Simple wrapper around iperf3 to measure network bandwidth from all nodes of a Kubernetes cluster
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iperf3-k8s/iperf2.yaml

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apiVersion: apps/v1
kind: Deployment
metadata:
name: iperf2-server-deployment
labels:
app: iperf2-server
spec:
replicas: 10
selector:
matchLabels:
app: iperf2-server
template:
metadata:
labels:
app: iperf2-server
spec:
affinity:
nodeAffinity:
preferredDuringSchedulingIgnoredDuringExecution:
- weight: 1
preference:
matchExpressions:
- key: kubernetes.io/role
operator: In
values:
- master
tolerations:
- key: node-role.kubernetes.io/master
operator: Exists
effect: NoSchedule
containers:
- name: iperf2-server
image: mlabbe/iperf
args: ['-s']
ports:
- containerPort: 5001
protocol: TCP
name: server-tcp
- containerPort: 5001
protocol: UDP
name: server-udp
terminationGracePeriodSeconds: 0
---
apiVersion: v1
kind: Service
metadata:
name: iperf2-server
spec:
selector:
app: iperf2-server
ports:
- protocol: TCP
port: 5001
name: crappy-tcp
targetPort: server-tcp
- protocol: UDP
port: 5001
name: crappy-udp
targetPort: server-udp
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: iperf2-clients
labels:
app: iperf2-client
spec:
selector:
matchLabels:
app: iperf2-client
template:
metadata:
labels:
app: iperf2-client
spec:
tolerations:
- key: node-role.kubernetes.io/master
operator: Exists
effect: NoSchedule
containers:
- name: iperf2-client
image: mlabbe/iperf
command: ['/bin/sh', '-c', 'sleep infinity']
# To benchmark manually: kubectl exec iperf2-clients-jlfxq -- /bin/sh -c 'iperf -c iperf2-server'
terminationGracePeriodSeconds: 0