I am trying to run a flask app as a service using uwsgi. But getting an error:
uWSGI process 17078 got Segmentation Fault
Here is what i tried:
manage.py
from flask_script import Manager
from flask_migrate import Migrate, MigrateCommand
from whatsapp_api import ms_crm_whatsapp, db
migrate = Migrate(ms_crm_whatsapp,db)
manager = Manager(ms_crm_whatsapp)
manager.add_command('db',MigrateCommand)
if name == 'main': manager.run()
database.py
from whatsapp_api import db
from sqlalchemy.dialects.postgresql import JSON
# print('db##############',db)
class TempTable(db.Model):
# print('TempTable')
__tablename__ = 'crm_user_chat_data'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String())
case_type = db.Column(db.String())
sub_type = db.Column(db.String())
number = db.Column(db.String())
description = db.Column(db.String())
crm_customer_id = db.Column(db.String())
title = db.Column(db.String())
def __init__(self,name,case_type,number,description,sub_type,crm_customer_id,title):
print('inside __init__')
self.name = name
self.case_type = case_type
self.number = number
self.description = description
self.sub_type = sub_type
self.crm_customer_id = crm_customer_id
self.title = title
def __repr__(self):
print('__repr__',__repr__)
return '<id {}>'.format(self.id)
whatsapp_api.py
from flask import Flask, request, jsonify
import time
import requests
import json
import re
from nltk.chat.util import Chat, reflections
from flask_sqlalchemy import SQLAlchemy
import psycopg2
ms_crm_whatsapp = Flask(__name__)
ms_crm_whatsapp.config["DEBUG"] = True
ms_crm_whatsapp.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
ms_crm_whatsapp.config["SQLALCHEMY_DATABASE_URI"] = 'postgresql://user:user_password@localhost:5432/db_name'
db = SQLAlchemy(ms_crm_whatsapp)
from database import TempTable
con = psycopg2.connect("host=localhost dbname=db_name user=user password=user_password")
cur = con.cursor()
@ms_crm_whatsapp.route('/',methods=['GET','POST'])
def home():
return "<h1> Hello welcome to the world of Flask"
ms_crm_whatsapp.run(host='0.0.0.0' port=3000)
I was running the app like python3 manage.py
wsgi.py
from whatsapp_api import ms_crm_whatsapp
if __name__ == "__main__":
ms_crm_whatsapp.run()
and in the terminal, I tried,
uwsgi --socket 0.0.0.0:3000 --protocol=http -w wsgi:ms_crm_whatsapp
in terminal i getting:
* Starting uWSGI 2.0.18 (64bit) on [Tue Nov 5 17:05:48 2019] compiled with version: 7.4.0 on 05 November 2019 10:27:46 os: Linux-4.15.0-66-generic #75-Ubuntu SMP Tue Oct 1 05:24:09 UTC 2019 nodename: lenovo-v330-kbir machine: x86_64 clock source: unix pcre jit disabled detected number of CPU cores: 8 current working directory: /home/user/python-environments/ms_crm_whatsapp_poc detected binary path: /home/user/python-environments/flask_venv/bin/uwsgi WARNING: you are running uWSGI without its master process manager your processes number limit is 30456 your memory page size is 4096 bytes detected max file descriptor number: 1024 lock engine: pthread robust mutexes thunder lock: disabled (you can enable it with --thunder-lock) uwsgi socket 0 bound to TCP address 0.0.0.0:3000 fd 3 Python version: 3.6.8 (default, Oct 7 2019, 12:59:55) [GCC 8.3.0] Python threads support is disabled. You can enable it with --enable-threads Python main interpreter initialized at 0x55f79717ce50 your server socket listen backlog is limited to 100 connections your mercy for graceful operations on workers is 60 seconds mapped 72920 bytes (71 KB) for 1 cores Operational MODE: single process unable to load configuration from from multiprocessing.semaphore_tracker import main;main(4) /home/user/.local/lib/python3.6/site-packages/psycopg2/init.py:144: UserWarning: The psycopg2 wheel package will be renamed from release 2.8; in order to keep installing from binary please use "pip install psycopg2-binary" instead. For details see: http://initd.org/psycopg/docs/install.html#binary-install-from-pypi. """) !!! uWSGI process 19684 got Segmentation Fault !!! backtrace of 19684 uwsgi(uwsgi_backtrace+0x2a) [0x55f79555a3da] uwsgi(uwsgi_segfault+0x23) [0x55f79555a7c3] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20) [0x7f8abd3ddf20] /home/user/.local/lib/python3.6/site-packages/psycopg2/.libs/./libssl-c0c2ede4.so.1.0.2q(ssl3_cleanup_key_block+0xb) [0x7f8a81ae1cab] /home/user/.local/lib/python3.6/site-packages/psycopg2/.libs/./libssl-c0c2ede4.so.1.0.2q(ssl3_clear+0x16) [0x7f8a81adf5a6] /home/user/.local/lib/python3.6/site-packages/psycopg2/.libs/./libssl-c0c2ede4.so.1.0.2q(tls1_clear+0x9) [0x7f8a81aeb219] /usr/lib/x86_64-linux-gnu/libssl.so.1.1(SSL_new+0x3f2) [0x7f8abe9369e2] /home/user/.local/lib/python3.6/site-packages/psycopg2/.libs/libpq-bd31fe2b.so.5.11(+0x23969) [0x7f8a81d76969] /home/user/.local/lib/python3.6/site-packages/psycopg2/.libs/libpq-bd31fe2b.so.5.11(+0x24fc5) [0x7f8a81d77fc5] /home/user/.local/lib/python3.6/site-packages/psycopg2/.libs/libpq-bd31fe2b.so.5.11(PQconnectPoll+0xb78) [0x7f8a81d61ba8] /home/user/.local/lib/python3.6/site-packages/psycopg2/.libs/libpq-bd31fe2b.so.5.11(+0xfa28) [0x7f8a81d62a28] /home/user/.local/lib/python3.6/site-packages/psycopg2/.libs/libpq-bd31fe2b.so.5.11(PQconnectdb+0x1f) [0x7f8a81d6541f] /home/user/.local/lib/python3.6/site-packages/psycopg2/_psycopg.cpython-36m-x86_64-linux-gnu.so(+0x12b01) [0x7f8a81fb6b01] /home/user/.local/lib/python3.6/site-packages/psycopg2/_psycopg.cpython-36m-x86_64-linux-gnu.so(+0x1388f) [0x7f8a81fb788f] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x1fc402) [0x7f8abdbc4402] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyObject_FastCallDict+0x89) [0x7f8abdc2f169] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyObject_CallFunction_SizeT+0x124) [0x7f8abdc2fb84] /home/user/.local/lib/python3.6/site-packages/psycopg2/_psycopg.cpython-36m-x86_64-linux-gnu.so(+0xc258) [0x7f8a81fb0258] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(PyCFunction_Call+0x96) [0x7f8abdbdb976] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x76e0) [0x7f8abdb4cd80] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17bc6f) [0x7f8abdb43c6f] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17c35c) [0x7f8abdb4435c] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x4ec3) [0x7f8abdb4a563] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17bc6f) [0x7f8abdb43c6f] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(PyEval_EvalCodeEx+0x3e) [0x7f8abdb4472e] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(PyEval_EvalCode+0x1b) [0x7f8abdb454ab] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x1887bd) [0x7f8abdb507bd] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(PyCFunction_Call+0xc1) [0x7f8abdbdb9a1] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x76e0) [0x7f8abdb4cd80] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17bc6f) [0x7f8abdb43c6f] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17c35c) [0x7f8abdb4435c] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x4ec3) [0x7f8abdb4a563] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17aa63) [0x7f8abdb42a63] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17c51e) [0x7f8abdb4451e] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x4ec3) [0x7f8abdb4a563] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17aa63) [0x7f8abdb42a63] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17c51e) [0x7f8abdb4451e] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x4ec3) [0x7f8abdb4a563] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17aa63) [0x7f8abdb42a63] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17c51e) [0x7f8abdb4451e] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x4ec3) [0x7f8abdb4a563] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17aa63) [0x7f8abdb42a63] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyFunction_FastCallDict+0x2d5) [0x7f8abdb44085] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyObject_FastCallDict+0x131) [0x7f8abdc2f211] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyObject_CallMethodIdObjArgs+0xe6) [0x7f8abdc2f576] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(PyImport_ImportModuleLevelObject+0x45c) [0x7f8abda38b2c] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x77ca) [0x7f8abdb4ce6a] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17bc6f) [0x7f8abdb43c6f] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(PyEval_EvalCodeEx+0x3e) [0x7f8abdb4472e] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(PyEval_EvalCode+0x1b) [0x7f8abdb454ab] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x1887bd) [0x7f8abdb507bd] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(PyCFunction_Call+0xc1) [0x7f8abdbdb9a1] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x76e0) [0x7f8abdb4cd80] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17bc6f) [0x7f8abdb43c6f] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17c35c) [0x7f8abdb4435c] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x4ec3) [0x7f8abdb4a563] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17aa63) [0x7f8abdb42a63] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17c51e) [0x7f8abdb4451e] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x4ec3) [0x7f8abdb4a563] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17aa63) [0x7f8abdb42a63] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17c51e) [0x7f8abdb4451e] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(_PyEval_EvalFrameDefault+0x4ec3) [0x7f8abdb4a563] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17aa63) [0x7f8abdb42a63] /usr/lib/x86_64-linux-gnu/libpython3.6m.so.1.0(+0x17c51e) [0x7f8abdb4451e] end of backtrace *
