ZMQ Error when running locust in distributed mode

Describe the bug

I have a simple locust setup with a master and 50 slave workers. Everything seems fine but whenever the workers start loading, I get a ZMQError. I’m not sure if this is something I’m doing wrong on my end or from locust.

Expected behavior

Workers should be loaded without any error.

Actual behavior

Steps to reproduce

# master
locust -f locustfile.py --master

# workers
import subprocesses
processes = []
for _ in range(50):
    print('Starting worker : {worker_id}')
    s = subprocess.Popen([
        'locust', '--loglevel', 'debug', '--worker', '-f', "locust-scripts/simple.py",
        '--master-host', "127.0.0.1", '--host', None
    ])
    processes.append(s)

for s in processes:
    s.communicate()

Environment

• OS: Mac OS
• Python version: 3.8
• Locust version: 1.0.2
• Locust command line that you ran: locust
• Locust file contents (anonymized if necessary):

class SimpleBehavior(TaskSet):

    @task
    def index(self):
        self.client.get('/')


class MyLocust(HttpLocust):
    task_set = SimpleBehavior
    min_wait = 0
    max_wait = 0

[Olamyy]

It runs. The None is really just a placeholder I used while asking the question. I’m gonna try getting the latest version of pyzmq and see if that works. Thanks.

[cyberw]

Closing due to inactivity