apiVersion: v1
kind: ConfigMap
metadata:
  name: otel-gateway-config
  namespace: monitoring
data:
  config.yaml: |
    receivers:
      # 接收来自 Agent 的数据 (gRPC 4317, HTTP 4318)
      otlp:
        protocols:
          grpc:
            endpoint: 0.0.0.0:4317
          http:
            endpoint: 0.0.0.0:4318

      # 1. 集群宏观: K8s 事件
      k8s_events:
        auth_type: serviceAccount

      # 2. 集群宏观：拉取 TKE 自带的 tke-kube-state-metrics (Kube-State-Metrics)
      prometheus:
        config:
          scrape_configs:
            - job_name: 'tke-kube-state-metrics'
              scrape_interval: 30s
              static_configs:
                - targets: ['tke-kube-state-metrics.kube-system.svc.cluster.local:8180']

    processors:
      batch:
        send_batch_size: 2000
        timeout: 10s
      
      resourcedetection:
        detectors: [env, system]
        override: true
      
      # 3. 注入集群 ID, 解决 Prometheus 重复采样报错
      resource:
        attributes:
          - key: cluster.name
            value: "test-k8s"
            action: upsert
      
      # 将 OTLP Resource 属性转换为 Metric 标签，确保 Prometheus 能够区分不同 Pod/Node
      transform:
        metric_statements:
          - context: datapoint
            statements:
              - set(attributes["k8s_pod_name"], resource.attributes["k8s.pod.name"])
              - set(attributes["k8s_node_name"], resource.attributes["k8s.node.name"])
              - set(attributes["k8s_namespace_name"], resource.attributes["k8s.namespace.name"])
              - set(attributes["k8s_container_name"], resource.attributes["k8s.container.name"])
              - set(attributes["cluster_name"], resource.attributes["cluster.name"])

      memory_limiter:
        check_interval: 1s
        limit_mib: 1500
        spike_limit_mib: 512

    exporters:
      # 对接 Prometheus
      otlphttp/prometheus:
        endpoint: "http://10.0.0.38:9090/api/v1/write"
        tls:
          insecure: true
      
      # 打印日志（用于排查）
      debug:
        verbosity: detailed

    service:
      pipelines:
        metrics:
          receivers: [otlp, prometheus] # 汇聚微观(otlp)和宏观(prometheus)指标
          processors: [memory_limiter, resourcedetection, resource, transform, batch]
          exporters: [otlphttp/prometheus]
        logs:
          receivers: [k8s_events]
          processors: [memory_limiter, resourcedetection, resource, batch]
          exporters: [debug]