feat(terraform): GPU worker node support (schematic, interface/diskSelector/swap tuning, gpu-node label, NVIDIA LTS extensions)

terraform/talos_schematic.tf

@@ -19,13 +19,50 @@ data "talos_image_factory_urls" "longhorn_installer" {
   platform      = "metal"
 }
 
+# GPU-enabled schematic with NVIDIA drivers and toolkit (+ Longhorn deps, since
+# worker nodes also run the Longhorn CSI DaemonSet).
+# LTS channel (580.xx), not production (595.xx) -- Tesla V100 (Volta) is on
+# NVIDIA's Legacy driver branch; the 595.xx production driver ignores it entirely
+# ("NVRM: No NVIDIA GPU found").
+resource "talos_image_factory_schematic" "gpu_enabled" {
+  schematic = jsonencode({
+    customization = {
+      systemExtensions = {
+        officialExtensions = [
+          "siderolabs/iscsi-tools",
+          "siderolabs/util-linux-tools",
+          "siderolabs/nonfree-kmod-nvidia-lts",
+          "siderolabs/nvidia-container-toolkit-lts",
+        ]
+      }
+    }
+  })
+}
+
+# Generate installer image URL for GPU schematic
+data "talos_image_factory_urls" "gpu_installer" {
+  talos_version = var.talos_version
+  schematic_id  = talos_image_factory_schematic.gpu_enabled.id
+  platform      = "metal"
+}
+
 # Output the schematic ID and installer URL for reference
 output "talos_schematic_id" {
   value       = talos_image_factory_schematic.longhorn.id
   description = "Talos Image Factory schematic ID with Longhorn dependencies"
 }
 
+output "talos_gpu_schematic_id" {
+  value       = talos_image_factory_schematic.gpu_enabled.id
+  description = "Talos Image Factory schematic ID with GPU (NVIDIA driver + container toolkit)"
+}
+
 output "talos_installer_url" {
   value       = data.talos_image_factory_urls.longhorn_installer.urls.installer
   description = "Talos installer image URL with iscsi-tools and util-linux-tools"
 }
+
+output "talos_gpu_installer_url" {
+  value       = data.talos_image_factory_urls.gpu_installer.urls.installer
+  description = "Talos installer image URL with NVIDIA GPU drivers and container toolkit"
+}