corednsprobe/deploy.yaml at master · yewmsft/corednsprobe · GitHub

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# ServiceAccount: gives the pod an identity
apiVersion: v1
kind: ServiceAccount
metadata:
  name: coredns-probe
  namespace: kube-system
---
# Role: allows read‑only access to EndpointSlices (and Endpoints for safety)
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
  name: coredns-probe
  namespace: kube-system
rules:
  - apiGroups: ["discovery.k8s.io"]
    resources: ["endpointslices"]
    verbs: ["get", "list", "watch"]
---
# RoleBinding: binds the Role to the ServiceAccount
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: coredns-probe
  namespace: kube-system
subjects:
  - kind: ServiceAccount
    name: coredns-probe
    namespace: kube-system
roleRef:
  kind: Role
  name: coredns-probe
  apiGroup: rbac.authorization.k8s.io
---
# Deployment: runs a single, lightweight probe pod
apiVersion: apps/v1
kind: Deployment
metadata:
  name: coredns-probe
  namespace: kube-system
spec:
  replicas: 1
  selector:
    matchLabels:
      app: coredns-probe
  template:
    metadata:
      labels:
        app: coredns-probe
    spec:
      serviceAccountName: coredns-probe
      containers:
        - name: probe
          image: paulgmiller/corednsprobe:d80b1c0
          imagePullPolicy: IfNotPresent
          resources:
            requests:
              cpu: 20m
              memory: 64Mi
            limits:
              cpu: 100m
              memory: 128Mi