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

Zero-Downtime Migration Strategy

At HostingDuty, we prioritize application availability during infrastructure changes. Migrating a Laravel application requires a coordinated approach involving DNS management, database synchronization, and application deployment. The goal is to minimize or eliminate service interruption.

Pre-Migration Preparation

Before initiating any migration, we recommend reducing DNS Time-To-Live (TTL) values to 300 seconds (5 minutes) at least 24-48 hours in advance. This ensures that when we update DNS records, the propagation delay is minimized. You can configure TTL settings through our DNS management interface at /dns/ttl-configuration.

Database Synchronization

Laravel applications typically rely on MySQL, PostgreSQL, or MariaDB databases. We implement one of two synchronization methods:

1. Replication: Set up read-replica replication from the source database to the destination. This maintains real-time synchronization. Configure replication using SHOW SLAVE STATUS to monitor lag.

2. Snapshot Sync: For smaller databases, we take a consistent snapshot using mysqldump --single-transaction and transfer it via SFTP or rsync. After transfer, apply the dump to the new host.

For detailed database migration procedures, see our guide at /kb/database-migration-best-practices.

Application Deployment

We deploy the Laravel application to the new HostingDuty server using the same deployment pipeline as your current setup. This includes:

• Pulling the latest code from your repository
• Running composer install --no-dev --optimize-autoloader
• Executing php artisan migrate --force to apply schema changes
• Clearing caches with php artisan cache:clear and php artisan config:clear

Ensure your .env file is configured with the new database credentials and any environment-specific variables. Review our environment configuration best practices at /tutorials/laravel-environment-setup.

DNS Cutover

Once the new environment is fully synchronized and tested, we update the A and CNAME records to point to the new server IP address. With low TTL values, this change propagates quickly. We recommend monitoring DNS propagation using tools like dig or nslookup.

SSL and Cache Considerations

Before redirecting traffic, we ensure SSL certificates are installed and valid on the new host. We use Let's Encrypt integration at HostingDuty for automated certificate management. Additionally, we warm application caches to prevent initial request latency spikes.

For SSL certificate management, refer to our SSL configuration guide at /kb/ssl-certificate-installation.

Rollback Plan

We maintain a rollback strategy throughout the migration. If issues arise, we revert DNS records to the original host within minutes. This ensures business continuity even if unexpected problems occur during the cutover phase.

Post-Migration Verification

After traffic redirection, we monitor application logs, error rates, and performance metrics. We check database connectivity, session handling, and queue processing to confirm full functionality.

For monitoring and troubleshooting, consult our performance monitoring documentation at /glossary/application-monitoring.

Related Resources

• Compare shared hosting vs VPS for Laravel at /compare/shared-vs-vps-laravel
• Learn about Laravel deployment automation at /tutorials/automated-deployment-pipeline
• Understand DNS propagation timelines at /glossary/dns-propagation-time

By following these steps, we ensure your Laravel application migrates smoothly with minimal or no downtime. Our technical team is available to assist with complex migrations at HostingDuty support.