Apache Ambari Operations
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Chapter 3. Managing Hosts

As a Cluster administrator or Cluster operator, you need to know the operating status of each hosts. Also, you need to know which hosts have issues that require action. You can use the Ambari Web Hosts page to manage multiple Hortonworks Data Platform (HDP) components, such as DataNodes, NameNodes, NodeManagers, and RegionServers, running on hosts throughout your cluster. For example, you can restart all DataNode components, optionally controlling that task with rolling restarts. Ambari Hosts enables you to filter your selection of host components to manage, based on operating status, host health, and defined host groupings.

The Hosts tab enables you to perform the following tasks: