code: public static void main(String[] args) {
      if (args.length != 0) {
        LOG.info("java -cp {} {}", RuntimeConstants.ALLUXIO_JAR,
            AlluxioWorkerMonitor.class.getCanonicalName());
        LOG.warn("ignoring arguments");
      }
      AlluxioConfiguration conf = new InstancedConfiguration(ConfigurationUtils.defaults());
  
      HealthCheckClient client = new WorkerHealthCheckClient(
          NetworkAddressUtils.getConnectAddress(NetworkAddressUtils.ServiceType.WORKER_RPC, conf),
          ONE_MIN_EXP_BACKOFF, conf);
      if (!client.isServing()) {
        System.exit(1);
      }
      System.exit(0);
    }
docs: Starts the Alluxio worker monitor.
  
  @param args command line arguments, should be empty