How do I migrate Drupal to a new host without downtime?

Zero-Downtime Drupal Migration Strategy

Migrating a Drupal site without downtime requires careful orchestration of database synchronization, file transfers, and DNS management. At HostingDuty, we prioritize data integrity and service continuity during all migrations.

Pre-Migration Preparation

Before initiating the move, audit your current Drupal installation. Document all custom modules, themes, and configurations. Ensure your new hosting environment meets Drupal's PHP and database requirements. Check our Drupal hosting requirements for specific versions and extensions.

Database Synchronization

The critical component is keeping the database in sync between old and new hosts. We recommend using database replication tools or setting up a read replica on the new server. This allows you to maintain a live copy of your database while users continue accessing the old site.

For smaller sites, manual synchronization via drush sql-sync works well. For larger installations, consider automated replication tools that maintain real-time sync. Learn more about Drupal database management in our tutorials section.

File Transfer and Configuration

Drupal files (sites/default/files, custom modules, themes) must be transferred completely. Use rsync with delta encoding for efficient transfers. Ensure file permissions match between environments to prevent access issues.

Configure your new Drupal installation with the same settings.php structure. Test all custom modules and themes in a staging environment before going live. Review our Drupal configuration management guide for best practices.

DNS Switch and Final Sync

Lower your DNS TTL to 300 seconds 48 hours before migration. This ensures rapid propagation when you switch. Perform a final database sync, then update DNS records to point to the new host. Monitor for any errors during the transition.

Post-Migration Validation

After switching DNS, verify all site functionality. Check that forms, search, and custom modules work correctly. Monitor error logs and performance metrics. Our Drupal performance monitoring tools help identify issues quickly.

Common Pitfalls

• Not testing in staging environment first
• Forgetting to update hardcoded URLs
• Missing custom modules or themes
• DNS propagation delays

For detailed migration checklists, see our Drupal migration checklist. If you need assistance, our team at HostingDuty provides professional migration services with guaranteed uptime.

Related Resources

• Drupal vs WordPress comparison
• Drupal security best practices
• Drupal caching strategies

We recommend scheduling migrations during low-traffic periods and having a rollback plan ready. Our support team is available 24/7 to assist with any migration challenges you encounter.