k8s-internal-etcd-cluster-backup.yaml

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: backup
  namespace: kube-system
spec:
  schedule: "0 0 * * *" #every day at midnight
  jobTemplate:
    spec:
      template:
        spec:
          containers:
            - name: backup
              # Same image as in /etc/kubernetes/manifests/etcd.yaml
              image: k8s.gcr.io/etcd:3.4.3-0
              env:
                - name: ETCDCTL_API
                  value: "3"
              command: ["/bin/sh"]
              args:
                [
                  "-c",
                  "etcdctl --endpoints=https://127.0.0.1:2379 --cacert=/var/lib/minikube/certs/etcd/ca.crt --cert=/var/lib/minikube/certs/etcd/server.crt --key=/var/lib/minikube/certs/etcd/server.key snapshot save /backup/etcd-snapshot-$(date +%Y-%m-%d_%H:%M:%S_%Z).db",
                ]
              volumeMounts:
                - mountPath: /var/lib/minikube/certs/etcd
                  name: etcd-certs
                  readOnly: true
                - mountPath: /backup
                  name: backup
          restartPolicy: OnFailure
          hostNetwork: true
          volumes:
            - name: etcd-certs
              hostPath:
                path: /var/lib/minikube/certs/etcd
                type: DirectoryOrCreate
            - name: backup
              hostPath:
                path: /data/backup
                type: DirectoryOrCreate