hadoop KerberosUtil 做Kerberos认证

public class KerberosUtil {
    
    /**
     * 通过Kerberos认证用户的,注意keytabPath为本地路径不是HDFS路径
     * @param conf
     * @param user  user为运行jar的hadoop用户
     * @param keytabPath
     * @throws IOException
     */
    public static void AuthenByKerberos(Configuration conf,String user,String keytabPath) throws IOException{
        UserGroupInformation.setConfiguration(conf);
        UserGroupInformation.getCurrentUser().setAuthenticationMethod(AuthenticationMethod.KERBEROS);
        UserGroupInformation.loginUserFromKeytab(user,keytabPath);
    }
    
    /**
     * 通过Kerberos认证用户的,注意keytabPath为本地路径不是HDFS路径
     * @param conf
     * @param keytabPath
     * @throws IOException
     */
    public static void AuthenByKerberos(Configuration conf,String keytabPath) throws IOException{
        String user=UserGroupInformation.getLoginUser().getUserName();
        AuthenByKerberos(conf,user,keytabPath);
    }