iperf3 Deployment for Kubernetes network performance tests

deploy-iperf3.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: iperf3
spec:
  replicas: 2
  selector:
    matchLabels:
      app: iperf3
  template:
    metadata:
      labels:
        app: iperf3
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
          - labelSelector:
              matchExpressions:
              - key: app
                operator: In
                values:
                - iperf3
            topologyKey: "kubernetes.io/hostname"
      containers:
      - name: iperf3
        image: nicolaka/netshoot
        args: ["sleep","infinity"]

iperf3-k8s-tests.md

Network Performance Testing on Kubernets

1. Deploy iperf3: kubectl apply -f deploy-iperf3.yaml
2. Check Pods, wait until ready: kubectl get pods -o wide
3. Start the server in the first Pod:

# Exec into the Pod 1:
kubectl exec -it iperf3-<pod-1> -- /bin/bash
# Verify Pod IP:
ip addr
# Start the server:
iperf3 -s -p 12345

4. Start the client, connecting to the Pod IP of Pod 1:

# Exec into the Pod 2:
kubectl exec -it iperf3-<pod-2> -- /bin/bash
# Start the client:
iperf3 -c <pod-1-ip> -p 12345