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https://issues.apache.org/jira/browse/HADOOP-2474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12590169#action_12590169
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Tom White commented on HADOOP-2474:
-----------------------------------

bq. The new contrib/ec2 scripts (HADOOP-2410) have no dependency on DynDNS. 
Maybe this issue should be closed?

I find it useful to have a bookmark to point to the master's web UI, and I 
think we need DynDNS for this. (Or Elastic IPs.)

> Automate EC2 DynDNS setup
> -------------------------
>
>                 Key: HADOOP-2474
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2474
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/ec2
>            Reporter: Tom White
>
> Use the DynDNS webservice 
> (https://www.dyndns.com/developers/specs/syntax.html) to automatically set up 
> DNS for the EC2 cluster master node. If no DynDNS credentials are set (in 
> hadoop-ec2-env.sh) then prompt the user to set up DNS manually (the existing 
> behaviour).

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