Introducing Ambari operations
Apache Ambari collects a wide range of information from cluster nodes and services and displays that information in an easy-to-use, centralized interface known as Ambari Web.
Hadoop is a large-scale, distributed data storage and processing infrastructure using clusters of commodity hosts networked together. Monitoring and managing such complex distributed systems is not simple. To help you manage the complexity, Ambari server, agent and infrastructure components provide you operating control of hosts in the cluster as well as administrative control of cluster access.
Ambari Web displays information such as service-specific summaries, graphs, and alerts. You create and manage your cluster using Ambari Web to perform basic operational tasks, such as starting and stopping services, adding hosts to your cluster, and updating service configurations. You also can use Ambari Web to perform administrative tasks for your cluster, such as enabling Kerberos security and performing Stack upgrades. Any user can view Ambari Web features. Users with administrator-level roles can access more options than those users with operator-level or view-only roles. For example, an Ambari administrator can manage cluster security, an operator user can monitor the cluster, but a view-only user can only access features to which an administrator grants required permissions.