hcloud: add base image GENERATE_IMAGE.md

GENERATE_IMAGE.md

@@ -0,0 +1,21 @@
+# Hcloud
+
+- Create new VM:
+  - location: falkenstein
+  - image: ubuntu 22.04
+  - type: shared x86
+    - use smallest node type (first in list)
+  - networking: v4 + v6
+  - ssh keys: pick your own
+  - name: nixos-image
+- copy ipv4
+- run:
+
+```
+nix run github:nix-community/nixos-anywhere -- --no-reboot --flake .#hcloud root@IPV4
+```
+
+- wait until finished
+- shutdown machine
+- create snapshot, nixos-base-image
+- delete machine

flake.nix

@@ -4,8 +4,10 @@
   inputs.nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
   inputs.nix-unify.url = "github:mgit-at/nix-unify/master";
   inputs.nix-unify.inputs.nixpkgs.follows = "nixpkgs";
+  inputs.disko.url = "github:nix-community/disko";
+  inputs.disko.inputs.nixpkgs.follows = "nixpkgs";
 
-  outputs = { self, nixpkgs, nix-unify }@inputs: with nixpkgs.lib; let
+  outputs = { self, nixpkgs, nix-unify, disko }@inputs: with nixpkgs.lib; let
     supportedSystems = [ "x86_64-linux" "aarch64-linux" ];
     forAllSystems = f: nixpkgs.lib.genAttrs supportedSystems (system: f system);
   in {
@@ -100,5 +102,19 @@
         ansibleDevShell = pkgs.mkAnsibleDevShell {};
       }
     );
+
+    nixosConfigurations.hcloud = inputs.nixpkgs.lib.nixosSystem {
+      system = "x86_64-linux";
+      specialArgs.inputs = inputs;
+      modules = self.nixosModules.default ++ [
+        ./os/hcloud/configuration.nix
+        ({
+          users.users.root.password = "mgitsetup";
+          services.openssh.settings.PermitRootLogin = "yes";
+          nixpkgs.overlays = [ self.overlays.default ];
+          networking.useDHCP = nixpkgs.lib.mkForce true;
+        })
+      ];
+    };
   };
 }

os/hcloud/configuration.nix

@@ -0,0 +1,18 @@
+{ inputs, modulesPath, ... }:
+{
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+
+    inputs.disko.nixosModules.disko
+    ./disko.nix
+    ({
+      _module.args.disks = [ "/dev/sda" ];
+    })
+  ];
+
+  # boot.loader.grub.device = "/dev/sda";
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "xen_blkfront" "vmw_pvscsi" ];
+  boot.initrd.kernelModules = [ "nvme" ];
+
+  boot.cleanTmpDir = true;
+}

os/hcloud/disko.nix

@@ -0,0 +1,27 @@
+{
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = "/dev/sda";
+        content = {
+          type = "gpt";
+          partitions = {
+            boot = {
+              size = "1M";
+              type = "EF02"; # for grub MBR
+            };
+            root = {
+              size = "100%";
+              content = {
+                type = "filesystem";
+                format = "ext4";
+                mountpoint = "/";
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}