Create a Kubernetes cluster using GKE and install Istio. Upgrade Kiali and install examples. Specific Linux comands to open browsers from command line

install-gke-istio-kiali.sh

#!/bin/bash

echo "[1.0] Check pre-requisites"

# Check gcloud, kubectl, helm, istioctl, envsubst, curl commands
COMMANDS=(gcloud kubectl helm istioctl envsubst curl)
for CMD in "${COMMANDS[@]}"
do
	which "$CMD" >/dev/null 2>&1
	if [ ! "$?" == "0" ]; then
		echo "$CMD command not found. Aborting installation."
		exit 1
	fi
done 

# Check ISTIO_HOME
if [ -z "$ISTIO_HOME" ]; then
	echo "ISTIO_HOME variable not set"
	exit 1
fi

echo "[1.1] Create a Kubernetes cluster based on GKE"

CLUSTER_NAME=$1
if [ -z "$CLUSTER_NAME" ]; then
	INSTALLER=$(basename "$0")
	echo "Cluster name not passed as parameter. "
	echo "i.e. ${INSTALLER} my-cluster"
	exit 1
fi

gcloud container clusters create ${CLUSTER_NAME} \
  --cluster-version latest \
  --num-nodes 6

echo "[1.2] Retrieve cluster credentials"

gcloud container clusters get-credentials ${CLUSTER_NAME}

echo "[1.3] Grant cluster administrator (admin) permissions"

kubectl create clusterrolebinding cluster-admin-binding \
  --clusterrole=cluster-admin \
  --user=$(gcloud config get-value core/account)

echo "[1.4] Install Istio definitions"

cd $ISTIO_HOME
kubectl create namespace istio-system
helm template install/kubernetes/helm/istio-init --name istio-init --namespace istio-system | kubectl apply -f -

CRDS=0
for i in {1..30}
do
	CRDS=$(kubectl get crds | grep 'istio.io\|certmanager.k8s.io' | wc -l)
	if [ ! "$CRDS" == "53" ]; then
		echo "[${i}] Waiting for CRDs..."
		sleep 2
	else
		break
	fi
done

if [ ! "$CRDS" == "53" ]; then
	echo "CRDs have not been created. Aborting installation."
fi

echo "[1.5] Install Istio Demo profile"

helm template install/kubernetes/helm/istio --name istio --namespace istio-system \
  --values install/kubernetes/helm/istio/values-istio-demo.yaml | kubectl apply -f - 

kubectl get pods -n istio-system -w

echo "[1.6.0] Expose the telemetry add-ons"

curl -L https://git.io/fj2rL | kubectl apply -f -

export INGRESS_HOST=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.status.loadBalancer.ingress[0].ip}')

export KIALI_URL="http://${INGRESS_HOST}:15029/kiali"
export PROMETHEUS_URL="http://${INGRESS_HOST}:15030/" 
export GRAFANA_URL="http://${INGRESS_HOST}:15031/"
export JAEGER_URL="http://${INGRESS_HOST}:15032/jaeger"

echo "[1.6.1] Opening URLs"
echo "Warning, xdg-open is a Linux command"

xdg-open ${KIALI_URL} 2>&1 &
xdg-open ${PROMETHEUS_URL} 2>&1 &
xdg-open ${GRAFANA_URL} 2>&1 &
xdg-open ${JAEGER_URL} 2>&1 &

read -rsp $'Press enter to continue...\n'

echo "[1.7.0] Install bookinfo in default namespace"

kubectl label namespace default istio-injection=enabled
kubectl apply -f samples/bookinfo/platform/kube/bookinfo.yaml

kubectl get pods -w

echo "[1.7.1] Expose bookinfo through Ingress"

kubectl apply -f samples/bookinfo/networking/bookinfo-gateway.yaml

export INGRESS_PORT=$(kubectl -n istio-system get service istio-ingressgateway -o jsonpath='{.spec.ports[?(@.name=="http2")].port}') 

xdg-open http://${INGRESS_HOST}:${INGRESS_PORT}/productpage 2>&1 &

read -rsp $'Press enter to continue...\n'

echo "[1.8.0] Upgrade Kiali"

curl -L https://git.io/fjohL | envsubst > $HOME/update-kiali-cr.yaml
bash <(curl -L https://git.io/getLatestKialiOperator) -oiv v1.0.0 --kiali-cr $HOME/update-kiali-cr.yaml

kubectl get pods -n istio-system -w