Support for Docker image as a CF Service?

[charyorde]

Currently, cf docker-push provisions a docker image as an app. Would there be support for provisioning same as a CF service?

Use case: Provision an Eureka service running in a docker container as a service instance for a CF app

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this. You can view the current status of your issue at: https://www.pivotaltracker.com/story/show/95766954.

[georgethebeatle]

This is an open question, I believe. Right now Cloud Foundry is best used to run 12 Factor Apps which have no persistent state and are disposable. There is no problem to run such an app behind a service broker and use it as a service, but this would mean that any persistent data the service might keep will be lost when you kill the app, which is not too useful. This problem is something that attracted some attention on this year's CF Summit. If you're interested I reccommend the following talks:
Service Foundry
The Road to Persistence on CF Diego

Let's see where it goes.

[charyorde]

Thanks. Any available design docs on the micro-data-services/12-factor data app? For example, the choice cluster technology as well as what diego submodule handles this?

[charyorde]

What's the underlying technology that creates the volumes? Would it be docker-based such as docker device-mapper

[emalm]

Hi, @charyorde,

The presentation that @tedsuo and @calebamiles gave at the 2015 CF Summit was based on a short research project they conducted earlier this year, which focused more on exploring the scheduling and orchestration concepts required to provide persistent volumes to containers than on producing a production-ready system. They might be able to comment further, but I don't believe they had a particular implementation in mind for creating the volumes. More of the technical details of their project are preserved in the 'persist' branch of diego-release.

If you're not as concerned with maintaining persistence of the service instance, you would be able to deploy it as a CF app and then supply it as a user-provided service instance to another app running on the platform. This Spring blog post gives examples and other references for doing this with some of the OSS Netflix tools such as Eureka.

Thanks,
Eric

[emalm]

Closing this out.