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Re: [atomic-devel] dependencies for spc containers on atomic hosts

On Fri, Aug 21, 2015, at 09:07 AM, Tobias Florek wrote:
> Hi,
> is there a way to specify dependencies for (spc) containers that provide
> some service? 

This is an interesting topic; both raw docker and kubernetes lack
dependency mechanisms.  I think down the line, kubernetes is going
to have to grow this to some degree.  Currently one can basically just
do retry/backoff loops in applications.

> Is nulecule the way to do it? If so, is there some
> "atomic" provider that installs all containers that a nulecule specifies?

We don't have a best practice around this yet that I'm aware of, but I would
approach it with systemd units whose ExecStart=docker run.  (Or if you want
in the future, drop to runc, or use systemd-nspawn)

I think you could indeed use nulecule to handle pulling multiple images
and generating unit files to install them.

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