@classmethod
    def get_failure_signature(cls, instance, serialized_instance, **kwargs):
        return None
Open ports which exist on the node and which are still required are not
dataset/ETHPy150Open opennode/nodeconductor/nodeconductor/core/executors.py/BaseExecutor.get_failure_signature--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/test/test_container.py/OpenPortsTests.test_desired_open_ports_remain