dbbaskette/demo-app

Demo App for DT & k8s and misc.

Tanzu Observability demo-app

This is a polyglot demo app for showcasing Tanzu Observability.

TODO

1. Add UI repo link

Build, Package and Deploy

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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

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Package

• Create docker images and push to registry.
• You must set REPOSITORY_PREFIX for your repository. Example:

export REPOSITORY_PREFIX=192.168.1.8/demo-app

• Replace 192.168.1.8/demo-app with your repository!
• Build containers and push to your repository:

cd images; 
./all.sh

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Deploy

cd deploy

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Step One: Config Maps / Direct Ingestion or Wavefront Proxy

• The config maps are configured with a script with files from the data folder.

• Since the purpose of tacocat is to demo the power of Tanzu Observability, it can be configured to send metrics to Tanzu Observability via direct ingestion or by proxy.

• Execute one of the following:

./cm.sh direct

or

./cm.sh proxy

• cm.sh will regen the 01-configmap-*.yaml files.
• If you go direct, you'll need to edit the files and add your TO (Wavefront) details.

./deploy/data/direct/inventory.conf
./deploy/data/direct/wf-config.yaml

• If you use the proxy, you'll need to configure a Kubernetes secret with your TO API token:

kubectl apply -f namespace/.
kubectl create secret generic  wf-token -n tacocat
kubectl edit secrets wf-token  -n tacocat

• Your secrets file should look something like this:

# Please edit the object below. Lines beginning with a '#' will be ignored,
# and an empty file will abort the edit. If an error occurs while saving this file will be
# reopened with the relevant failures.
#
apiVersion: v1
data:
  token: YOUR BASE64 ENCODED TOKEN HERE
kind: Secret
metadata:
  creationTimestamp: "2021-03-09T15:00:09Z"
  name: wf-token
  namespace: tacocat
  resourceVersion: "231537"
type: Opaque

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Step Two: Configure Yaml files with your repository:

• The yaml file are split into the deploy, namespace adn services folders.
• This facilitates redeploying the apps in the deploy folder without changing the k8s service or namespace (easier redeploys).
• You'll need to edit (sed) the *.yaml files to have the location of your registry from the Package step like this:

sed -i 's|<add your repository here>|192.168.1.8/demo-app|g' *.yaml

• Replace "192.168.1.8/demo-app" with your repository!

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Step Three: Deploy to K8S

• Initial deployment:

kubectl apply -f namespace/.
kubectl apply -f service/.
kubectl apply -f . 

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

kubectl delete -f . 
kubectl apply -f . 

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Need to add link to UI repo

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That's it!

Please let use know how we can improve!