I am trying to use gremlin with python with gremlinpython package. I am getting the following error. Can anyone tell me how to solve this ? Any help is appreciated.
Traceback (most recent call last):
File "C:/Users/Yash/IdeaProjects/new/gremlin.py", line 10, in <module>
g = graph.traversal().withRemote(DriverRemoteConnection('ws://localhost:8182/gremlin','g'))
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36-32\lib\site-packages\gremlin_python\driver\driver_remote_connection.py", line 45, in __init__
password=password)
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36-32\lib\site-packages\gremlin_python\driver\client.py", line 76, in __init__
self._fill_pool()
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36-32\lib\site-packages\gremlin_python\driver\client.py", line 88, in _fill_pool
conn = self._get_connection()
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36-32\lib\site-packages\gremlin_python\driver\client.py", line 101, in _get_connection
self._transport_factory, self._executor, self._pool)
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36-32\lib\site-packages\gremlin_python\driver\connection.py", line 40, in __init__
self.connect()
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36-32\lib\site-packages\gremlin_python\driver\connection.py", line 46, in connect
self._transport.connect(self._url)
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36-32\lib\site-packages\gremlin_python\driver\tornado\transport.py", line 33, in connect
lambda: websocket.websocket_connect(url))
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36-32\lib\site-packages\tornado\ioloop.py", line 458, in run_sync
return future_cell[0].result()
File "C:\Users\Yash\AppData\Local\Programs\Python\Python36-32\lib\site-packages\tornado\concurrent.py", line 238, in result
raise_exc_info(self._exc_info)
File "<string>", line 4, in raise_exc_info
ConnectionRefusedError: [Errno 10061] Unknown error
check your configration,set the host as ip not hostname
Related
I use ubuntu 20.04 in AWS.
I have created a python asyio webapp.
I use Nginx.
The Nginx default page could load successfully.
However, after deploying my webapp, error occurs:
Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 503, in _connect
await self._request_authentication()
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 796, in _request_authentication
await self._process_auth(plugin_name, auth_packet)
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 819, in _process_auth
await self.sha256_password_auth(auth_packet)
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 970, in sha256_password_auth
pkt = await self._read_packet()
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 593, in _read_packet
packet.check_error()
File "/usr/local/lib/python3.8/dist-packages/pymysql/protocol.py", line 220, in check_error
err.raise_mysql_exception(self._data)
File "/usr/local/lib/python3.8/dist-packages/pymysql/err.py", line 109, in raise_mysql_exception
raise errorclass(errno, errval)
pymysql.err.OperationalError: (1045, "Access denied for user 'www'#'localhost' (using password: YES)")
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "app.py", line 154, in <module>
loop.run_until_complete(init(loop))
File "/usr/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete
return future.result()
File "app.py", line 142, in init
yield from orm.create_pool(loop=loop, **configs.db)
File "/home/ubuntu/srv/awesome/www/orm.py", line 17, in create_pool
__pool = yield from aiomysql.create_pool(
File "/usr/local/lib/python3.8/dist-packages/aiomysql/pool.py", line 29, in _create_pool
await pool._fill_free_pool(False)
File "/usr/local/lib/python3.8/dist-packages/aiomysql/pool.py", line 167, in _fill_free_pool
conn = await connect(echo=self._echo, loop=self._loop,
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 75, in _connect
await conn._connect()
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 521, in _connect
raise OperationalError(2003,
pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1'")
How to fix my problem?
I typed the following code in python, to establish a connection but it is giving me Authentication error--
import mysql.connector
mdb=mysql.connector.connect(host='localhost',user='root',passwd='SyedAli')
print(mdb)
And the error is---
Traceback (most recent call last): File "D:\mysqlconnection.py",
line 2, in
mdb=mysql.connector.connect(host='localhost',user='root',passwd='SyedAli')
File
"C:\Users\Name\AppData\Local\Programs\Python\Python37-32\Lib\mysql\connector__init__.py",
line 179, in connect
return MySQLConnection(*args, **kwargs) File "C:\Users\Name\AppData\Local\Programs\Python\Python37-32\Lib\mysql\connector\connection.py",
line 95, in init
self.connect(**kwargs) File "C:\Users\Name\AppData\Local\Programs\Python\Python37-32\Lib\mysql\connector\abstracts.py",
line 716, in connect
self._open_connection() File "C:\Users\Name\AppData\Local\Programs\Python\Python37-32\Lib\mysql\connector\connection.py",
line 210, in _open_connection
self._ssl) File "C:\Users\Name\AppData\Local\Programs\Python\Python37-32\Lib\mysql\connector\connection.py",
line 142, in _do_auth
auth_plugin=self._auth_plugin) File "C:\Users\Name\AppData\Local\Programs\Python\Python37-32\Lib\mysql\connector\protocol.py",
line 102, in make_auth
auth_data, ssl_enabled) File "C:\Users\Name\AppData\Local\Programs\Python\Python37-32\Lib\mysql\connector\protocol.py",
line 58, in _auth_response
auth = get_auth_plugin(auth_plugin)( File "C:\Users\Name\AppData\Local\Programs\Python\Python37-32\Lib\mysql\connector\authentication.py",
line 191, in get_auth_plugin
"Authentication plugin '{0}' is not supported".format(plugin_name))
mysql.connector.errors.NotSupportedError: Authentication plugin
'caching_sha2_password' is not supported
Pleae tell me how to fix this error.
I installed ev3dev on my ev3 brick so I could create programs on it with python. I am trying to use the "rpyc" library for python which can be found here. However, when I try to run this basic script which is given as an example on the link above:
import rpyc
conn = rpyc.classic.connect('192.168.137.3') # host name or IP address of the EV3
ev3 = conn.modules['ev3dev.ev3'] # import ev3dev.ev3 remotely
m = ev3.LargeMotor('outA')
m.run_timed(time_sp=1000, speed_sp=600)
I get multiple errors thrown at me through the terminal followed by the connection closing. I have followed all the instructions on the page and I also started the server script on the ev3 brick beforehand. When I run the above program the errors from python are displayed:
Traceback (most recent call last):
File "C:/Python27/cooode/moottertest.py", line 2, in <module>
conn = rpyc.classic.connect('192.168.137.3') # host name or IP address of the EV3
File "C:\Python27\lib\site-packages\rpyc\utils\classic.py", line 65, in connect
return factory.connect(host, port, SlaveService, ipv6 = ipv6)
File "C:\Python27\lib\site-packages\rpyc\utils\factory.py", line 90, in connect
return connect_stream(s, service, config)
File "C:\Python27\lib\site-packages\rpyc\utils\factory.py", line 51, in connect_stream
return connect_channel(Channel(stream), service = service, config = config)
File "C:\Python27\lib\site-packages\rpyc\utils\factory.py", line 40, in connect_channel
return Connection(service, channel, config = config)
File "C:\Python27\lib\site-packages\rpyc\core\protocol.py", line 147, in __init__
self._init_service()
File "C:\Python27\lib\site-packages\rpyc\core\protocol.py", line 150, in _init_service
self._local_root.on_connect()
File "C:\Python27\lib\site-packages\rpyc\core\service.py", line 145, in on_connect
self._conn.builtin = self._conn.modules.__builtin__
File "C:\Python27\lib\site-packages\rpyc\core\service.py", line 114, in __getattr__
return self[name]
File "C:\Python27\lib\site-packages\rpyc\core\service.py", line 111, in __getitem__
self.__cache[name] = self.__getmodule(name)
File "C:\Python27\lib\site-packages\rpyc\core\netref.py", line 196, in __call__
return syncreq(_self, consts.HANDLE_CALL, args, kwargs)
File "C:\Python27\lib\site-packages\rpyc\core\netref.py", line 71, in syncreq
return conn.sync_request(handler, oid, *args)
File "C:\Python27\lib\site-packages\rpyc\core\protocol.py", line 435, in sync_request
self.serve(0.1)
File "C:\Python27\lib\site-packages\rpyc\core\protocol.py", line 383, in serve
data = self._recv(timeout, wait_for_lock = True)
File "C:\Python27\lib\site-packages\rpyc\core\protocol.py", line 341, in _recv
data = self._channel.recv()
File "C:\Python27\lib\site-packages\rpyc\core\channel.py", line 50, in recv
header = self.stream.read(self.FRAME_HEADER.size)
File "C:\Python27\lib\site-packages\rpyc\core\stream.py", line 190, in read
raise EOFError("connection closed by peer")
EOFError: connection closed by peer
>>>
Then on my SSH session, here are the errors that are displayed:
robot#ev3dev:~$ ./rpyc_server.sh
INFO:SLAVE/18812:server started on [0.0.0.0]:18812
INFO:SLAVE/18812:accepted 192.168.137.1:5725
INFO:SLAVE/18812:welcome [192.168.137.1]:5725
INFO:SLAVE/18812:goodbye [192.168.137.1]:5725
ERROR:SLAVE/18812:client connection terminated abruptly
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/rpyc/utils/server.py", line 172, in _authenticate_and_serve_client
self._serve_client(sock2, credentials)
File "/usr/lib/python3/dist-packages/rpyc/utils/server.py", line 197, in _serve_client
conn._init_service()
File "/usr/lib/python3/dist-packages/rpyc/core/protocol.py", line 154, in _init_service
self._local_root.on_connect()
File "/usr/lib/python3/dist-packages/rpyc/core/service.py", line 150, in on_connect
self._conn.builtin = self._conn.modules.builtins
File "/usr/lib/python3/dist-packages/rpyc/core/service.py", line 121, in __getattr__
return self[name]
File "/usr/lib/python3/dist-packages/rpyc/core/service.py", line 118, in __getitem__
self.__cache[name] = self.__getmodule(name)
TypeError: 'b'instancemethod'' object is not callable
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python3.4/threading.py", line 920, in _bootstrap_inner
self.run()
File "/usr/lib/python3.4/threading.py", line 868, in run
self._target(*self._args, **self._kwargs)
File "/usr/lib/python3/dist-packages/rpyc/utils/server.py", line 172, in _authenticate_and_serve_client
self._serve_client(sock2, credentials)
File "/usr/lib/python3/dist-packages/rpyc/utils/server.py", line 197, in _serve_client
conn._init_service()
File "/usr/lib/python3/dist-packages/rpyc/core/protocol.py", line 154, in _init_service
self._local_root.on_connect()
File "/usr/lib/python3/dist-packages/rpyc/core/service.py", line 150, in on_connect
self._conn.builtin = self._conn.modules.builtins
File "/usr/lib/python3/dist-packages/rpyc/core/service.py", line 121, in __getattr__
return self[name]
File "/usr/lib/python3/dist-packages/rpyc/core/service.py", line 118, in __getitem__
self.__cache[name] = self.__getmodule(name)
TypeError: 'b'instancemethod'' object is not callable
What is going wrong here in these errors?
Are you connecting python2 and python3? ev3dev uses python2.
Use pyenv to install python3 and use it so that your python version of PC and ev3 are the same.
https://gist.github.com/jaydenkieran/75b2bbc32b5b70c4fdfb161ecdb6daa2
You might need to run this command first to install through curl:
sudo apt-get install curl
I have two python scripts, currentdataupload.py and productioncount.py on my Ubuntu server. currentdataupload.py uploads dummy current data and productioncount.py accesses that data to do some calculations. The code runs perfectly in other scenarios without disrupting the MongoDB, but when I run both of these codes simultaneously using nohup after a few seconds it exits the mongoDB service and is no longer able to upload or retrieve data. I would like to know if I am doing the entire process the right way or I am messing up somewhere big time.
Error log
Traceback (most recent call last):
File "/python_codes/currentdataupload.py", line 38, in <module>
result = posts.insert_one(post_data)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/collection.py", line 630, in insert_one
bypass_doc_val=bypass_document_validation),
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/collection.py", line 535, in _insert
check_keys, manipulate, write_concern, op_id, bypass_doc_val)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/collection.py", line 516, in _insert_one
check_keys=check_keys)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 244, in command
self._raise_connection_failure(error)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 372, in _raise_connection_failure
raise error
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 239, in command
read_concern)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/network.py", line 96, in command
response = receive_message(sock, 1, request_id)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/network.py", line 123, in receive_message
header = _receive_data_on_socket(sock, 16)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/network.py", line 161, in _receive_data_on_socket
raise AutoReconnect("connection closed")
pymongo.errors.AutoReconnect: connection closed
Traceback (most recent call last):
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 543, in connect
sock = _configured_socket(self.address, self.opts)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 452, in _configured_socket
sock = _create_connection(address, options)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 436, in _create_connection
raise err
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 429, 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 "/python_codes/productioncount.py", line 267, in <module>
result = col2.find_one({"date": date, "machine": machine})
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/collection.py", line 1014, in find_one
for result in cursor.limit(-1):
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/cursor.py", line 1090, in next
if len(self.__data) or self._refresh():
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/cursor.py", line 1012, in _refresh
self.__read_concern))
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/cursor.py", line 850, in __send_message
**kwargs)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/mongo_client.py", line 844, in _send_message_with_response
exhaust)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/mongo_client.py", line 855, in _reset_on_error
return func(*args, **kwargs)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/server.py", line 99, in send_message_with_response
with self.get_socket(all_credentials, exhaust) as sock_info:
File "/root/anaconda3/lib/python3.5/contextlib.py", line 59, in __enter__
return next(self.gen)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/server.py", line 163, in get_socket
with self.pool.get_socket(all_credentials, checkout) as sock_info:
File "/root/anaconda3/lib/python3.5/contextlib.py", line 59, in __enter__
return next(self.gen)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 582, in get_socket
sock_info = self._get_socket_no_auth()
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 628, in _get_socket_no_auth
sock_info = self._check(sock_info)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 682, in _check
return self.connect()
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 555, in connect
_raise_connection_failure(self.address, error)
File "/root/anaconda3/lib/python3.5/site-packages/pymongo/pool.py", line 65, in _raise_connection_failure
raise AutoReconnect(msg)
pymongo.errors.AutoReconnect: localhost:27017: [Errno 111] Connection refused
MongoDB shouldn't crash. Please file a bug report, including the Python script you run and a complete MongoDB logfile, at jira.mongodb.org.
I just encountered the problem with connecting the SDN switch, pica 8 3290, with ryu's of-config library and python paramiko library.
Here's the traceback msg:
=================================================================================
xdn41o71:ryu Mac$ sudo ryu-manager ryu/app/of_config.py
Password:
loading app ryu/app/of_config.py
Connected (version 2.0, client OpenSSH_6.0p1)
Authentication (password) successful!
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.7/bin/ryu-manager", line 9, in <module>
load_entry_point('ryu==3.20.1', 'console_scripts', 'ryu-manager')()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/ryu/cmd/manager.py", line 88, in main
app_mgr.load_apps(app_lists)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/ryu/base/app_manager.py", line 390, in load_apps
cls = self.load_app(app_cls_name)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/ryu/base/app_manager.py", line 366, in load_app
mod = utils.import_module(name)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/ryu/utils.py", line 91, in import_module
__import__(name)
File "/Users/Mac/ryu/ryu/app/of_config.py", line 9, in <module>
unknown_host_cb=lambda host, fingeprint: True)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/ryu/lib/of_config/capable_switch.py", line 50, in __init__
self.netconf = connect(*self._connect_args, **self._connect_kwargs)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/ryu/contrib/ncclient/manager.py", line 67, in connect_ssh
session.connect(*args, **kwds)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/ryu/contrib/ncclient/transport/ssh.py", line 208, in connect
c.invoke_subsystem("netconf")
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/paramiko/channel.py", line 60, in _check
return func(self, *args, **kwds)
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/paramiko/channel.py", line 254, in invoke_subsystem
self._wait_for_event()
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/paramiko/channel.py", line 1086, in _wait_for_event
raise e
paramiko.ssh_exception.SSHException: Channel closed.
===============================================================================
I've googled the problem, paramiko.ssh_exception.SSHException: Channel closed.,
however, there isn't any appropriate solution to my problem.
Anyone can give me some instructions to solve this problem?