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From Imesh Gunaratne <im...@apache.org>
Subject Re: autoscaling - load average and memory consumption on docker/lxc instances
Date Wed, 28 May 2014 10:16:21 GMT
Hi Chris,

Thanks for the quick response.
Right, I still don't get why we cannot adjust the threshold values and fix
it.

Thanks


On Wed, May 28, 2014 at 11:37 AM, chris snow <chsnow123@gmail.com> wrote:

> Hi Imesh,
>
> I haven't looked into this in any more detail. All I have done is removed
> those parameters from my auto scaling policy.
>
> Many thanks,
> Chris
> On 28 May 2014 05:58, "Imesh Gunaratne" <imesh@apache.org> wrote:
>
>> Hi Chris,
>>
>> Were you able to check the memory consumption and load average values
>> sent to Autoscaler by any chance?
>>
>> Thanks
>>
>>
>> On Mon, May 26, 2014 at 6:31 PM, chris snow <chsnow123@gmail.com> wrote:
>>
>>> Hi Lahiru,
>>>
>>> It looks like there's some good info here [1].  However, as a first
>>> step, I was wondering whether we should add a note to the wiki to
>>> recommend not using the memory consumption or load average parameters
>>> for docker/lxc guests [2]?
>>>
>>> Cheers,
>>>
>>> Chris
>>>
>>> ---
>>> [1]
>>> http://blog.docker.io/2013/10/gathering-lxc-docker-containers-metrics/
>>> [2
>>> https://cwiki.apache.org/confluence/display/STRATOS/4.0.0+Auto-scaling+Guide#id-4.0.0Auto-scalingGuide-memoryConsumptio
>>>
>>> On Mon, May 26, 2014 at 1:24 PM, Lahiru Sandaruwan <lahirus@wso2.com>
>>> wrote:
>>> > Hi Chis.
>>> >
>>> >
>>> > On Mon, May 26, 2014 at 5:27 PM, chris snow <chsnow123@gmail.com>
>>> wrote:
>>> >>
>>> >> Hi Guys,
>>> >>
>>> >> I noticed on my stratos+openstack+docker installation that stratos was
>>> >> getting into a cycle trying to spawn new instances.
>>> >>
>>> >> I think this is because load average (and probably memory consumption)
>>> >> on lxc/docker instances is the same value as for the host [1].
>>> >>
>>> >> Question: Am I correct in thinking that load average and memory
>>> >> consumption autoscaling parameters aren't a good idea for docker
>>> >> guests?
>>> >
>>> >
>>> > Is there a way to find out the load average and memory consumption of
>>> the
>>> > guest?
>>> >
>>> > I think the proper solution is to customize/fix Cartridge agent find
>>> out
>>> > relevant values in these type of environments and publish stats to CEP.
>>> >
>>> > Thanks.
>>> >>
>>> >>
>>> >> Many thanks,
>>> >>
>>> >> Chris
>>> >>
>>> >> ---
>>> >> [1]
>>> >>
>>> http://unix.stackexchange.com/questions/132021/is-a-lxc-docker-guest-load-average-the-same-as-the-hosts-load-average
>>> >
>>> >
>>> >
>>> >
>>> > --
>>> > --
>>> > Lahiru Sandaruwan
>>> > Committer and PMC member, Apache Stratos,
>>> > Senior Software Engineer,
>>> > WSO2 Inc., http://wso2.com
>>> > lean.enterprise.middleware
>>> >
>>> > email: lahirus@wso2.com cell: (+94) 773 325 954
>>> > blog: http://lahiruwrites.blogspot.com/
>>> > twitter: http://twitter.com/lahirus
>>> > linked-in: http://lk.linkedin.com/pub/lahiru-sandaruwan/16/153/146
>>> >
>>>
>>>
>>>
>>> --
>>> Check out my professional profile and connect with me on LinkedIn.
>>> http://lnkd.in/cw5k69
>>>
>>
>>
>>
>> --
>> Imesh Gunaratne
>>
>> Technical Lead, WSO2
>> Committer & PPMC Member, Apache Stratos
>>
>


-- 
Imesh Gunaratne

Technical Lead, WSO2
Committer & PPMC Member, Apache Stratos

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