Managing IP address exhaustion for Amazon RDS Proxy
Database Blog
This article explains how to address IP address exhaustion issues with Amazon RDS Proxy by expanding VPC capacity and migrating to new subnets.
- RDS Proxy requires careful IP capacity planning as database connections scale
- IP exhaustion causes increased latency, connection failures, and security patch delays
- AWS alerts via RDS-EVENT-0243 when subnet IP addresses are insufficient
- Solution involves three phases: VPC CIDR expansion, new subnet creation, traffic switching
- Use parallel deployment to minimize downtime during proxy migration
- Gradually transition application traffic service-by-service to new proxy
- Monitor IP utilization with CloudWatch and set proactive capacity alerts
- Consider IPv6 migration as alternative if workload supports it
The article provides step-by-step AWS CLI commands and best practices for managing IP address capacity while maintaining RDS Proxy benefits like connection pooling and IAM authentication.
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