Nodes registered with the DigitalOcean cloud controller manager should have the following labels:
Defines the instance type using the droplet size slug. For example, a standard 2 vCPU droplet with 4 GB of memory would have label beta.kubernetes.io/instance-type: s-2vcpu-4gb. You can see all available sizes in the API docs.
Defines the region a node is running in. For example, a droplet running in tor1 will have label failure-domain.beta.kubernetes.io/region: tor1.