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import re
import fileinput

import os, fnmatch
import glob
from pathlib import Path


# https://stackoverflow.com/questions/41571281/easy-way-to-set-on-delete-across-entire-application
# https://stackoverflow.com/questions/11898998/how-can-i-write-a-regex-which-matches-non-greedy

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See:

• https://www.digitalocean.com/community/tutorials/how-to-enable-sftp-without-shell-access-on-ubuntu-16-04

Notes:

This is an example tree of the SFTP directories and the REQUIRED ownership

• /path -> root
• /path/to -> root

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First server

List volumes

docker volume ls

Inspect volume

docker volume inspect 

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Production Checklist

• Create droplet
• Create and attach volume to the droplet
• Docker compose config for production
• Docker compose restart policies
• Point docker volumes to Digital Ocean volume
• Passwords creation and management using environmen variables or .env file
• Django settings for production using environment variables
• Disable DEBUG mode

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Utility commands

Generate distribution tarball

python setup.py sdist

Installing a distribution from tarball

pip install my_tarball.tar.gz

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Enable SFTP for a different user a file system

https://www.digitalocean.com/community/tutorials/how-to-enable-sftp-without-shell-access-on-ubuntu-16-04

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NGINX Notes

Config files

Avoid processing unknown or not allowed hosts and prevent host spoofing

• See: https://stackoverflow.com/a/47851675/4873750
• See: http://nginx.org/en/docs/http/request_processing.html#how_to_prevent_undefined_server_names

# Avoid passing unknown or not allowed hosts

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General

print() and logger.debug() does not the logs in the console, either use logger.info(), logger.warning(), logger.error()

Celery

Always check the init.py file of the app that initializes celery, it MUST contain this:

• celery/celery#4296 (comment)

Otherwise tasks uses infinite time 😫

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Useful Links

• https://docs.djangoproject.com/en/3.0/releases/2.0/

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Sunset of Python 2

• https://www.python.org/doc/sunset-python-2/

Porting Guides

• https://docs.python.org/3/howto/pyporting.html
• https://stxnext.com/blog/2019/04/16/python-3-migration-guide/
• https://python3statement.org/practicalities/
• https://docs.djangoproject.com/en/1.11/topics/python3