Adding and Removing Worker Hosts The following topics describe how to add and remove worker hosts from Cloudera Data Science Workbench. Adding a Worker Host Using Cloudera ManagerWorker hosts are not required for a fully-functional Cloudera Data Science Workbench deployment. For proof-of-concept deployments, you can deploy a 1-host cluster with just a Master host. The Master host can run user workloads just as a worker host can. Adding a Worker Host Using PackagesWorker hosts are not required for a fully-functional Cloudera Data Science Workbench deployment. For proof-of-concept deployments, you can deploy a 1-host cluster with just a Master host. The Master host can run user workloads just as a worker host can. Validating Sessions on New Worker HostAfter adding one or more worker hosts or nodes to your cluster, you should validate that the CDSW/CML sessions run properly on the new hosts. If you do not validate that the sessions run properly on the new hosts, you might find intermittent issues that are difficult to debug when a session is scheuled on the worker host. Removing a Worker Host Using Cloudera ManagerPerform the following steps to remove a worker host from Cloudera Data Science Workbench using Cloudera Manager.Removing a Worker Host Using PackagesPerform the following steps to remove a worker host from Cloudera Data Science Workbench using Packages.Parent topic: Managing Cloudera Data Science Workbench Hosts