# StorageClasses — Applied after Longhorn installation
# The default 'longhorn' SC is created by Helm chart
# These are additional specialized classes
---
# CNPG-specific StorageClass with postgres UID/GID mount options
# Fixes "read-only filesystem" error when PostgreSQL (UID 26) tries to write
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: longhorn-cnpg
  annotations:
    storageclass.kubernetes.io/is-default-class: "false"
    argocd.argoproj.io/sync-options: Prune=false  # Allow ArgoCD adoption
provisioner: driver.longhorn.io
allowVolumeExpansion: true
parameters:
  numberOfReplicas: "3"
  staleReplicaTimeout: "30"
  fromBackup: ""
  dataLocality: "best-effort"
  fsType: "ext4"
mountOptions:
  - "noatime"
  - "uid=26"   # postgres user
  - "gid=26"   # postgres group
reclaimPolicy: Delete
volumeBindingMode: Immediate