def CheckPrerequisites():
  if FLAGS['num_vms'].present and FLAGS.num_vms < 3:
    raise ValueError('Web Serving requires at least 3 VMs')
Verifies that the required resources are present.
dataset/ETHPy150Open GoogleCloudPlatform/PerfKitBenchmarker/perfkitbenchmarker/linux_benchmarks/cloudsuite_web_serving_benchmark.py/CheckPrerequisites