stratos-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Imesh Gunaratne <im...@apache.org>
Subject Re: Introducing Kubernetes Service Types in Apache Stratos
Date Sun, 02 Aug 2015 11:43:41 GMT
Hi Pubudu,

Yes please go ahead with this improvement. May be in the port mapping
definition the new property can be called "kubernetesPortType".

Thanks

On Thu, Jul 30, 2015 at 1:49 AM, Pubudu Gunatilaka <pubudug@wso2.com> wrote:

> Hi Devs,
>
> Currently I am working on $subject. In Kubernetes there are 3 kinds of
> services types. They are NodePort, ClusterIP and LoadBalancer [1]. At the
> moment Stratos supports only NodePort type. My intention is to extend this
> to have ClusterIP type as well.
>
> *Why We Need ClusterIP*
>
> 1. NodePort type has limited number of ports. i.e 30000 to 32767.
> 2. There can be situations where we need to expose some ports for
> communication between containers only. In this kind of situation we can use
> ClusterIP type to save limited port numbers.
>
> *Design Decisions *
>
> 1. When creating a cartridge for kubernetes, you need to specify the type
> in PortMapping as either NodePort or ClusterIP. This should be done for
> every port mapping defined in the cartridge for kubernetes.
> 2. If you have set the type as ClusterIP, Access URLs are not generated.
>
> *Identified Improvements to be done in the future releases*
>
> 1. There is no mechanism to reuse already used port which is vacant.
> 2. Currently we generate a service for every port mapping. But a service
> can have multiple port mappings. We can improve to have a single service
> with multiple port mappings.
>
>
> Please share your thoughts!
>
> [1] -
> https://github.com/GoogleCloudPlatform/kubernetes/blob/master/docs/user-guide/services.md#external-services
>
> Thank you!
>
> --
>
> *Pubudu Gunatilaka*
> Software Engineer
> WSO2, Inc.: http://wso2.com
> lean.enterprise.middleware
> mobile:  +94 77 4078049
>



-- 
Imesh Gunaratne

Senior Technical Lead, WSO2
Committer & PMC Member, Apache Stratos

Mime
View raw message