I need to migrate production environment from EC2-Classic to VPC. For now I have one Elastic LB with a few EC2 instances behind it. My plan is:
- create a new LB balancer and add VPC instance
- create 2 Route53 records using Weighted Round Robin (http://aws.amazon.com/about-aws/whats-new/2011/05/24/amazon-route53-elb-integration-wrr-ga/), which will point, for instance 90% traffic to the old LB and 10% to new
- if everything going well, we can add more instances to VPC and change Route53 weights
- at the end we'll leave just one DNS record and shutdown old LB
Will it work? Is there better method?