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From "Chen Liang (Jira)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13541) NameNode Port based selective encryption
Date Fri, 23 Aug 2019 18:10:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13541?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16914529#comment-16914529

Chen Liang commented on HDFS-13541:

Thanks [~shv]! I've committed to branch-3.1.

> NameNode Port based selective encryption
> ----------------------------------------
>                 Key: HDFS-13541
>                 URL: https://issues.apache.org/jira/browse/HDFS-13541
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode, namenode, security
>            Reporter: Chen Liang
>            Assignee: Chen Liang
>            Priority: Major
>              Labels: release-blocker
>         Attachments: HDFS-13541-branch-3.1.001.patch, HDFS-13541-branch-3.1.002.patch,
HDFS-13541-branch-3.2.001.patch, HDFS-13541-branch-3.2.002.patch, NameNode Port based selective
> Here at LinkedIn, one issue we face is that we need to enforce different security requirement
based on the location of client and the cluster. Specifically, for clients from outside
of the data center, it is required by regulation that all traffic must be encrypted. But for
clients within the same data center, unencrypted connections are more desired to avoid the
high encryption overhead. 
> HADOOP-10221 introduced pluggable SASL resolver, based on which HADOOP-10335 introduced
WhitelistBasedResolver which solves the same problem. However we found it difficult to fit
into our environment for several reasons. In this JIRA, on top of pluggable SASL resolver,
*we propose a different approach of running RPC two ports on NameNode, and the two ports will
be enforcing encrypted and unencrypted connections respectively, and the following DataNode
access will simply follow the same behaviour of encryption/unencryption*. Then by blocking
unencrypted port on datacenter firewall, we can completely block unencrypted external access.

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