How do I create an IP whitelist in DigitalOcean Kubernetes clusters?

  • request.headers[“x-real-ip”] doesn’t apppear to have the real external ip address
  • DO firewall is attached to the K8s cluster but is already whitelisted to internal ips only as the load balancer only has access to the cluster
  • can’t attach a DO firewall to the load balancer

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Hi there,

One way I can think that you can achieve this is to use an ingress controller like nginx.

Expose the nginx ingress controller as a ‘LoadBalancer’. Then use service annotations to configure the nginx whitelist per the docs here.

This will allow you to manage traffic more fine grained via your ingress controller and ingress rules.

Hope this helps!


John Kwiatkoski Senior Developer Support Engineer