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https://issues.apache.org/jira/browse/WHIRR-214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12984973#action_12984973
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Tom White commented on WHIRR-214:
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> A general solution would be to just have the user change the instance
> teamplates and then have whirr figure out the difference.
Indeed. To clarify a little further, I think we're talking about changing the
cardinality (e.g. "10 dn+tt" to "20 dn+tt") rather than the cardinality and the
groups (e.g. "10 dn+tt" to "20 dn+tt+hbase-regionserver"). In the latter case,
Whirr would just start 20 new nodes.
> Add nodes to running clusters
> -----------------------------
>
> Key: WHIRR-214
> URL: https://issues.apache.org/jira/browse/WHIRR-214
> Project: Whirr
> Issue Type: New Feature
> Reporter: Elliott Clark
>
> I would like to be able to add a node to a running cluster.
> For example if I have created a hadoop, hbase, zookeeper cluster I would like
> to be able to add region servers to hbase, Zookeeper nodes to the quorum,
> and task nodes to hadoop.
> Something akin to the functionality of the hbase-ec2 script. Where if I
> launch a node on an already running cluster. It is configured to join the
> cluster.
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