Dockerizing Scalaris with containers scattered over the network

Experimentation using Weave in order to set up a Scalaris cluster with containers scattered across different Hosts.

Setup

First, we launch 3 Virtual Machines with static IP addresses using Vagrant:

vagrant up

Then ssh into each of the 3 VMs

vagrant ssh host0
vagrant ssh host1
vagrant ssh host2

Running the Scalaris cluster

In order to run the Scalaris Ring through containers on different hosts, we'll use Weave. For each host, we launch the Weave network and run a Scalaris Node through the Weave command line tool. The container is parameterized with environment variables.

If you want your node to be the initiator of the cluster just give the same IP for JOIN_IP and LISTEN_ADDRESS.

Host 0 (Initiator)

sudo weave launch 10.2.0.1/16 192.168.42.101 192.168.42.102
sudo weave run 10.2.1.3/24 -d --name first -p 8000:8000 -e JOIN_IP=10.2.1.3 -e LISTEN_ADDRESS=10.2.1.3 abronan/scalaris-weave

Host 1

sudo weave launch 10.2.0.1/16 192.168.42.100 192.168.42.102
sudo weave run 10.2.1.4/24 -d --name second -p 8000:8000 -e JOIN_IP=10.2.1.3 -e LISTEN_ADDRESS=10.2.1.4 abronan/scalaris-weave

Host 2

sudo weave launch 10.2.0.1/16 192.168.42.100 192.168.42.101
sudo weave run 10.2.1.5/24 -d --name third -p 8000:8000 -e JOIN_IP=10.2.1.3 -e LISTEN_ADDRESS=10.2.1.5 abronan/scalaris-weave

Testing the cluster

You can now access the Scalaris web interface through each Hosts (the port 8000 is mapped from the container):

http://192.168.42.100:8000

http://192.168.42.101:8000

http://192.168.42.102:8000

Store a simple Key/Value pair, then search for it. It works!