def docker_accessible():
    try:
        client = DockerClient()
        client._client.ping()
    except Exception as e:
        return str(e)
    return None
Refresh the object by re-fetching from the DB.
dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/testtools.py/docker_accessible--crossover with--dataset/ETHPy150Open openstack/ironic/ironic/objects/node.py/Node.refresh