Hi Re-posting my previous problem: I am trying to configure Hadoop with Kerberos following the instructions given at <https://cwiki.apache.org/confluence/display/GIRAPH/Quick+Start+-+Running+Giraph+with+Secure+Hadoop>.
Instead of using the principals.sh file, I am creating just a single principal pkalmegh@HADOOP.LOCALDOMAIN and getting the ticket for it in pkalmegh.keytab file. I am storing this in $HOME/kerb-setup/pkalmegh.keytab and using this to configure the hdfs-site and core-site.xml. I am still getting the following Connection Refused error: pkalmegh@sap-OptiPlex-755:~/Projects/hadoop$ bin/hadoop namenode Warning: $HADOOP_HOME is deprecated. 12/11/19 18:30:25 INFO namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG: host = sap-OptiPlex-755/127.0.1.1 STARTUP_MSG: args = [] STARTUP_MSG: version = 1.0.3 STARTUP_MSG: build = https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.0 -r 1335192; compiled by 'hortonfo' on Tue May 8 20:31:25 UTC 2012 ************************************************************/ 12/11/19 18:30:25 INFO impl.MetricsConfig: loaded properties from hadoop-metrics2.properties 12/11/19 18:30:25 INFO impl.MetricsSourceAdapter: MBean for source MetricsSystem,sub=Stats registered. 12/11/19 18:30:25 INFO impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s). 12/11/19 18:30:25 INFO impl.MetricsSystemImpl: NameNode metrics system started 12/11/19 18:30:25 INFO impl.MetricsSourceAdapter: MBean for source ugi registered. 12/11/19 18:30:26 ERROR namenode.NameNode: java.io.IOException: Login failure for pkalmegh@HADOOP.LOCALDOMAIN from keytab /home/pkalmegh/kerb-setup/pkalmegh.keytab at org.apache.hadoop.security.UserGroupInformation.loginUserFromKeytab(UserGroupInformation.java:630) at org.apache.hadoop.security.SecurityUtil.login(SecurityUtil.java:298) at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:264) at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:496) at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1279) at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1288) Caused by: javax.security.auth.login.LoginException: Connection refused at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:700) at com.sun.security.auth.module.Krb5LoginModule.login(Krb5LoginModule.java:542) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at javax.security.auth.login.LoginContext.invoke(LoginContext.java:769) at javax.security.auth.login.LoginContext.access$000(LoginContext.java:186) at javax.security.auth.login.LoginContext$5.run(LoginContext.java:706) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.login.LoginContext.invokeCreatorPriv(LoginContext.java:703) at javax.security.auth.login.LoginContext.login(LoginContext.java:575) at org.apache.hadoop.security.UserGroupInformation.loginUserFromKeytab(UserGroupInformation.java:621) ... 5 more Caused by: java.net.ConnectException: Connection refused at java.net.PlainSocketImpl.socketConnect(Native Method) at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351) at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at java.net.Socket.connect(Socket.java:529) at sun.security.krb5.internal.TCPClient.<init>(TCPClient.java:46) at sun.security.krb5.KrbKdcReq$KdcCommunication.run(KrbKdcReq.java:343) at java.security.AccessController.doPrivileged(Native Method) at sun.security.krb5.KrbKdcReq.send(KrbKdcReq.java:296) at sun.security.krb5.KrbKdcReq.send(KrbKdcReq.java:202) at sun.security.krb5.KrbKdcReq.send(KrbKdcReq.java:175) at sun.security.krb5.KrbAsReq.send(KrbAsReq.java:431) at sun.security.krb5.Credentials.sendASRequest(Credentials.java:400) at sun.security.krb5.Credentials.acquireTGT(Credentials.java:350) at com.sun.security.auth.module.Krb5LoginModule.attemptAuthentication(Krb5LoginModule.java:672) ... 17 more 12/11/19 18:30:26 INFO namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at sap-OptiPlex-755/127.0.1.1 ************************************************************/ --------------------------------------------------------------------------------------------------- I am running Hadoop 1.0.3 on Ubuntu 12.04. I have specified dfs.namenode.user.name to be pkalmegh and am using pkalmegh@HADOOP.LOCALDOMAIN as my principal. Any idea how to fix this issue? Regards, Prajakta
