Docker images *stratos/base-image:4.1.0-alpha* and
*stratos/php:4.1.0-alpha* are
now updated in Docker Hub. I'm now investigating health statistics
publishing issue in agent.

Thanks

On Fri, Jan 2, 2015 at 11:10 AM, Imesh Gunaratne <[email protected]> wrote:

> With the above change *stratos/php:4.1.0-alpha* docker image in Docker
> Hub has been invalidated, I'm now updating the agent and creating the php
> image again.
>
> Thanks
>
> On Fri, Jan 2, 2015 at 3:30 AM, Imesh Gunaratne <[email protected]> wrote:
>
>> I have now done the initial changes to introduce above member events and
>> pushed changes to master branch:
>>
>> - Introduced new events Member-Created and Member-Initialized
>> - Updated messaging component accordingly
>> - Moved member IP addresses properties to Member-Initialized event
>> - Updated Python Agent to initialize its state based on
>> Member-Initialized event
>> - Updated cloud controller logic to terminate the member if member
>> creation process fails in the middle.
>> - Verified mock iaas single-cartridge sample with the above changes.
>>
>> Thanks
>>
>> On Fri, Jan 2, 2015 at 2:27 AM, Imesh Gunaratne <[email protected]> wrote:
>>
>>> s/there is not possibility/there is no possibility/g
>>>
>>> On Fri, Jan 2, 2015 at 2:21 AM, Imesh Gunaratne <[email protected]>
>>> wrote:
>>>
>>>> Hi Devs,
>>>>
>>>> This is to discuss $subject. As we found in other mail threads, there
>>>> is a fundamental problem in the logic how Autoscaler/Cloud Controller
>>>> communication is done in terms of managing the lifecycle of the members.
>>>> This problem only affects in certain scenarios when members do not start as
>>>> expected.
>>>>
>>>> *InstanceSpawnedEvent:*
>>>> Above problem starts with this event: This event name implies that it
>>>> should be published soon after instance is spawned by the IaaS. However it
>>>> has properties to send IP addresses. These requirements conflicts, IP
>>>> addresses will only be available after certain time period once the
>>>> instance is spawned.
>>>>
>>>> Inaddition to the above conflicting requirements, Python Agent waits
>>>> for this event to initialize the agent instance. If this event is sent soon
>>>> after the instance is spawned there is not possibility that agent could
>>>> receive this event.
>>>>
>>>> One other problem is that we have used a convention when naming events
>>>> in Instance Status topic. All the events under Instance Status topic starts
>>>> with the term "Instance" and all corresponding events in the topology topic
>>>> starts with the term "Member".
>>>>
>>>> Due to above reasons I think we could introduce two events called
>>>> "Member-Created" and "Member-Initialized" as follows:
>>>>
>>>>
>>>> Thanks
>>>> ​
>>>>
>>>>
>>>> --
>>>> Imesh Gunaratne
>>>>
>>>> Technical Lead, WSO2
>>>> Committer & PMC Member, Apache Stratos
>>>>
>>>
>>>
>>>
>>> --
>>> Imesh Gunaratne
>>>
>>> Technical Lead, WSO2
>>> Committer & PMC Member, Apache Stratos
>>>
>>
>>
>>
>> --
>> Imesh Gunaratne
>>
>> Technical Lead, WSO2
>> Committer & PMC Member, Apache Stratos
>>
>
>
>
> --
> Imesh Gunaratne
>
> Technical Lead, WSO2
> Committer & PMC Member, Apache Stratos
>



-- 
Imesh Gunaratne

Technical Lead, WSO2
Committer & PMC Member, Apache Stratos

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