Untitled :: ROSA Workshop

Create and configure a project for the service mesh

Now, let’s proceed with deploying a workload to test our service mesh.

First, let’s create a project (namespace) for us to deploy our workload into. To do so, run the following command:

oc new-project bookinfo

Sample Output

Now using project "bookinfo" on server "https://api.rosa-6n4s8.1c1c.p1.openshiftapps.com:6443".

You can add applications to this project with the 'new-app' command. For example, try:

    oc new-app rails-postgresql-example

to build a new example application in Ruby. Or use kubectl to deploy a simple Kubernetes application:

    kubectl create deployment hello-node --image=k8s.gcr.io/e2e-test-images/agnhost:2.33 -- /agnhost serve-hostname

Next, let’s label that project (namespace) to enable the service mesh injection for all applications in the project.
```
oc label namespace bookinfo istio-injection=enabled
```
Sample Output
```
namespace/bookinfo labeled
```
Even though we’ve enabled service mesh injection in the project, we also need to add our project (namespace) to the ServiceMeshMemberRoll, which limits the scope of the service mesh control plane to only projects in the member roll. To add the project to the ServiceMeshMemberRoll, run the following command:
```
cat << EOF | oc apply -f -
---
apiVersion: maistra.io/v1
kind: ServiceMeshMemberRoll
metadata:
  name: default
  namespace: istio-system
spec:
  members:
  - bookinfo
EOF
```
Sample Output
```
servicemeshmemberroll.maistra.io/default created
```
Next, let’s verify the ServiceMeshMemberRoll was created successfully. To do so, run the following command:
```
oc -n istio-system get smmr -o wide
```
Sample Output
```
NAME      READY   STATUS       AGE   MEMBERS
default   1/1     Configured   20s   ["bookinfo"]
```
The service mesh member roll was successfully configured when the STATUS column is Configured and your project shows up in the MEMBERS column.

Deploy our test workload

Now that we’ve configured the service mesh for our project, let’s deploy our bookinfo workload into our project. To do so, run the following command to create the necessary resources:

oc -n bookinfo apply -f \
  https://raw.githubusercontent.com/rh-mobb/rosa-workshop-content/main/rosa-content/assets/scripts/bookinfo.yaml

Sample Output

service/details created
serviceaccount/bookinfo-details created
deployment.apps/details-v1 created
service/ratings created
serviceaccount/bookinfo-ratings created
deployment.apps/ratings-v1 created
service/reviews created
serviceaccount/bookinfo-reviews created
deployment.apps/reviews-v1 created
deployment.apps/reviews-v2 created
deployment.apps/reviews-v3 created
service/productpage created
serviceaccount/bookinfo-productpage created
deployment.apps/productpage-v1 created

You may ignore any warnings.

Interested in seeing the configuration you’re deploying? Check it out on GitHub here.

Now, let’s create the service mesh ingress gateway. To do so, run the following command:

oc -n bookinfo apply -f \
  https://raw.githubusercontent.com/rh-mobb/rosa-workshop-content/main/rosa-content/assets/scripts/bookinfo-gateway.yaml

Sample Output

gateway.networking.istio.io/bookinfo-gateway created
virtualservice.networking.istio.io/bookinfo created

Next, let’s add some destination rules. Destination rules define policies that apply to traffic intended for a service after routing has occurred. To create the rules, run the following command:

oc -n bookinfo apply -f \
  https://raw.githubusercontent.com/rh-mobb/rosa-workshop-content/main/rosa-content/assets/scripts/destination-rule-all.yaml

Sample Output

destinationrule.networking.istio.io/productpage created
destinationrule.networking.istio.io/reviews created
destinationrule.networking.istio.io/ratings created
destinationrule.networking.istio.io/details created

Verifying the Bookinfo installation

First, let’s verify that all pods are running and ready by running the following command:

oc -n bookinfo get pods

Sample Output

NAME                              READY   STATUS    RESTARTS   AGE
details-v1-7d55897577-gvwm5       2/2     Running   0          98s
productpage-v1-8648b7c9b5-txfvk   2/2     Running   0          96s
ratings-v1-84599899df-twc8g       2/2     Running   0          97s
reviews-v1-59647cf6c-pbrn8        2/2     Running   0          97s
reviews-v2-5fc469b4ff-fp4fn       2/2     Running   0          97s
reviews-v3-7d84688cc9-kktpt       2/2     Running   0          97s

Next, let’s get the URL for the product page. To do so, run the following command:

echo "http://$(oc -n istio-system get route istio-ingressgateway -o jsonpath='{.spec.host}')/productpage"

Sample Output

http://istio-ingressgateway-istio-system.apps.rosa-6n4s8.1c1c.p1.openshiftapps.com/productpage

Copy and paste the URL provided in the previous step into your web browser and verify the Bookinfo product page is successfully deployed. Remember, if you get "Application not found" check to see if your browser has changed your http to and https!

You should see a book review of "The Comedy of Errors".