Replies: 0
I’m not a Kerberos wizard, so I’m on a bit of a learning curve. I’ve followed all of the Kerberos instructions in the HDP 2.1 documentation and run into an issue where my datanodes won’t start (3 node cluster). If I roll back all of the xml files to non-kerberos versions, I can start everything from the command line. When I shut down the cluster and roll in the kerberos versions of the xml files, I’m able to start the namenode, but all of the datanodes refuse to start and the only clue I have is as follows;
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2014-07-24 11:04:22,181 INFO datanode.DataNode (SignalLogger.java:register(91)) - registered UNIX signal handlers for [TERM, HUP, INT]
2014-07-24 11:04:22,399 WARN common.Util (Util.java:stringAsURI(56)) - Path /opt/hadoop/hdfs/dn should be specified as a URI in configuration files. Please update hdfs configuration.
2014-07-24 11:04:23,055 INFO security.UserGroupInformation (UserGroupInformation.java:loginUserFromKeytab(894)) - Login successful for user dn/cvm0930.dg.local@DGKERB.COM using keytab file /etc/security/keytabs/dn.service.keytab
2014-07-24 11:04:23,210 INFO impl.MetricsConfig (MetricsConfig.java:loadFirst(111)) - loaded properties from hadoop-metrics2.properties
2014-07-24 11:04:23,274 INFO impl.MetricsSystemImpl (MetricsSystemImpl.java:startTimer(344)) - Scheduled snapshot period at 60 second(s).
2014-07-24 11:04:23,274 INFO impl.MetricsSystemImpl (MetricsSystemImpl.java:start(183)) - DataNode metrics system started
2014-07-24 11:04:23,279 INFO datanode.DataNode (DataNode.java:<init>(269)) - File descriptor passing is enabled.
2014-07-24 11:04:23,283 INFO datanode.DataNode (DataNode.java:<init>(280)) - Configured hostname is cvm0932.dg.local
2014-07-24 11:04:23,284 FATAL datanode.DataNode (DataNode.java:secureMain(2002)) - Exception in secureMain
java.lang.RuntimeException: Cannot start secure cluster without privileged resources.
at org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:700)
at org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:281)
at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1885)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1772)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1819)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1995)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2019)
2014-07-24 11:04:23,287 INFO util.ExitUtil (ExitUtil.java:terminate(124)) - Exiting with status 1
2014-07-24 11:04:23,289 INFO datanode.DataNode (StringUtils.java:run(640)) - SHUTDOWN_MSG:
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Thanks in advance for your collective help with this.
mit Freundlichen Grüßen (with Friendly Greetings),
Jan