Develop Reference

Cloud SQL connection with SQL Alchemy not working

It is impossible to connect an app in Flask / App Engine to Google Cloud MySQL.
The settings seems correct.
Here are the libraries:
python 38
Flask-SQLAlchemy==2.5.1
pymysql==1.0.2
Here is the mydatabase.py:
unix_socket = "/cloudsql/{conn_name}".format(conn_name=DBCONNECTION)
SQLALCHEMY_DATABASE_URI = ("mysql+pymysql://{user}:{password}#/{database}?unix_socket={socket}").format(user=USER, password=PWD,database=SQLDB, socket=unix_socket)
db = SQLAlchemy()
Here is the main.py:
from mydatabase import db,SQLALCHEMY_DATABASE_URI
db.init_app(app)
The error is strange, it seems that the driver isn't working correctly:
"POST /signin HTTP/1.1" 500
2022-12-06 14:41:34 default[2022120025] [2022-12-06 14:41:34,165] ERROR in app: Exception on /signin [POST]
2022-12-06 14:41:34 default[2022120025] Traceback (most recent call last): File "/layers/google.python.pip/pip/lib/python3.8/site-packages/pymysql/connections.py", line 602, in connect sock.connect(self.unix_socket) ConnectionRefusedError: [Errno 111] Connection refused
2022-12-06 14:41:34 default[2022120025] During handling of the above exception, another exception occurred:
2022-12-06 14:41:34 default[2022120025] Traceback (most recent call last): File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/engine/base.py", line 3361, in _wrap_pool_connect return fn() File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 325, in connect return _ConnectionFairy._checkout(self) File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 888, in _checkout fairy = _ConnectionRecord.checkout(pool) File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 491, in checkout rec = pool._do_get() File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/pool/impl.py", line 146, in _do_get self._dec_overflow() File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__ compat.raise_( File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/util/compat.py", line 210, in raise_ raise exception File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/pool/impl.py", line 143, in _do_get return self._create_connection() File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 271, in _create_connection return _ConnectionRecord(self) File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 386, in __init__ self.__connect() File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 685, in __connect pool.logger.debug("Error on connect(): %s", e) File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__ compat.raise_( File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/util/compat.py", line 210, in raise_ raise exception File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/pool/base.py", line 680, in __connect self.dbapi_connection = connection = pool._invoke_creator(self) File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/engine/create.py", line 578, in connect return dialect.connect(*cargs, **cparams) File "/layers/google.python.pip/pip/lib/python3.8/site-packages/sqlalchemy/engine/default.py", line 598, in connect return self.dbapi.connect(*cargs, **cparams) File "/layers/google.python.pip/pip/lib/python3.8/site-packages/pymysql/connections.py", line 353, in __init__ self.connect() File "/layers/google.python.pip/pip/lib/python3.8/site-packages/pymysql/connections.py", line 664, in connect raise exc pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on 'localhost' ([Errno 111] Connection refused)")
I've added additional Cloud SQL admin rights to the Compute Engine default service account and the App Engine default service account, but it doesn't solve the problem.
I've also tried to use the method with the public IP adding the IP into the the authorized list using curl api.ipify.org, but it doesn't work.

In fact, there was initially some rights and install issue, so I've checked a function and installed again the main components.
I've solved the issue by using the shell command gcloud sql instances describe instance_name that activates some admin rights and installing gcloud components install app-engine-python that probably install everything correctly.

How to access an external MySQL database from within a PythonAnywhere Flask Webapp (via Pandas&sqlalchemy): Receiving sqlalchemy.exc.OperationalError

I am attempting to convert a Flask webapp to run on PythonAnywhere instead of my Raspberry Pi on which it is currently hosted and functions perfectly.
One of the core features of the webapp is using Pandas to query an externally hosted MySQL database (NOT hosted on PythonAnywhere).
Previously I have done this using the following method, with no troubles:
import pandas as pd
URI=f"mysql://{user}#{host}:{port}/{schema}"
my_dataframe=pd.read_sql_query(sql="select * from users",con=URI)
Attempting this with the webapp hosted on PythonAnywhere results in a 502-backend error, with an error log of:
File "./webapp.py", line 240, in ages
message_, success=scripts.ages.main()
File "./scripts/ages.py", line 22, in main
my_dataframe=pd.read_sql_query(sql="select * from users",con=URI)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/pandas/io/sql.py", line 383, in read_sql_query
chunksize=chunksize,
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/pandas/io/sql.py", line 1295, in read_query
result = self.execute(*args)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/pandas/io/sql.py", line 1162, in execute
*args, **kwargs
File "<string>", line 2, in execute
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/util/deprecations.py", line 401, in warned
return fn(*args, **kwargs)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 3145, in execute
connection = self.connect(close_with_result=True)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 3204, in connect
return self._connection_cls(self, close_with_result=close_with_result)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 96, in __init__
else engine.raw_connection()
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 3283, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 3254, in _wrap_pool_connect
e, dialect, self
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 2101, in _handle_dbapi_exception_noconnection
sqlalchemy_exception, with_traceback=exc_info[2], from_=e
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 207, in raise_
raise exception
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 3250, in _wrap_pool_connect
return fn()
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/pool/base.py", line 310, in connect
return _ConnectionFairy._checkout(self)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/pool/base.py", line 868, in _checkout
fairy = _ConnectionRecord.checkout(pool)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/pool/base.py", line 476, in checkout
rec = pool._do_get()
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/pool/impl.py", line 146, in _do_get
self._dec_overflow()
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 72, in __exit__
with_traceback=exc_tb,
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 207, in raise_
raise exception
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/pool/impl.py", line 143, in _do_get
return self._create_connection()
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/pool/base.py", line 256, in _create_connection
return _ConnectionRecord(self)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/pool/base.py", line 371, in __init__
self.__connect()
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/pool/base.py", line 666, in __connect
pool.logger.debug("Error on connect(): %s", e)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 72, in __exit__
with_traceback=exc_tb,
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 207, in raise_
raise exception
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/pool/base.py", line 661, in __connect
self.dbapi_connection = connection = pool._invoke_creator(self)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/engine/create.py", line 590, in connect
return dialect.connect(*cargs, **cparams)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 597, in connect
return self.dbapi.connect(*cargs, **cparams)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/MySQLdb/__init__.py", line 130, in Connect
return Connection(*args, **kwargs)
File "/home/mywebapp/.virtualenvs/my-virtualenv/lib/python3.6/site-packages/MySQLdb/connections.py", line 185, in __init__
super().__init__(*args, **kwargs2)
sqlalchemy.exc.OperationalError: (MySQLdb._exceptions.OperationalError) (2003, "Can't connect to MySQL server on '34.105.08.12:8080' (111)")
(Background on this error at: https://sqlalche.me/e/14/e3q8)
(I've changed the IP)
I've take a look at the linked site https://sqlalche.me/e/14/e3q8, but didn't see anything useful on there.
I've also tried googling how to use sqlalchemy within PythonAnywhere. This mostly resulted in questions about connecting to databases hosted by PythonAnywhere, which doesn't help me.
I came across this link:
https://help.pythonanywhere.com/pages/UsingSQLAlchemywithMySQL/
I don't actually know if it's referring to using SQLAlchemy to connect to a PythonAnywhere hosted MySQL database, or an external one, but I tried implementing this anyway. I doubt it makes a difference, but the URI is in a separate file to the Pandas sql query.
#credentials.py
from sqlalchemy import create_engine
URI_string=f"mysql://{user}#{host}:{port}/{schema}"
URI = create_engine(URI_string, pool_recycle=280)
import pandas as pd
import credentials
my_dataframe=pd.read_sql_query(sql="select * from users",con=credentials.URI)
The webapp is still functional when testing on the Pi with this change, however it made no difference in the outcome when testing on PyAnywhere and the same error log output is received.
If anyone has any ideas please let me know!

If you're using a free account, you will only be able to connect out of PythonAnywhere using http(s) to a list of approved sites. So external database connections will not work from a free account.

Connecting Django to PostgreSQL database (GeoDjango)

I am having issues connecting to my Postgresql database with my Django website. My database is set up at Port 5434 as there is already an existing database in the default 5432 port.
This is the error I am getting
Traceback (most recent call last):
File "c:\users\anouphong\appdata\local\programs\python\python38-32\lib\threading.py", line 932, in _bootstrap_inner
self.run()
File "c:\users\anouphong\appdata\local\programs\python\python38-32\lib\threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\autoreload.py", line 64, in wrapper
fn(*args, **kwargs)
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\core\management\commands\runserver.py", line 127, in inner_run
self.check_migrations()
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\core\management\base.py", line 505, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\executor.py", line 18, in __init__
self.loader = MigrationLoader(self.connection)
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\loader.py", line 53, in __init__
self.build_graph()
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\loader.py", line 223, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\recorder.py", line 77, in applied_migrations
if self.has_table():
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\migrations\recorder.py", line 55, in has_table
with self.connection.cursor() as cursor:
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\asyncio.py", line 25, in inner
return func(*args, **kwargs)
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 270, in cursor
return self._cursor()
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 246, in _cursor
self.ensure_connection()
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\asyncio.py", line 25, in inner
return func(*args, **kwargs)
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 230, in ensure_connection
self.connect()
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 230, in ensure_connection
self.connect()
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\asyncio.py", line 25, in inner
return func(*args, **kwargs)
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\base\base.py", line 211, in connect
self.connection = self.get_new_connection(conn_params)
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\utils\asyncio.py", line 25, in inner
return func(*args, **kwargs)
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\django\db\backends\postgresql\base.py", line 199, in get_new_connection
connection = Database.connect(**conn_params)
File "C:\Users\Anouphong\.virtualenvs\project_homecook-l563S6IX\lib\site-packages\psycopg2\__init__.py", line 122, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: connection to server at "localhost" (::1), port 5432 failed: Connection refused (0x0000274D/10061)
Is the server running on that host and accepting TCP/IP connections?
connection to server at "localhost" (127.0.0.1), port 5432 failed: Connection refused (0x0000274D/10061)
Is the server running on that host and accepting TCP/IP connections?
This is my settings.py file in django
DATABASES = {
'default': {
'ENGINE': 'django.contrib.gis.db.backends.postgis',
'NAME': 'database_name',
'USER': 'postgres',
'PASSWORD': '******',
'HOST': 'localhost',
'PORT': '5434',
}
}
Hi, I figured it out. Really stupid mistake. I add two of the Database= {} configuration twice, once at the top of the file and once i the bottom and for got to delete it lol.

This issue is generated for lack of permission.You should give the permission in pg_hba file.
Log into your db user and then play the command psql. The sequensial coammnd is given bellow.
sudo su - postgres
psql
show hba_file;
In my case the output is /var/lib/postgresql/data/pg_hba.conf. Rember this location
\q
ctrl + d # for loging out from postgres user
sudo vim /var/lib/postgresql/data/pg_hba.conf #you can use your prefer text editor
You need to change the file as shown bellow. Just change all method to trust.

Flask Mail is not working inside the container

I have my Flask application that sends mail. I have specified my SMTP server and ports inside the application. This works perfectly fine in my local machine. I want to run this application inside the container. I have exposed the flask's default port 5000 and maps the port with the local machine while running the container. But it fails to send the mail, The error which I am getting is as follows.
Traceback (most recent call last):
File "/root/.local/share/virtualenvs/ATEC-C7cLNkeV/lib/python3.8/site-packages/apscheduler/executors/base.py", line 125, in run_job
retval = job.func(*job.args, **job.kwargs)
File "/ATEC/application/routes.py", line 107, in weeklymail
mail.send(msg)
File "/root/.local/share/virtualenvs/ATEC-C7cLNkeV/lib/python3.8/site-packages/flask_mail.py", line 491, in send
with self.connect() as connection:
File "/root/.local/share/virtualenvs/ATEC-C7cLNkeV/lib/python3.8/site-packages/flask_mail.py", line 144, in __enter__
self.host = self.configure_host()
File "/root/.local/share/virtualenvs/ATEC-C7cLNkeV/lib/python3.8/site-packages/flask_mail.py", line 156, in configure_host
host = smtplib.SMTP_SSL(self.mail.server, self.mail.port)
File "/usr/local/lib/python3.8/smtplib.py", line 1034, in __init__
SMTP.__init__(self, host, port, local_hostname, timeout,
File "/usr/local/lib/python3.8/smtplib.py", line 253, in __init__
(code, msg) = self.connect(host, port)
File "/usr/local/lib/python3.8/smtplib.py", line 339, in connect
self.sock = self._get_socket(host, port, self.timeout)
File "/usr/local/lib/python3.8/smtplib.py", line 1040, in _get_socket
new_socket = socket.create_connection((host, port), timeout,
File "/usr/local/lib/python3.8/socket.py", line 808, in create_connection
raise err
File "/usr/local/lib/python3.8/socket.py", line 796, in create_connection
sock.connect(sa)
TimeoutError: [Errno 110] Operation timed out

OperationalError: could not connect to server: Operation timed out - when trying to change database from sqlite to postresql

I'm following this tutorial to configure my zappa app so I can use AWS lambda functions for my django app. I'm up to "Configure the database" so that's what I'm trying to do. My django app uses postgresql so I'm trying to change my zappa app to postgresql (from the default sqlite). I've successfully created a postgres DB instance on Amazon RDS. The instance setting Publicly accessible is set to Yes.
I've also successfully installed psycopg2 and psycopg2-binary in my zappa app, as well as changing my DB settings:
DATABASES = {
'default': {
'ENGINE': config('DB_ENGINE'),
'NAME': config('DB_NAME'),
'USER': config('DB_USER'),
'PASSWORD': config('DB_PASSWORD'),
'HOST': config('DB_HOST'),
'PORT': '5432',
}
}
However when I perform makemigrations in my zappa app I get the following error:
Traceback (most recent call last):
File "manage.py", line 22, in <module>
execute_from_command_line(sys.argv)
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/core/management/__init__.py", line 364, in execute_from_command_line
utility.execute()
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/core/management/__init__.py", line 356, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/core/management/base.py", line 283, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/core/management/base.py", line 330, in execute
output = self.handle(*args, **options)
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/core/management/commands/makemigrations.py", line 110, in handle
loader.check_consistent_history(connection)
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/migrations/loader.py", line 282, in check_consistent_history
applied = recorder.applied_migrations()
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations
self.ensure_schema()
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 52, in ensure_schema
if self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor()):
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/backends/base/base.py", line 254, in cursor
return self._cursor()
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/backends/base/base.py", line 229, in _cursor
self.ensure_connection()
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
self.connect()
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
self.connect()
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/backends/base/base.py", line 189, in connect
self.connection = self.get_new_connection(conn_params)
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/django/db/backends/postgresql/base.py", line 176, in get_new_connection
connection = Database.connect(**conn_params)
File "/Users/zorgan/Desktop/zappatest/env/lib/python3.6/site-packages/psycopg2/__init__.py", line 130, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: could not connect to server: Operation timed out
Is the server running on host "****-db.**********.us-east-2.rds.amazonaws.com" (14.171.84.91) and accepting
TCP/IP connections on port 5432?
Any idea what the problem is?

You need to open port 5432 on the aws firewall or on the box itself:
Here is a test on that port:
➜ nmap -Pn -p 5432 14.171.84.91
Starting Nmap 7.70 ( https://nmap.org ) at 2018-06-18 17:54 EDT
Nmap scan report for static.vnpt.vn (14.171.84.91)
Host is up.
PORT STATE SERVICE
5432/tcp filtered postgresql