Collecting Istio Metrics for TCP Services in AKS

istio-aks.sh

random=$RANDOM

# Create AKS Cluster
az aks create -g "osm-rg-$random" -n "osm-aks-$random" --enable-managed-identity --node-count 1 --enable-addons monitoring --enable-msi-auth-for-monitoring  --generate-ssh-keys --attach-acr "osmacr$random"

# Connect to AKS Cluster in Local Environment
az aks get-credentials --resource-group "osm-rg-$random" --name "osm-aks-$random"

# Install istio 1.15
istioctl install --set profile=demo -y

kubectl label namespace default istio-injection=enabled

# Deploy Sample App 

curl -f https://raw.githubusercontent.com/istio/istio/release-1.16/samples/bookinfo/platform/kube/bookinfo.yaml > bookinfo.yaml

kubectl apply -f bookinfo.yaml

kubectl exec "$(kubectl get pod -l app=ratings -o jsonpath='{.items[0].metadata.name}')" -c ratings -- curl -sS productpage:9080/productpage | grep -o "<title>.*</title>"

# Deploy Ratings v2

curl -f https://raw.githubusercontent.com/istio/istio/release-1.16/samples/bookinfo/platform/kube/bookinfo-ratings-v2.yaml > ratingsv2.yaml

kubectl apply -f ratingsv2.yaml

# Deploy Mongodb

curl -f https://raw.githubusercontent.com/istio/istio/release-1.16/samples/bookinfo/platform/kube/bookinfo-db.yaml > mongodb.yaml

kubectl apply -f mongodb.yaml

# Create destination rules 
curl -f https://raw.githubusercontent.com/istio/istio/release-1.16/samples/bookinfo/networking/destination-rule-all.yaml > destination-rule-all.yaml 

kubectl apply -f destination-rule-all.yaml 

# Create virtual service ratings 

curl -f https://raw.githubusercontent.com/istio/istio/release-1.16/samples/bookinfo/networking/virtual-service-ratings-db.yaml > virtual-service-ratings-db.yaml

kubectl apply -f virtual-service-ratings-db.yaml


# Gateway 

kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.16/samples/bookinfo/platform/kube/bookinfo.yaml
kubectl apply -f https://raw.githubusercontent.com/istio/istio/release-1.16/samples/bookinfo/networking/bookinfo-gateway.yaml

echo "waiting for public ip address..."
timeout 10s bash -c 'until kubectl get service/istio-ingressgateway -n istio-system --output=jsonpath='{.status.loadBalancer}' | grep "ingress"; do : ; done'

# https://istio.io/latest/docs/setup/getting-started/#determining-the-ingress-ip-and-ports
INGRESS_HOST=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].port}')
GATEWAY_URL=$INGRESS_HOST:$INGRESS_PORT

curl http://"$GATEWAY_URL/productpage" #http://20.85.173.59/productpage

# Verify Metrics are generated and collected 
istioctl dashboard prometheus # Graph -> istio_tcp_connections_opened_total -> Execute