Question-21: What do you mean by a resource in Ambari?

Answer: All the resources which are available in the Ambari and can also be managed in Ambari.

Question-22: How many types of resources possible in Ambari as of now?

Answer: As of now Ambari supports two types of resources as below

• Cluster: Entire Hadoop cluster.
• View: It is an user interface for Ambari.

Its admin who gives the permission on the resources to user or groups.

Question-23: what is the default port of Ambari web UI?

Answer: The default port is 8080/

Question-24: Can I register my existing cluster with the Ambari?

Answer: Yes, if you already have setup of HDP cluster, then you can register that with the Ambari. Using Ambari you can create a new cluster, register an existing cluster, can deploy the views and finally you can manage the users and groups.

Question-25: What do you mean by Ambari blueprint?

Answer: You can use the Ambari blueprint, which provides an API to perform cluster installations. Using blueprint, we can define which stack to use, and services and components required. Also, the specific configuration to the cluster.

Blueprint = Stack Definition + Required Components

And using this blueprint you can instantiate a new Hadoop cluster with the same configuration. Its more like a template, create once and then use it to create multiple cluster with the same configurations and components. This is the example of re-usability to automate the deployment of cluster.