Remove duplicate definition of hostname

README.org

@@ -1,3 +1,13 @@
 * Aegis
 
 Declarative configuration for the ZFS backup server, using [[https://nixos.org][NixOS]]
+
+** Modules
+
+ The configuration is sliced into different files, per category:
+
+ - ZFS pool configuration: hardware-configuration.nix
+ - Network configuration: networking.nix
+ - Systemd services and timers: periodic.nix
+
+ All the modules are imported in *configuration.nix*

configuration.nix

@@ -33,9 +33,6 @@
   # Cleanup tmp on startup
   boot.cleanTmpDir = true;
 
-  # Set hostname
-  networking.hostName = "aegis";
-
   # Create coace user
   users.users.coace = {
     isNormalUser = true;
@@ -89,16 +86,18 @@
     shell = "${pkgs.fish}/bin/fish";
     openssh.authorizedKeys.keys = [''
       ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINNmNckWBxa2fQkUjWLHgQd32C272yB+f9kTcnooszd5 coolneng@panacea
+      ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICo/y05fFCh8VkDN40cgTR5ZqcbxWvzp0+OzaGIn6vEQ root@unit
     ''];
   };
 
   # Rotate logs after 7 days
   services.journald.extraConfig = "SystemMaxFiles=7";
 
-  # Increase inotify limits
-  boot.kernel.sysctl = { "fs.inotify.max_user_watches" = 204800; };
-
   # Import other configuration modules
-  imports = [ ./modules/hardware-configuration.nix ./modules/networking.nix ];
+  imports = [
+    ./modules/hardware-configuration.nix
+    ./modules/networking.nix
+    ./modules/periodic.nix
+  ];
 
 }

modules/hardware-configuration.nix

@@ -8,7 +8,7 @@
     [ (modulesPath + "/installer/scan/not-detected.nix")
     ];
 
-  boot.initrd.availableKernelModules = [ "usbhid" ];
+  boot.initrd.availableKernelModules = [ "usb_storage" ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
@@ -18,6 +18,11 @@
       fsType = "ext4";
     };
 
+  fileSystems."/shield/unit" =
+    { device = "shield/unit";
+      fsType = "zfs";
+    };
+
   swapDevices = [ ];
 
   powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";

modules/networking.nix

@@ -19,22 +19,4 @@
     nameservers = [ "1.1.1.1" "8.8.8.8" ];
     enableIPv6 = false;
   };
-
-  # Enable zeroconf
-  services.avahi = {
-    enable = true;
-    nssmdns = true;
-    publish = {
-      enable = true;
-      addresses = true;
-      domain = true;
-    };
-  };
-
-  # Firewall configuration
-  networking.firewall = {
-    allowedTCPPorts = [ ];
-    allowedUDPPorts = [ ];
-  };
-
 }

modules/periodic.nix

@@ -0,0 +1,13 @@
+{ config, lib, pkgs, ... }:
+
+{
+  # Idle HDDs when not used
+  systemd.services.hd-idle = {
+    description = "Idle HDDs when not in use";
+    wantedBy = [ "default.target" ];
+    path = with pkgs; [ hd-idle ];
+    script = "${pkgs.hd-idle}/bin/hd-idle";
+    serviceConfig.Type = "simple";
+    after = [ "shield-unit.mount" ];
+  };
+}