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https://issues.apache.org/jira/browse/AMBARI-7246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Krisztian Horvath updated AMBARI-7246:
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Description:
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.
was: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.
> 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: 1.7.0
>
> 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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