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Backups for Kubernetes

You can back up Kubernetes applications and application groups automatically or manually.

How Backups Work in Commvault

In Commvault, backups function as follows:

  • Initial, full backups: The first backup of an application is always a full backup.

  • Scheduled, incremental backups: The server plan that is assigned to an application group includes a schedule for incremental backups. You can recover application data, even when the most recent backup was incremental.

  • Manual backups: You can back up applications and application groups on demand.

If a backup cannot start, it is queued and will automatically resume when the blackout window, resource constraint, or network limitation is resolved.

Important

If you use Commvault to protect a Red Hat OpenShift environment as a hypervisor, migrate backups to Kubernetes in Commvault, so that you can back up and restore more data types.

Data You Can Back Up

  • Kubernetes-orchestrated clusters, including namespaced and non-namespaced API resources and objects

  • Applications, which includes supported API resources/objects (such as Secrets, ConfigMaps, Namespaces, and StorageClasses) that can be listed, created, or re-created using the Kubernetes API server

  • Annotations on Pods, DaemonSets, Deployments, and StatefulSets

  • Helm chart-based applications, including helm configuration and annotations (supported only for on-premises access nodes)

  • Configuration-related volumes (configMap, downwardAPI, projected, secret)

  • Persistent storage objects (PersistentVolumeClaims, PersistentVolumes)

  • PersistentVolumeClaim volumes created from a VolumeSnapshotClass

  • Container image registries (containerized, virtualized)

  • etcd Kubernetes backing store and SSL certificates (on-premises environments and self-managed cloud environments only)

For detailed information about the resources that you can back up, see the following topics:

Data You Cannot Back Up

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