Fixed iperf3

k8s/apps/iperf3/daemonset.yaml

@@ -11,8 +11,23 @@ spec:
       labels:
         app: iperf3-server
     spec:
-      hostname: iperf3-$(NODE_NAME)
       subdomain: iperf3
+      initContainers:
+      - name: set-hostname
+        image: busybox:1.35
+        command: ['sh', '-c']
+        args:
+          - |
+            NODE_NAME=$(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
@@ -25,6 +40,8 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: spec.nodeName
+        - name: HOSTNAME
+          value: $(NODE_NAME)
         resources:
           requests:
             memory: "64Mi"