CODEWITHSUNDEEP
kerberosjava-securityspring-security-kerberoshive-metastore
UDIT JOSHI
UDIT JOSHI

Reputation: 1378

How to fix Keberos Authentication prompt while running Java application

I wrote a Java application to connect with hive-metastore. It works fine but when I run the jar file on Linux it asks for Kerberos Username and password . I already specified the Kerberos principal and keytab file in my code. And I don't want to use additional jass.config file. Is there any way to resolve that problem?

Here is my source code

    HiveConf conf = new HiveConf();
    MetastoreConf.setVar(conf, ConfVars.THRIFT_URIS, "thrift://HOSTNAME:9083");
    MetastoreConf.setBoolVar(conf, ConfVars.USE_THRIFT_SASL, true);
    MetastoreConf.setVar(conf, ConfVars.KERBEROS_PRINCIPAL, "hive/[email protected]");
    MetastoreConf.setVar(conf, ConfVars.KERBEROS_KEYTAB_FILE, "hive.keytab");
    System.setProperty("java.security.krb5.realm", "EXAMPLE.COM");
    System.setProperty("java.security.krb5.kdc", "HOSTNAME");
    System.setProperty("javax.security.auth.useSubjectCredsOnly", "false");
    HiveMetaStoreClient client = new HiveMetaStoreClient(conf);
    client.close();

Expected Result- It should verify the connection successfully

Actual result-

java -jar Application

Kerberos username [root]: Kerberos password [root]:

I want to bypass this kerberos terminal prompt authentication. Is there any way to do that?

Upvotes: 1

Views: 1429

Answers (1)

UDIT JOSHI
UDIT JOSHI

Reputation: 1378

          final String user = "hive/[email protected]";
          final String keyPath = "hive.keytab";
          Configuration conf = new Configuration();
          System.out.println("In case of kerberos authentication");
          conf.set("hadoop.security.authentication", "kerberos");
          System.setProperty("java.security.krb5.kdc", "HOSTNAME");
          System.setProperty("java.security.krb5.realm", "EXAMPLE.COM");

          UserGroupInformation.setConfiguration(conf);
          UserGroupInformation.loginUserFromKeytab(user, keyPath);

          HiveConf conf1 = new HiveConf(); MetastoreConf.setVar(conf1,
          ConfVars.THRIFT_URIS, "thrift://HOSTNAME:9083"); HiveMetaStoreClient
          client = new HiveMetaStoreClient(conf1);
          client.close();

It works fine now

Upvotes: 2

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