Django can't get access to sqlite3 database

The “attempt to write a readonly database” error typically occurs when the user running the Gunicorn process doesn’t have write permissions on the SQLite database file. Since you mentioned that you are using the one-click install option for Django on Ubuntu 14.04, it’s possible that this issue is related to file permissions. Here’s how to address it:

1. Check the User Running Gunicorn:

   First, you should check which user is running the Gunicorn process. You can do this by examining the systemd service unit file for Gunicorn:

sudo systemctl cat gunicorn

Look for the `User` and `Group` directives in the output. By default, Gunicorn may be running as a user like `www-data`.

2. Check Permissions:

   Ensure that the SQLite database file and the directory containing it have the correct permissions. You should grant write permissions to the user running Gunicorn. Replace your_database.db with the actual name of your database file:

sudo chown www-data:www-data /path/to/your/database/your_database.db

Additionally, make sure that the parent directory of your database file also has the correct permissions:

sudo chown www-data:www-data /path/to/your/database/

This ensures that both the database file and its containing directory are writable by the user running Gunicorn.

3. Restart Gunicorn and Nginx:

   After changing permissions, restart Gunicorn and Nginx to apply the changes:

sudo systemctl restart gunicorn 
sudo systemctl restart nginx