I'm working on planning a multi-region deployment in AWS and would love to hear any suggestions you might have. Here's what we're considering so far:
- Using Route 53 to redirect traffic based on location.
- Deploying either EC2 or ECS servers.
- Utilizing Document DB or potentially Azure Cosmos DB.
One thing we're hoping to achieve is ensuring that all outbound traffic uses a single IP address. I'm wondering if NAT gateways can help us with this, especially in a multi-region setup. Any input would be greatly appreciated!
1 Answer
For multi-region setups, you’ll probably need to look into cross-region VPC Peering or a Transit Gateway. Here’s a simple approach:
1. Set up your primary VPC with NAT and a static egress IP.
2. Link a secondary VPC without NAT and configure its route tables to direct non-local traffic through your peering connection or Transit Gateway, so it exits through the primary VPC.
Just keep in mind, there might be latency issues, and if you're using this for disaster recovery, losing the primary region could leave you in a tough spot since AWS doesn’t allow moving IPs between regions. So, while it’s doable, I'd think twice about it!
Thanks for the insights! I'll definitely look into those options. Just to clarify, we’re a SaaS tool that lets users connect their databases, so we prefer providing a single IP for them to whitelist. Are there any other alternatives for this situation?