[jira] Commented: (HADOOP-6444) Support additional security group option in hadoop-ec2 script

["Tom White (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-6444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12791511#action_12791511 ] 

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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