Create PodInfo

We first need to install the 3 different instances of PodInfo:

  • Frontend
  • Backend v1
  • Backend v2

Create a apps folder in our repo:

├── amazon-cloudwatch
│   ├── cwagent-fluentd-quickstart.yaml
│   └── cwagent-prometheus-eks.yaml
├── appmesh-system
│   ├── appmesh-controller.yaml
│   ├── appmesh-inject.yaml
│   ├── appmesh-prometheus.yaml
│   └── crds.yaml
├── apps
├── namespaces
│   ├── amazon-cloudwatch.yaml
│   ├── appmesh-system.yaml
│   └── apps.yaml

Now download the yaml file for the deployments and services:

curl -o apps/1-podinfo.yaml

Add and then commit the 1-podinfo.yaml file and push the the changes to your GitHub repo.

Flux will now see that the desired state of the apps namespace has changed in Git and will apply the resources to our cluster. This will take up to 1 minute to apply.

Check that that the deployment and services has been created by running the following command:

kubectl get pods,svc -n apps

You should see the pods running and services:

NAME                                      READY   STATUS    RESTARTS   AGE
pod/backend-podinfo-v1-5454d76d7f-66cg7   2/2     Running   0          56s
pod/backend-podinfo-v2-74f967bf8b-4lb28   2/2     Running   0          56s
pod/frontend-podinfo-54f9995b4f-r668p     2/2     Running   0          56s

NAME                         TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)             AGE
service/backend-podinfo-v1   ClusterIP    <none>        9898/TCP,9999/TCP   56s
service/backend-podinfo-v2   ClusterIP   <none>        9898/TCP,9999/TCP   56s
service/frontend-podinfo     ClusterIP    <none>        9898/TCP,9999/TCP   56s

You’ll see that there are 2 containers running in each of the PodInfo pods. This is denoted by the 22 in the READY column. If you look at the 1-podinfo.yaml file you’ll see that there is only 1 container declared (i.e. podinfo). The AWS App Mesh Injector has injected a sidecar container into the deployment when Flux applied the yaml. You can verify this by doing a kubectl describe on one of the pods.