DigitalOcean provides its own provisioner called CSI-DigitalOcean (https://github.com/digitalocean/csi-digitalocean). To use it, simply follow the instructions in the README.md file. Essentially, you have go to the DigitalOcean dashboard, generate a token, use that to generate a Secret Kubernetes Object, and then deploy the StorageClass manifest file found at https://raw.githubusercontent.com/digitalocean/csi-digitalocean/master/deploy/kubernetes/releases/csi-digitalocean-latest-stable.yaml.

However, because we are using the DigitalOcean Kubernetes platform, our Secret and the csi-digitaloceanstorage class is already configured for us, so we don't actually need to do anything! You can check both the Secret and StorageClass using kubectl get:

$ kubectl get secret
NAME TYPE DATA AGE
default-token-2r8zr kubernetes.io/service-account-token 3 2h

$ kubectl get storageclass
NAME PROVISIONER AGE
do-block-storage (default) com.digitalocean.csi.dobs 2h

Note down the name of the StorageClass (do-block-storage here).