APACHE AMBARI INTERVIEW QUESTIONS

Most Important Frequently Asked Apache Ambari Interview Questions

1. Question 1. What Are The Three Layers Where The Hadoop Components Are Actually Supported By Ambari?

   Answer :

   The three layers that are supported by Ambari are below:

   1. Core Hadoop
   2. Essential Hadoop
   3. Hadoop Support

2. Question 2. What Is Apache Ambari?

   Answer :

   The Apache Ambari is nothing but a project which is solely focused to make life simple while using Hadoop management system.

   This software helps or provides comfort zone in terms of the following aspect:

   1. Provisioning
   2. Managing
   3. Monitoring Hadoop clusters
   4. Provides intuitive interface
   5. It is backed up RESTful API’s.
   6. Provides an easy to use Hadoop management web UI

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3. Question 3. What Are The Areas Where Ambari Helps The System Administrators To Do?

   Answer :

   With the help of Ambari, system administrators will be able to do the following easily, they are:

   1. Provision of Hadoop Cluster
   2. Manage a Hadoop cluster
   3. Monitor a Hadoop Cluster

4. Question 4. What Bit Version That Ambari Needs And Also List Out The Operating Systems That Are Compatible?

   Answer :

   The Apache Ambari is compatible with 64-bit version and the following are the operating systems that go well with Ambari implementation:

   1. Debian 7
   2. Ubuntu 12 and 14
   3. SLES (Suse Linux Enterprise Server) 11
   4. OEL (Oracle Enterprise Linux 6) and 7
   5. CentOS 6 and 7
   6. RHEL ( Redhat Enterprise Linux) 6 and 7

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5. Question 5. What Is The Latest Version Of Ambari That Is Available In The Market And What Is The Feature That They Have Added In It?

   Answer :

   The latest version of Ambari that is available in the market is Ambari 2.5.2. Within, this version they have added a feature called: Cross stack upgrade support.

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6. Question 6. What Is Repository?

   Answer :

   A repository is nothing but space where it hosts the software packages which can be used for download and plus install.

7. Question 7. What Is Yum?

   Answer :

   The Yum is nothing but a package manager which actually fetches the software packages from the repository.

   On RHEL/CentOS, typically “yum”,

   ON SLES, typically “Zipper”.

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8. Question 8. What Is A Local Repository And When It Is Useful While Using Ambari Environment?

   Answer :

   A local repository is nothing but a hosted space in the local environment. Usually, when the machines don't have an active internet connection or have restricted or very limited network access a local repository should be set up. With this setup, the user will be able to obtain Ambari and HDP software packages.

9. Question 9. How Many Types Of Ambari Repositories Are Available?

   Answer :

   The types of Ambari Repositories are listed below:

   1. Ambari: This is for Ambari server, Ambari agent and other monitoring software packages
   2. HDP: This is used to host Hadoop Stack packages
   3. HDP-UTILS: All the utility packages for Ambari and HDP are available
   4. EPEL: It stands for “Extra Packages for Enterprise Linux. It has a set of additional packages for the Enterprise Linux

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10. Question 10. What Are The Different Methods To Set Up Local Repositories?

    Answer :

    There are two ways to deploy the local repositories. It actually depends on your active Internet connection and based on that we can execute it.

    1. First of all mirror the packages to the local repository
    2. If the first method doesn’t work out good for you then download all the Repository Tarball and start building the Local repository

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11. Question 11. How To Set Up Local Repository Manually?

    Answer :

    This process is only used when there is no active internet connection is not available.

    So to set up a local repository, please follow the below steps:

    1. First and foremost, set up a host with Apache httpd
    2. Next is to download Tarball copy for every repository entire contents
    3. Once it is downloaded, one has to extract the contents

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12. Question 12. What Are The Tools That Are Needed To Build Ambari?

    Answer :

    The following tools are needed to build Ambari:

    1. If you are using Mac then you have to download Xcode from the apple store.
    2. JDK 7
    3. Apache Maven 3.3.9 or later
    4. Python 2.6 or later
    5. Node JS
    6. G++

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13. Question 13. What Are The Independent Extensions That Are Contributed To The Ambari Codebase?

    Answer :

    The independent extensions that are contributed to the Ambari Codebase are as follows:

    1. Ambari SCOM Management Pack
    2. Apache Slider View

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14. Question 14. Is Ambari Python Client Can Be Used To Make Good Use Of Ambari Api’s?

    Answer :

    Yes, Ambari Python client can be used to make good use of Ambari API’s.

15. Question 15. What Is The Process Of Creating Ambari Client?

    Answer :

    The following code will do help you to create an Ambari client:

    from ambari_client.ambari_api import  AmbariClient

    headers_dict={'X-Requested-By':'mycompany'} #Ambari needs X-Requested-By header

    client = AmbariClient("localhost", 8080, "admin", "admin", version=1,http_header=headers_dict)

    print client.version

    print client.host_url

    print"n"

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16. Question 16. How Can We See All The Clusters That Are Available In Ambari?

    Answer :

    all_clusters = client.get_all_clusters()

    print all_clusters.to_json_dict()

    print all_clusters

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17. Question 17. How Can We See All The Hosts That Are Available In Ambari?

    Answer :

    all_hosts = client.get_all_hosts()

    print all_hosts

    print all_hosts.to_json_dict()

    print"n"

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18. Question 18. What Does Ambari Shell Can Provide?

    Answer :

    The Ambari shell can provide an interactive and handy command line tool which actually supports the following:

    1. All the available functionality in Ambari Web-app
    2. All the context-aware command availability
    3. Tab completion
    4. Any required parameter support if needed

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19. Question 19. What Are The Core Benefits For Hadoop Users By Using Apache Ambari?

    Answer :

    The Apache Ambari is a great gift for individuals who use Hadoop in their day to day work life.

    With the use of Ambari, Hadoop users will get the core benefits:

    1. Installation process is simplified
    2. Configuration and overall management is simplified
    3. It has a centralized security setup process
    4. It gives out full visibility in terms of Cluster health
    5. It is extensively extendable and has an option to customize if needed.

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20. Question 20. What Are The Different Life Cycle Commands In Ambari?

    Answer :

    The Ambari has a defined life cycle commands and they are as follows:

    1. Start
    2. Stop
    3. Status
    4. Install
    5. Configure

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21. Question 21. What Are The Tools That Are Used In Ambari Monitoring?

    Answer :

    Ambari Monitoring tools actually use two different open source projects for its monitoring purposes,

    they are as follows:

    1. Ganglia
    2. Nagios

22. Question 22. What Is Ganglia Is Used For In Ambari?

    Answer :

    It is one of the tools that is used in Ambari, it is mainly used for the following purpose:

    1. Monitoring
    2. Identifying trending patterns
    3. Metrics collection in the clusters
    4. It also supports detailed heatmaps

Topic: Apache Ambari Interview Questions