apiVersion: v1
kind: ConfigMap
metadata:
  name: otel-collector-conf
  namespace: istio-system
  labels:
    app: otel-collector
data:
  otel-collector-config: |
    receivers:
      otlp:
        protocols:
          grpc:
          http:
    processors:
      batch:
    exporters:
      logging:
        loglevel: debug
    service:
      pipelines:
        logs:
          receivers: [otlp]
          processors: [batch]
          exporters: [logging]
---
apiVersion: v1
kind: Service
metadata:
  name: otel-collector
  namespace: istio-system
  labels:
    app: otel-collector
spec:
  ports:
    - name: grpc-otlp # Default endpoint for OpenTelemetry receiver.
      port: 4317
      protocol: TCP
      targetPort: 4317
  selector:
    app: otel-collector
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: otel-collector
  namespace: istio-system
spec:
  minReadySeconds: 5
  progressDeadlineSeconds: 120
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app: otel-collector
  strategy:
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 1
    type: RollingUpdate
  template:
    metadata:
      labels:
        app: otel-collector
        sidecar.istio.io/inject: "false" # do not inject
    spec:
      containers:
        - command:
            - "/otelcol"
            - "--config=/conf/otel-collector-config.yaml"
          env:
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.name
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.namespace
          image: otel/opentelemetry-collector:0.38.0
          imagePullPolicy: IfNotPresent
          name: otel-collector
          ports:
            - containerPort: 4317
              protocol: TCP
          resources:
            limits:
              cpu: "2"
              memory: 4Gi
            requests:
              cpu: 200m
              memory: 400Mi
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          volumeMounts:
            - name: otel-collector-config-vol
              mountPath: /conf
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      terminationGracePeriodSeconds: 30
      volumes:
        - configMap:
            defaultMode: 420
            items:
              - key: otel-collector-config
                path: otel-collector-config.yaml
            name: otel-collector-conf
          name: otel-collector-config-vol