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Fixes numbered list formatting

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Sam O'Dell 2018-07-18 14:16:22 -07:00 committed by GitHub
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serving/samples/autoscale-go/README.md
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@ -16,83 +16,84 @@ go get -d github.com/knative/docs/serving/samples/autoscale-go
Build the application container and publish it to a container registry: Build the application container and publish it to a container registry:
1. Move into the sample directory: 1. Move into the sample directory:
``` ```
cd $GOPATH/src/github.com/knative/docs cd $GOPATH/src/github.com/knative/docs
``` ```
1. Set your preferred container registry: 1. Set your preferred container registry:
``` ```
export REPO="gcr.io/<YOUR_PROJECT_ID>" export REPO="gcr.io/<YOUR_PROJECT_ID>"
``` ```
* This example shows how to use Google Container Registry (GCR). You will need a Google Cloud Project and to enable the [Google Container Registry API](https://console.cloud.google.com/apis/library/containerregistry.googleapis.com). * This example shows how to use Google Container Registry (GCR). You will need a
Google Cloud Project and to enable the
[Google Container Registry API](https://console.cloud.google.com/apis/library/containerregistry.googleapis.com).
1. Use Docker to build your application container: 1. Use Docker to build your application container:
``` ```
docker build \ docker build \
--tag "${REPO}/serving/samples/autoscale-go" \ --tag "${REPO}/serving/samples/autoscale-go" \
--file=serving/samples/autoscale-go/Dockerfile . --file=serving/samples/autoscale-go/Dockerfile .
``` ```
1. Push your container to a container registry: 1. Push your container to a container registry:
``` ```
docker push "${REPO}/serving/samples/autoscale-go" docker push "${REPO}/serving/samples/autoscale-go"
``` ```
1. Replace the image reference with our published image: 1. Replace the image reference with our published image:
``` ```
perl -pi -e \ perl -pi -e \
"s@github.com/knative/docs/serving/samples/autoscale-go@${REPO}/serving/samples/autoscale-go@g" \ "s@github.com/knative/docs/serving/samples/autoscale-go@${REPO}/serving/samples/autoscale-go@g" \
serving/samples/autoscale-go/sample.yaml serving/samples/autoscale-go/sample.yaml
``` ```
## Deploy the Service ## Deploy the Service
1. Deploy the Knative Serving sample: 1. Deploy the Knative Serving sample:
``` ```
kubectl apply -f serving/samples/autoscale-go/sample.yaml kubectl apply -f serving/samples/autoscale-go/sample.yaml
``` ```
1. Find the ingress hostname and IP and export as an environment variable: 1. Find the ingress hostname and IP and export as an environment variable:
``` ```
export SERVICE_HOST=`kubectl get route autoscale-route -o jsonpath="{.status.domain}"` export SERVICE_HOST=`kubectl get route autoscale-route -o jsonpath="{.status.domain}"`
export SERVICE_IP=`kubectl get svc knative-ingressgateway -n istio-system -o jsonpath="{.status.loadBalancer.ingress[*].ip}"` export SERVICE_IP=`kubectl get svc knative-ingressgateway -n istio-system -o jsonpath="{.status.loadBalancer.ingress[*].ip}"`
``` ```
## View the Autoscaling Capabilities ## View the Autoscaling Capabilities
1. Request the largest prime less than 40,000,000 from the autoscale app. Note that it consumes about 1 cpu/sec. 1. Request the largest prime less than 40,000,000 from the autoscale app. Note that it consumes about 1 cpu/sec.
``` ```
time curl --header "Host:$SERVICE_HOST" http://${SERVICE_IP?}/primes/40000000 time curl --header "Host:$SERVICE_HOST" http://${SERVICE_IP?}/primes/40000000
``` ```
1. Ramp up traffic on the autoscale app (about 300 QPS). 1. Ramp up traffic on the autoscale app (about 300 QPS):
``` ```
kubectl delete namespace hey --ignore-not-found && kubectl create namespace hey kubectl delete namespace hey --ignore-not-found && kubectl create namespace hey
``` ```
``` ```
for i in `seq 2 2 60`; do for i in `seq 2 2 60`; do
kubectl -n hey run hey-$i --image josephburnett/hey --restart Never -- \ kubectl -n hey run hey-$i --image josephburnett/hey --restart Never -- \
-n 999999 -c $i -z 2m -host $SERVICE_HOST \ -n 999999 -c $i -z 2m -host $SERVICE_HOST \
"http://${SERVICE_IP?}/primes/40000000" "http://${SERVICE_IP?}/primes/40000000"
sleep 1 sleep 1
done done
``` ```
1. Watch the Knative Serving deployment pod count increase. 1. Watch the Knative Serving deployment pod count increase.
``` ```
kubectl get deploy --watch kubectl get deploy --watch
``` ```
1. Watch the pod traffic ramp up. 1. Watch the pod traffic ramp up.
``` ```
kubectl get pods -n hey --show-all --watch kubectl get pods -n hey --show-all --watch
``` ```
1. Look at the latency, requests/sec and success rate of each pod. 1. Look at the latency, requests/sec and success rate of each pod.
``` ```
for i in `seq 2 2 60`; do kubectl -n hey logs hey-$i ; done for i in `seq 2 2 60`; do kubectl -n hey logs hey-$i ; done
``` ```
## Cleanup ## Cleanup