Setting up Zookeeper using Docker

In Chapter 3 , Deploying Microservices on Mesos, we learned a little bit about Zookeeper. To keep it very simple, Zookeeper is a cluster-management tool that is mainly used for storing your cluster configurations. Zookeeper is used by several Apache big data projects such as Mesos, Kafka, and Bookkeeper. In this chapter, we will see how we can use Zookeeper to store our microservice configurations and later use them to perform load-balancing. This recipe will show you how to start Zookeeper and Exhibitor using Docker. Exhibitor is a management interface for Zookeeper. In addition to providing a web interface to manage Zookeeper, it also performs log file cleanups and backups. We will be using the Exhibitor web interface to verify that our service was registered on Zookeeper.

Getting ready

1. We now know that we need two components:
   • Zookeeper
   • Exhibitor

   They could either be two individual containers linked together via docker-compose or could coexist in the same...