manager.yaml

apiVersion: v1
kind: Namespace
metadata:
  labels:
    app.kubernetes.io/component: controller-manager
  name: system
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: controller-manager
  namespace: system
  labels:
    app.kubernetes.io/component: controller-manager
spec:
  selector:
    matchLabels:
      app.kubernetes.io/component: controller-manager
  replicas: 1
  template:
    metadata:
      annotations:
        kubectl.kubernetes.io/default-container: manager
      labels:
        app.kubernetes.io/component: controller-manager
        app.kubernetes.io/name: node-healthcheck-operator
    spec:
      affinity:
        nodeAffinity:
          preferredDuringSchedulingIgnoredDuringExecution:
            - weight: 1
              preference:
                matchExpressions:
                  - key: node-role.kubernetes.io/master
                    operator: Exists
            - weight: 1
              preference:
                matchExpressions:
                  - key: node-role.kubernetes.io/control-plane
                    operator: Exists
      tolerations:
        - effect: NoSchedule
          key: node-role.kubernetes.io/master
        - effect: NoSchedule
          key: node-role.kubernetes.io/control-plane
          operator: Exists
      priorityClassName: system-cluster-critical
      containers:
      - command:
        - /manager
        args:
        - --leader-elect
        image: controller:latest
        name: manager
        env:
          - name: DEPLOYMENT_NAMESPACE
            valueFrom:
              fieldRef:
                fieldPath: metadata.namespace
        securityContext:
          allowPrivilegeEscalation: false
          capabilities:
            drop:
              - ALL
        livenessProbe:
          httpGet:
            path: /healthz
            port: 8081
          initialDelaySeconds: 15
          periodSeconds: 20
        readinessProbe:
          httpGet:
            path: /readyz
            port: 8081
          initialDelaySeconds: 5
          periodSeconds: 10
        resources:
          requests:
            cpu: 100m
            memory: 20Mi
      securityContext:
        runAsNonRoot: true
      serviceAccountName: controller-manager
      terminationGracePeriodSeconds: 10