replicated-multi-network.sh

# Preparation
ibmcloud ks cluster config --cluster mc1 
ibmcloud ks cluster config --cluster mc2

export MAIN_CLUSTER_CTX=mc1/bp8qqdkd09bld02i62r0
export REMOTE_CLUSTER_CTX=mc2/bp8qqkmd0rgc3c2i62rg

export MAIN_CLUSTER_NAME=main0
export REMOTE_CLUSTER_NAME=remote0


# Certificate Authority
kubectl create namespace istio-system --context=$MAIN_CLUSTER_CTX 
kubectl create namespace istio-system --context=$REMOTE_CLUSTER_CTX
kubectl create secret generic cacerts --context=$MAIN_CLUSTER_CTX -n istio-system \
    --from-file=samples/certs/ca-cert.pem \
    --from-file=samples/certs/ca-key.pem \
    --from-file=samples/certs/root-cert.pem \
    --from-file=samples/certs/cert-chain.pem
kubectl create secret generic cacerts --context=$REMOTE_CLUSTER_CTX -n istio-system \
    --from-file=samples/certs/ca-cert.pem \
    --from-file=samples/certs/ca-key.pem \
    --from-file=samples/certs/root-cert.pem \
    --from-file=samples/certs/cert-chain.pem

# Cluster and network naming
export MAIN_CLUSTER_NETWORK=network1
export REMOTE_CLUSTER_NETWORK=network2

# Install Istio!
./bin/istioctl --context=${MAIN_CLUSTER_CTX} manifest apply -f istio-main-cluster.yaml
./bin/istioctl manifest apply --context=$REMOTE_CLUSTER_CTX -f istio-remote0-cluster.yaml

# Configure ingress gateways
kubectl --context=${MAIN_CLUSTER_CTX} apply -f cluster-aware-gateway.yaml
kubectl --context=${REMOTE_CLUSTER_CTX} apply -f cluster-aware-gateway.yaml


# Configure cross-cluster service registries
./bin/istioctl x create-remote-secret --context=$MAIN_CLUSTER_CTX --name=main0 -n istio-system | kubectl apply -f - --context=$REMOTE_CLUSTER_CTX
./bin/istioctl x create-remote-secret --context=$REMOTE_CLUSTER_CTX --name=remote0 -n istio-system | kubectl apply -f - --context=$MAIN_CLUSTER_CTX

# Deploy helloworld v2 in the remote cluster
kubectl create --context=${REMOTE_CLUSTER_CTX} namespace sample
kubectl label --context=${REMOTE_CLUSTER_CTX} namespace sample istio-injection=enabled
kubectl create --context=${REMOTE_CLUSTER_CTX} -f samples/helloworld/helloworld.yaml -l app=helloworld -n sample
kubectl create --context=${REMOTE_CLUSTER_CTX} -f samples/helloworld/helloworld.yaml -l version=v2 -n sample

# Deploy helloworld v1 in the main cluster
kubectl create --context=${MAIN_CLUSTER_CTX} namespace sample
kubectl label --context=${MAIN_CLUSTER_CTX} namespace sample istio-injection=enabled
kubectl create --context=${MAIN_CLUSTER_CTX} -f samples/helloworld/helloworld.yaml -l app=helloworld -n sample
kubectl create --context=${MAIN_CLUSTER_CTX} -f samples/helloworld/helloworld.yaml -l version=v1 -n sample

# Deploy sleep to both clusters
kubectl apply --context=${MAIN_CLUSTER_CTX} -f samples/sleep/sleep.yaml -n sample
kubectl apply --context=${REMOTE_CLUSTER_CTX} -f samples/sleep/sleep.yaml -n sample

# Remove v1 Deployment from main cluster
kubectl delete deployment helloworld-v1 -n sample

# Cross-cluster routing in action
kubectl exec --context=${MAIN_CLUSTER_CTX} -it -n sample -c sleep $(kubectl get pod --context=${MAIN_CLUSTER_CTX} -n sample -l app=sleep -o jsonpath='{.items[0].metadata.name}') -- curl helloworld.sample:5000/hello