Restart Kubernetes Deployment on a schedule using a CronJob

scheduled_deployment_restart.yaml

apiVersion: batch/v1
kind: CronJob
metadata:
  name: "restart-{{ $application.name }}"
  namespace: "{{ $.Release.Namespace }}"
spec:
  concurrencyPolicy: Forbid
  schedule: "* * * * *" # crontab.guru
  jobTemplate:
    spec:
      backoffLimit: 3 
      activeDeadlineSeconds: 600 
      template:
        spec:
          serviceAccountName: pod-restarter
          restartPolicy: Never
          containers:
            - name: kubectl
              image: bitnami/kubectl:1.28 # bitnami.com/stack/kubectl/containers
              command:
                - 'kubectl'
                - '--namespace'
                - '{{ $application.namespace }}'
                - 'rollout'
                - 'restart'
                - 'deployment/{{ $application.name }}'
---
kind: ServiceAccount
apiVersion: v1
metadata:
  name: pod-restarter
  namespace: {{ .Release.Namespace }}
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: pod-restarter
rules:
  - apiGroups: ["apps", "extensions"]
    resources: ["deployments"]
    verbs: ["get", "patch", "list", "watch"]
---
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
  name: pod-restarter
  namespace: {{ $application.namespace }}
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: pod-restarter
subjects:
  - kind: ServiceAccount
    name: pod-restarter
    namespace: {{ $.Release.Namespace }}