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Longhorn

Purpose: For platform engineers, operators, documents the Longhorn storage service in openCenter-gitops-base.

longhorn provides distributed block storage for Kubernetes clusters. In this repository it is installed as a Helm release in longhorn-system together with additional storage classes.

What This Repo Deploys

  • Namespace/longhorn-system

  • HelmRelease/longhorn

  • additional storage classes:

  • longhorn-general

  • longhorn-general-multi-attach

  • Base values Secret: longhorn-values-base

  • Optional longhorn-values-override

When to Use It

  • You need persistent volumes on bare metal or general-purpose virtualized clusters.

  • You want snapshots, backups, and replicated block storage without a cloud CSI backend.

  • You want standard storage classes managed with the platform.

Key Integration Points

  • Application PVCs usually bind to the Longhorn storage classes.

  • Backup targets and default settings are cluster-specific.

  • Node disk layout and storage networking quality strongly affect Longhorn behavior.

Example

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: app-data
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: longhorn-general
  resources:
    requests:
      storage: 20Gi

Configuration Surfaces

  • Service path: applications/base/services/longhorn/

  • Namespace: longhorn-system

  • Flux object: HelmRelease/longhorn

  • Base values Secret: longhorn-values-base

  • Override values Secret: longhorn-values-override

  • ../../operations/services/longhorn.md[Longhorn Configuration Guide]

Upstream References