Running wiki-to-print on the server

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Revision as of 15:15, 14 January 2026 by Manetta (talk | contribs)
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Official disclaimer: Many things can happen, 502 errors fly around your ears, wiki-to-print is not a product :) as long as it keeps running we're happy.

BUT...

If you're stuck, this may be of use.

Wiki-to-print as a service

Wiki-to-print is a Flask application that runs in the background as a service, using a systemd service file. 

$ sudo service wiki2print status
$ sudo service wiki2print start
$ sudo service wiki2print stop
$ sudo service wiki2print restart

Debugging

For debugging (on the server)

Stop the wiki2print service: 

$ sudo service wiki2print stop

Then run wiki-to-print manually from the folder where it is installed. First go to this folder: 

$ cd /var/www/wiki-to-print/wiki-to-print/

And then run the application: 

$ make server

And if needed, you can add print statements in the python files to dive deeper into the code.

Where to find the logs?

This shows the logs of the wiki-to-print service: 

$ journalctl -u wiki-to-print

For debugging (through a local installation)

$ git clone ssh://gitea@vvvvvvaria.org:12345/varia/wiki-to-print.git

$ cd wiki-to-print/wiki-to-print/web-interface/

$ make setup

$ make local

jobrunner

MediaWiki comes with a maintenance script called RunJobs.php that writes changes to the database. The job queue is a built-in feature of MediaWiki that is made to increase the performance on large wikis.

On CC we use a script called jobrunner.sh in /var/www/html/wiki/ that is based on: https://www.mediawiki.org/wiki/Manual:Job_queue#Continuous_service

It runs the MediaWiki maintenance script RunJobs.php every 10 seconds.

It is installed on CC and runs in the background as a systemd service, called "jobrunner", which can be used with: 

$ sudo service jobrunner status
$ sudo service jobrunner start
$ sudo service jobrunner stop
$ sudo service jobrunner reload
  • The service is configured at: /etc/systemd/system/jobrunner.service
  • This is an example of the service file:
[Unit]
Description=MediaWiki Job runner

[Service]
ExecStart=/var/www/html/wiki/jobrunner.sh
Nice=10
ProtectSystem=full
User=www-data
OOMScoreAdjust=200
StandardOutput=journal

[Install]
WantedBy=multi-user.target
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