12.9. Deploying an egress router pod in DNS proxy mode

Procedure

1. Create an egress router pod.

2. Create a service for the egress router pod:

   1. Create a file named egress-router-service.yaml that contains the following YAML. Set spec.ports to the list of ports that you defined previously for the EGRESS_DNS_PROXY_DESTINATION environment variable.

      apiVersion: v1
      kind: Service
      metadata:
        name: egress-dns-svc
      spec:
        ports:
          ...
        type: ClusterIP
        selector:
          name: egress-dns-proxy

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      For example:

      apiVersion: v1
      kind: Service
      metadata:
        name: egress-dns-svc
      spec:
        ports:
        - name: con1
          protocol: TCP
          port: 80
          targetPort: 80
        - name: con2
          protocol: TCP
          port: 100
          targetPort: 100
        type: ClusterIP
        selector:
          name: egress-dns-proxy

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   2. To create the service, enter the following command:

      $ oc create -f egress-router-service.yaml

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      Pods can now connect to this service. The connections are proxied to the corresponding ports on the external server, using the reserved egress IP address.