Roles Associated with the Cloudera Data Science Workbench Service

Runs the Kubernetes master components on the CDSW master host.

The Master role must only be assigned to the Cloudera Data Science Workbench master host.

Runs the Kubernetes worker/host components on the CDSW worker hosts.

The Worker role must be assigned to all Cloudera Data Science Workbench worker hosts. Do not assign the Master and Worker roles to the same host . Even if you are running a single-host proof-of-concept deployment, the single Master host will be able to run user workloads just as a worker host can.

Runs underlying Docker processes on all Cloudera Data Science Workbench hosts.

The Docker Daemon role must be assigned to every Cloudera Data Science Workbench gateway host.

Runs the Cloudera Data Science Workbench web application. The Application role must only be assigned to the Cloudera Data Science Workbench master host.

As of version 1.6, the Application role can be restarted independently of the other roles. However, the Master role must not be restarted independently of the Application role.

Similarly, do not attempt to restart the underlying Docker Daemon role while the Master/Worker roles are still running on a host. This will result in the operation hanging indefinitely. To avoid this, always perform a full service restart.