In this chapter, we are going to start with deployment of Storm on multiple node (three Storm and three ZooKeeper) clusters. This chapter is very important because it focuses on how we can set up the production Storm cluster and why we need the high availability of both the Storm Supervisor, Nimbus, and ZooKeeper (as Storm uses ZooKeeper for storing the metadata of the cluster, topology, and so on)?
The following are the key points that we are going to cover in this chapter:
- Deployment of the Storm cluster
- Program and deploy the word count example
- Different options of the Storm UI--kill, active, inactive, and rebalance
- Walkthrough of the Storm UI
- Dynamic log level settings
- Validating the Nimbus high availability
