This is the documentation for Cloudera Enterprise 5.12.x. Documentation for other versions is available at Cloudera Documentation.

Authenticating Kerberos Principals in Java Code

This topic provides an example of how to authenticate a Kerberos principal in a Java application using the org.apache.hadoop.security.UserGroupInformation class.

The following code snippet authenticates the cloudera principal using the cloudera.keytab file: 
// Authenticating Kerberos principal
System.out.println("Principal Authentication: ");
final String user = "cloudera@CLOUDERA.COM";
final String keyPath = "cloudera.keytab";
UserGroupInformation.loginUserFromKeytab(user, keyPath);
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