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https://issues.apache.org/jira/browse/AMBARI-6275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15511355#comment-15511355
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Amruta Borkar commented on AMBARI-6275:
---------------------------------------

Hi [~jspeidel]  is the scenario specified in 'Specify an inlined hostgroup' [to 
scale a cluster using blueprint that was created using UI] implemented. I 
couldn't find a sub task for that. 

> Add support for "add hosts" with Blueprints API
> -----------------------------------------------
>
>                 Key: AMBARI-6275
>                 URL: https://issues.apache.org/jira/browse/AMBARI-6275
>             Project: Ambari
>          Issue Type: Epic
>          Components: ambari-server
>    Affects Versions: 1.7.0
>            Reporter: Yusaku Sako
>            Assignee: John Speidel
>             Fix For: 2.1.0
>
>
> Support for "adding hosts" based on *blueprint* style *host_group* via Ambari 
> REST API. There are two scenarios to consider for this JIRA:
> 1) Add hosts based on an existing host in the cluster (and it's *blueprint* 
> style *host_group* component layout). This enables the user to add hosts with 
> components similar to existing hosts in the cluster. For example: expand this 
> cluster with these X hosts and make each of these hosts like Y host 
> (components + configs) existing in the cluster.
> 2) Add hosts based on components + configs. This would be a verbose method 
> that uses *blueprint* style *host_groups* and *configs* to allow you to add 
> hosts to a cluster that do not necessarily have a component layout or config 
> of a similar host existing in the cluster. For example: expand this cluster 
> with these X hosts and make each of these hosts include Y components with Z 
> configs. 



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