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queue-proxy is missing in kserve v0.7

See original GitHub issue

/kind question

What steps did you take and what happened: I’ve installed kserve 0.7 following this quide and created test inference service:

apiVersion: "serving.kserve.io/v1beta1"
kind: "InferenceService"
metadata:
  name: "sklearn-iris"
spec:
  predictor:
    sklearn:
      storageUri: "gs://kfserving-samples/models/sklearn/iris"

What did you expect to happen: I expect to see queue-proxy sidekick but it doesn’t exist:

$ kubectl get pods sklearn-iris-predictor-default-67b48cd746-k7wtp -o jsonpath='{.spec.containers[*].name}'                                                       
kserve-container

AFAIK, it’s part of Knative project but queue-proxy sidekick is exists by default in v0.5.1 kfserving version:

$ kubectl get pods sklearn-iris-predictor-default-00002-deployment-5f464c78c89jqvc -o jsonpath='{.spec.containers[*].name}'
kfserving-container queue-proxy

Environment:

Istio Version: 1.8.5
Knative Version: v0.25.0
KFServing Version: v0.7
Kubeflow version: -
Kfdef:[k8s_istio/istio_dex/gcp_basic_auth/gcp_iap/aws/aws_cognito/ibm]
Minikube version: -
Kubernetes version: (use kubectl version):

> kubectl version
Client Version: version.Info{Major:"1", Minor:"19", GitVersion:"v1.19.7", GitCommit:"1dd5338295409edcfff11505e7bb246f0d325d15", GitTreeState:"clean", BuildDate:"2021-01-13T13:23:52Z", GoVersion:"go1.15.5", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"20", GitVersion:"v1.20.5", GitCommit:"6b1d87acf3c8253c123756b9e61dac642678305f", GitTreeState:"clean", BuildDate:"2021-03-18T01:02:01Z", GoVersion:"go1.15.8", Compiler:"gc", Platform:"linux/amd64"}