Files
athenix/variants/nix-ephemeral.nix
UGA Innovation Factory cb37fad70e refactor: create glue/ and variants/ directories
- Add glue/ for fleet generation logic and common configuration
- Add variants/ for hardware type modules
- Improves separation of concerns and module organization
2026-01-06 18:31:40 -05:00

68 lines
2.0 KiB
Nix

# ============================================================================
# Ephemeral/Diskless System Configuration
# ============================================================================
# Configuration for systems that run entirely from RAM without persistent storage.
# Suitable for kiosks, netboot clients, and stateless workstations.
# All data is lost on reboot.
{ inputs, ... }:
{
config,
lib,
modulesPath,
...
}:
{
imports = [
(modulesPath + "/installer/scan/not-detected.nix")
];
# ========== Boot Configuration ==========
boot.initrd.availableKernelModules = [
"xhci_pci" # USB 3.0 support
"nvme" # NVMe support
"usb_storage" # USB storage devices
"sd_mod" # SD card support
"sdhci_pci" # SD card host controller
];
boot.initrd.kernelModules = [ ];
boot.kernelModules = [ "kvm-intel" ]; # Intel virtualization support
boot.extraModulePackages = [ ];
boot.kernelParams = [
"quiet" # Minimal boot messages
"splash" # Show Plymouth boot splash
"boot.shell_on_fail" # Emergency shell on boot failure
"udev.log_priority=3" # Reduce udev logging
"rd.systemd.show_status=auto" # Show systemd status during boot
];
# ========== Ephemeral Configuration ==========
# No persistent storage - everything runs from RAM
athenix.host.filesystem.swapSize = lib.mkForce "0G";
athenix.host.filesystem.device = lib.mkForce "/dev/null"; # Dummy device
athenix.host.buildMethods = lib.mkDefault [
"iso" # Live ISO image
"ipxe" # Network boot
];
# Disable disk management for RAM-only systems
disko.enableConfig = lib.mkForce false;
# Define tmpfs root filesystem
fileSystems."/" = {
device = "none";
fsType = "tmpfs";
options = [
"defaults"
"size=50%"
"mode=755"
];
};
nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
athenix.sw.enable = lib.mkDefault true;
athenix.sw.type = lib.mkDefault "stateless-kiosk";
}