apiVersion: v1
kind: ConfigMap
metadata:
  name: otel-collector-config
  namespace: tracing
data:
  config.yaml: |
    receivers:
      otlp:
        protocols:
          grpc:
            endpoint: 0.0.0.0:4317
          http:
            endpoint: 0.0.0.0:4318

    processors:
      batch:
        timeout: 1s
        send_batch_size: 1024
      
      # Add service.namespace attribute if missing
      attributes:
        actions:
          - key: deployment.environment
            value: homelab
            action: upsert

    exporters:
      otlp:
        endpoint: tempo.tracing.svc.cluster.local:4317
        tls:
          insecure: true
      
      # Debug logging for troubleshooting
      debug:
        verbosity: basic

    extensions:
      health_check:
        endpoint: 0.0.0.0:13133

    service:
      extensions: [health_check]
      pipelines:
        traces:
          receivers: [otlp]
          processors: [batch, attributes]
          exporters: [otlp, debug]
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: otel-collector
  namespace: tracing
  labels:
    app.kubernetes.io/name: otel-collector
spec:
  replicas: 2
  selector:
    matchLabels:
      app.kubernetes.io/name: otel-collector
  template:
    metadata:
      labels:
        app.kubernetes.io/name: otel-collector
      annotations:
        reloader.stakater.com/auto: "true"
    spec:
      securityContext:
        runAsNonRoot: true
        runAsUser: 10001
      containers:
        - name: collector
          image: otel/opentelemetry-collector-contrib:0.111.0
          args:
            - --config=/etc/otel/config.yaml
          ports:
            - name: otlp-grpc
              containerPort: 4317
              protocol: TCP
            - name: otlp-http
              containerPort: 4318
              protocol: TCP
            - name: health
              containerPort: 13133
              protocol: TCP
          volumeMounts:
            - name: config
              mountPath: /etc/otel
          resources:
            requests:
              cpu: 50m
              memory: 128Mi
            limits:
              cpu: 200m
              memory: 256Mi
          readinessProbe:
            httpGet:
              path: /
              port: health
            initialDelaySeconds: 5
            periodSeconds: 10
          livenessProbe:
            httpGet:
              path: /
              port: health
            initialDelaySeconds: 10
            periodSeconds: 30
      volumes:
        - name: config
          configMap:
            name: otel-collector-config
---
apiVersion: v1
kind: Service
metadata:
  name: otel-collector
  namespace: tracing
  labels:
    app.kubernetes.io/name: otel-collector
spec:
  type: ClusterIP
  ports:
    - name: otlp-grpc
      port: 4317
      targetPort: otlp-grpc
    - name: otlp-http
      port: 4318
      targetPort: otlp-http
    - name: health
      port: 13133
      targetPort: health
  selector:
    app.kubernetes.io/name: otel-collector