Migration Playbook: Self-Hosted PostgreSQL (EC2) → AWS Aurora PostgreSQL Serverless v2
Self-Hosted PostgreSQL to AWS Aurora Serverless v2
Eliminate manual database maintenance, replica lag, and storage management by migrating to fully managed AWS Aurora Serverless v2.
Migration Drivers
Why companies migrate away from Self-Hosted PostgreSQL (EC2)
Manual Backup & High Availability Burden
Engineers spending weekends managing Patroni failovers, WAL archiving, and manual disk resizing.
Slow Unpredictable Read Replication
Asynchronous replication lag causing stale reads on analytics and customer reporting replicas.
Fixed Hardware Provisioning
Overpaying for idle peak database instances that cannot scale compute down during off-peak hours.
Execution Sequence
The 4-Phase Zero-Downtime Blueprint
Our structured migration process ensures uninterrupted production uptime, continuous data synchronization, and rollback safety.
Target Aurora Cluster Sizing & Terraform
Provisioning an Aurora PostgreSQL Serverless v2 cluster across 3 Availability Zones with RDS Proxy.
Continuous Replication with AWS DMS
Establishing logical replication to stream live changes from on-prem/EC2 Postgres to Aurora.
Performance Benchmarking & Validation
Running synthetic load tests comparing query execution plans and IOPS latency.
Momentary Maintenance Window Cutover
Pausing write traffic, verifying sequence synchronization, and pointing DNS to RDS Proxy.
Risk Prevention
Pitfalls that derail this migration
Parameter Group Mismatches
Forgetting to copy custom postgresql.conf settings (shared_buffers, work_mem) to the Aurora parameter group.
DMS Primary Key & LOB Truncation
Misconfiguring AWS DMS Large Object (LOB) settings, causing silent truncation of large text/JSON columns.
Unconfigured Connection Pooling
Connecting hundreds of serverless Lambda functions directly to Aurora without AWS RDS Proxy.
Migration FAQs
Frequently asked migration questions
Aurora Serverless v2 scales compute capacity (ACUs) up or down in fractions of a second without interrupting active database transactions.
Yes, Aurora automatically replicates six copies of your data across three Availability Zones with continuous S3 backup.
Zero downtime, zero data loss, senior-only execution
Schedule a strategy call to review your architecture, data volume, and migration timeline with our cloud engineers.