JGroups and Docker

I've uploaded an image with JGroups and a few demos to DockerHub [2].

The image is based on Fedora 20 and contains JGroups, plus a few scripts which run a chat demo, a distributed lock demo and a distributed counter demo.

To run this, it's as simple as executing

docker run -it belaban/jgroups

This will drop you into a bash shell and you're ready to run any of the three demos.

Start multiple containers and you have a cluster in which you can try out things, e.g. a cluster node acquiring a lock, another node trying to acquire it and blocking, the first node crashing and the second node finally acquiring the lock etc.

Note that this currently runs a cluster on one physical box. I'll still need to investigate what needs to be done to run Docker containers on different hosts and cluster them [3].

The Dockerfile is at [1] and can be used to derive another image from it, or to build the image locally.

[1] https://github.com/belaban/jgroups-docker

[2] https://registry.hub.docker.com/u/belaban/jgroups/

[3] https://issues.jboss.org/browse/JGRP-1840