ExternalService: ExternalService and ZoneEgress - Policy

ExternalService and ZoneEgress

In scenarios when traffic to external services needs to be sent through a unique set of hosts you will configure ZoneEgress.

For example when there is:

disabled passthrough mode
ZoneEgress deployed
ExternalService configuration that allows communicating with https://example.com.

When application makes a request to https://example.com, it will be first routed to ZoneEgress and then to https://example.com. You can completely block your instances to communicate to things outside the mesh by disabling passthrough mode. In this setup, applications will only be able to communicate with other applications in the mesh or external-services via the ZoneEgress.

The ExternalService with the same kuma.io/service name cannot mix dns names and IP addresses of the endpoint. Example:

  ---
  type: ExternalService
  mesh: default
  name: example-1
  tags:
    kuma.io/service: example
    kuma.io/protocol: tcp
  networking:
    address: example.com:443
  ---
  type: ExternalService
  mesh: default
  name: example-2
  tags:
    kuma.io/service: example
    kuma.io/protocol: tcp
  networking:
    address: 192.168.0.1:443

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The above configuration is incorrect and configuration generation will fail.

Configuration

apiVersion: kuma.io/v1alpha1
kind: ExternalService
metadata:
  name: example
  namespace: kuma-demo
  labels:
    kuma.io/mesh: default
spec:

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type: ExternalService
mesh: default
name: example
tags:
  kuma.io/service: example
  kuma.io/protocol: tcp
networking:
  address: example.com:443
  tls:
    enabled: false

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Please adjust konnect_mesh_control_plane.my_meshcontrolplane.id and konnect_mesh.my_mesh.name according to your current configuration.

resource "konnect_external_service" "example" {
  provider = konnect-beta
  type = "ExternalService"
  name = "example"
  tags = {
    kuma.io/service = "example"
    kuma.io/protocol = "tcp"
  }
  networking = {
    address = "example.com:443"
    tls = {
      enabled = "false"
    }
  }
  labels   = {
  "kuma.io/mesh" = konnect_mesh.my_mesh.name
  }
  cp_id    = konnect_mesh_control_plane.my_meshcontrolplane.id
  mesh     = konnect_mesh.my_mesh.name
}

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External Service

ExternalService and ZoneEgress

Configuration

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