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https://issues.apache.org/jira/browse/HADOOP-6444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12791511#action_12791511
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Tom White commented on HADOOP-6444:
-----------------------------------
Security groups are an EC2-only feature so it would be good to document that in
the option help (just like --key-name, for example). Otherwise, this looks good.
> Support additional security group option in hadoop-ec2 script
> -------------------------------------------------------------
>
> Key: HADOOP-6444
> URL: https://issues.apache.org/jira/browse/HADOOP-6444
> Project: Hadoop Common
> Issue Type: Improvement
> Components: contrib/ec2
> Reporter: Paul Egan
> Priority: Minor
> Attachments: hadoop-ec2-py-0.3.0.patch,
> hadoop-trunk-contrib-cloud.patch
>
>
> When deploying a hadoop cluster on ec2 alongside other services it is very
> useful to be able to specify additional (pre-existing) security groups to
> facilitate access control. For example one could use this feature to add a
> cluster to a generic "hadoop" group, which authorizes hdfs access from
> instances outside the cluster. Without such an option the access control for
> the security groups created by the script need to manually updated after
> cluster launch.
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