Tanzu Observability demo-app

This is a polyglot demo app for showcasing Tanzu Observability.

---

To view in Tanzu Observability by Wavefront you will need:

• A free Tanzu Observability account:
  • Free trial: https://tanzu.vmware.com/observability
• Base64 encoded API token and the URL for your instance:
  • Docs here: https://docs.wavefront.com/wavefront_api.html#generating-an-api-token

---

• Deploy with helm or kubectl from public.ecr.aws/tanzu_observability_demo_app/to-demo
• You can also build, package and push to your registry and deploy from there.

---

Deploy with Helm

Clone the repo:

git clone https://github.com/wavefrontHQ/demo-app.git
cd deploy/helm

Edit values.yaml to match your environment or use the defaults and execute helm:

vi values.yaml

helm install tacocat-demo .

Verify the pods are running:

k get pods -n  tanzu-observability-demo

~/l/d/d/helm ❯❯❯ k get pods -n  tanzu-observability-demo
NAME                                                       READY   STATUS    RESTARTS   AGE
delivery-blue-764995948c-7g6vn                             1/1     Running   0          14m
delivery-green-867f978c5f-gftdt                            1/1     Running   0          13m
inventory-blue-b86c59d8d-sv2gg                             1/1     Running   0          13m
inventory-green-85679dc4c6-lrhd5                           1/1     Running   0          13m
loadgen-65676c865b-hkffn                                   1/1     Running   0          12m
notification-blue-5668c6df94-cpvlm                         1/1     Running   0          13m
notification-green-76895b75d6-tqr84                        1/1     Running   0          14m
packaging-blue-5775f7c86f-tccsc                            1/1     Running   0          14m
packaging-green-7cb5644df7-f766l                           1/1     Running   0          14m
payments-blue-7486b5bd59-8rggp                             1/1     Running   0          14m
payments-green-5bdf5869bc-447xf                            1/1     Running   0          14m
printing-blue-9fb48997d-bwsqx                              1/1     Running   0          14m
printing-green-7f66cd9bfd-npglt                            1/1     Running   0          14m
shopping-blue-68b89984fd-x52bg                             1/1     Running   0          13m
shopping-green-666dcc6966-lgmrp                            1/1     Running   0          14m
styling-blue-64dbc49f5b-2wrg4                              1/1     Running   0          14m
styling-green-75789ddc76-k77nx                             1/1     Running   0          14m
tanzu-observability-demo-wavefront-proxy-65c544fdd-6959p   1/1     Running   0          14m
warehouse-blue-6cb8f5c988-ltpgv                            1/1     Running   0          14m
warehouse-green-5b65b7d764-z8g6n                           1/1     Running   0          14m

---

Configure, Build, Package and Deploy

---

Configure

• Configure the deploy/src/values.sh file with your settings:

export K8S_NAMESPACE=tacocat
export K8S_APPLICATION=tacocat
export K8S_CLUSTER=cluster1
export K8S_LOCATION=americas
export K8S_REPOSITORY=public.ecr.aws/r8e5f6o2/to-demo
export WAVEFRONT_BASE64_TOKEN=<YOUR BASE64 ENCODED TOKEN HERE>

The above variables will be used by below scripts to fill in the values to setup the *.yaml files. K8S_REPOSITORY is the repository URL for container images which needs to be specified in order for the deployment to properly download the images. You can use the provided K8S_REPOSITORY to deploy and avoid the build and package stages.

• Generate the the yaml files

cd deploy/src
./cm.sh 
./create-yaml.sh

• cm.sh creates the 01-app-config-*.yaml files
• create-yaml.sh uses envsubst and values.sh to configure all of the *yaml files
• *Note: create-yaml.sh must be run before building the images as it also creates applicationTag.yaml files used by the services.

---

Skip to Deploy if you do not want to build, package and push to your registry/repository.

---

Build

• Build the Java services - from the root folder run:

mvn package

• Build the .Net service:

cd payments; dotnet build

• Build the Golang service:

cd inventory; make

---

Package

• Create docker images and push to registry.
• deploy/src/values.sh is referenced here to provide the repository.
• Build containers and push to your repository:

cd images; 
./all.sh

---

Deploy

cd deploy

• The yaml file are split into the deploy, namespace and services folders.
• This facilitates redeploying the apps in the deploy folder without changing the k8s service or namespace (easier redeploys).
• Deploy the namespace first:

kubectl apply -f namespace/

• Deploy the Wavefront proxy and shopping service:

kubectl apply -f services/

• Deploy the app:

kubectl apply -f . 

• To redeploy (but not delete the namespace or service):

kubectl delete -f . 
kubectl apply -f . 

---

That's it!

Please let us know how we can improve!

---

TODO

1. Add UI repo link