[jira] [Updated] (AMBARI-7246) Ability to know the host-hostgroup relationship

["Jayush Luniya (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-7246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jayush Luniya updated AMBARI-7246:
----------------------------------
    Fix Version/s:     (was: 2.0.0)
                   2.1.0

> Ability to know the host-hostgroup relationship
> -----------------------------------------------
>
>                 Key: AMBARI-7246
>                 URL: https://issues.apache.org/jira/browse/AMBARI-7246
>             Project: Ambari
>          Issue Type: Technical task
>          Components: ambari-server
>    Affects Versions: 1.7.0
>            Reporter: Krisztian Horvath
>            Assignee: Krisztian Horvath
>             Fix For: 2.1.0
>
>         Attachments: AMBARI-7246-0.patch, AMBARI-7246-0.png
>
>
> Use case: A cluster is installed from a blueprint thus every host belongs to a host group. We created an open source project Periscope which can scale up or down based on host groups. Currently the association is stored at Cloudbreak side which actually installed the cluster. It would be much convenient if we could ask Ambari which node(s) can we delete from a host group in case of a scale down.
> For example if we'd say we want to remove 2 nodes from slaves host group we could ask ambari which nodes belong to that group.



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