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From "Dmitry Lysnichenko (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-7615) Ambari support for DataNode no longer running as root.
Date Thu, 02 Oct 2014 19:41:33 GMT
Dmitry Lysnichenko created AMBARI-7615:
------------------------------------------

             Summary: Ambari support for DataNode no longer running as root.
                 Key: AMBARI-7615
                 URL: https://issues.apache.org/jira/browse/AMBARI-7615
             Project: Ambari
          Issue Type: Improvement
          Components: ambari-server
    Affects Versions: 1.7.0
            Reporter: Dmitry Lysnichenko
            Assignee: Dmitry Lysnichenko
             Fix For: 1.7.0


This feature is new in Champlain.  
This feature is intended for use in secure (Kerberized) clusters.  The full steps for configuration
are:
# Configure in hdfs-site.xml:
## Set {{dfs.data.transfer.protection}} to {{authentication}}, {{integrity}}, or {{privacy}}.
 I think {{authentication}} makes sense as the default on new installs.
## Set {{dfs.datanode.address}} to use a non-privileged port, i.e. {{0.0.0.0:50010}}.
## Set {{dfs.datanode.https.address}} to use a non-privileged port, i.e. {{0.0.0.0:50475}}.
## Set {{dfs.http.policy}} to {{HTTPS_ONLY}}.
# Start DataNode as hdfs.

BTW, running as root using privileged ports is still a fully supported configuration.  This
should continue to be the default mode.  Running as non-root is opt-in only, so all of the
above should be optional.



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