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https://issues.apache.org/jira/browse/HADOOP-13673?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer updated HADOOP-13673:
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Release Note: Apache Hadoop is now able to switch to the appropriate user
prior to launching commands so long as the command is being run with a
privileged user and the appropriate set of _USER variables are defined. This
re-enables sbin/start-all.sh and sbin/stop-all.sh as well as fixes the
sbin/start-dfs.sh and sbin/stop-dfs.sh to work with both secure and unsecure
systems. (was: Apache Hadoop is now able to switch to the appropriate user
prior to launching commands so long as the command is being run with a
privileged user and the appropriate _USER variable is set. This re-enables
sbin/start-all.sh, sbin/stop-all.sh, and fixes the sbin/start-dfs.sh and
sbin/stop-dfs.sh to work with both secure and unsecure systems.)
> Update scripts to be smarter when running with privilege
> --------------------------------------------------------
>
> Key: HADOOP-13673
> URL: https://issues.apache.org/jira/browse/HADOOP-13673
> Project: Hadoop Common
> Issue Type: New Feature
> Components: scripts
> Affects Versions: 3.0.0-alpha1, 3.0.0-alpha2
> Reporter: Allen Wittenauer
> Assignee: Allen Wittenauer
> Labels: security
> Attachments: HADOOP-13673.00.patch, HADOOP-13673.01.patch,
> HADOOP-13673.02.patch, HADOOP-13673.03.patch
>
>
> As work continues on HADOOP-13397, it's become evident that we need better
> hooks to start daemons as specifically configured users. Via the
> (command)_(subcommand)_USER environment variables in 3.x, we actually have a
> standardized way to do that. This in turn means we can make the sbin scripts
> super functional with a bit of updating:
> * Consolidate start-dfs.sh and start-secure-dns.sh into one script
> * Make start-\*.sh and stop-\*.sh know how to switch users when run as root
> * Undeprecate start/stop-all.sh so that it could be used as root for
> production purposes and as a single user for non-production users
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