Mange one or multiple hosts in your cluster from the Hosts
page in Ambari Web.
As a cluster administrator or cluster operator, you need
to react when the operating status of a hostind indicates issues that require action.
You can use the Ambari Web
Hosts page to manage multiple 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 host health based on operating status and defined host groupings.
The Hosts tab enables you to perform the following
tasks:
