# 部署主体 (DaemonSet)
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: otel-agent
  namespace: monitoring
  labels:
    app: otel-agent
spec:
  selector:
    matchLabels:
      app: otel-agent
  template:
    metadata:
      labels:
        app: otel-agent
    spec:
      hostNetwork: true
      dnsPolicy: ClusterFirstWithHostNet
      serviceAccountName: otel-agent
      containers:
        - name: otel-collector
          image: otel/opentelemetry-collector-contrib:latest
          command:
            - "/otelcol-contrib"
          args:
            - "--config=/conf/config.yaml"
          env:
            # 获取当前节点名称，传给 kubeletstats 使用
            - name: K8S_NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
          volumeMounts:
            - name: config-vol
              mountPath: /conf
            # 挂载宿主机根目录，以便采集宿主机指标
            - name: hostfs
              mountPath: /hostfs
              readOnly: true
              mountPropagation: HostToContainer
          resources:
            limits:
              cpu: 500m
              memory: 500Mi
            requests:
              cpu: 100m
              memory: 200Mi
      volumes:
        - name: config-vol
          configMap:
            name: otel-agent-config
        - name: hostfs
          hostPath:
            path: /