{"id":66629,"date":"2018-06-26T11:07:58","date_gmt":"2018-06-26T11:07:58","guid":{"rendered":"https:\/\/www.whizlabs.com\/blog\/?p=66629"},"modified":"2018-06-26T11:07:58","modified_gmt":"2018-06-26T11:07:58","slug":"apache-ambari-interview-questions","status":"publish","type":"post","link":"https:\/\/www.whizlabs.com\/blog\/apache-ambari-interview-questions\/","title":{"rendered":"Top 25 Apache Ambari Interview Questions and Answers"},"content":{"rendered":"<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Apache Ambari is an open source platform which supports and complements Hadoop for provisioning and managing Hadoop clusters. As per the market survey, Ambari has taken a market share of about 49.30%. Hence from Hadoop administration perspective, it is essential to <a href=\"https:\/\/www.whizlabs.com\/blog\/learn-apache-ambari\/\" target=\"_blank\" rel=\"noopener\">learn Apache Ambari<\/a>. Thus if you are preparing for your next Hadoop job interview as a Hadoop administrator make yourself ready to face Apache Ambari Interview Questions.<\/span><\/p>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Not to mention, the complexity of interview questions on Apache Ambari depends on the roles and responsibilities of the position you have applied. Hence in this blog, we will discuss on some of the best Apache Ambari interview questions based on the complexity levels that we believe will help you in your preparation.<\/span><\/p>\n<h2 class=\"p5\" style=\"text-align: justify;\"><span class=\"s1\"><b>Some Common Apache Ambari Interview Questions and Answers<\/b><\/span><\/h2>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">The following questions and answers of Apache Ambari are based on the basic concepts of Ambari and applicable for all roles.<\/span><\/p>\n<h4 class=\"p6\" style=\"text-align: justify;\"><strong><span class=\"s1\">1. Explain Apache Ambari with its key features.<\/span><\/strong><\/h4>\n<p class=\"p7\" style=\"text-align: justify;\"><span class=\"s1\">Answer: The Apache Ambari is an Apache product designed and developed with a target to simplify Hadoop projects with easy management. Ambari helps to manage Hadoop project concerning\u00a0<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li7\"><span class=\"s1\">Easy provisioning<\/span><\/li>\n<li class=\"li7\"><span class=\"s1\">Convenient project management<\/span><\/li>\n<li class=\"li7\"><span class=\"s1\">Hadoop cluster monitoring<\/span><\/li>\n<li class=\"li7\"><span class=\"s1\">Availability of intuitive interface<\/span><\/li>\n<li class=\"li7\"><span class=\"s1\">Support for RESTful API<\/span><\/li>\n<li class=\"li7\"><span class=\"s1\">Hadoop management web UI<\/span><\/li>\n<\/ul>\n<h4 class=\"p9\" style=\"text-align: justify;\"><strong><span class=\"s1\">2. Why should you use Apache Ambari as a Hadoop user or system administrator?<\/span><\/strong><\/h4>\n<p class=\"p7\" style=\"text-align: justify;\"><span class=\"s1\">Answer: There are multiple benefits that a Hadoop user can achieve by using Apache Ambari.<\/span><\/p>\n<p class=\"p7\" style=\"text-align: justify;\"><span class=\"s1\">Using Ambari a system administrator can \u2013<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li7\"><span class=\"s1\">Install Hadoop across any number of hosts using a step-step wizard provided by Ambari while the Ambari handles the configuration for Hadoop installation.<\/span><\/li>\n<li class=\"li7\"><span class=\"s1\">Centrally manage the Hadoop services across the cluster using Ambari.<\/span><\/li>\n<li class=\"li7\"><span class=\"s1\">Efficiently monitor the status and health of Hadoop cluster leveraging the Ambari metrics system. Additionally, the Ambari alert framework provides the timely notification regarding any system issues like disk space issue or a node running status.<\/span><\/li>\n<li class=\"li7\"><span class=\"s1\">Integrate the functionalities mentioned above in an application using Ambari RESTful APIs.<\/span><\/li>\n<\/ul>\n<h4 class=\"p9\" style=\"text-align: justify;\"><strong><span class=\"s1\">3. What are the operating systems supported by Apache Ambari?<\/span><\/strong><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Answer: Apache Ambari<b> <\/b>supports the 64-bit version of the following Operating Systems:<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">CentOS 6 and 7<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">RHEL (Redhat Enterprise Linux) 6 and 7<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">SLES (SuSE Linux Enterprise Server) 11<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Ubuntu 12 and 14<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">OEL (Oracle Enterprise Linux) 6 and 7<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Debian 7<\/span><\/li>\n<\/ul>\n<blockquote>\n<p style=\"text-align: justify;\">Also Read:\u00a0<a href=\"https:\/\/www.whizlabs.com\/blog\/learning-hadoop-for-beginners\/\" target=\"_blank\" rel=\"noopener follow\" data-wpel-link=\"internal\">The best way to learn Hadoop for Beginners\u00a0<\/a><\/p>\n<\/blockquote>\n<h4 class=\"p11\" style=\"text-align: justify;\"><span class=\"s1\"><b>4. Can you explain Apache Ambari architecture?<\/b><\/span><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Answer: Apache Ambari consists of following major components-<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">Ambari Server <\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Ambari Agent<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Ambari Web<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_66630\" aria-describedby=\"caption-attachment-66630\" style=\"width: 585px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-66630 size-full\" src=\"https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/sites\/2\/2018\/06\/apache-ambari-architecture.jpg\" alt=\"Apache Ambari Architecture\" width=\"585\" height=\"485\" srcset=\"https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2018\/06\/apache-ambari-architecture.jpg 585w, https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2018\/06\/apache-ambari-architecture-300x249.jpg 300w, https:\/\/www.whizlabs.com\/blog\/wp-content\/uploads\/2018\/06\/apache-ambari-architecture-507x420.jpg 507w\" sizes=\"(max-width: 585px) 100vw, 585px\" \/><figcaption id=\"caption-attachment-66630\" class=\"wp-caption-text\">Image Source: https:\/\/issues.apache.org\/jira\/secure\/attachment\/12559939\/Ambari_Architecture.pdf<\/figcaption><\/figure>\n<p><span class=\"s1\"><b><i>Ambari server<\/i><\/b> handles all the metadata, and it consists of an <\/span><span class=\"s4\">instance of Postgres <\/span><span class=\"s1\">database as shown in the figure. Each host in the cluster contains one copy of the Ambari agent through which Ambari server controls each host. <\/span><\/p>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\"><em><strong>An\u00a0<\/strong><\/em><i style=\"font-weight: bold;\">Ambari agent<\/i> is an active member of the host which sends heartbeats from the nodes to the Ambari server along with multiple operational metrics to decide the health status of the nodes.<\/span><\/p>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\"><b><i>Ambari Web UI<\/i><\/b> is a client-side JavaScript application which periodically accesses the Ambari RESTful API to perform cluster operations. Moreover, it helps in asynchronous communication between the application and the server using the RESTful API.<\/span><\/p>\n<h4 class=\"p9\" style=\"text-align: justify;\"><span class=\"s1\"><b>5. How many layers of Hadoop components are supported by Apache Ambari and what are they?<\/b><\/span><\/h4>\n<p class=\"p7\" style=\"text-align: justify;\"><span class=\"s1\">Answer: There are three layers of Hadoop components which are supported by Apache Ambari, and these are as follows:<\/span><\/p>\n<p class=\"p7\" style=\"text-align: justify;\"><b>1. Hadoop core components<\/b><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li7\"><span class=\"s1\">Hadoop Distributed File System (HDFS)<\/span><\/li>\n<li class=\"li7\"><span class=\"s1\">MapReduce<\/span><b><\/b><\/li>\n<\/ul>\n<p><span class=\"s1\"><b>2. Essential Hadoop components<\/b><\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">Apache Pig<b> <\/b><\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Apache Hive<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Apache HCatalog<b> <\/b><\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">WebHCat<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Apache HBase<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Apache ZooKeeper<\/span><\/li>\n<\/ul>\n<p><b><\/b><span class=\"s1\"><b>3. Components of Hadoop support<\/b><\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">Apache Oozie<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Apache Sqoop<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Ganglia<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Nagios<\/span><\/li>\n<\/ul>\n<blockquote>\n<p style=\"text-align: justify;\">Prepare well for your Hadoop Admin Interview. Go through these top 50 <a href=\"https:\/\/www.whizlabs.com\/blog\/top-50-hadoop-interview-questions\/\" target=\"_blank\" rel=\"noopener\">Hadoop Interview Questions<\/a> and Answers!<\/p>\n<\/blockquote>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>6. What is a repository in Apache Ambari?<\/b><\/span><\/h4>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Answer: A repository is a hosted space for Ambari software packages for downloading and installing purposes. Apache provides different versions of repositories which are OS specific. Moreover, based on internet accessibility, you can access either of the two formats of repositories:<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li3\"><span class=\"s1\">Tarball (.tar format, if you don&#8217;t have internet access) <\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Repo file(.repo format for temporary internet access)<\/span><\/li>\n<\/ul>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>7. What are the different types of Ambari repositories?<\/b><\/span><\/h4>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Answer: There are mainly four types of Ambari Repositories as listed below &#8211;<\/span><\/p>\n<ol class=\"ol1\" style=\"text-align: justify;\">\n<li class=\"li3\"><span class=\"s1\"><b>Ambari:<\/b> This repository is used for Ambari server, the monitoring software packages, and Ambari agent.<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\"><b>HDP-UTILS:<\/b> This repository is used for Ambari and HDP utility packages <\/span><\/li>\n<li class=\"li3\"><span class=\"s1\"><b>HDP:<\/b> The repository to host Hadoop Stack packages<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\"><b>Extra Packages for Enterprise Linux<\/b>(<b> EPEL):<\/b> The repository with an additional set of packages for the Enterprise Linux<\/span><\/li>\n<\/ol>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>8. What is a local repository and when will you use it?<\/b><\/span><\/h4>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Answer: A local repository is a hosted space in the local environment for Ambari software packages. This is mainly used when the enterprise clusters have no or limited outbound Internet access.<\/span><\/p>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>9. What are the benefits of setting up a local repository?<\/b><\/span><\/h4>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Answer: First and foremost by setting up a local repository, you can access Ambari software packages without internet access.<\/span><span class=\"s4\"> Along with that, you can achieve benefits like \u2013<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li3\"><span class=\"s1\">Enhanced governance with better installation performance<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Routine post-installation cluster operations like service start and restart operations<\/span><\/li>\n<\/ul>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>10. Explain different life cycle commands in Ambari.\u00a0<\/b><\/span><\/h4>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Answer: Apache Ambari has a defined set of life cycle commands to add, remove or reconfigure any of the services and these are \u2013<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li3\"><span class=\"s1\">Start<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Stop<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Install<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Configure<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Status<\/span><\/li>\n<\/ul>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>11. What are the tools you need to build Ambari?<\/b><\/span><\/h4>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Answer: Following tools are required to build Ambari &#8211;<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li3\"><span class=\"s1\">JDK 7<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Apache Maven 3.3.9 or later<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Python 2.6 or later<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Node JS<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">G++<\/span><\/li>\n<li class=\"li3\"><span class=\"s1\">Xcode in case of Mac<\/span><\/li>\n<\/ul>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>12. What are the different tools used for Ambari monitoring purpose?<\/b><\/span><\/h4>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Answer: There are two open source monitoring tools in Ambari \u2013<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">Ganglia<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Nagios<\/span><\/li>\n<\/ul>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>13. What are the particular functionalities of Ganglia in Ambari?<\/b><\/span><\/h4>\n<p>Answer: The functionalities of Ganglia in Ambari are &#8211;<\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">Monitoring the cluster<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Identify trending patterns<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Collect the metrics in the clusters<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">To support detailed heatmaps<\/span><\/li>\n<\/ul>\n<h4 class=\"p11\" style=\"text-align: justify;\"><span class=\"s1\"><b>14. What are the particular functionalities of Nagios<\/b> <b>in Ambari?<\/b><\/span><\/h4>\n<p>Answer: The functionalities of Nagios in Ambari are &#8211;<\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">Health checking of the nodes and sending alerts <\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">To send alert emails as any of the notifications type or service type.<\/span><\/li>\n<\/ul>\n<blockquote>\n<p style=\"text-align: justify;\">New in the world of Big Data? Here is everything you should know to start\u00a0\u00a0<a href=\"https:\/\/www.whizlabs.com\/blog\/big-data-career\/\" target=\"_blank\" rel=\"noopener follow\" data-wpel-link=\"internal\">Big Data Career<\/a>\u00a0as a fresher?<\/p>\n<\/blockquote>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>15. Explain some of the basic commands used for Apache Ambari server?<\/b><\/span><\/h4>\n<p>Answer: Following commands are used for Apache Ambari server &#8211;<\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li3\"><span class=\"s1\">To start the Ambari Server:<\/span><\/li>\n<\/ul>\n<p class=\"p14\" style=\"text-align: justify;\"><span class=\"s1\"><i>ambari-server start<\/i><\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li3\"><span class=\"s1\">To check the Ambari Server processes:<\/span><\/li>\n<\/ul>\n<p class=\"p14\" style=\"text-align: justify;\"><span class=\"s1\"><i>ps -ef | grep Ambari<\/i><\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li3\"><span class=\"s1\">To stop the Ambari Server:<\/span><\/li>\n<\/ul>\n<p class=\"p14\" style=\"text-align: justify;\"><span class=\"s1\"><i>ambari-server stop<\/i><\/span><\/p>\n<h2 class=\"p16\" style=\"text-align: justify;\"><span class=\"s1\"><b>Advanced Apache Ambari Interview Questions<\/b><\/span><\/h2>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>16. What is the latest release of Apache Ambari?<\/b><\/span><\/h4>\n<p class=\"p3\" style=\"text-align: justify;\"><span class=\"s1\">Answer: The latest release is of Ambari is 2.6.2<\/span><\/p>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>17. What are the new additions in Ambari 2.6 versions?<\/b><\/span><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Answer: Ambari 2.6.2 added the following features: <\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">It will protect Zeppelin Notebook SSL credentials<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">We can set appropriate HTTP headers to use Cloud Object Stores with HDP<\/span><\/li>\n<\/ul>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Ambari 2.6.1 added the following feature: <\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">Conditional Installation of<span class=\"Apple-converted-space\">\u00a0 <\/span>LZO packages through Ambari <\/span><\/li>\n<\/ul>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Ambari 2.6.0 added the following features: <\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">Distributed mode of Ambari Metrics System&#8217;s (AMS) along with multiple Collectors <\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Host Recovery improvements for the restart<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\"> moving masters with minimum impact and scale testing <\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">Improvement in Data Archival &amp; Purging in Ambari Infra <\/span><\/li>\n<\/ul>\n<h4 class=\"p11\" style=\"text-align: justify;\"><span class=\"s1\"><b>18. What all tasks you can perform for managing host using Ambari host tab?<\/b><\/span><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Answer: Using <b>Hosts<\/b> tab, we can perform the following tasks: <\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Analysing Host Status<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Searching the Hosts Page<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Performing Host related Actions<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Managing Host Components<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Decommissioning a Master node or Slave<\/span><\/span><span class=\"s1\"> node<\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Deleting a Component<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Setting up Maintenance Mode<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Adding or removing Hosts to a Cluster<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Establishing Rack Awareness<\/span><\/span><\/li>\n<\/ul>\n<h4 class=\"p11\" style=\"text-align: justify;\"><span class=\"s1\"><b>19. What all tasks you can perform for managing services using Ambari service tab?<\/b><\/span><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Answer: Using <b>Services <\/b>tab, we can perform the following tasks:<\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Start and Stop of All Services<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Display of Service Operating Summary<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Adding a Service<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Configuration Settings<\/span><\/span><span class=\"s1\"> change<\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Performing Service Actions<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Rolling Restarts<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Background Operations<\/span><\/span><span class=\"s1\"> monitoring<\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Service<\/span><\/span><span class=\"s1\"> removal<\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Audit<\/span><\/span><span class=\"s1\">ing operations<\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Using Quick Links<\/span><\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">YARN Capacity Scheduler<\/span><\/span><span class=\"s1\"> refresh<\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">HDFS<\/span><\/span><span class=\"s1\"> management<\/span><\/li>\n<li class=\"li4\"><span class=\"s3\"><span class=\"s6\">Atlas management in a Storm Environment<\/span><\/span><\/li>\n<\/ul>\n<h4 class=\"p11\" style=\"text-align: justify;\"><span class=\"s1\"><b>20. Can Ambari manage multiple clusters?<\/b><\/span><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Answer: No, as of now Ambari can manage only one cluster. However, we can remotely view the &#8220;views&#8221; of other clusters in the same instance. <\/span><\/p>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>21. What are the different ways you can use to secure a cluster using Ambari?<\/b><\/span><\/h4>\n<p>Answer: Following are the ways that can be used to secure a cluster using Ambari &#8211;<\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li4\"><span class=\"s1\">For network security, we can enable Kerberos authentication from Ambari <\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">By installing Ranger and configuring primary authorization from Ambari<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">We can configure Ambari to use Knox SSO<\/span><\/li>\n<li class=\"li4\"><span class=\"s1\">We can setup SSL for Ambari<\/span><\/li>\n<\/ul>\n<h4 class=\"p11\" style=\"text-align: justify;\"><span class=\"s1\"><b>22. What is Ambari shell and what are the purposes of using it?<\/b><\/span><\/h4>\n<p class=\"p17\" style=\"text-align: justify;\"><span class=\"s1\">Answer: It is a Java based command line tool that uses Groovy based Ambari REST client, and the Spring Shell framework to execute commands. The shell supports <\/span><\/p>\n<ul class=\"ul1\" style=\"text-align: justify;\">\n<li class=\"li17\"><span class=\"s1\">The functionalities available through Ambari web-app\u00a0<\/span><\/li>\n<li class=\"li17\"><span class=\"s1\">context-aware availability of commands <\/span><\/li>\n<li class=\"li17\"><span class=\"s1\">completion of tab<\/span><\/li>\n<li class=\"li17\"><span class=\"s1\">optional and required parameter support<\/span><\/li>\n<\/ul>\n<h4 class=\"p11\" style=\"text-align: justify;\"><span class=\"s1\"><b>23. What is the required action you need to perform if you opt for scheduled maintenance on the cluster nodes?<\/b><\/span><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Answer: Ambari provides Maintenance mode option for all the nodes in the cluster. Hence before performing maintenance, we can enable the Maintenance mode of Ambari to avoid alerts.<\/span><\/p>\n<blockquote>\n<p style=\"text-align: justify;\">It is important to learn Apache Ambari for a Hadoop Administrator. Let\u2019s have a look on the\u00a0<a href=\"https:\/\/www.whizlabs.com\/blog\/hadoop-administrator-responsibilities\/\" target=\"_blank\" rel=\"noopener follow\" data-wpel-link=\"internal\">Hadoop Administrator Job Responsibilities<\/a>!<\/p>\n<\/blockquote>\n<h4 class=\"p11\" style=\"text-align: justify;\"><span class=\"s1\"><b>24. What is the role of \u201cambari-qa\u201d user?<\/b><\/span><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Answer: &#8216;ambari-qa&#8217; is a user account which is created by Ambari on all nodes in the cluster. As part of the installation process, this user performs a service check against cluster services.<\/span><\/p>\n<h4 class=\"p6\" style=\"text-align: justify;\"><span class=\"s1\"><b>25. Why do you think Apache Ambari would have a promising future?<\/b><\/span><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Answer: With the increasing demand for big data technologies like Hadoop, we have seen the massive usage of data analysis which brings huge clusters in place. For better management of these clusters with enhanced operational efficiency and more visibility companies are leaning towards the technologies like Apache Ambari. Moreover, we have noticed how technology giant HortonWorks is working on Ambari to make it more scalable. Hence, gaining knowledge of Hadoop along with the technology like Apache Ambari is an added advantage.<\/span><\/p>\n<h4 class=\"p21\" style=\"text-align: justify;\"><span class=\"s1\"><b>Bottom Line<\/b><\/span><\/h4>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">We have discussed most of the frequently asked and the top Apache Ambari interview questions above. However, the more you understand and practice a technology, more queries will pop up in your mind. Hence, it is always advisable to master yourself on the subject matter. <\/span><\/p>\n<p class=\"p4\" style=\"text-align: justify;\"><span class=\"s1\">Learning on a certification path measures a lot while assessing one\u2019s expertise and performance. Considering this in mind we at Whizlabs has tailor-made our <a href=\"https:\/\/www.whizlabs.com\/hdpca-certification\/\" target=\"_blank\" rel=\"noopener\"><span class=\"s2\">HDP Certified Administrator (HDPCA) Certification<\/span><\/a> online course which gives you detailed-level concepts and hands-on provision on Apache Ambari installation and features.<\/span><\/p>\n<p><strong><em>Have any Apache Ambari related question in your mind? Ask us by putting a comment below and we&#8217;ll be happy to give an answer!<\/em><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Apache Ambari is an open source platform which supports and complements Hadoop for provisioning and managing Hadoop clusters. As per the market survey, Ambari has taken a market share of about 49.30%. Hence from Hadoop administration perspective, it is essential to learn Apache Ambari. Thus if you are preparing for your next Hadoop job interview as a Hadoop administrator make yourself ready to face Apache Ambari Interview Questions. Not to mention, the complexity of interview questions on Apache Ambari depends on the roles and responsibilities of the position you have applied. Hence in this blog, we will discuss on some [&hellip;]<\/p>\n","protected":false},"author":220,"featured_media":66671,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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Malhotra","author_link":"https:\/\/www.whizlabs.com\/blog\/author\/aditi\/"},"uagb_comment_info":0,"uagb_excerpt":"Apache Ambari is an open source platform which supports and complements Hadoop for provisioning and managing Hadoop clusters. As per the market survey, Ambari has taken a market share of about 49.30%. Hence from Hadoop administration perspective, it is essential to learn Apache Ambari. Thus if you are preparing for your next Hadoop job interview&hellip;","_links":{"self":[{"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/posts\/66629","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/users\/220"}],"replies":[{"embeddable":true,"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/comments?post=66629"}],"version-history":[{"count":0,"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/posts\/66629\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/media\/66671"}],"wp:attachment":[{"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/media?parent=66629"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/categories?post=66629"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.whizlabs.com\/blog\/wp-json\/wp\/v2\/tags?post=66629"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}