Database connection errors in Mautic can disrupt system operations. This guide provides detailed steps to troubleshoot and resolve database connection issues.

  1. Verify Database Credentials:
    • Check that the database credentials are correctly set in Mautic’s configuration file (app/config/local.php):
    'db_driver' => 'pdo_mysql',
    'db_host' => 'localhost',
    'db_port' => '3306',
    'db_name' => 'mautic_db',
    'db_user' => 'your_db_user',
    'db_password' => 'your_db_password',
  2. Test Database Connection:
    • Use a command-line tool like mysql to test the connection:
    mysql -u your_db_user -p your_db_password -h localhost -D mautic_db
    • Ensure that the connection is successful and the database server is operational.
  3. Review Server Logs:
    • Check server logs in var/logs/ for any errors related to database connectivity. Look for error messages indicating connection issues.
  4. Check Network Configuration:
    • Verify that network settings or firewalls are not blocking database access. Ensure that the database server is reachable from Mautic’s server.
  5. Restart Services:
    • Restart web and database services to resolve temporary issues. Use the following commands:
    sudo systemctl restart apache2 sudo systemctl restart mysql

By following these steps, you can effectively troubleshoot and resolve database connection errors in Mautic.