[Container-tools] Fedora Rolekit & Nulecule

[Václav Pavlín]

Attendees: vpavlin, sgallagher

Stephen is working on a feature for containerizing Server Roles:

https://fedoraproject.org/wiki/Changes/Containerized_Server_Roles

This work could benefit from Nulecule spec as it would make it easy for 
administrators to start (small) locally and then move to a 
bigger/more-cloudy environment.

Roles can consist of one or more containerized applications which would 
be packaged as Nulecules and would be deployed through rolekit tool. 
Rolekit tool should use Atomic App in the background. To make it easy 
for rolekit to communicate with Atomic App we should think about adding 
REST API not only to gather logs as implemented in [1] but also to 
control the tool - even Cockpit or Foreman could benefit from that.

Another topic was that Fedora Serve Roles should not depend on Docker 
registry being available thus Atomic App should be able to build the 
images needed to run the applications. We don't have the explicit 
connection to the Dockerfile or the "binary" image specified in Nulecule 
spec, but it seems we will need it in the future.

My first thought about how to solve this for Roles specificaly would 
mean to be able to package Dockerfile as an artifact and being able to 
build it prior to run.

Regards,
Vašek


[1] https://github.com/projectatomic/atomicapp/pull/99

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