Kubernetes StorageClass and PVC

Creating K8s PVCs and StorageClass constructs in the DuploCloud Portal

Configuring Kubernetes Storage

You can configure the Storage Class and Persistent Volume Claims (PVCs) from the DuploCloud Portal.

In the DuploCloud Portal, navigate to Kubernetes -> Storage. The Kubernetes Storage page displays.

You define your Kubernetes Persistent Volume Claims and Storage Classes from this page.

Creating a Storage Class

1. DuploCloud Portal, navigate to Kubernetes -> Storage.

2. Click Add. The Add Kubernetes Storage Class page displays.

3. Define the Storage Class Name, Provisioner, Reclaim Policy, and Volume Binding Mode. Select other options, such as whether to Allow Volume Expansion.

4. Create a Storage Class, as in the example below.

5. For EKS, you can create EFS following these steps.

Add Kubernetes Storage Class page for EKS in AWS

Add Kubernetes Storage Class page for AKS in Azure

For information on using Native Azure StorageClasses, see this section.

Creating Kubernetes Persistent Volume Claim

DuploCloud Portal, navigate to Kubernetes -> Storage.

The Persistent Volume Claims option is selected by default.

The Persistent Volume Claims option on the Kubernetes Storage page

Click Add. The Add Kubernetes Persistent Volume Claim page displays.

The Add Kubernetes Persistent Volume Claim page

1. Define the PVC Name, Storage Class Name, Volume Name, Volume Mode, and other details such as volume Access Modes.

2. Optionally, to group resources in the Kubernetes Apps dashboard, add an app name in the Labels field, in the following format:

   Key: app.duplocloud.net/app-name
   Value: <app name>

3. Click Add.

If you are using K8s and PVCs to autoscale your storage groups and you encounter out-of-space conditions, simply adding new storage volumes may not resolve the issue. Instead, you must increase the size of the existing PVCs to accommodate your storage needs.

For guidance on how to perform volume expansion in Kubernetes, refer to the following resources:

• Managing Volume Expansions in StatefulSets on GKE

• Increasing Disk Size in a StatefulSet

• Expanding Persistent Volume Claims in Kubernetes

• Expanding Kubernetes Persistent Volumes on EKS