong_qiao.vcf" deleted by Ton
Ngo/Watson/IBM]
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