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https://issues.apache.org/jira/browse/AMBARI-7615?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitry Lysnichenko resolved AMBARI-7615.
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Resolution: Fixed
committed to trunk
> 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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