homelab/terraform/longhorn.tf

# Longhorn StorageClasses — app-specific variants only.
#
# The cluster-wide default `longhorn` SC is intentionally NOT managed here.
# It is owned by Longhorn's own setting-controller (reconciled from the
# `longhorn-storageclass` ConfigMap in longhorn-system, stamped with the
# `longhorn.io/last-applied-configmap` annotation). Managing it in Terraform
# caused a dual-ownership fight: TF strips the annotation, Longhorn re-adds it
# and delete+recreates the SC (params are immutable), racing TF's post-apply
# read ("Root object present, but now absent"). Longhorn recreates it
# automatically on any cluster, so it needs no TF representation.

resource "kubernetes_storage_class" "longhorn_kafka" {
  metadata {
    name = "longhorn-kafka"
  }
  storage_provisioner    = "driver.longhorn.io"
  reclaim_policy         = "Delete"
  allow_volume_expansion = true
  volume_binding_mode    = "Immediate"

  parameters = {
    numberOfReplicas    = "3"
    staleReplicaTimeout = "30"
    fromBackup          = ""
    fsType              = "ext4"
    dataLocality        = "disabled"
  }
}