How to Protect Kubernetes Applications Running on VMware Tanzu

VMware Tanzu Kubernetes Grid (TKG) lets organizations run Kubernetes clusters across private, hybrid, and public cloud environments. As the number of containerized workloads grows, protecting Kubernetes applications calls for a different approach from traditional infrastructure backup.

A Kubernetes application typically consists of multiple interconnected components:

Kubernetes objects such as Deployments, StatefulSets, and Services

Persistent volumes containing application data

Configuration resources including secrets and config maps

Application packaging frameworks such as Helm charts

Operator-managed services and automation workflows

Backing up storage volumes alone is not enough. If the Kubernetes objects and deployment metadata are not captured, the restored environment cannot recreate the full application state.

Application-aware Kubernetes backup captures the entire application definition and state, so you can restore to any point in time and to a different cluster.

That supports several operational goals:

Disaster recovery

Workload migration across clusters or clouds

Infrastructure modernization

Platform portability

A Kubernetes backup platform needs to integrate directly with the Kubernetes API so it can capture application metadata and relationships during backups.

Step 1: Identify application boundaries

Map Kubernetes applications by namespace, including persistent volumes and dependent services.

Step 2: Capture Kubernetes objects

Make sure backup workflows include metadata such as labels, configuration files, and deployment manifests.

Step 3: Protect persistent volumes

Back up all attached storage volumes used by containerized workloads.

Step 4: Enable application-level backup policies

Define policies that protect whole applications instead of individual resources.

Step 5: Validate cross-cluster restore

Test restoring applications to alternate Kubernetes clusters to confirm they are portable.

Step 6: Automate backup scheduling

Set up automated policies that continuously protect workloads across all clusters.

Back up both data and Kubernetes configuration objects.

Store backups outside the failure domain of the production cluster.

Maintain compatibility across Kubernetes distributions.

Test restore workflows regularly.

Make sure backup policies meet your RPO and RTO requirements.

Following these practices makes recovery and migration of containerized workloads reliable.

Why can’t traditional VM backups protect Kubernetes applications?

Kubernetes workloads depend on configuration objects and orchestration metadata in addition to disk data.

What must be included in a Kubernetes application backup?

Persistent volumes, Kubernetes objects, deployment configurations, and associated metadata.

Can Kubernetes applications be restored to another cluster?

Yes. Kubernetes-native backup solutions support cross-cluster restoration and migration.

What is application-aware backup in Kubernetes?

It is a method that captures both the data and the Kubernetes resources needed to rebuild the application environment.

Why is cross-cloud portability important?

It lets organizations move workloads between infrastructure providers without rebuilding applications by hand.