The Piraeus Operator is a Kubernetes Operator to deploy and manage Linstor clusters inside Kubernetes.
With the Piraeus Operator, we can define a Linstor cluster with the LinstorCluster resource. In the following example, satellites (and therefore storage) will only be available in nodes that match the given selector. The default behavior is to run a satellite on every available node.
apiVersion: piraeus.io/v1
kind: LinstorCluster
metadata:
name: linstorcluster
spec:
nodeSelector:
example.com/storage: "yes"As of any Linstor install, the DRBD kernel module must be loaded on every node that should have access to storage. Since Linstor satellites must access the host devices directly, their containers must run as privileged. The Linstor controller does not require such access to host resources, so it does not need any extra privileges.
I want to try it out in my Homelab once I have more nodes to run it. It might be a more efficient alternative to Longhorn for providing highly available storage to Kubernetes.