Connecting to Kerberrized HDFS , java.lang.IllegalArgumentException: Failed to specify server's Kerberos principal name;

Question

I am trying to connect to a Kerberized hdfs cluster , with below code , with same below code i am able to access hbase ofcourse with HBaseConfiguration,

Configuration config = new Configuration();
config.set("hadoop.security.authentication", "Kerberos");

UserGroupInformation.setConfiguration(config);
UserGroupInformation ugi = null;
ugi = UserGroupInformation.loginUserFromKeytabAndReturnUGI("me@EXAMPLE>COM","me.keytab");
model = ugi.doAs((PrivilegedExceptionAction<Map<String,Object>>) () -> { 
  testHadoop(hcb.gethDFSConfigBean());
  return null;
});

I have been able to successfully access Solr, Impala with same keytab and principal, I am getting this weird Failed to find service name for hdfs.

Please look at below stack trace

java.io.IOException: Failed on local exception: java.io.IOException: java.lang.IllegalArgumentException: Failed to specify server's Kerberos principal name; Host Details : local host is: "Securonix-int3.local/10.0.4.36"; destination host is: "sobd189.securonix.com":8020; 
    at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:772)
    at org.apache.hadoop.ipc.Client.call(Client.java:1472)
    at org.apache.hadoop.ipc.Client.call(Client.java:1399)
    at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232)
    at com.sun.proxy.$Proxy9.getFileInfo(Unknown Source)
    at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:752)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)
    at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
    at com.sun.proxy.$Proxy10.getFileInfo(Unknown Source)
    at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1988)
    at org.apache.hadoop.hdfs.DistributedFileSystem$18.doCall(DistributedFileSystem.java:1118)
    at org.apache.hadoop.hdfs.DistributedFileSystem$18.doCall(DistributedFileSystem.java:1114)
    at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
    at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1114)
    at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1400)
    at com.securonix.application.ui.uiUtil.SnyperUIUtil.lambda$main$4(SnyperUIUtil.java:1226)
    at com.securonix.application.ui.uiUtil.SnyperUIUtil$$Lambda$6/1620890840.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:422)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
    at com.securonix.application.ui.uiUtil.SnyperUIUtil.main(SnyperUIUtil.java:1216)
Caused by: java.io.IOException: java.lang.IllegalArgumentException: Failed to specify server's Kerberos principal name
    at org.apache.hadoop.ipc.Client$Connection$1.run(Client.java:680)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:422)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
    at org.apache.hadoop.ipc.Client$Connection.handleSaslConnectionFailure(Client.java:643)
    at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:730)
    at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:368)
    at org.apache.hadoop.ipc.Client.getConnection(Client.java:1521)
    at org.apache.hadoop.ipc.Client.call(Client.java:1438)
    ... 23 more
Caused by: java.lang.IllegalArgumentException: Failed to specify server's Kerberos principal name
    at org.apache.hadoop.security.SaslRpcClient.getServerPrincipal(SaslRpcClient.java:322)
    at org.apache.hadoop.security.SaslRpcClient.createSaslClient(SaslRpcClient.java:231)
    at org.apache.hadoop.security.SaslRpcClient.selectSaslClient(SaslRpcClient.java:159)
    at org.apache.hadoop.security.SaslRpcClient.saslConnect(SaslRpcClient.java:396)
    at org.apache.hadoop.ipc.Client$Connection.setupSaslConnection(Client.java:553)
    at org.apache.hadoop.ipc.Client$Connection.access$1800(Client.java:368)
    at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:722)
    at org.apache.hadoop.ipc.Client$Connection$2.run(Client.java:718)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:422)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
    at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:717)

After i enabled the debug code for Kerberos i got the below debug log when i call FileSystem.get(); Kerberor debug log :

Java config name: null Java config name: null Native config name: /etc/krb5.conf Native config name: /etc/krb5.conf Loaded from native config Loaded from native config 16/02/22 15:53:14 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Java config name: null Java config name: null Native config name: /etc/krb5.conf Native config name: /etc/krb5.conf Loaded from native config Loaded from native config

KdcAccessibility: reset >>> KdcAccessibility: reset KdcAccessibility: reset >>> KdcAccessibility: reset KeyTabInputStream, readName(): EXAMPLE.COM >>> KeyTabInputStream, readName(): EXAMPLE.COM KeyTabInputStream, readName(): securonix >>> KeyTabInputStream, readName(): securonix KeyTab: load() entry length: 55; type: 23 >>> KeyTab: load() entry length: 55; type: 23 KeyTabInputStream, readName(): EXAMPLE.COM >>> KeyTabInputStream, readName(): EXAMPLE.COM KeyTabInputStream, readName(): securonix >>> KeyTabInputStream, readName(): securonix KeyTab: load() entry length: 71; type: 18 >>> KeyTab: load() entry length: 71; type: 18 Looking for keys for: [email protected] Looking for keys for: [email protected] Added key: 18version: 1 Added key: 18version: 1 Added key: 23version: 1 Added key: 23version: 1 Looking for keys for: [email protected] Looking for keys for: [email protected] Added key: 18version: 1 Added key: 18version: 1 Added key: 23version: 1 Added key: 23version: 1 default etypes for default_tkt_enctypes: 18 18 16. default etypes for default_tkt_enctypes: 18 18 16. KrbAsReq creating message >>> KrbAsReq creating message KrbKdcReq send: kdc=sobd189.securonix.com TCP:88, timeout=30000, number of retries =3, #bytes=139 >>> KrbKdcReq send: kdc=sobd189.securonix.com TCP:88, timeout=30000, number of retries =3, #bytes=139 KDCCommunication: kdc=sobd189.securonix.com TCP:88, timeout=30000,Attempt =1, #bytes=139 >>> KDCCommunication: kdc=sobd189.securonix.com TCP:88, timeout=30000,Attempt =1, #bytes=139 DEBUG: TCPClient reading 639 bytes >>>DEBUG: TCPClient reading 639 bytes KrbKdcReq send: #bytes read=639 >>> KrbKdcReq send: #bytes read=639 KdcAccessibility: remove sobd189.securonix.com >>> KdcAccessibility: remove sobd189.securonix.com Looking for keys for: [email protected] Looking for keys for: [email protected] Added key: 18version: 1 Added key: 18version: 1 Added key: 23version: 1 Added key: 23version: 1 EType: sun.security.krb5.internal.crypto.Aes256CtsHmacSha1EType >>> EType: sun.security.krb5.internal.crypto.Aes256CtsHmacSha1EType KrbAsRep cons in KrbAsReq.getReply securonix

Interestingly when i use api of the file system like hdfs.exists()

 >>>KinitOptions cache name is /tmp/krb5cc_501
 >> Acquire default native Credentials
 default etypes for default_tkt_enctypes: 18 18 16.
 >>> Found no TGT's in LSA

Solution

I believe the problem is that HDFS expects the Configuration to have a value for dfs.datanode.kerberos.principal, which is the principal of the datanodes, and it is missing in this case.

I had this same problem when I created a Configuration instance from only core-site.xml and forgot to add hdfs-site.xml. As soon as I added hdfs-site.xml it started working, and hdfs-site.xml had:

 <property>
      <name>dfs.datanode.kerberos.principal</name>
      <value>....</value>
 </property>

Hope this helps.

Comments

[ab853]

Setting this and dfs.namenode.kerberos.principal on the Configuration object worked for me