Backup Storage in Kubernetes

It is possible to utilize the ASERGO remote backup storage in your Kubernetes clusters.

You can check if your cluster has backup storage activated with the following command.

kubectl get pv asergo-backup 2> /dev/null && echo "OK" || echo "PV NOT FOUND - Contact Support"

This service is not an automated backup solution of the cluster or application data. The service supplies an easy way to access the ASERGO Backup Storage directly in your cluster. You will have to create the backup job yourself.

Below is an example of a Kubernetes cronJob taking a backup of a Postgres database every 24 hours.

apiVersion: batch/v1
kind: CronJob
metadata:
  name: backup-job
spec:
  schedule: "0 0 * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: backup-job
            image: postgres
            imagePullPolicy: IfNotPresent
            command: ["/bin/sh", "-c", "/scripts/backup.sh"]
            volumeMounts:
            - name: backup-script
              mountPath: /scripts
            - name: backup-data
              mountPath: /data
          restartPolicy: OnFailure
          volumes:
            - name: backup-script
              configMap:
                name: backup-job
            - name: backup-data
              persistentVolumeClaim:
                claimName: backup-pvc

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: backup-pvc
spec:
  accessModes:
    - ReadWriteMany
volumeName: asergo-backup
storageClassName: nfs-manual
volumeMode: Filesystem
volumeName: asergo-backup

apiVersion: v1
kind: ConfigMap
metadata:
  name: backup-job
data:
  backup.sh |
    pg_dump "host=postgres port=5432 dbname=db user=root password=password" > /data/postgres/$(date +"%s")-db.sql