Ich versuche eine Flask/Neo4j App auf einem entfernten Ubuntu Server einzurichten, und ich bin auf ein Problem gestoßen, das ich nicht herausfinden konnte. Meine App verwendet py2neo, aber wenn sie versucht, sich mit dem Graphen zu verbinden, stürzt die App ab und der Neo4j-Prozess scheint aufzuhören. Ich habe, wie dies in einer Python-Shell versucht, verbindet ...py2neo SocketError: Verbindung verweigert, aber curl funktioniert
test = Graph('http://localhost:7474/db/data/',username='neo4j',password='myPassword')
, die fehlschlägt, und macht auch Neo4j außer Betrieb, bis ich es neu starten. Allerdings gibt diese 200 Antworten (und das Web-Interface funktioniert auch):
curl -u neo4j http://localhost:7474/db/data/
requests.get('http://localhost:7474/db/data/', auth=('neo4j','myPassword'))
Ich habe versucht, mehr Informationen als this similar question zu schaffen, weil es scheint, wie die Verbindung von überall, aber py2neo funktioniert.
Hier ist die vollständige Rückverfolgung:
Traceback (most recent call last):
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/database/__init__.py", line 318, in __new__
inst = cls.__instances[key]
KeyError: (<class 'py2neo.database.Graph'>, <ServerAddress settings={'http_port': 7474, 'host': 'localhost'}>, 'data')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/packages/httpstream/http.py", line 322, in submit
response = send()
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/packages/httpstream/http.py", line 317, in send
http.request(xstr(method), xstr(uri.absolute_path_reference), body, headers)
File "/usr/lib/python3.5/http/client.py", line 1106, in request
self._send_request(method, url, body, headers)
File "/usr/lib/python3.5/http/client.py", line 1151, in _send_request
self.endheaders(body)
File "/usr/lib/python3.5/http/client.py", line 1102, in endheaders
self._send_output(message_body)
File "/usr/lib/python3.5/http/client.py", line 934, in _send_output
self.send(msg)
File "/usr/lib/python3.5/http/client.py", line 877, in send
self.connect()
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/packages/httpstream/http.py", line 80, in connect
self.source_address)
File "/usr/lib/python3.5/socket.py", line 711, in create_connection
raise err
File "/usr/lib/python3.5/socket.py", line 702, in create_connection
sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/database/__init__.py", line 327, in __new__
use_bolt = version_tuple(inst.__remote__.get().content["neo4j_version"]) >= (3,)
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/database/http.py", line 154, in get
response = self.__base.get(headers=headers, redirect_limit=redirect_limit, **kwargs)
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/packages/httpstream/http.py", line 966, in get
return self.__get_or_head("GET", if_modified_since, headers, redirect_limit, **kwargs)
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/packages/httpstream/http.py", line 943, in __get_or_head
return rq.submit(redirect_limit=redirect_limit, **kwargs)
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/packages/httpstream/http.py", line 433, in submit
http, rs = submit(self.method, uri, self.body, self.headers)
File "/home/deploy/toponimika/toponimikaenv/lib/python3.5/site-packages/py2neo/packages/httpstream/http.py", line 362, in submit
raise SocketError(code, description, host_port=uri.host_port)
py2neo.packages.httpstream.http.SocketError: Connection refused
Alles, was ich versuchen könnte, um herauszufinden, was würde geschätzt vor sich geht.