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Granted, merge deadline March 24, no impact expected in core components
(fuel-library, fuel-web, fuel-ui).

-- 
Dmitry Borodaenko


On Tue, Mar 01, 2016 at 04:22:05PM +0300, Oleg Gelbukh wrote:
> Greetings,
> 
> As you might know, we are working on centralised storage for
> deployment configuration data in Fuel. Such store will allow external
> 3rd-party services to consume the entirety of settings provided by
> Fuel to deployment mechanisms on target nodes. It will also allow to
> manage and override the settings via simple client application.
> 
> This change is required to enable Puppet Master based LCM solution.
> 
> We request a FFE for this feature for 3 weeks, until Mar 24. By that
> time, we will provide tested solution in accordance with the following
> specifications [1] [2]
> 
> The feature includes 3 main components:
> 1. Extension to Nailgun API with separate DB structure to store serialized data
> 2. Backend library for Hiera to consume the API in question to lookup
> values of the certain parameters
> 3. Astute task to download all serialized data from nodes and upload
> them to ConfigDB API upon successful deployment of cluster
> 
> Since introduction of stevedore-based extensions [3], we could develop
> extensions in separate code repos. This makes change to Nailgun
> non-intrusive to core code.
> Backend library will be implemented in fuel-library code tree and
> packaged as a sub-package. This change also doesn't require changes in
> the core code.
> Astute task will add a task in the flow. We will make this task
> configurable, i.e. normally this code path won't be used at all. It
> also won't touch core code of Astute.
> 
> Overall, I consider this change as low risk for integrity and timeline
> of the release.
> 
> Please, consider our request and share concerns so we could properly
> resolve them.
> 
> [1] https://blueprints.launchpad.net/fuel/+spec/upload-deployment-facts-to-configdb
> [2] https://blueprints.launchpad.net/fuel/+spec/serialized-facts-nailgun-api
> [3] https://blueprints.launchpad.net/fuel/+spec/stevedore-extensions-discovery
> 
> --
> Best regards,
> Oleg Gelbukh
> Mirantis Inc.
> 
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