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Demo4 Knative

This is a Repository of sample in order to show autoscalling functionalities

Func

Deploy application and demonstrate autoscalling

Prerequisite

  • Knative metrics
  • The hey load generator installed (go get -u github.com/rakyll/hey)

Demo

Install service:

kubectl apply -f service.yaml

Retrieve your knative istio ingress gateway

kubectl get svc knative-ingressgateway --namespace istio-system

Check your knative application url

kubectl get ksvc

Perfom Test:

curl -H "Host: autoscale-go.default.example.com" "http://af4<REDACTED>.amazonaws.com?sleep=100&prime=10000&bloat=5"

Send traffic:

hey -z 30s -c 50 \
  -host "autoscale-go.default.example.com" \
  "http://af4<REDACTED>?sleep=100&prime=10000&bloat=5" \
  && kubectl get pods

And check new pod created:

kubectl get pods -n default --watch

Remarks

Observe that your deployment will scale down to zero if your function is never used