1. Log in to your host as root.
2. Download the Ambari repository file to a directory on your installation host.

   wget -nv http://public-repo-1.hortonworks.com/ambari/centos6/2.x/updates/2.4.2.0/ambari.repo -O /etc/yum.repos.d/ambari.repo

   	Important
   	Do not modify the ambari.repo file name. This file is expected to be available on the Ambari Server host during Agent registration.

3. Confirm that the repository is configured by checking the repo list.

   yum repolist

   You should see values similar to the following for Ambari repositories in the list.

   Version values vary, depending on the installation.

   repo id	repo name	status
   AMBARI.2.2.0.0-2.x	Ambari 2.x	5
   base	CentOS-6 – Base	6,518
   extras	CentOS-6 – Extras	15
   updates	CentOS-6 – Updates	209

4. Install the Ambari bits. This also installs the default PostgreSQL Ambari database.

   yum install ambari-server

5. Enter y when prompted to to confirm transaction and dependency checks.A successful installation displays output similar to the following:

   Installing : postgresql-libs-8.4.20-3.el6_6.x86_64         1/4
   Installing : postgresql-8.4.20-3.el6_6.x86_64              2/4
   Installing : postgresql-server-8.4.20-3.el6_6.x86_64       3/4
   Installing : ambari-server-2.2.0.0-1470.x86_64               4/4
   Verifying  : ambari-server-2.2.0.0-1470.x86_64               1/4
   Verifying  : postgresql-8.4.20-3.el6_6.x86_64              2/4
   Verifying  : postgresql-server-8.4.20-3.el6_6.x86_64       3/4
   Verifying  : postgresql-libs-8.4.20-3.el6_6.x86_64         4/4
   
   Installed:
     ambari-server.x86_64 0:2.2.0.0-1470
   
   Dependency Installed:
    postgresql.x86_64 0:8.4.20-3.el6_6           
    postgresql-libs.x86_64 0:8.4.20-3.el6_6        
    postgresql-server.x86_64 0:8.4.20-3.el6_6

   Complete!

   	Note
   	Accept the warning about trusting the Hortonworks GPG Key. That key will be automatically downloaded and used to validate packages from Hortonworks. You will see the following message: Importing GPG key 0x07513CAD: Userid: "Jenkins (HDP Builds) <jenkin@hortonworks.com>" From : http://s3.amazonaws.com/dev.hortonworks.com/ambari/centos6/RPM-GPG-KEY/RPM-GPG-KEY-Jenkins

1. If you have not temporarily disabled SELinux, you may get a warning. Accept the default (y), and continue.
2. By default, Ambari Server runs under root. Accept the default (n) at the Customize user account for ambari-server daemon prompt, to proceed as root. If you want to create a different user to run the Ambari Server, or to assign a previously created user, select y at the Customize user account for ambari-server daemon prompt, then provide a user name. Refer to the Ambari Security Guide > Configuring Ambari for Non-Root, for more information about running the Ambari Server as non-root.
3. If you have not temporarily disabled iptables you may get a warning. Enter y to continue.
4. Select a JDK version to download. Enter 1 to download Oracle JDK 1.8.

   Note

   JDK support depends entirely on your choice of HDP Stack versions. Please refer to the Ambari Reference Guideto see which JDK versions are supported by the HDP Stack version you intend to install. By default, Ambari Server setup downloads and installs Oracle JDK 1.8 and the accompanying Java Cryptography Extension (JCE) Policy Files. If you plan to use a different version of the JDK, see Setup Options for more information.

5. Accept the Oracle JDK license when prompted. You must accept this license to download the necessary JDK from Oracle. The JDK is installed during the deploy phase.
6. Select n at Enter advanced database configuration to use the default, embedded PostgreSQL database for Ambari. The default PostgreSQL database name is ambari. The default user name and password are ambari/bigdata. Otherwise, to use an existing PostgreSQL, MySQL or Oracle database with Ambari, select y.
   • If you are using an existing PostgreSQL, MySQL, or Oracle database instance, use one of the following prompts:

     	Important
     	You must prepare a non-default database instance, using the steps detailed in Using Non-Default Databases-Ambari, before running setup and entering advanced database configuration.

     	Important
     	Using the Microsoft SQL Server or SQL Anywhere database options are not supported.

   • To use an existing Oracle instance, and select your own database name, user name, and password for that database, enter 2.Select the database you want to use and provide any information requested at the prompts, including host name, port, Service Name or SID, user name, and password.
   • To use an existing MySQL database, and select your own database name, user name, and password for that database, enter 3.Select the database you want to use and provide any information requested at the prompts, including host name, port, database name, user name, and password.
   • To use an existing PostgreSQL database, and select your own database name, user name, and password for that database, enter 4.Select the database you want to use and provide any information requested at the prompts, including host name, port, database name, user name, and password.
7. At Proceed with configuring remote database connection properties [y/n] choose y.
8. Setup completes.

   	Note
   	If your host accesses the Internet through a proxy server, you must configure Ambari Server to use this proxy server. See How to Set Up an Internet Proxy Server for Ambari for more information.

	Note
	If you plan to use an existing database instance for Hive or for Oozie, you must complete the preparations described inUsing Non-Default Databases-Hive and Using Non-Default Databases-Ooziebefore installing your Hadoop cluster.

Next Steps

Install, configure and deploy an HDP cluster