eucm/storm repository overview

⁠dockerized-storm

Scripts to launch Storm⁠ servers via docker-compose⁠ or docker⁠

The folders contain Dockerfiles to install and launch

• nimbus
• supervisor
• ui

Additionally, the main docker-compose.yml launches ZooKeeper⁠ and Kafka⁠; and the storm folder contains a base container from which nimbus, supervisor and ui extend.

⁠Basic use

1. Install docker-compose⁠ (which requires docker⁠ itself).
2. docker-compose up kzk &
3. (wait for above command to report that ZooKeeper and Kafka are up and running)
4. docker-compose up nimbus &
5. (wait for nimbus to be up and running)
6. docker-compose up ui supervisor &

You can check that everything is working by pointing a browser at localhost:8081 (storm-ui). Ports can be easily altered by modifying docker-compose.yml (eg.: changing the ui port to 8081:8082 would expose it on localhost:8082 instead.

⁠Dependencies

docker-compose simplifies launching several linked containers. In our case, nimbus requires kzk (actually, only ZooKeeper); and supervisor, ui require both nimbus and kzk (again, only ZooKeeper).

Unfortunately, there is no built-in way to make docker-compose wait for a service to be up and ready before launching another service. Hence, wait-steps 2 and 3 in the "Basic use" section.

⁠Scaling up

For truly large deployments, redundant zookeeper servers would be required. This is currently not supported. You can, however, scale up the actual storm worker nodes by launching several supervisor instances. For example:

docker-compose scale supervisor=3 && docker-compose up supervisor

Results in 3 supervisor nodes, with 4 worker nodes each, for a grand total of 12 nodes.