script to deploy is not working - is this my firewall stopping it?

[Mriben1]

I am deploying on RHEL8+ , for all external sites, I need to whitelist them in our firewall. I was able to do that for the pre-request and I have git, python , pip and docker installed. But when I went to deploy using " python deploy_docker.py start "I think I am getting an error because it is being blocked but I can't tell what the url is that I need to whitelist:
Not sure what to do:

Mike

[mwriben@roprldsa1 ansible]$ python3 deploy_docker.py start
Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
chunked=chunked)
File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/lib64/python3.6/http/client.py", line 1269, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib64/python3.6/http/client.py", line 1315, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib64/python3.6/http/client.py", line 1264, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib64/python3.6/http/client.py", line 1040, in _send_output
self.send(msg)
File "/usr/lib64/python3.6/http/client.py", line 978, in send
self.connect()
File "/usr/local/lib/python3.6/site-packages/docker/transport/unixconn.py", line 30, in connect
sock.connect(self.unix_socket)
FileNotFoundError: [Errno 2] No such file or directory

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/requests/adapters.py", line 449, in send
timeout=timeout
File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 638, in urlopen
_stacktrace=sys.exc_info()[2])
File "/usr/lib/python3.6/site-packages/urllib3/util/retry.py", line 368, in increment
raise six.reraise(type(error), error, _stacktrace)
File "/usr/lib/python3.6/site-packages/urllib3/packages/six.py", line 692, in reraise
raise value.with_traceback(tb)
File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
chunked=chunked)
File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 354, in _make_request
conn.request(method, url, **httplib_request_kw)
File "/usr/lib64/python3.6/http/client.py", line 1269, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/usr/lib64/python3.6/http/client.py", line 1315, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/usr/lib64/python3.6/http/client.py", line 1264, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/usr/lib64/python3.6/http/client.py", line 1040, in _send_output
self.send(msg)
File "/usr/lib64/python3.6/http/client.py", line 978, in send
self.connect()
File "/usr/local/lib/python3.6/site-packages/docker/transport/unixconn.py", line 30, in connect
sock.connect(self.unix_socket)
urllib3.exceptions.ProtocolError: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.6/site-packages/docker/api/client.py", line 214, in _retrieve_server_version
return self.version(api_version=False)["ApiVersion"]
File "/usr/local/lib/python3.6/site-packages/docker/api/daemon.py", line 181, in version
return self._result(self._get(url), json=True)
File "/usr/local/lib/python3.6/site-packages/docker/utils/decorators.py", line 46, in inner
return f(self, *args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/docker/api/client.py", line 237, in _get
return self.get(url, **self._set_request_timeout(kwargs))
File "/usr/lib/python3.6/site-packages/requests/sessions.py", line 546, in get
return self.request('GET', url, **kwargs)
File "/usr/lib/python3.6/site-packages/requests/sessions.py", line 533, in request
resp = self.send(prep, **send_kwargs)
File "/usr/lib/python3.6/site-packages/requests/sessions.py", line 646, in send
r = adapter.send(request, **kwargs)
File "/usr/lib/python3.6/site-packages/requests/adapters.py", line 498, in send
raise ConnectionError(err, request=request)
requests.exceptions.ConnectionError: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "deploy_docker.py", line 1075, in
containers_start(**vars(args))
File "deploy_docker.py", line 169, in containers_start
client = docker_client()
File "deploy_docker.py", line 554, in docker_client
client = docker.from_env(version='auto', timeout=3600)
File "/usr/local/lib/python3.6/site-packages/docker/client.py", line 101, in from_env
**kwargs_from_env(**kwargs)
File "/usr/local/lib/python3.6/site-packages/docker/client.py", line 45, in init
self.api = APIClient(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/docker/api/client.py", line 197, in init
self._version = self._retrieve_server_version()
File "/usr/local/lib/python3.6/site-packages/docker/api/client.py", line 222, in _retrieve_server_version
f'Error while fetching server API version: {e}'
docker.errors.DockerException: Error while fetching server API version: ('Connection aborted.', FileNotFoundError(2, 'No such file or directory'))

[manthey]

I don't know -- the exception looks like the program can't find a running docker service on the local machine. Does docker version report both a docker client and server version?