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Python myqsl.connector connection error on pyton.org

I have a mysql server on my computer. I did port fowarding on my modem. I checked port is open or not with signal sites and return success answer. When i try connect on my pc with host = "localhost" i returned success answer. But when i try connect mysql server with python.org's shell, i returned connection error same like this:
Traceback (most recent call last):
File “/usr/lib/python3.8/site-packages/mysql/connector/network.py”, line 529, in open_connection
self.sock.connect(sockaddr)
ConnectionRefusedError: [Errno 111] Connection refused
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File “”, line 1, in
File “/usr/lib/python3.8/site-packages/mysql/connector/init.py”, line 177, in connect
return MySQLConnection(*args, **kwargs)
File “/usr/lib/python3.8/site-packages/mysql/connector/connection.py”, line 104, in init
self.connect(**kwargs)
File “/usr/lib/python3.8/site-packages/mysql/connector/abstracts.py”, line 781, in connect
self._open_connection()
File “/usr/lib/python3.8/site-packages/mysql/connector/connection.py”, line 284, in _open_connection
self._socket.open_connection()
File “/usr/lib/python3.8/site-packages/mysql/connector/network.py”, line 531, in open_connection
raise errors.InterfaceError(
mysql.connector.errors.InterfaceError: 2003: Can’t connect to MySQL server on ‘myipadress:3306’ (111 Con
nection refused)
How can i connect my mysql server ?

In order to encounter this error first do the following:
Make sure the host is in the format 127.0.0.1 and there are no / or \ in the host name
Check if you have specified all the correct info about the server like passwords, user, root, etc
Make sure the server is active and there is no fire wall blocking your access
Remove all the unwanted users from the server

mysql.connector.errors.interfaceerror 2003

My summer project is to put data into SQL for processing. Unfortunately I can not establish a connection to the SQL with mysql connector.
The python file I am testing with are two lines:
import mysql.connector
db1 = mysql.connector.connect(host="localhost", database="thename", user="user",password="passw")
The error message is:
C:\Projekt\Python efforts...>test.py Traceback (most recent call
last): File
"C:\Users\Niklas\AppData\Local\Programs\Python\Python35\lib\site-packages\mysql\connector\network.py",
line 472, in open_connection
self.sock.connect(sockaddr) ConnectionRefusedError: [WinError 10061] Det gick inte att göra en anslutning eftersom måldatorn aktivt
nekade det
During handling of the above exception, another exception occurred:
Traceback (most recent call last): File "C:\Projekt\Python
efforts...\test.py", line 4, in
db1 = mysql.connector.connect(host="localhost", database="thename", user="user",password="passw") File
"C:\Users\Niklas\AppData\Local\Programs\Python\Python35\lib\site-packages\mysql\connector__init__.py",
line 179, in connect
return MySQLConnection(*args, **kwargs) File "C:\Users\Niklas\AppData\Local\Programs\Python\Python35\lib\site-packages\mysql\connector\connection.py",
line 95, in init
self.connect(**kwargs) File "C:\Users\Niklas\AppData\Local\Programs\Python\Python35\lib\site-packages\mysql\connector\abstracts.py",
line 719, in connect
self._open_connection() File "C:\Users\Niklas\AppData\Local\Programs\Python\Python35\lib\site-packages\mysql\connector\connection.py",
line 206, in _open_connection
self._socket.open_connection() File "C:\Users\Niklas\AppData\Local\Programs\Python\Python35\lib\site-packages\mysql\connector\network.py",
line 475, in open_connection
errno=2003, values=(self.get_address(), _strioerror(err))) mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL
server on 'localhost:3306' (10061 Det gick inte att göra en anslutning
eftersom måldatorn aktivt nekade det)
C:\Projekt\Python efforts...>
I have tried restarting and enabling services and computer several times. The user and password I use grants me access in SQL Server Management Studio. I have created a firewall rule to allow communication on port 3306, though it is not listed as one of the active ports when I look. I have also tried disabling the firewall on my computer (though not on the router as it should not be needed for a localhost query?). Using wireshark I don't seem to get any traffic at all on port 3306(!?). I cannot telnet to localhost though tracert has no problems. I have tried with different IPs and domain name that are valid. I have enabled TCP/IP settings for a bunch of the different IP versions under TCP/IP protocol in the SQL Server Configuration manager (though I'm not sure how I did that as it is write protected so I can't do the rest of them).
Everything listed here yields the same result so I assume that there is something very fundamentally (basic and easy?) wrong with what i am doing. Please pitch in with any and all troubleshooting tips you can find for resolving this connection issue as I am on my third day of getting absolutely nowhere.

Once again it has been proven that it is easy to get blinded when digging. I was trying to use mysql connector to connect to a ms sql. I have now switched to pypyodbc to handle the communication with the SQL.

Connection to remote MySQL db from Python 3.4

I'm trying to connect to two MySQL databases (one local, one remote) at the same time using Python 3.4 but I'm really struggling. Splitting the problem into three:
Step 1: connect to the local DB. This is working fine
using PyMySQL. (MySQLdb isn't compatible with Python 3.4, of
course.)
Step 2: connect to the remote DB (which needs to
use SSH). I can get it to work from the Linux command prompt but not
from Python... see below.
Step 3: connect to both at the
same time. I think I'm supposed to use a different port for the
remote database so that I can have both connections at the same time
but I'm out of my depth here! If it's relevant then the two DBs will
have different names. And if this question isn't directly related,
please tell me and I'll post it separately.
Unfortunately I'm not really starting in the right place for a newbie... once I can get this working I can happily go back to basic Python and SQL but hopefully someone will take pity on me and give me a hand to get started!
For Step 2, my code is below. It seems to be quite close to the sshtunnel example which answers this question Python - SSH Tunnel Setup and MySQL DB Access - though that uses MySQLdb. For the moment I'm embedding the connection parameters – I'll move them to the config file once it's working properly.
import dropbox, pymysql, shlex, shutil, subprocess
from sshtunnel import SSHTunnelForwarder
import iot_config as cfg
def CloseLocalDB():
localcur.close()
localdb.close()
def CloseRemoteDB():
# Disconnect from the database
# remotecur.close()
# remotedb.close()
# Close the SSH tunnel
# ssh.close()
print("end of CloseRemoteDB function")
def OpenLocalDB():
global localcur, localdb
localdb = pymysql.connect(host=cfg.localdbconn['host'], user=cfg.localdbconn['user'], passwd=cfg.localdbconn['passwd'], db=cfg.localdbconn['db'])
localcur = localdb.cursor()
def OpenRemoteDB():
global remotecur, remotedb
with SSHTunnelForwarder(
('my_remote_site', 22),
ssh_username = "my_ssh_username",
ssh_private_key = "/etc/ssh/my_private_key.ppk",
ssh_private_key_password = "my_private_key_password",
remote_bind_address = ('127.0.0.1', 3308)) as server:
remotedb = None
#Following line gives an error if uncommented
# remotedb = pymysql.connect(host='127.0.0.1', user='remote_db_user', passwd='remote_db_password', db='remote_db_name', port=server.local_bind_port)
#remotecur = remotedb.cursor()
# Main program starts here
OpenLocalDB()
CloseLocalDB()
OpenRemoteDB()
CloseRemoteDB()
This is the error I'm getting:
2016-04-21 19:13:33,487 | ERROR | Secsh channel 0 open FAILED: Connection refused: Connect failed
2016-04-21 19:13:33,553 | ERROR | In #1 <-- ('127.0.0.1', 60591) to ('127.0.0.1', 3308) failed: ChannelException(2, 'Connect failed')
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 60591)
Traceback (most recent call last):
File "/usr/local/lib/python3.4/dist-packages/sshtunnel.py", line 286, in handle
src_address)
File "/usr/local/lib/python3.4/dist-packages/paramiko/transport.py", line 834, in open_channel
raise e
paramiko.ssh_exception.ChannelException: (2, 'Connect failed')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.4/socketserver.py", line 613, in process_request_thread
self.finish_request(request, client_address)
File "/usr/lib/python3.4/socketserver.py", line 344, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/lib/python3.4/socketserver.py", line 669, in __init__
self.handle()
File "/usr/local/lib/python3.4/dist-packages/sshtunnel.py", line 296, in handle
raise HandlerSSHTunnelForwarderError(msg)
sshtunnel.HandlerSSHTunnelForwarderError: In #1 <-- ('127.0.0.1', 60591) to ('127.0.0.1', 3308) failed: ChannelException(2, 'Connect failed')
----------------------------------------
Traceback (most recent call last):
File "/home/pi/Documents/iot_pm2/iot_ssh_example_for_help.py", line 38, in <module>
OpenRemoteDB()
File "/home/pi/Documents/iot_pm2/iot_ssh_example_for_help.py", line 32, in OpenRemoteDB
remotedb = pymysql.connect(host='127.0.0.1', user='remote_db_user', passwd='remote_db_password', db='remote_db_name', port=server.local_bind_port)
File "/usr/local/lib/python3.4/dist-packages/pymysql/__init__.py", line 88, in Connect
return Connection(*args, **kwargs)
File "/usr/local/lib/python3.4/dist-packages/pymysql/connections.py", line 678, in __init__
self.connect()
File "/usr/local/lib/python3.4/dist-packages/pymysql/connections.py", line 889, in connect
self._get_server_information()
File "/usr/local/lib/python3.4/dist-packages/pymysql/connections.py", line 1190, in _get_server_information
packet = self._read_packet()
File "/usr/local/lib/python3.4/dist-packages/pymysql/connections.py", line 945, in _read_packet
packet_header = self._read_bytes(4)
File "/usr/local/lib/python3.4/dist-packages/pymysql/connections.py", line 981, in _read_bytes
2013, "Lost connection to MySQL server during query")
pymysql.err.OperationalError: (2013, 'Lost connection to MySQL server during query')
Thanks in advance.

Answering my own question because, with a lot of help from J.M. Fernández on Github, I have a solution: the example that I copied at the beginning uses port 3308 but port 3306 is the standard. Once I'd changed this it started working.

Error 2003 Can't connect to MySQL server on 'localhost' PyMySQL

I'm not really sure what to do here. I'm trying to connect to MySQL Community Server by using a python script, and I'm running into an error message. This is being run on OS X Yosemite. I'm using the PyMySQL module, which imports correctly. The line
con = pms.connect(host='localhost',user='jaxon',passwd='password')
throws the following error message:
Traceback (most recent call last):
File "/Users/icefreak21/Documents/Python Files/DBConnector.py", line 4, in <module>
con = pms.connect(host='127.0.0.1',user='root',passwd='c0c0_puFF')
File "/Users/icefreak21/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/pymysql/__init__.py", line 88, in Connect
return Connection(*args, **kwargs)
File "/Users/icefreak21/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/pymysql/connections.py", line 644, in __init__
self._connect()
File "/Users/icefreak21/Library/Enthought/Canopy_64bit/User/lib/python2.7/site-packages/pymysql/connections.py", line 869, in _connect
raise exc
pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on 'localhost' ([Errno 61] Connection refused)")
I've searched around on the site and haven't found a question that details this particular situation. As far as I can tell, the server is running; the kicker is that I have no problem connecting through the command line with the same host, user, and password. I've tried switching the host name to '127.0.0.1' and I've tried specifying the port number (3306).
I found one solution that suggested specifying the socket, but when I ran the suggested code
./mysqladmin variables | grep socket
to find the socket file to specify, I get the following error code:
./mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'jaxon'#'localhost' (using password: NO)'
Does anyone have any other suggestions?

I had the same problem. I solved it by changing the port. You can add your port like this:
3307(port = 3307)
I'm recommending this because the mysql port of mac vision might be 3307.

'Interface error: 2003' when connecting to database

I'm trying to use MySQL Connection/Python to connect to my database.
Here's the output I'm getting:
Traceback (most recent call last):
File "bh2000.py", line 33, in <module>
cnx = mysql.connector.connect(**config)
File "/Library/Python/2.7/site-packages/mysql/connector/__init__.py", line 155, in connect
return MySQLConnection(*args, **kwargs)
File "/Library/Python/2.7/site-packages/mysql/connector/connection.py", line 123, in __init__
self.connect(**kwargs)
File "/Library/Python/2.7/site-packages/mysql/connector/connection.py", line 430, in connect
self._open_connection()
File "/Library/Python/2.7/site-packages/mysql/connector/connection.py", line 393, in _open_connection
self._socket.open_connection()
File "/Library/Python/2.7/site-packages/mysql/connector/network.py", line 375, in open_connection
errno=2003, values=(self.get_address(), _strioerror(err)))
mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on 'host xxx.db.1and1.com:3306' (8 nodename nor servname provided, or not known)
Here's the code I'm using:
import mysql.connector
cnx = mysql.connector.connect(user='xxx', password='xxx',
host='xxx.db.1and1.com',
database='xxx')
cnx.close()
Where am I going wrong?

Did you specify the correct port?
Is your MySQL server running?
Is a firewall blocking access?
Try removing anonymous user account from your MySQL server?
Default port if not specified is 3306. Otherwise there is nothing wrong with your code. The problem is with your MySQL server or the connection is being blocked by your firewall or the server firewall. Make sure port 3306 is open and not blocked.
db = mysql.connector.connect(user='xxx', password='xxx', host='xxx.db.1and1.com', port=3306)

I believe the answer is because the hosting service you use, 1and1.com, uses a firewall that blocks all outside access to their databases. You have to run the code from a url that they host or it will not work.
I use the same server and had to figure this out the hard way myself. Below is a copy of what they have on one of their pages:
Access to the database via your website/presence only Please always
establish the connection to your database via your website/presence.
For security reasons, it is not possible to access the database
directly, for example via your local computer (external ODBC
connection).
To protect your data, your MySQL database is located on a dedicated
database server that is protected by a firewall.

Add a port argument in the command.
cnx = mysql.connector.connect(user='myuser',
password='mypassword', host='localhost', port='3306', database='mydb')

I got the same error. Once crosscheck the details you have entered. The host must be in the format 127.0.0.1. There should not be any / after the url.

Use localhost instead of IP, if you are working on same server.
myConnection = mysql.connector.connect(user='uname', password='pass', host='localhost', port='3306', database='databasename')