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Migration Best Practices and Troubleshooting

This guide covers best practices, common issues, and troubleshooting steps for successful migrations to Elestio.

Pre-Migration Best Practices​

Planning and Preparation​

1. Assessment and Planning​

  • Inventory your data - Catalog all databases, applications, and dependencies
  • Assess compatibility - Verify your software is supported by Elestio
  • Plan migration order - Dependencies first, then applications
  • Schedule maintenance window - Plan for minimal business impact
  • Backup everything - Create complete backups before starting

2. Version Compatibility​

  • Use matching versions - Deploy the same software version on Elestio as your source
  • Check for updates - Consider upgrading after successful migration
  • Review breaking changes - Understand version differences if upgrade is needed
  • Test compatibility - Use staging environment for version testing

3. Resource Planning​

  • Calculate storage needs - Ensure sufficient disk space on target
  • Plan for growth - Add buffer space for future expansion
  • Consider bandwidth - Large migrations may take significant time
  • Monitor resource usage - Track CPU, memory, and network during migration

Security Considerations​

Access Control​

  • Secure credentials - Use strong passwords and limit access
  • Network security - Ensure secure connections during migration
  • Data encryption - Enable encryption in transit and at rest
  • Access logging - Monitor who performs migration activities

Data Protection​

  • Backup validation - Verify backups are complete and restorable
  • Data masking - Consider masking sensitive data in test environments
  • Compliance requirements - Ensure migration meets regulatory needs
  • Audit trails - Maintain records of migration activities

Migration Process Best Practices​

During Data Export​

Database Exports​

  • Use consistent snapshots - Ensure point-in-time consistency
  • Verify export completeness - Check record counts and file sizes
  • Test export files - Validate exports can be restored
  • Document export settings - Record custom configurations used

Application Data​

  • Include configuration files - Export all necessary config files
  • Preserve file permissions - Maintain correct file ownership and permissions
  • Export mounted volumes - Include all persistent data volumes
  • Archive logs - Preserve important application logs

During Migration​

Monitoring and Validation​

  • Monitor progress continuously - Watch migration logs in real-time
  • Validate connections - Ensure stable connectivity throughout
  • Check for errors - Address issues immediately when they occur
  • Document problems - Keep record of issues and resolutions

Performance Optimization​

  • Optimize network - Use high-bandwidth connections when possible
  • Schedule during off-peak - Minimize impact on production systems
  • Batch large datasets - Break large migrations into smaller chunks
  • Monitor resource usage - Ensure target system can handle the load

Post-Migration Validation​

Data Integrity Checks​

  • Compare record counts - Verify all data was migrated
  • Validate data types - Ensure proper data type conversion
  • Test relationships - Check foreign key constraints and relationships
  • Run data quality checks - Validate business rules and constraints

Application Testing​

  • Functional testing - Verify all features work correctly
  • Performance testing - Compare performance to original system
  • Integration testing - Test connections to other systems
  • User acceptance testing - Have users validate the migrated system

Troubleshooting Common Issues​

Connection Problems​

Database Connection Failures​

Symptoms:

  • Cannot connect to source database
  • Connection timeouts during migration
  • Authentication failures

Solutions:

  1. Verify credentials - Double-check username and password
  2. Check firewall settings - Ensure ports are open
  3. Test network connectivity - Use ping or telnet to test connections
  4. Review database logs - Check for connection limit issues
  5. Update connection strings - Ensure proper format and parameters

Network Issues​

Symptoms:

  • Intermittent connection drops
  • Slow migration speeds
  • Timeouts during large data transfers

Solutions:

  1. Check bandwidth - Ensure sufficient network capacity
  2. Monitor network stability - Look for packet loss or latency issues
  3. Use dedicated connections - Consider VPN or direct connections
  4. Optimize transfer settings - Adjust timeout and retry parameters
  5. Schedule during off-peak - Avoid network congestion

Data Migration Issues​

Incomplete Data Transfer​

Symptoms:

  • Missing records after migration
  • Partial table transfers
  • Truncated data fields

Solutions:

  1. Verify source data - Ensure source is accessible and complete
  2. Check migration logs - Look for error messages or warnings
  3. Compare record counts - Validate before and after counts
  4. Re-run migration - Attempt migration again with corrected settings
  5. Contact support - Get assistance for complex data issues

Data Corruption​

Symptoms:

  • Garbled text or characters
  • Invalid dates or numbers
  • Foreign key constraint violations

Solutions:

  1. Check character encoding - Ensure UTF-8 compatibility
  2. Validate source data - Check for corruption in source system
  3. Review data types - Ensure proper type mapping
  4. Use data validation tools - Run integrity checks
  5. Restore from backup - Start over with verified backup

Application Issues​

Service Startup Failures​

Symptoms:

  • Applications won't start after migration
  • Error messages in application logs
  • Missing dependencies

Solutions:

  1. Check file permissions - Ensure correct ownership and permissions
  2. Verify configurations - Update paths and connection strings
  3. Install dependencies - Add missing libraries or packages
  4. Review environment variables - Update system configurations
  5. Restart services - Use proper startup sequence

Performance Issues​

Symptoms:

  • Slow application response
  • High resource usage
  • Database query timeouts

Solutions:

  1. Optimize database indexes - Rebuild or create missing indexes
  2. Tune configuration - Adjust memory and connection settings
  3. Monitor resource usage - Check CPU, memory, and disk I/O
  4. Scale resources - Increase instance size if needed
  5. Review query performance - Optimize slow database queries

Container and Docker Issues​

Container Restart Problems​

If you encounter issues after migration, try these container management commands:

Stop and Rebuild Containers​

docker-compose down
docker-compose up -d --build

Check Container Status​

docker-compose ps

View Container Logs​

docker-compose logs [service_name]

Common Container Issues​

Volume Mount Problems​

Symptoms:

  • Data not persisting between restarts
  • Permission denied errors
  • Missing files or directories

Solutions:

  1. Check volume mappings - Verify correct paths in docker-compose
  2. Set proper permissions - Ensure container user can access volumes
  3. Verify mount points - Check that directories exist
  4. Use absolute paths - Avoid relative paths in volume definitions

Recovery Procedures​

Migration Rollback​

If migration fails or causes issues:

  1. Stop new services - Immediately stop Elestio services
  2. Restore original system - Ensure original system is still functional
  3. Analyze failure - Review logs to understand what went wrong
  4. Correct issues - Fix identified problems before retry
  5. Test corrections - Validate fixes in staging environment
  6. Re-attempt migration - Start migration process again

Data Recovery​

If data is lost or corrupted:

  1. Restore from backup - Use pre-migration backups
  2. Incremental recovery - Restore only missing or corrupted data
  3. Validate restored data - Check integrity after restoration
  4. Update applications - Ensure applications work with restored data

Support and Assistance​

When to Contact Support​

Contact Elestio support when you encounter:

  • Repeated migration failures - Multiple unsuccessful attempts
  • Complex data issues - Unusual data types or structures
  • Performance problems - Significant degradation after migration
  • Version incompatibilities - Software version conflicts
  • Large-scale migrations - Migrations requiring special handling

Information to Provide​

When contacting support, include:

  • Migration type - Database, application, or custom service
  • Error messages - Complete error logs and messages
  • System specifications - Source and target system details
  • Data size - Approximate size of data being migrated
  • Timeline requirements - Any deadline or urgency factors

Support Resources​

  • Create Support Ticket - Direct assistance from our team
  • Community Forums - Connect with other Elestio users
  • Documentation Updates - Check for latest migration guides
  • Video Tutorials - Visual guides for common migration scenarios

Success Metrics​

Migration Success Indicators​

A successful migration should demonstrate:

  • ✅ Complete data transfer - All records migrated successfully
  • ✅ Data integrity maintained - No corruption or loss
  • ✅ Applications functioning - All features work as expected
  • ✅ Performance maintained - Similar or better performance
  • ✅ Security preserved - All security measures in place
  • ✅ User acceptance - Users can work normally

Post-Migration Monitoring​

Continue monitoring for:

  • System performance - CPU, memory, and disk usage
  • Application errors - Log monitoring and alerting
  • User feedback - Gather input on system functionality
  • Data consistency - Ongoing validation of data integrity
  • Backup success - Ensure new backup systems are working

Continuous Improvement​

Learning from Migrations​

  • Document lessons learned - Record what worked and what didn't
  • Update procedures - Improve processes based on experience
  • Share knowledge - Help team members with similar migrations
  • Refine timing estimates - Better plan future migrations
  • Optimize tooling - Improve automation and efficiency