CODEWITHSUNDEEP
kuberneteskubernetes-ingress
user10386912
user10386912

Reputation:

Kubernetes ingress conditional routing

Is it possible to configure an ingress controller in Kubernetes to route the HTTP requests to a service only if the incoming requests have a certain value for a header?

Example

An HTTP request with following header

X-MY-CUSTOM-HEADER: accepted-value

should be forwarded to service1

An HTTP request with following header

X-MY-CUSTOM-HEADER: invalid-value

should be blocked

If is possible could you detail a bit or point to some documentation as I wasn't able to find documentation for such usecase

Upvotes: 5

Views: 5070

Answers (2)

Green Lei
Green Lei

Reputation: 3412

Traefik 2.0, Istio and Ambassador support Header based routing.

More information from https://discuss.kubernetes.io/t/header-based-ingress-routing/6322

Upvotes: 1

Rico
Rico

Reputation: 61531

If you are using an nginx ingress controller you can do it with a Configuration snippet annotation. Then you can add something like this:

nginx.ingress.kubernetes.io/configuration-snippet: |
  map $http_x_custom_header $not_ok {
      default "1";
      Value1  "0";
      Value2  "0";
      Value3  "0";
  }

  if ($not_ok) {
      return 403; 
  }

Some more info here.

Upvotes: 3

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