General Information.

Apache Ambari is a tool for provisioning, managing, and monitoring Apache Hadoop clusters. Ambari consists of a set of RESTful APIs and a browser-based management interface. 

Ambari enables System Administrators to:

• Provision a Hadoop Cluster
  Ambari provides an easy-to-use, step-by-step wizard for installing Hadoop services across any number of hosts.
  Ambari handles configuration of Hadoop services for the cluster.
• Manage a Hadoop Cluster
  Ambari provides central management for starting, stopping, and reconfiguring Hadoop services across the entire cluster.
• Monitor a Hadoop Cluster
  Ambari provides a dashboard for monitoring health and status of the Hadoop cluster.
  Ambari will send emails when your attention is needed (e.g., a node goes down, remaining disk space is low, etc).

Get started by following Quick Start Guide to deploy a multi-node cluster using Ambari.