node not connected Connection refused

[pilchita]

Hi, i add a new node, but not connect with CeSi:

Traceback (most recent call last):
File "/opt/cesi/cesi/core/handlers.py", line 9, in wrapped
return f(*args, **kwargs)
File "/opt/cesi/cesi/core/node.py", line 43, in get_system_list_methods_for_xmlrpc_server
self.connection.system.listMethods()
File "/usr/lib64/python3.7/xmlrpc/client.py", line 1112, in call
return self.__send(self.__name, args)
File "/usr/lib64/python3.7/xmlrpc/client.py", line 1452, in __request
verbose=self.__verbose
File "/usr/lib64/python3.7/xmlrpc/client.py", line 1154, in request
return self.single_request(host, handler, request_body, verbose)
File "/usr/lib64/python3.7/xmlrpc/client.py", line 1187, in single_request
dict(resp.getheaders())
xmlrpc.client.ProtocolError: <ProtocolError for 10.54.130.34:80/RPC2: 404 NOT FOUND>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/opt/cesi/venv/lib64/python3.7/site-packages/flask/app.py", line 2073, in wsgi_app
response = self.full_dispatch_request()
File "/opt/cesi/venv/lib64/python3.7/site-packages/flask/app.py", line 1518, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/opt/cesi/venv/lib64/python3.7/site-packages/flask/app.py", line 1516, in full_dispatch_request
rv = self.dispatch_request()
File "/opt/cesi/venv/lib64/python3.7/site-packages/flask/app.py", line 1502, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
File "/opt/cesi/cesi/decorators.py", line 17, in wrap
return f(*args, **kwargs)
File "/opt/cesi/cesi/api/v2/nodes.py", line 15, in get_nodes
return jsonify(status="success", nodes=cesi.serialize_nodes())
File "/opt/cesi/cesi/core/cesi.py", line 115, in serialize_nodes
return [n.serialize() for n in self.nodes]
File "/opt/cesi/cesi/core/cesi.py", line 115, in
return [n.serialize() for n in self.nodes]
File "/opt/cesi/cesi/core/node.py", line 112, in serialize
_serialized_general = self.serialize_general()
File "/opt/cesi/cesi/core/node.py", line 105, in serialize_general
"connected": self.is_connected,
File "/opt/cesi/cesi/core/node.py", line 33, in is_connected
return self.__connect()
File "/opt/cesi/cesi/core/node.py", line 36, in __connect
status, msg = self.get_system_list_methods_for_xmlrpc_server()
File "/opt/cesi/cesi/core/handlers.py", line 13, in wrapped
return False, err.faultString
AttributeError: 'ProtocolError' object has no attribute 'faultString'
10.54.171.60 - - [20/Jan/2022 14:01:16] "GET /api/v2/nodes/ HTTP/1.1" 500 -

[[nodes]]
name = "api-data-service"
environment = ""
username = ""
password = ""
host = "10.x.x.x"
port = "80"

on port 80 is running an nginx proxy to supervisor port.

Which ports should I open?
Regards,