---
tags: Observability, open-telemetry
---

# otel kubernetes install

[官方安裝文件](https://opentelemetry.io/docs/collector/getting-started/)
[官方的 k8s 安裝檔 (當下最新版本，會改變)](https://raw.githubusercontent.com/open-telemetry/opentelemetry-collector/main/examples/k8s/otel-config.yaml)

# REF: https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/examples/kubernetes/otel-collector.yaml
# REF: https://raw.githubusercontent.com/open-telemetry/opentelemetry-collector/main/examples/k8s/otel-config.yaml
# REF: https://juejin.cn/post/7128277655475978276
# REF: https://github.com/open-telemetry/opentelemetry-helm-charts/tree/main/charts/opentelemetry-collector
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: otel-collector-config
data:
  config.yaml: |-
    receivers:
      # https://github.com/open-telemetry/opentelemetry-collector/tree/main/receiver/otlpreceiver
      otlp:
        protocols:
          grpc:
            endpoint: 0.0.0.0:4317
          http:
            endpoint: 0.0.0.0:4318

    exporters:
      # https://github.com/open-telemetry/opentelemetry-collector/blob/main/exporter/loggingexporter/README.md
      logging:
        verbosity: normal

      # https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/exporter/lokiexporter/README.md
      loki:
        endpoint: http://loki-gateway.kube-monitor.svc.cluster.local/loki/api/v1/push
        tls:
          insecure: true

      # https://github.com/open-telemetry/opentelemetry-collector/blob/main/exporter/otlpexporter/README.md
      otlp/tempo:
        endpoint: http://tempo-distributor.kube-monitor.svc.cluster.local:4317
        tls:
          insecure: true

    # https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/exporter/lokiexporter/README.md#labels
    processors:
      batch:
      # 把 OTLP 送出的 Attributes 設定為 Loki Label
      #attributes:
      #  actions:
      #  ##EFCore 語法轉出 - 尚未測試成功
      #    - action: insert
      #      key: db_statement
      #      from_attribute: db.statement
      #    - action: insert
      #      key: loki.attribute.labels
      #      value: db_statement
      #  ##EFCore 語法轉出 - 尚未測試成功

      # 把 OTLP 送出的 Resource 設定為 Loki Label
      resource:
        attributes:
          - action: insert
            key: service_name
            from_attribute: service.name
          - action: insert
            key: service_env
            from_attribute: service.env
          - action: insert
            key: service_namespace
            from_attribute: service.namespace
          - action: insert
            key: service_version
            from_attribute: service.version
          - action: insert
            key: loki.resource.labels
            value: service_name, service_env, service_namespace, service_version

    service:
      pipelines:
        logs:
          receivers: [otlp]
          #processors: [resource, attributes]
          processors: [resource]
          exporters: [loki]
        traces:
          receivers: [otlp]
          processors: []
          exporters: [otlp/tempo]

---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: otel-collector
  labels:
    app: opentelemetry
    component: otel-collector
spec:
  selector:
    matchLabels:
      app: opentelemetry
      component: otel-collector
  template:
    metadata:
      labels:
        app: opentelemetry
        component: otel-collector
    spec:
      containers:
      - name: otel-collector
        image: otel/opentelemetry-collector-contrib:0.70.0
        resources:
          limits:
            cpu: 100m
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 100Mi
        ports:
        - containerPort: 4318 # Default OpenTelemetry http receiver port.
        - containerPort: 4317 # Default OpenTelemetry receiver port.
        - containerPort: 8888  # Metrics.
        volumeMounts:
        - mountPath: /etc/otelcol-contrib/config.yaml
          name: data
          subPath: config.yaml
          readOnly: true
      terminationGracePeriodSeconds: 30
      volumes:
      - name: data
        configMap:
          name: otel-collector-config

---
apiVersion: v1
kind: Service
metadata:
  name: otel-collector
  labels:
    app: opentelemetry
    component: otel-collector
spec:
  ports:
  - name: otlp-grpc # Default endpoint for OpenTelemetry gRPC receiver.
    port: 4317
    protocol: TCP
    targetPort: 4317
  - name: otlp-http # Default endpoint for OpenTelemetry HTTP receiver.
    port: 4318
    protocol: TCP
    targetPort: 4318
  - name: metrics # Default endpoint for querying metrics.
    port: 8888
  selector:
    component: otel-collector