Prepare your Cluster for Backup - Azure, vSphere, GCP, Pre-provisioned Environments

This section describes how to prepare your cluster on AWS, Azure, vSphere, Google Cloud or pre-provisioned environment, so it can be backed up before you begin with Platform Expansion: Convert a DKP Essential Cluster to a DKP Enterprise Managed Cluster.

Prerequisites

• Ensure Velero is installed on your Essential cluster

• Install the Velero CLI (Use at least Velero CLI version 1.10.1)

• Ensure kubectl is installed

• Ensure you have admin rights to the DKP Essential cluster

Prepare your Cluster

Run the following commands in the DKP Essential cluster. For general guidelines on how to set the context, refer to Provide Context for Commands with a kubeconfig File.

Prepare Velero

Enable restic backup capabilities by providing a custom configuration of Velero.

1. Create an Override with a custom configuration for Velero. This custom configuration deploys the node-agent service, which enables restic:

   CODE

   cat << EOF | kubectl apply -f -
   apiVersion: v1
   kind: ConfigMap
   metadata:
     name: velero-overrides
     namespace: kommander
   data:
     values.yaml: |
       ---
       deployNodeAgent: true
   EOF

2. Reference the created Override in Velero’s AppDeployment to apply the new configuration:

   CODE

   cat << EOF | kubectl -n kommander patch appdeployment velero --type='merge' --patch-file=/dev/stdin
   spec:
     configOverrides:
       name: velero-overrides
   EOF

3. Wait until the node-agent has been deployed:

   CODE

   until kubectl get daemonset -A | grep -m 1 "node-agent"; do 0.1 ; done

   The node-agent is ready after a similar output appears:

   CODE

   kommander                node-agent                                       
   3         3        0       3            0           <none>

4. Verify the configuration has been updated before proceeding with the next section:

   CODE

   kubectl -n kommander wait --for=condition=Ready kustomization velero

   The output should look similar to this:

   CODE

   kustomization.kustomize.toolkit.fluxcd.io/velero condition met

Prepare your Pods for Backup

Run the following commands in the DKP Essential cluster. For general guidelines on how to set the context, refer to Provide Context for Commands with a kubeconfig File.

Annotate the gitea pods to ensure restic backs up the Persistent Volumes (PVs) of the pods that will be affected during the expansion process. These volumes contain the Git repository information of your DKP Essential cluster.

kubectl -n kommander annotate pod/gitea-0 backup.velero.io/backup-volumes=data

kubectl -n kommander annotate pod/gitea-postgresql-0 backup.velero.io/backup-volumes=data

Next Step:

Back up a Cluster - Azure, vSphere, GCP, and Pre-provisioned Environments