store repositories in s3

[jblancett]

I would like to suggest adding a feature to store repositories in s3.
This would mainly be for high availability purposes.
I can already do this with latest docker-registry, so Gandalf is the only thing left I can't reliably replicate.
This would only be for the file storage, mongodb entries would be replicated separately using mongo clustering

A usage example would be having two different servers running gandalf, sharing an s3 bucket to store files, and connecting to a shared mongodb cluster

[fsouza]

I think that this feature is more related to the setup itself than to code. Unfortunately, git + ssh will still require us to use an old style hierarchical filesystem, or something that looks like one. So we could use a FUSE module that allows users to mount S3 buckets in local directories, making all the S3 calls when running filesystem operations.

I will run some experiments with this approach and try to document it, if everything goes fine!

[jblancett]

I had considered that approach but have run into issues doing similar things in the past with the fuse s3 module. Maybe it could work out though. When I get a chance I'll try it out as well
Thanks