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Enabling HTTP Visibility

In order for Hubble to gain HTTP visibility. Cilium must be configured to route HTTP traffic via a Cilium managed Envoy proxy to extract HTTP information.

With CiliumNetworkPolicy

The following CiliumNetworkPolicy will redirect the traffic of all pods on port 80 to the HTTP proxy. In order to not block any non-HTTP traffic, the policy also allows all other traffic. Adjust the policy accordingly if you are using other network policies.

kind: CiliumNetworkPolicy
  name: http-visibility
    matchLabels: {}
  - fromEntities:
    - all
    - ports:
      - port: "80"
        protocol: TCP
        - {}
  - fromEntities:
    - all

All network policies are specific to a namespace. So the policy will have to be imported into each namespace separately.

With Pod Annotations

An alternative to using CiliumNetworkPolicy, pods can be annotated to enable visibility:

kubectl annotate pod foo io.cilium.proxy-visibility="<Ingress/80/TCP/HTTP>"

Important: Visibility via annotations is not compatible with network policies. You cannot use annotations while also using network policies.

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