Goldpinger to test K8s Pod to Pod connectivity

k8s-goldpinger.yaml

# https://github.com/bloomberg/goldpinger
---
apiVersion: v1
kind: Namespace
metadata:
  name: goldpinger
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRoleBinding
metadata:
  name: goldpinger-view-pods
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: view
subjects:
  - kind: ServiceAccount
    name: goldpinger-serviceaccount
    namespace: goldpinger
---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: goldpinger-serviceaccount
  namespace: goldpinger
---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: goldpinger
  namespace: goldpinger
  labels:
    app: goldpinger
spec:
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 10
  selector:
    matchLabels:
      app: goldpinger
  template:
    metadata:
      annotations:
        prometheus.io/scrape: 'true'
        prometheus.io/port: '8080'
      labels:
        app: goldpinger
    spec:
      serviceAccount: goldpinger-serviceaccount
      tolerations:
        - key: node-role.kubernetes.io/master
          effect: NoSchedule
        - key: node-role.kubernetes.io/control-plane
          effect: NoSchedule
        - key: node-role.kubernetes.io/infra
          effect: NoSchedule
      securityContext:
        runAsNonRoot: true
        runAsUser: 1000
        fsGroup: 2000
      containers:
        - name: goldpinger
          env:
            - name: HOST
              value: "0.0.0.0"
            - name: PORT
              value: "8080"
            # injecting real hostname will make for easier to understand graphs/metrics
            - name: HOSTNAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            # podIP is used to select a randomized subset of nodes to ping.
            - name: POD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
          image: "docker.io/bloomberg/goldpinger:v3.7.0"
          imagePullPolicy: Always
          securityContext:
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
          resources:
            limits:
              memory: 80Mi
            requests:
              cpu: 1m
              memory: 40Mi
          ports:
            - containerPort: 8080
              name: http
          readinessProbe:
            httpGet:
              path: /healthz
              port: 8080
            initialDelaySeconds: 20
            periodSeconds: 5
          livenessProbe:
            httpGet:
              path: /healthz
              port: 8080
            initialDelaySeconds: 20
            periodSeconds: 5
---
apiVersion: v1
kind: Service
metadata:
  name: goldpinger
  namespace: goldpinger
  labels:
    app: goldpinger
spec:
  type: NodePort
  ports:
    - port: 8080
      nodePort: 30080
      name: http
  selector:
    app: goldpinger
# Finally, port-forward the service `kubectl port-forward -n goldpinger service/goldpinger 8080:8080` and access it via `http://localhost:8080`