---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: iperf3-exporter
  labels:
    app: iperf3-exporter
spec:
  selector:
    matchLabels:
      app: iperf3-exporter
  template:
    metadata:
      labels:
        app: iperf3-exporter
    spec:
      serviceAccountName: iperf3-server
      initContainers:
      - name: create-exporter-service
        image: bitnami/kubectl:latest
        env:
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        - name: POD_IP
          valueFrom:
            fieldRef:
              fieldPath: status.podIP
        command:
          - /bin/bash
          - -c
          - |
            NODE_CLEAN=$(echo "$NODE_NAME" | cut -d'.' -f1 | tr '[:upper:]' '[:lower:]' | tr '_' '-')
            SERVICE_NAME="iperf3-exporter-${NODE_CLEAN}"
            
            kubectl apply -f - <<EOF
            apiVersion: v1
            kind: Service
            metadata:
              name: ${SERVICE_NAME}
              namespace: iperf3
              labels:
                app: iperf3-exporter-service
                target-node: "${NODE_NAME}"
            spec:
              type: ClusterIP
              ports:
                - name: metrics
                  port: 9579
                  protocol: TCP
            ---
            apiVersion: v1
            kind: Endpoints
            metadata:
              name: ${SERVICE_NAME}
              namespace: iperf3
              labels:
                app: iperf3-exporter-service
                target-node: "${NODE_NAME}"
            subsets:
              - addresses:
                  - ip: ${POD_IP}
                ports:
                  - name: metrics
                    port: 9579
                    protocol: TCP
            EOF
      containers:
      - name: iperf3-exporter
        image: ghcr.io/edgard/iperf3_exporter:1.2.2
        ports:
        - containerPort: 9579
          name: metrics
          protocol: TCP
        resources:
          requests:
            memory: "64Mi"
            cpu: "50m"
          limits:
            memory: "128Mi"
            cpu: "300m"
        env:
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
      tolerations:
      - effect: NoSchedule
        operator: Exists
      - effect: NoExecute
        operator: Exists