apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: iperf3-server
spec:
  selector:
    matchLabels:
      app: iperf3-server
  template:
    metadata:
      labels:
        app: iperf3-server
    spec:
      subdomain: iperf3
      initContainers:
      - name: set-hostname
        image: busybox:1.35
        command: ['sh', '-c']
        args:
          - |
            NODE_NAME=$(echo $NODE_NAME | cut -d'.' -f1 | tr '[:upper:]' '[:lower:]')
            echo "iperf3-${NODE_NAME}" > /etc/hostname
            hostname "iperf3-${NODE_NAME}"
        securityContext:
          privileged: true
        env:
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
      containers:
      - name: iperf3-server
        image: networkstatic/iperf3:latest
        args: ["-s"]
        ports:
        - containerPort: 5201
          protocol: TCP
        env:
        - name: NODE_NAME
          valueFrom:
            fieldRef:
              fieldPath: spec.nodeName
        - name: HOSTNAME
          value: $(NODE_NAME)
        resources:
          requests:
            memory: "64Mi"
            cpu: "100m"
          limits:
            memory: "256Mi"
            cpu: "500m"
      tolerations:
      - effect: NoSchedule
        operator: Exists
      - effect: NoExecute
        operator: Exists