pretix¶
pretix is an open source ticketing solution. It is written in Django and can be highly customized for the process of ticket sales.
Note
For this guide you should be familiar with the basic concepts of
Python and its package manager pip
License¶
All relevant legal information can be found here
Prerequisites¶
You’ll need your MySQL credentials. Get them with my_print_defaults:
[isabell@stardust ~]$ my_print_defaults client
--default-character-set=utf8mb4
--user=isabell
--password=MySuperSecretPassword
[isabell@stardust ~]$
Your URL needs to be setup:
[isabell@stardust ~]$ uberspace web domain list
isabell.uber.space
[isabell@stardust ~]$
Note
pretix uses Redis to manage background tasks, so it install it using the default configuration.
Installation¶
Download & Install¶
Install pretix using the python package manager. Be sure to replace the pseudo branch number release/6.6.x here with the latest release branch from the Github repository at https://github.com/pretix/pretix/branches/active:
[isabell@stardust ~]$ pip3.9 install pretix==4.16.0 gunicorn --user
[...]
Running setup.py install for mt-940 ... done
Running setup.py install for vobject ... done
Running setup.py install for vat-moss ... done
[...]
Successfully installed BeautifulSoup4-4.11.2 Django-3.2.18 Pillow-9.4.0 PyJWT-2.6.0 PyPDF2-2.12.1 amqp-5.1.1 arabic-reshaper-3.0.0 asgiref-3.6.0 async-timeout-4.0.2 attrs-22.2.0 babel-2.11.0 billiard-3.6.4.0 bleach-5.0.1 cbor2-5.4.6 [...]
[isabell@stardust ~]$
Also, you need to create an extra data folder:
[isabell@stardust ~]$ mkdir ~/pretix_data
[isabell@stardust ~]$
Configuration¶
Now you need to set up the configuration, create the file ~/.pretix.cfg and insert the following content:
Warning
Be sure, to replace all values with correct data of your own Uberspace account!
[pretix]
instance_name=Isabells pretix
url=https://isabell.uber.space
currency=EUR
datadir=/home/isabell/pretix_data
trust_x_forwarded_proto=on
[database]
backend=mysql
name=isabell_pretix
user=isabell
password=MySuperSecretPassword
host=localhost
[celery]
broker=redis+socket:///home/isabell/.redis/sock
backend=redis+socket:///home/isabell/.redis/sock
[mail]
from=isabell@uber.space
host=stardust.uberspace.de
user=isabell@uber.space
password=MySuperSecretPassword
port=587
tls=on
Create database¶
Run this code to create the database <username>_pretix in MySQL:
[isabell@stardust ~]$ mysql -e "CREATE DATABASE ${USER}_pretix DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;"
[isabell@stardust ~]$
You will also need to install a mysqlclient package:
[isabell@stardust ~]$ pip3.9 install mysqlclient --user
[...]
Successfully installed mysqlclient-1.3.13
[isabell@stardust ~]$
Initialize database¶
Initialize the pretix database tables and generate the static files:
[isabell@stardust ~]$ python3.9 -m pretix migrate
Operations to perform:
Apply all migrations: auth, badges, banktransfer, contenttypes, oauth2_provider, otp_static, otp_totp, paypal, pretixapi, pretixbase, pretixdroid, pretixhelpers, pretixmultidomain, sendmail, sessions, stripe, ticketoutputpdf
Running migrations:
Applying contenttypes.0001_initial... OK
Applying contenttypes.0002_remove_content_type_name... OK
Applying auth.0001_initial... OK
Applying auth.0002_alter_permission_name_max_length... OK
Applying auth.0003_alter_user_email_max_length... OK
Applying auth.0004_alter_user_username_opts... OK
Applying auth.0005_alter_user_last_login_null... OK
[...]
[isabell@stardust ~]$ python3.9 -m pretix rebuild
[...]
File “/home/jupretix/.local/lib/python3.9/site-packages/django/contrib/sites/locale/be/LC_MESSAGES/django.po” is already compiled and up to date.
File “/home/jupretix/.local/lib/python3.9/site-packages/django/contrib/sites/locale/id/LC_MESSAGES/django.po” is already compiled and up to date.
File “/home/jupretix/.local/lib/python3.9/site-packages/django/contrib/sites/locale/it/LC_MESSAGES/django.po” is already compiled and up to date.
processing file django.po in /home/jupretix/.local/lib/python3.9/site-packages/django/contrib/sites/locale/sl/LC_MESSAGES
processing language es
processing language tr
processing language uk
954 static files copied to '/home/jupretix/.local/lib/python3.9/site-packages/pretix/static.dist', 970 post-processed.
Compressing... done
Compressed 28 block(s) from 547 template(s) for 1 context(s).
[isabell@stardust ~]$
Web Backend¶
Note
Pretix is running on port 9000.
To make the application accessible from the outside, configure a web backend:
[isabell@stardust ~]$ uberspace web backend set / --http --port <port>
Set backend for / to port <port>; please make sure something is listening!
You can always check the status of your backend using "uberspace web backend list".
[isabell@stardust ~]$
Service¶
Finally, you should set up a service that keeps pretix alive while you are gone. Therefor create the file ~/etc/services.d/pretix.ini with the following content:
[program:pretix]
command=gunicorn --reload --preload --bind 0.0.0.0:9000 --workers 2 pretix.wsgi --name pretix --max-requests 1200 --max-requests-jitter 50
directory=%(ENV_HOME)s/pretix_data
autostart=true
autorestart=true
stopsignal=INT
[program:pretix_worker]
command=celery -A pretix.celery_app worker -l info --concurrency 1
directory=%(ENV_HOME)s/pretix_data
autostart=true
autorestart=true
stopsignal=INT
After creating the configuration, tell supervisord to refresh its configuration and start the service:
[isabell@stardust ~]$ supervisorctl reread
SERVICE: available
[isabell@stardust ~]$ supervisorctl update
SERVICE: added process group
[isabell@stardust ~]$ supervisorctl status
SERVICE RUNNING pid 26020, uptime 0:03:14
[isabell@stardust ~]$
If the two services are not in state RUNNING, check your configuration.
Cronjob¶
Create a new cronjob using crontab -e:
18,48 * * * * cd ~/pretix_data && python -m pretix runperiodic
Accessing pretix¶
Now point your Browser to your installation URL https://isabell.uber.space. You will find the administration panel at https://isabell.uber.space/control.
Use admin@localhost as username and admin as password for your first login. You should change this password immediately after login!
Updates¶
Note
Check the update feed regularly to stay informed about the newest version.
If there is a new version available, install the new version like so:
[isabell@stardust ~]$ pip3.9 install pretix==4.16.0
[isabell@stardust ~]$
Then re-run the Initialize database steps and restart the service like so:
[isabell@stardust ~]$ python3.9 -m pretix migrate
[isabell@stardust ~]$ python3.9 -m pretix rebuild
[isabell@stardust ~]$ supervisorctl restart pretix
[isabell@stardust ~]$
Tested with pretix 2.1.0 and Uberspace 7.1.15.0
Written by: ezra <ezra@posteo.de>, luto <m@luto.at>This guide was written with the help of a former text on “bullshit”, thanks to Nathan.