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Posted to hdfs-dev@hadoop.apache.org by "Fengnan Li (JIRA)" <ji...@apache.org> on 2019/03/01 01:15:00 UTC

[jira] [Created] (HDFS-14327) Support security for DNS resolving

Fengnan Li created HDFS-14327:
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             Summary: Support security for DNS resolving
                 Key: HDFS-14327
                 URL: https://issues.apache.org/jira/browse/HDFS-14327
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Fengnan Li
            Assignee: Fengnan Li


The DNS resolving, clients will get the IP of the servers (NN/Routers) and use the IP addresses to access the machine. This will fail in secure environment as Kerberos is using the domain name in the principal so it won't recognize the IP addresses.

This task is mainly adding a reverse look up on the current basis and get the domain name after the IP is fetched. After that clients will still use the domain name to access the servers.



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