To deploy your Hortonworks stack using Ambari, you need to prepare your deployment environment:

• Set Up Password-less SSH
• Set Up Service User Accounts
• Enable NTP on the Cluster and on the Browser Host
• Check DNS and NSCD
• Configuring iptables
• Disable SELinux and PackageKit and check the umask Value
• Download and set up database connectors
• Configuring a Database Instance for Ranger
• Install Databases for HDF services