Created attachment 957214 [details] Launch datanode under root user, add necessary environment. Description of problem: For secure mode to be enabled in Hadoop cluster, there are needed some (rather small?) changes in packaging: 1) /usr/bin/container-executor must be owned by group used for starting the nodemanager daemon (it could be 'yarn', but upstream documentation mentions 'hadoop') 2) datanode must be launched under root (it will use jsvc and drop privileges). There are needed also some environment variables. Version-Release number of selected component (if applicable): 2.4.1-6.fc21 How reproducible: Enabling security is described here: http://hadoop.apache.org/docs/stable/hadoop-project-dist/hadoop-common/SecureMode.html I used these properties in /etc/hadoop/*-site.xml files: hadoop.security.authentication => kerberos hadoop.security.auth_to_local RULE:[2:$1;$2@$0](^jhs;.*@REALM$)s/^.*$/mapred/ RULE:[2:$1;$2@$0](^[nd]n;.*@REALM$)s/^.*$/hdfs/ DEFAULT dfs.block.access.token.enable => true yarn.nodemanager.container-executor.class => org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor yarn.nodemanager.linux-container-executor.group => hadoop ... And edited /etc/hadoop/container-executor.cfg file. Actual results: Hadoop datanode daemon rejects to activate secure mode (logged in /var/log/hadoop-*/*.log). Hadoop nodemanager won't launch with the container. There is also other way, how to check this: runuser yarn -s /bin/bash /bin/bash -c 'container-executor --checksetup' Expected results: No changes needed in unit files and owerships to activate secure mode. Additional info: Patches for hadoop package attached. It works in both modes - without security and with security enabled. Packages with the patches built also in COPR: http://copr-fe.cloud.fedoraproject.org/coprs/valtri/hadoop/
Created attachment 957216 [details] Change owner of container-executor to nodemanager daemon group.
This message is a reminder that Fedora 21 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 21. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '21'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 21 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.
Fedora 21 changed to end-of-life (EOL) status on 2015-12-01. Fedora 21 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.