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1. From the terminal window on the VM where you want to run the main Ambari service, download the Ambari repository. The following commands download Ambari version 2.4.1.0 and install ambari-server. To install a different version of Ambari, specify the appropriate repo URL. Choose the appropriate commands for the operating system on your VMs:

   OS	Commands
   CentOS 6	wget -nv http://public-repo-1.hortonworks.com/ambari/centos6/2.x/updates/2.4.1.0/ambari.repo -O /etc/yum.repos.d/ambari.repo  yum install ambari-server -y
   CentOS 7	wget -nv http://public-repo-1.hortonworks.com/ambari/centos7/2.x/updates/2.4.1.0/ambari.repo -O /etc/yum.repos.d/ambari.repo yum install ambari-server -y
   Ubuntu 12	wget -nv http://public-repo-1.hortonworks.com/ambari/ubuntu12/2.x/updates/2.4.1.0/ambari.list -O /etc/apt/sources.list.d/ambari.list apt-key adv --recv-keys --keyserver keyserver.ubuntu.com B9733A7A07513CAD apt-get update apt-get install ambari-server -y
   Ubuntu 14	wget -nv http://public-repo-1.hortonworks.com/ambari/ubuntu14/2.x/updates/2.4.1.0/ambari.list -O /etc/apt/sources.list.d/ambari.list apt-key adv --recv-keys --keyserver keyserver.ubuntu.com B9733A7A07513CAD apt-get update apt-get install ambari-server -y

2. To install Ambari with default settings, set up and start ambari-server:

   Code Block
   ambari-server setup -s ambari-server start

   For more information about installation options and settings, see Apache Ambari Installation.

3. After Ambari Server has started, access the Ambari Web UI at http://<hostname>.ambari.apache.org:8080. For example:

   Code Block
   http://c7001.ambari.apache.org:8080

   The URL depends on the OS and the node where you installed Ambari. 
   Note: The Ambari Server can take some time to launch and be ready to accept connections. Keep trying the URL until you see the login page.
   
   

4. Login using default username admin, password admin.
   
   

5. Choose "Launch Install Wizard."
   
   

6. Specify a name for your cluster.
   
   

7. On the Install Options page, list the FQDNs of the virtual machines. For example:

   Code Block
   c7001.ambari.apache.org c7002.ambari.apache.org c7003.ambari.apache.org

   Alternatively, you can use a range expression:

   Code Block
   c70[01-03].ambari.apache.org

8. Upload the insecure_private_key file that you created earlier.
   
   

9. Specify non-root SSH user vagrant.
   
   

10. Continue stepping through on-screen Installation Wizard, completing onscreen instructions to install your cluster.

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