OpenTelemetry collector configured to export to Jaeger

deploy-collector.md

Deploying a OpenTelemetry collector in a k8s cluster

1. Make sure to first have a working Jaeger in the cluster: https://gist.github.com/joaopgrassi/8eb001d94310effef038364e4f6994ab

2. Run the following command to deploy the collector in your k8s cluster:

Note: The yml below expects the Jaeger services to be deployed within the observability using the names from the gist above. If you follow that it should all work. If not, make sure the dns names are the correct.

kubectl apply -n observability -f <<EOF
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: otel-collector-conf
  namespace: observability
  labels:
    app: opentelemetry
    component: otel-collector-conf
data:
  otel-collector-config: |
    receivers:
      otlp:
        protocols:
          grpc:
          http:
    processors:
    exporters:
      logging:
      jaeger:
        endpoint: "simplest-collector-headless.observability:14250"
        insecure: "true"
    service:
      pipelines:
        traces:
          receivers: [otlp]
          processors: []
          exporters: [logging, jaeger]
---
apiVersion: v1
kind: Service
metadata:
  name: otel-collector
  namespace: observability
  labels:
    app: opentelemetry
    component: otel-collector
spec:
  ports:
  - name: otlpgrpc # Default endpoint for OpenTelemetry gRPC receiver.
    port: 4317
    protocol: TCP
    targetPort: 4317
  - name: otlphttp # Default endpoint for OpenTelemetry HTTP receiver.
    port: 4318
    protocol: TCP
    targetPort: 4318
  selector:
    component: otel-collector
  type: ClusterIP
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: otel-collector
  namespace: observability
  labels:
    app: opentelemetry
    component: otel-collector
spec:
  replicas: 1
  selector:
    matchLabels:
      app: opentelemetry
      component: otel-collector
  template:
    metadata:
      labels:
        app: opentelemetry
        component: otel-collector
    spec:
      containers:
      - name: otel-collector
        args:
        - --config=/conf/otel-collector-config.yaml
        image: otel/opentelemetry-collector:0.33.0
        ports:
          - containerPort: 4317 
          - containerPort: 4318
        volumeMounts:
        - name: otel-collector-config-vol
          mountPath: /conf
#        - name: otel-collector-secrets
#          mountPath: /secrets
      volumes:
      - configMap:
          name: otel-collector-conf
          items:
            - key: otel-collector-config
              path: otel-collector-config.yaml
        name: otel-collector-config-vol
EOF