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Introduction

Ambari supports the concept of Stacks and associated Services. Using Stack definition, Ambari has a consistent and defined interface to install, manage and monitor a set of Services and provides extensibility model for new Stacks + Services to be introduced.

Terminology

Stack = defines a set of Services and where to obtain the software packages for those Services. A Stack can have one or more version, and each version can be active/inactive. For example, Stack = "HDP-1.3.3".

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Components = defines and adhere to a certain defined lifecycle (start, stop, install, etc). For example, Service = "HDFS" has Components = "NameNode (MASTER)", "Secondary NameNode (MASTER)", "DataNode (SLAVE)" and "HDFS Client (CLIENT)"

In Practice

In Ambari 1.4.x or earlier, refer to Overview (Ambari 1.4.x or earlier) for more information

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