Custom Maintenance Page for ALB on 502 error

Question

I am using ALB with frontend and backend apps deployed on EKS.
When I take service down for maintenance ; I need to show some nice maintenance page on UI instead of "502 Bad Gateway" and other error code.
How to do that.?? Pls help me with some inputs

Answer

Hello,

Since you mentioned ALB, I assume you are using the AWS Loadbalancer Controller as your Ingress provider.

You can use [fixed-response-actions](https://docs.aws.amazon.com/elasticloadbalancing/latest/application/load-balancer-listeners.html#fixed-response-actions) feature of the ALB to show custom HTML responses for specific HTTP response codes.

Please look at the sample Ingress manifest shown in this [documentation](https://kubernetes-sigs.github.io/aws-load-balancer-controller/v2.2/guide/ingress/annotations/#actions) to understand how to set fixed-response actions in your Ingress manifest.

I hope this answers your question!

Custom Maintenance Page for ALB on 502 error

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