apiVersion: opentelemetry.io/v1beta1
kind: OpenTelemetryCollector
metadata:
  name: otel-agent
  namespace: opentelemetry-operator-system
spec:
  mode: daemonset
  hostNetwork: true # 建议开启，以便更准确获取 Host 指标
  config:
    receivers:
      # 1. 采集 Pod 和 容器 的资源使用情况 (CPU/Mem)
      kubeletstats:
        collection_interval: 20s
        auth_type: "serviceAccount"
        endpoint: "${env:K8S_NODE_NAME}:10250"
        insecure_skip_verify: true
        metric_groups:
          - node
          - pod
          - container

      # 2. 采集宿主机物理指标
      hostmetrics:
        collection_interval: 20s
        scrapers:
          cpu:
          memory:
          load:
          filesystem:
          network:

      # 3. (可选) 采集日志
      # filelog:
      #   include: [/var/log/pods/*/*/*.log]
      #   ...

    processors:
      batch:
        send_batch_size: 500
        timeout: 5s
      memory_limiter:
        check_interval: 1s
        limit_mib: 400
        spike_limit_mib: 100
      
      # 资源检测：自动识别云厂商(腾讯云)信息、主机名等
      resourcedetection:
        detectors: [system] # 如果在腾讯云CVM上，可以尝试加入 'tencentcloud' 但 system 通常足够
        timeout: 2s
        override: false

      # 关键：给指标打上 K8s 标签 (Pod Name, Namespace, Node Name)
      k8sattributes:
        passthrough: false
        extract:
          metadata:
            - k8s.pod.name
            - k8s.pod.uid
            - k8s.deployment.name
            - k8s.namespace.name
            - k8s.node.name
        pod_association:
          - sources:
            - from: resource_attribute
              name: k8s.pod.uid
          - sources:
            - from: resource_attribute
              name: k8s.pod.ip
          - sources:
            - from: connection

    exporters:
      # 发送给集群内的 Gateway Service
      otlp:
        endpoint: "otel-gateway-collector.opentelemetry-operator-system.svc.cluster.local:4317"
        tls:
          insecure: true

    service:
      pipelines:
        metrics:
          receivers: [kubeletstats, hostmetrics]
          processors: [resourcedetection, k8sattributes, memory_limiter, batch]
          exporters: [otlp]
        
        # traces: # 如果应用配置了 sidecar 或其他方式发送 trace 到本地 agent
        #   receivers: [otlp]
        #   exporters: [otlp]