Book Image

Cloudera Administration Handbook

By : Rohit Menon
Book Image

Cloudera Administration Handbook

By: Rohit Menon

Overview of this book

Table of Contents (17 chapters)
Cloudera Administration Handbook
Credits
Notice
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Role management in Cloudera Manager


Cloudera Manager uses roles to define the configuration of different hosts in a cluster. Each role will have a certain set of properties and configurations defined that can be applied to a node in the cluster. The role applied to a node will define the different Hadoop services that will run on that specific node.

The following is the list of a few roles applied to a host by Cloudera Manager:

  • Balancer: This role is responsible for balancing the blocks across the different nodes on the cluster

  • DataNode: This role defines all the configurations required to start a datanode on the host

  • NameNode: This role defines all the configurations required to start a namenode on the host

  • SecondaryNameNode: This role defines all the configurations required to start a secondary namenode on the host

  • JobTracker: This role defines all the configurations required to start a jobtracker on the host

  • TaskTracker: This role defines all the configurations required to start a tasktracker...