Kubernetes Community São Paulo - 2024

Simplificando o Monitoramento de aplicações NodeJS.

Starting Kind Cluster

 kind create cluster -n kcdsp --config kind.yaml

Install Grafana Tempo

kubectl apply -f tempo.yaml

Build the NodeJS Voting App

docker build -t nodejs-voting-app:kcdsp nodejs-voting-app

Build the NodeJS Voting App

• Replace the IMAGE

kubectl apply -f nodejs-voting-app/deployment.yaml

Install CertManager

kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.2/cert-manager.yaml

Install the OpenTelemetry Operator

kubectl apply -f https://github.com/open-telemetry/opentelemetry-operator/releases/latest/download/opentelemetry-operator.yaml

Deploy the OpenTelemetry Collector

kubectl apply -f otel.yaml

Forward a local port to your application

kubectl port-forward -n kcdsp svc/nodejs-voting-app-service 8080:80

Forward a local port to your Grafana Instance

kubectl port-forward -n kcdsp svc/grafana 3000:3000

Apply the auto-instrumentation manifest

kubectl apply -f instrumentation.yaml

Set the required annotation into your NodeJS app.

kubectl patch deployment nodejs-voting-app  -n kcdsp -p '{"spec": {"template":{"metadata":{"annotations":{"instrumentation.opentelemetry.io/inject-nodejs":"true"}}}} }'

Create some traffic to your app.

curl -X POST localhost:8080/vote -H "Content-Type: application/json" -d '{"candidate": "1"}'