How do you put up a maintenance page for AWS when your instances are behind an ELB?

Question

How do you put up a maintenance page in AWS when you want to deploy new versions of your application behind an ELB? We want to have the ELB route traffic to the maintenance inst

Answer 1

Route53 is not a good solution for this problem. It takes a significant amount of time for DNS entries to expire before the maintenance page shows up (and then it takes that same amount of time before they update after maintenance is complete). I realize that Lambda and CodeDeploy triggers did not exist at the time this question was asked, but I wanted to let others know that Lambda can be used to create a relatively clean solution for this, which I have detailed in a blog post: http://blog.ajhodges.com/2016/04/aws-lambda-setting-temporary.html

The jist of the solution is to subscribe a Lambda function to CodeDeploy events, which replaces your ASG with a micro instance serving a static page in your load balancer during deployments.