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Question

Is it possible to attach a custom firewall rule to a GKE created load balancer?

Here are the default firewall rules created.

I have done something similar in AWS in the past, but I am currently having trouble finding a similar annotation (or other process) to automatically add a cloud firewall rule to a load balancer that is created by GKE.

Example in AWS

Here is an example of what I've done in AWS in the past for context:

  1. Pre-create a Security Group in the AWS console
  2. Create a service of type: Loadbalancer in a kubernetes cluster deployed in AWS with the following annotation: service.beta.kubernetes.io/aws-load-balancer-extra-security-groups: "sg-53fae93f"

What this will do is automatically add the security groups sg-53fae93f to the load balancer created by kubernetes.

Thank you in advance!

Ismail
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