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From "Srimanth Gunturi (JIRA)" <>
Subject [jira] [Updated] (AMBARI-3531) Provide configuration host overrides capability in Ambari
Date Wed, 16 Oct 2013 23:57:42 GMT


Srimanth Gunturi updated AMBARI-3531:

    Assignee: Siddharth Wagle  (was: Srimanth Gunturi)

As a solution we are proposing the concept of service-level {{Configuration-Group}}s. 

A {{configuration-group}} associates service-level configuration overrides for a group of
hosts. In a service, a host can belong to only 1 {{configuration-group}}. This should provide
a scalable implementation capable of solving each of the usecases mentioned.

> Provide configuration host overrides capability in Ambari
> ---------------------------------------------------------
>                 Key: AMBARI-3531
>                 URL:
>             Project: Ambari
>          Issue Type: New Feature
>          Components: controller
>    Affects Versions: 1.4.1
>            Reporter: Srimanth Gunturi
>            Assignee: Siddharth Wagle
>             Fix For: 1.4.2
> Ambari currently provides cluster level service configurations. 
> This is a problem when the cluster has a mix of different hardwares requiring different
configurations for a group of hosts of a service. For example, some DataNodes having bigger
disks might need extra mount points in {{dfs_datanode_data_dir}}.  
> Ambari needs to provide configuration override capability for a group of hosts per service.

> The primary use cases from UI perspective are the ability to
> # Override 3 properties for 500 hosts
> # Go to host and see effective configurations
> # Save configuration without restarting
> # Indicate which services/components need restarting

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