Anyone out there working with Docker swarm where applications need to access a shared filesystem across the swarm? I know how to link containers together inside a host, but I don't think you can link to a container on a different host.
Specifically I'm looking at taking some forums and WordPress sites and moving them from single-host containers into Swarm services, without disrupting the ability to do file uploads for attachments, user avatars, etc. I saw some references to running a Gluster swarm and using those as a container, but I haven't found much in the way of detail on that. Flocker looks interesting, but doesn't seem like it handles all the cases that I'm looking for. Or maybe I should just look at creating a replicated filesystem across the Docker host servers and then pointing the Swarm containers at subdirectories off of that shared filesystem. I'm sure it has to be a known issue, but with Swarm being so new, it's hard to find a lot of documentation around this scenario right now... or at least, trying to sift through the noise to find the signal. Thanks! --Morgan
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