Deploying the Online Boutique sample application

This guide explains how to install the Online Boutique sample application to demonstrate Cloud Service Mesh. If you haven't installed Cloud Service Mesh, see the installation guide.

Downloading and deploying the sample

To deploy the application, you first need to download the Online Boutique manifests from the anthos-service-mesh-packages repo using kpt. The Online Boutique sample application in the anthos-service-mesh-packages repo is modified from the original set of manifests in the microservices-demo repo. Following best practices, each service is deployed in a separate namespace with a unique service account.

  1. Install kpt if you haven't already:

    gcloud components install kpt

  2. Download the sample using kpt:

    kpt pkg get \
  https://github.com/GoogleCloudPlatform/anthos-service-mesh-packages.git/samples/online-boutique \
  online-boutique

    Expected output

    Package "online-boutique":
Fetching https://github.com/GoogleCloudPlatform/anthos-service-mesh-packages@main
From https://github.com/GoogleCloudPlatform/anthos-service-mesh-packages
* branch            main       -> FETCH_HEAD
Adding package "samples/online-boutique".
Fetched 1 package(s).

  3. Navigate to the online-boutique directory:

    cd online-boutique

  4. Create the namespaces for the application:

    kubectl apply -f kubernetes-manifests/namespaces

    Expected output:

    namespace/ad created
namespace/cart created
namespace/checkout created
namespace/currency created
namespace/email created
namespace/frontend created
namespace/loadgenerator created
namespace/payment created
namespace/product-catalog created
namespace/recommendation created
namespace/shipping created

  5. Deploy the sample to the cluster.

    1. Create the service accounts and deployments:

      kubectl apply -f kubernetes-manifests/deployments

      Expected output:

      serviceaccount/ad created
deployment.apps/adservice created
serviceaccount/cart created
deployment.apps/cartservice created
serviceaccount/checkout created
deployment.apps/checkoutservice created
serviceaccount/currency created
deployment.apps/currencyservice created
serviceaccount/email created
deployment.apps/emailservice created
serviceaccount/frontend created
deployment.apps/frontend created
serviceaccount/loadgenerator created
deployment.apps/loadgenerator created
serviceaccount/payment created
deployment.apps/paymentservice created
serviceaccount/product-catalog created
deployment.apps/productcatalogservice created
serviceaccount/recommendation created
deployment.apps/recommendationservice created
serviceaccount/shipping created
deployment.apps/shippingservice created

    2. Create the services:

      kubectl apply -f kubernetes-manifests/services

      Expected output:

      service/adservice created
service/cartservice created
service/checkoutservice created
service/currencyservice created
service/emailservice created
service/frontend created
service/frontend-external created
service/paymentservice created
service/productcatalogservice created
service/recommendationservice created
service/shippingservice created

    3. Create the service entries:

      kubectl apply -f istio-manifests/allow-egress-googleapis.yaml

      Expected output:

      serviceentry.networking.istio.io/allow-egress-googleapis created
serviceentry.networking.istio.io/allow-egress-google-metadata created

Enabling sidecar auto-injection

To enable auto-injection, you label your namespaces with the default injection labels if the default tag is set up, or with the revision label to your namespace. The label that you add also depends on whether you deployed managed Cloud Service Mesh or installed the in-cluster control plane. The label is used by the sidecar injector webhook to associate injected sidecars with a particular control plane revision.

In-cluster

  1. Use the following command to locate the label on istiod:

    kubectl get deploy -n istio-system -l app=istiod -o \
  jsonpath={.items[*].metadata.labels.'istio\.io\/rev'}'{"\n"}'

    The command outputs the revision label that corresponds to the Cloud Service Mesh version, for example: asm-1233-2

  2. Apply the revision label to the application namespaces. In the following command, REVISION is the value of the istiod revision label that you noted in the previous step.

    for ns in ad cart checkout currency email frontend loadgenerator \
  payment product-catalog recommendation shipping; do
    kubectl label namespace $ns istio.io/rev=REVISION --overwrite
done;

    Expected output:

    namespace/ad labeled
namespace/cart labeled
namespace/checkout labeled
namespace/currency labeled
namespace/email labeled
namespace/frontend labeled
namespace/loadgenerator labeled
namespace/payment labeled
namespace/product-catalog labeled
namespace/recommendation labeled
namespace/shipping labeled

  3. Restart the pods:

    for ns in ad cart checkout currency email frontend loadgenerator \
  payment product-catalog recommendation shipping; do
    kubectl rollout restart deployment -n ${ns}
done;

    Expected output:

    deployment.apps/adservice restarted
deployment.apps/cartservice restarted
deployment.apps/checkoutservice restarted
deployment.apps/currencyservice restarted
deployment.apps/emailservice restarted
deployment.apps/frontend restarted
deployment.apps/loadgenerator restarted
deployment.apps/paymentservice restarted
deployment.apps/productcatalogservice restarted
deployment.apps/recommendationservice restarted
deployment.apps/shippingservice restarted

Managed service mesh

  1. Apply the revision label to the application namespaces. In the following command, the REVISION label must be the value of your managed Cloud Service Mesh release channel: asm-managed for regular, asm-managed-rapid for rapid, or asm-managed-stable for stable.

    for ns in ad cart checkout currency email frontend loadgenerator \
  payment product-catalog recommendation shipping; do
    kubectl label namespace $ns istio.io/rev=REVISION --overwrite
done;

    Expected output:

    namespace/ad labeled
namespace/cart labeled
namespace/checkout labeled
namespace/currency labeled
namespace/email labeled
namespace/frontend labeled
namespace/loadgenerator labeled
namespace/payment labeled
namespace/product-catalog labeled
namespace/recommendation labeled
namespace/shipping labeled

  2. If you also deployed the optional managed data plane, annotate the application namespaces as follows:

    for ns in ad cart checkout currency email frontend loadgenerator \
  payment product-catalog recommendation shipping; do
    kubectl annotate --overwrite namespace $ns mesh.cloud.google.com/proxy='{"managed":"true"}'
done;

  3. Restart the pods:

    for ns in ad cart checkout currency email frontend loadgenerator \
  payment product-catalog recommendation shipping; do
    kubectl rollout restart deployment -n ${ns}
done;

    Expected output:

    deployment.apps/adservice restarted
deployment.apps/cartservice restarted
deployment.apps/checkoutservice restarted
deployment.apps/currencyservice restarted
deployment.apps/emailservice restarted
deployment.apps/frontend restarted
deployment.apps/loadgenerator restarted
deployment.apps/paymentservice restarted
deployment.apps/productcatalogservice restarted
deployment.apps/recommendationservice restarted
deployment.apps/shippingservice restarted

Exposing and accessing the application

The way you expose the application outside the mesh depends on whether you deployed an ingress gateway. You can choose to expose the application using an istio ingress gateway or using a Kubernetes Service.

Using ingress gateway

If you deployed an ingress gateway to the cluster as specified in the prerequisite, do the following steps to expose the application using the gateway.

  1. Deploy a Gateway and VirtualService for the frontend service

    kubectl apply -f istio-manifests/frontend-gateway.yaml

    Expected output:

    gateway.networking.istio.io/frontend-gateway created
virtualservice.networking.istio.io/frontend-ingress created

  2. Get the external IP address of the ingress gateway. Replace the placeholders with the following information:

    • GATEWAY_SERVICE_NAME : The name of the ingress gateway service. If you deployed the sample gateway without modification, or if you deployed the default ingress gateway, the name is istio-ingressgateway.

    • GATEWAY_NAMESPACE: The namespace in which you deployed the ingress gateway. If you deployed the default ingress gateway, the namespace is istio-system.

    kubectl get service GATEWAY_SERVICE_NAME  -n GATEWAY_NAMESPACE

    The output is similar to:

    NAME                   TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)                                      AGE
istio-ingressgateway   LoadBalancer   10.19.247.233   35.239.7.64   80:31380/TCP,443:31390/TCP,31400:31400/TCP   27m

    In this example, the IP address of the ingress gateway is 35.239.7.64.

  3. Visit the application on your browser to confirm installation:

    http://EXTERNAL_IP/

No ingress gateway

If you did not deploy an ingress gateway or choose to expose the application using a Kubernetes Service, do the following steps:

  1. Deploy a service of type LoadBalancer to expose the frontend service

    kubectl apply -f frontend-external.yaml

  2. Find the external IP address of the frontend-external service:

    kubectl get service frontend-external -n frontend

  3. Visit the application on your browser to confirm installation:

    http://EXTERNAL_IP/

You can explore the Cloud Service Mesh observability features in the Google Cloud console. Note that it can take up to 10 minutes for the topology graph to display the services in your mesh.

Clean up

Before deleting Online Boutique, you might want to work through Cloud Service Mesh by example: mTLS, which uses the sample. When you're finished exploring, use the following commands to remove the Online Boutique sample:

  1. Delete the application namespaces:

    kubectl delete -f kubernetes-manifests/namespaces

    Expected output:

    namespace "ad" deleted
namespace "cart" deleted
namespace "checkout" deleted
namespace "currency" deleted
namespace "email" deleted
namespace "frontend" deleted
namespace "loadgenerator" deleted
namespace "payment" deleted
namespace "product-catalog" deleted
namespace "recommendation" deleted
namespace "shipping" deleted

  2. Delete the service entries:

    kubectl delete -f istio-manifests/allow-egress-googleapis.yaml

    Expected output:

    serviceentry.networking.istio.io "allow-egress-googleapis" deleted
serviceentry.networking.istio.io "allow-egress-google-metadata" deleted

What's next?