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Date: Wed, 28 Jul 2010 12:42:18 -0400 (EDT)
From: "Todd Lipcon (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Subject: [jira] Commented: (HDFS-1150) Verify datanodes' identities to
 clients in secure clusters
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    [ https://issues.apache.org/jira/browse/HDFS-1150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12893240#action_12893240 ] 

Todd Lipcon commented on HDFS-1150:
-----------------------------------

What about the case where root access is not available for jsvc but a secure cluster is required? There are other ways to secure the high port - eg you can use SELinux or AppArmor to restrict the ability to bind port 50010 to user "hdfs".

I think this jsvc approach is a reasonable one, but it's not one-size-fits-all, and given there are reasonably simple external ways to get the same security, it should be a configurable requirement.

> Verify datanodes' identities to clients in secure clusters
> ----------------------------------------------------------
>
>                 Key: HDFS-1150
>                 URL: https://issues.apache.org/jira/browse/HDFS-1150
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: data-node
>    Affects Versions: 0.22.0
>            Reporter: Jakob Homan
>            Assignee: Jakob Homan
>         Attachments: commons-daemon-1.0.2-src.tar.gz, HDFS-1150-BF-Y20-LOG-DIRS-2.patch, HDFS-1150-BF-Y20-LOG-DIRS.patch, HDFS-1150-BF1-Y20.patch, hdfs-1150-bugfix-1.1.patch, hdfs-1150-bugfix-1.2.patch, hdfs-1150-bugfix-1.patch, HDFS-1150-Y20-BetterJsvcHandling.patch, HDFS-1150-y20.build-script.patch, HDFS-1150-Y20S-ready-5.patch, HDFS-1150-Y20S-ready-6.patch, HDFS-1150-Y20S-ready-7.patch, HDFS-1150-Y20S-ready-8.patch, HDFS-1150-Y20S-Rough-2.patch, HDFS-1150-Y20S-Rough-3.patch, HDFS-1150-Y20S-Rough-4.patch, HDFS-1150-Y20S-Rough.txt
>
>
> Currently we use block access tokens to allow datanodes to verify clients' identities, however we don't have a way for clients to verify the authenticity of the datanodes themselves.

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