How to add Celery, Celerybeat and Redis to a Django website.
Install
Redis-server
sudo apt install redis-server
Python packages
In your python environment
pip install redis celery[redis] django-celery-beat
Celery
add to settings.py
INSTALLED_APPS += [
'django_celery_beat',
]
and
CELERY_BROKER_URL = 'redis://localhost:6379'
CELERY_RESULT_BACKEND = 'redis://localhost:6379'
to /project/webbapp/__init__.py add
from .celery import app as celery_app
__all__ = ("celery_app",)
add a celery.py to /project/webbapp/ with
import os
from celery import Celery
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "webbapp.settings")
app = Celery("webbapp")
app.config_from_object("django.conf:settings", namespace="CELERY")
app.autodiscover_tasks()
Development
redis-server
redis-cli ping
celery -A webapp worker -l info
celery -A webapp beat -l info -S django
Production
sudo nano /etc/redis/redis.conf
change "supervised no" to "supervised systemd"
sudo systemctl enable redis-server.service
sudo systemctl daemon-reload
sudo apt install supervisor
In /etc/supervisor/conf.d add two new files
celery.conf
[program:celery]
directory=/project/webapp
command=/project/webbapp/env/bin/celery -A webapp worker --loglevel=INFO
autostart=true
autorestart=true
startsecs=10
stopwaitsecs = 600
celerybeat.conf
[program:celerybeat]
directory=/project/webapp
command=/project/webbapp/env/bin/celery -A webbapp beat -S django --loglevel=INFO
autostart=true
autorestart=true
startsecs=10
run the two commands
sudo supervisorctl start all
sudo supervisorctl status all
References:
https://docs.celeryq.dev/en/stable/getting-started/introduction.html#installation
https://docs.celeryq.dev/en/stable/getting-started/backends-and-brokers/redis.html
https://docs.celeryq.dev/en/stable/django/first-steps-with-django.html
https://docs.celeryq.dev/en/stable/userguide/daemonizing.html
https://github.com/celery/celery/blob/master/extra/supervisord/celeryd.conf
https://github.com/celery/celery/blob/master/extra/supervisord/celerybeat.conf
"Mead and chill" a metheglin mead by Oscfr
Mead and chill
Type: Metheglin, mead spiced with chili
ABV: 11 %
Flavor: Sweet, chili
My rating: 3.5 / 5
What is metheglin?
According to Wikipedia:
Metheglin: Metheglin is traditional mead with herbs or spices added. Some of the most common metheglins are ginger, tea, orange peel, nutmeg, coriander, cinnamon, cloves or vanilla. Its name indicates that many metheglins were originally employed as folk medicines. The Welsh word for mead is medd, and the word "metheglin" derives from meddyglyn, a compound of meddyg, "healing" + llyn, "liquor".
How to make metheglin?
You can find my recipe of metheglin here.
Change Gitlab password
There's two alternative ways.
Both alternatives requires terminal or ssh to the server.
Alternative 1
Tested by me on a Raspberry Pi.
gitlab-rails console production
user = User.where(id: 1).first
user.password = 'your secret'
user.password_confirmation = 'your secret'
user.save
exit
How to setup GitLab on a Raspberry Pi you can read about here.
Alternative 2
The official docs way.
gitlab-rake "gitlab:password:reset[root]"
References:
Alternative 1: https://stackoverflow.com/questions/55747402/docker-gitlab-change-forgotten-root-password
Alternative 2: https://docs.gitlab.com/ee/security/reset_user_password.html
Yubico Yubikey 5C NFC setup on Ubuntu 21.04
TL;DR Terminal commands for Yubikey 5C NFC setup on Ubuntu 21.04
sudo add-apt-repository ppa:yubico/stable && sudo apt-get update
sudo apt install yubikey-manager
sudo apt install yubikey-personalization-gui
sudo apt install libpam-yubico
sudo apt install libpam-u2f
Associating the U2F Key(s) With Your Account
Insert your U2F Key
mkdir -p ~/.config/Yubico
pamu2fcfg > ~/.config/Yubico/u2f_keys
Touch the metal contact to confirm the association.
Backup devices
Insert your backup U2F Key
pamu2fcfg -n >> ~/.config/Yubico/u2f_keys
Touch the metal contact to confirm the association.
Require for Sudo
In /etc/pam.d/sudo below “@include common-auth” add
auth required pam_u2f.so
Require for Login
In /etc/pam.d/gdm-password below @include common-auth
auth required pam_u2f.so
References:
[1]:Installing Yubico Software on Linux Visited: 10-12-2021
[2]:Ubuntu Linux Login Guide - U2F Visited: 10-12-2021
