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PYTHON ERROR '2003 (HY000): Can't connect to MySQL server on 'localhost:3306' (99)' while creating SQL database

Wrote a code to create a sql database via Python:
import mysql.connector
from mysql.connector import Error
def create_connection(host_name, user_name, user_password):
connection = None
try:
connection = mysql.connector.connect(
host=host_name,
user=user_name,
passwd=user_password
)
print("Connection to MySQL DB successful")
except Error as e:
print(f"The error '{e}' occurred")
return connection
connection = create_connection("localhost", "phpmyadmin","mhldb2022!")
But I get an error message:
The error '2003 (HY000): Can't connect to MySQL server on 'localhost:3306' (99)' occurred
In order for the database to be created in phpMyAdmin, I installed WAMP.
Access to phpMyAdmin :
localhost/phpmyadmin/
(default login is "root", no password).
Could you help me to solve the problem?
I really can't understand what is wrong here.

Connect to MySql DB using mysql.connector

I am using mysql.connector to connect to a mysql DB, while i can connect manually to the db using sql server management, if i try connecting via code, it returns this error after awhile :
mysql.connector.errors.OperationalError: 2055: Lost connection to MySQL server at 'host:1234', system error: 10054 An existing connection was forcibly closed by the remote host
These are the connection details :
connection = mysql.connector.connect(host='host',
port = '1234',
database='DBname',
user='Usr',
password='pwd')
If I create a local mysql DB, the connection works just fine.
I assume some security stuff is going on, anyone else had encountered this situation ? Anything that I'm doing wrong? Should I add anything to the connection.connect input ?
Full code for reference :
import mysql.connector
from mysql.connector import Error
connection = mysql.connector.connect(host='host',
port = '1234',
database='DBname',
user='Usr',
password='pwd')
sql_select_Query = "select * from TableName"
cursor = connection.cursor()
cursor.execute(sql_select_Query)
records = cursor.fetchall()
print("Total numb of rows selected is : ", cursor.rowcount)
print("\nPrinting each row")
for row in records:
print(row)
connection.close()

Connecting to Teradata using teradatasql module in Python

I am trying to connect to Teradata using teradatasql module in Python. The code is running fine on localhost, but once deployed on the server as part of the server code, it is throwing the error.
the code:
import teradatasql
try:
host, username, password = 'hostname', 'username', '****'
session = teradatasql.connect(host=host, user=username, password=password, logmech="LDAP")
except Exception as e:
print(e)
Error I am getting on server:
[Version 16.20.0.60] [Session 0] [Teradata SQL Driver] Failure receiving Config Response message header↵ at gosqldriver/teradatasql.
(*teradataConnection).makeDriverError TeradataConnection.go:1101↵ at gosqldriver/teradatasql.
(*teradataConnection).sendAndReceive TeradataConnection.go:1397↵ at gosqldriver/teradatasql.newTeradataConnection TeradataConnection.go:180↵ at gosqldriver/teradatasql.(*teradataDriver).
Open TeradataDriver.go:32↵ at database/sql.dsnConnector.Connect sql.go:600↵ at database/sql.(*DB).conn sql.go:1103↵ at database/sql.
(*DB).Conn sql.go:1619↵ at main.goCreateConnection goside.go:275↵ at main.
_cgoexpwrap_212fad278f55_goCreateConnection _cgo_gotypes.go:240↵ at runtime.call64 asm_amd64.s:574↵ at runtime.cgocallbackg1 cgocall.go:316↵ at runtime.cgocallbackg cgocall.go:194↵ at runtime.cgocallback_gofunc asm_amd64.s:826↵ at runtime.goexit asm_amd64.s:2361↵Caused by read tcp IP:PORT->IP:PORT: wsarecv: An existing connection was forcibly closed by the remote host

The root cause of this error is outlined here by tomnolan:
The stack trace indicates that a TCP socket connection was made to the database, then the driver transmitted a Config Request message to the database, then the driver timed out waiting for a Config Response message from the database.
In other words, the driver thought that it had established a TCP socket connection, but the TCP socket connection was probably not fully successful, because a failure occurred on the initial message handshake between the driver and the database.
The most likely cause is that some kind of networking problem prevented the driver from properly connecting to the database.
I had this issue today and resolved it by altering my host. I am also on a VPN and found that the actual host name in DNS didn't work, but the ALIAS available did. For example on Windows:
C:\WINDOWS\system32>nslookup MYDB-TEST # <-- works
Server: abcd.domain.com
Address: <OMITTED>
Name: MYDB.domain.com # <-- doesn't work
Address: <OMITTED>
Aliases: mydb-test.domain.com # <-- works
I recognize this may be a specific solution option that may not work for everyone, but the root of the problem is confirmed to be a TCP connection issue from my experience.

(pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query)

I am having problem querying to a MariaDB database that is hosted on a Virtual Machine. I am using the dataset Python module.
This is my code:
import dataset
db = dataset.connect("mysql+pymysql://....")
Q = "select * from mytable Limit 1"
print(db.query(Q))
However I would get this error message:
(pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server
during query ([WinError 10060] A connection attempt failed because the
connected party did not properly respond after a period of time, or
established connection failed because connected host has failed to
respond)') (Background on this error at: http://sqlalche.me/e/e3q8)
I have tried to configure the timeout variables such as; connect_timeout, wait_timeout etc within the my.cnf file and sending a very simple query, but the issue still exist.
Any solutions or suggestions would be highly appreciated. Thank you

SSHTunnel for remote access of postgres server

I'm new to using postgres as well as ssh and am having some trouble understanding what I need to do to get remote clients accessing a postgres server. Right now I've got one computer with a server running that I can access using psycopg2 but now I want to query the server using another computer. I've looked around and found examples using sshtunneler, but I feel like I'm missing some puzzle pieces.
import psycopg2
from sshtunnel import SSHTunnelForwarder
import time
with SSHTunnelForwarder(
('192.168.1.121', 22),
ssh_password="????",
ssh_username="????",
remote_bind_address=('127.0.0.1', 5432)) as server:
conn = psycopg2.connect(database="networkdb",port=server.local_bind_port)
curs = conn.cursor()
sql = "select * from Cars"
curs.execute(sql)
rows = curs.fetchall()
print(rows)
My first confusion is I'm not sure what username/password should be. I downloaded putty and put the remote address info in the tunnel section using this tutorial but I have no idea if that's doing anything. When I try to start the server I get the error
2017-03-03 10:03:28,742| ERROR | Could not connect to gateway 192.168.1.121:22 : 10060
Any sort of help/explanation of what I need to do would be appreciated.
If I can do it without ssh then that would be better. Currently running this:
psycopg2.connect(dbname='networkinfodb', user='postgres', host='168.192.1.121', password='postgres', port=5432)
outputs...
OperationalError Traceback (most recent call last)
in ()
----> 1 psycopg2.connect(dbname='networkinfodb', user='postgres', host='168.192.1.121', password='postgres', port=5432)
OperationalError: could not connect to server: Connection timed out (0x0000274C/10060)
Is the server running on host "168.192.1.121" and accepting
TCP/IP connections on port 5432?
and I'm not sure where to go to figure out what the issue is.

So I didn't use ssh tunneling. That was only a backup as I was having trouble connecting to the database using psycopg2. I found that the firewall was blocking the port from being accessed externally so I was able to change that and now I can access the database from clients.