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Cloudera Administration Handbook by Rohit Menon

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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 ...

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