The provider ID is a unique identifier of a machine assigned to a Kubernetes Node object. It enables cloud providers to link Kubernetes Nodes with their underlying infrastructure. In Kubernetes, this ID is specified under spec.providerID in the Node specification. The Hetzner Cloud Controller Manager sets this value during node initialization.
In the Hetzner ecosystem, the following provider ID formats are used:
- Hetzner Cloud Server:
hcloud://<server-id> - Robot Server:
hrobot://<robot-id> - Legacy Syself Robot Server:
hcloud://bm-<robot-id>- This format is no longer used for new nodes but remains for backward compatibility.
You can have a look at your provider IDs with the following command:
kubectl get nodes -o=custom-columns='Node Name:metadata.name,Provider ID:spec.providerID'