Hi Imesh,

On Wed, Aug 20, 2014 at 3:45 AM, Imesh Gunaratne <[email protected]> wrote:

> If we group a Docker/Core OS host as a partition, if the host goes down
> the entire partition will be unavailable.
>

+1, [1] reveals a bit about Amazon definition. I think we can define the
zones and regions based on network latency.  A zone can have one or many
hosts but with lesser network latency than region.

IaaS designer can analyse his resources to choose which network latency
levels(X, Y, and Z), that he need to define for Zones and Regions, such
that,

Latency between two hosts in a zone < X
X < Latency between two hosts in two different zones < Y
Y < Latency between two hosts in two different regions < Z

Thanks.

[1]
http://harish11g.blogspot.com/2012/07/amazon-availability-zones-aws-az.html

>
> Core OS uses a similar concept in clustering to avoid this problem:
> https://coreos.com/using-coreos/clustering/
>
> Will us be able to span a partition among multiple hosts?
>
>
> On Tue, Aug 19, 2014 at 11:32 AM, Lahiru Sandaruwan <[email protected]>
> wrote:
>
>> mm.. Then why a sub-partition? May be i should wait on the other thread
>> you start.
>>
>>
>> On Tue, Aug 19, 2014 at 12:43 AM, Nirmal Fernando <[email protected]
>> > wrote:
>>
>>>
>>>
>>>
>>> On Tue, Aug 19, 2014 at 12:50 PM, Lahiru Sandaruwan <[email protected]>
>>> wrote:
>>>
>>>> Hi Nirmal,
>>>>
>>>>
>>>> On Mon, Aug 18, 2014 at 11:42 PM, Nirmal Fernando <
>>>> [email protected]> wrote:
>>>>
>>>>> Hi All,
>>>>>
>>>>> We need to clearly understand the mapping of Stratos concepts against
>>>>> each deployment type in order to provide Docker support in Stratos. Please
>>>>> see the following table and let me know your thoughts.
>>>>>
>>>>>
>>>>> Deployment Type
>>>>> ------------------------------
>>>>>
>>>>> Stratos Concept
>>>>> Virtual Machines Docker on Bare Metal Docker on CoreOS in an IaaS
>>>>>
>>>>> Cartridge Instance
>>>>>
>>>>> a VM
>>>>>
>>>>> a Docker Process
>>>>>
>>>>> a Docker Process
>>>>>
>>>>> Partition
>>>>>
>>>>> an Availability Zone
>>>>>
>>>>> a Docker Host VM
>>>>>
>>>>> a CoreOS Host VM
>>>>>
>>>>> Network Partition
>>>>>
>>>>> a Region
>>>>>
>>>>> a set of Docker Host VMs
>>>>>
>>>>> a cluster of CoreOS VMs
>>>>>
>>>>>
>>>>> With the introduction of Docker, I feel like we need a
>>>>> sub-partitioning concept to cater in-container auto-scaling feature. I'll
>>>>> start a separate thread to discuss my findings on this.
>>>>>
>>>>
>>>> I did not get what is "in-container auto-scaling" means?  Do you mean
>>>> creating(auto-scaling) several docker processes in docker host for e.g.?
>>>>
>>>
>>> Yes Lahiru.
>>>
>>>>
>>>> Thanks.
>>>>
>>>>
>>>>
>>>>>
>>>>> --
>>>>> Best Regards,
>>>>> Nirmal
>>>>>
>>>>> Nirmal Fernando.
>>>>> PPMC Member & Committer of Apache Stratos,
>>>>> Senior Software Engineer, WSO2 Inc.
>>>>>
>>>>> Blog: http://nirmalfdo.blogspot.com/
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> --
>>>> Lahiru Sandaruwan
>>>> Committer and PMC member, Apache Stratos,
>>>> Senior Software Engineer,
>>>> WSO2 Inc., http://wso2.com
>>>> lean.enterprise.middleware
>>>>
>>>> email: [email protected] 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
>>>>
>>>>
>>>
>>>
>>> --
>>> Best Regards,
>>> Nirmal
>>>
>>> Nirmal Fernando.
>>> PPMC Member & Committer of Apache Stratos,
>>> Senior Software Engineer, WSO2 Inc.
>>>
>>> Blog: http://nirmalfdo.blogspot.com/
>>>
>>
>>
>>
>> --
>> --
>> Lahiru Sandaruwan
>> Committer and PMC member, Apache Stratos,
>> Senior Software Engineer,
>> WSO2 Inc., http://wso2.com
>> lean.enterprise.middleware
>>
>> email: [email protected] 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
>>
>>
>
>
> --
> Imesh Gunaratne
>
> Technical Lead, WSO2
> Committer & PPMC Member, Apache Stratos
>



-- 
--
Lahiru Sandaruwan
Committer and PMC member, Apache Stratos,
Senior Software Engineer,
WSO2 Inc., http://wso2.com
lean.enterprise.middleware

email: [email protected] 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

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