Merge pull request 'Add NixOS config for nachtigall' (#4) from nachtigall into main

Reviewed-on: pub-solar/infra-new#4

flake.lock

@@ -32,6 +32,42 @@
         "type": "github"
       }
     },
+    "deploy-rs": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      },
+      "locked": {
+        "lastModified": 1695052866,
+        "narHash": "sha256-agn7F9Oww4oU6nPiw+YiYI9Xb4vOOE73w8PAoBRP4AA=",
+        "owner": "serokell",
+        "repo": "deploy-rs",
+        "rev": "e3f41832680801d0ee9e2ed33eb63af398b090e9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "serokell",
+        "repo": "deploy-rs",
+        "type": "github"
+      }
+    },
+    "flake-compat": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1668681692,
+        "narHash": "sha256-Ht91NGdewz8IQLtWZ9LCeNXMSXHUss+9COoqu6JLmXU=",
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "009399224d5e398d03b22badca40a37ac85412a1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "flake-parts": {
       "inputs": {
         "nixpkgs-lib": "nixpkgs-lib"
@@ -123,16 +159,16 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1690548937,
+        "lastModified": 1671417167,
-        "narHash": "sha256-x3ZOPGLvtC0/+iFAg9Kvqm/8hTAIkGjc634SqtgaXTA=",
+        "narHash": "sha256-JkHam6WQOwZN1t2C2sbp1TqMv3TVRjzrdoejqfefwrM=",
-        "owner": "nixos",
+        "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "2a9d660ff0f7ffde9d73be328ee6e6f10ef66b28",
+        "rev": "bb31220cca6d044baa6dc2715b07497a2a7c4bc7",
         "type": "github"
       },
       "original": {
-        "owner": "nixos",
+        "owner": "NixOS",
-        "ref": "nixos-unstable",
+        "ref": "nixpkgs-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -156,6 +192,22 @@
       }
     },
     "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1690548937,
+        "narHash": "sha256-x3ZOPGLvtC0/+iFAg9Kvqm/8hTAIkGjc634SqtgaXTA=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "2a9d660ff0f7ffde9d73be328ee6e6f10ef66b28",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
       "locked": {
         "lastModified": 1636823747,
         "narHash": "sha256-oWo1nElRAOZqEf90Yek2ixdHyjD+gqtS/pAgwaQ9UhQ=",
@@ -172,11 +224,12 @@
     },
     "root": {
       "inputs": {
+        "deploy-rs": "deploy-rs",
         "flake-parts": "flake-parts",
         "home-manager": "home-manager",
         "nix-darwin": "nix-darwin",
         "nixos-flake": "nixos-flake",
-        "nixpkgs": "nixpkgs",
+        "nixpkgs": "nixpkgs_2",
         "terranix": "terranix"
       }
     },
@@ -185,7 +238,7 @@
         "bats-assert": "bats-assert",
         "bats-support": "bats-support",
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": "nixpkgs_3",
         "terranix-examples": "terranix-examples"
       },
       "locked": {
@@ -216,6 +269,21 @@
         "repo": "terranix-examples",
         "type": "github"
       }
+    },
+    "utils": {
+      "locked": {
+        "lastModified": 1667395993,
+        "narHash": "sha256-nuEHfE/LcWyuSWnS8t12N1wc105Qtau+/OdUAjtQ0rA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "5aed5285a952e0b949eb3ba02c12fa4fcfef535f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -11,6 +11,8 @@
     nixos-flake.url = "github:srid/nixos-flake";
 
     terranix.url = "github:terranix/terranix";
+
+    deploy-rs.url = "github:serokell/deploy-rs";
   };
 
   outputs = inputs@{ self, terranix, ... }:
@@ -19,78 +21,62 @@
 
       imports = [
         inputs.nixos-flake.flakeModule
-        ./terraform.nix
+        # ./terraform.nix
+        ./public-keys
+        ./lib
       ];
 
       perSystem = { config, ... }: { };
 
       flake =
         let
-          # TODO: Change username
+          username = "barkeeper";
-          myUserName = "john";
           system = "x86_64-linux";
-        in
+        in {
-        {
-          # Configurations for Linux (NixOS) machines
           nixosConfigurations = {
-            # TODO: Change hostname from "example1" to something else.
+            nachtigall = self.nixos-flake.lib.mkLinuxSystem system {
-            example1 = self.nixos-flake.lib.mkLinuxSystem "x86_64-linux" {
               imports = [
-                self.nixosModules.common # See below for "nixosModules"!
+                self.nixosModules.common
-                self.nixosModules.linux
+                ./hosts/nachtigall
-                ./hosts/example1/default.nix
+                self.pub-solar.lib.linux.unlockZFSOnBoot
                 self.nixosModules.home-manager
+                self.nixosModules.linux
                 {
-                  home-manager.users.${myUserName} = {
+                  home-manager.users.${username} = {
                     imports = [
-                      self.homeModules.common # See below for "homeModules"!
+                      self.homeModules.common
-                      self.homeModules.linux
                     ];
-                    home.stateVersion = "22.11";
+                    home.stateVersion = "23.05";
                   };
                 }
               ];
             };
           };
 
-          # Configurations for macOS machines
-          darwinConfigurations = {
-            # TODO: Change hostname from "example1" to something else.
-            example1 = self.nixos-flake.lib.mkMacosSystem "aarch64-darwin" {
-              imports = [
-                self.nixosModules.common # See below for "nixosModules"!
-                self.nixosModules.darwin
-                ./hosts/example1/default.nix
-                self.darwinModules.home-manager
-                {
-                  home-manager.users.${myUserName} = {
-                    imports = [
-                      self.homeModules.common # See below for "homeModules"!
-                      self.homeModules.darwin
-                    ];
-                    home.stateVersion = "22.11";
-                  };
-                }
-              ];
-            };
-          };
-
-          # All nixos/nix-darwin configurations are kept here.
           nixosModules = {
             # Common nixos/nix-darwin configuration shared between Linux and macOS.
             common = { pkgs, ... }: {
-              environment.systemPackages = with pkgs; [
+              virtualisation.docker.enable = true;
-                hello
+              services.openssh.enable = true;
-              ];
+              services.openssh.settings.PermitRootLogin = "prohibit-password";
             };
+
             # NixOS specific configuration
             linux = { pkgs, ... }: {
-              users.users.${myUserName}.isNormalUser = true;
+              users.users.${username} = {
-              services.netdata.enable = true;
+                name = username;
+                group = username;
+                extraGroups = ["wheel"];
+                isNormalUser = true;
+                openssh.authorizedKeys.keys = self.publicKeys.allAdmins;
               };
-            # nix-darwin specific configuration
+              users.groups.${username} = {};
-            darwin = { pkgs, ... }: {
+
-              security.pam.enableSudoTouchIdAuth = true;
+              security.sudo.wheelNeedsPassword = false;
+              nix.settings.trusted-users = [ "root" username ];
+
+              # TODO: Remove when we stop locking ourselves out.
+              users.users.root.openssh.authorizedKeys.keys = self.publicKeys.allAdmins;
             };
           };
 
@@ -101,14 +87,22 @@
               programs.git.enable = true;
               programs.starship.enable = true;
               programs.bash.enable = true;
+              programs.neovim = {
+                enable = true;
+                vimAlias = true;
+                viAlias = true;
+                defaultEditor = true;
+                # configure = {
+                #   packages.myVimPackages = with pkgs.vimPlugins; {
+                #     start = [vim-nix vim-surrund rainbow];
+                #   };
+                # };
               };
-            # home-manager config specific to NixOS
-            linux = {
-              xsession.enable = true;
             };
-            # home-manager config specifi to Darwin
+          };
-            darwin = {
+          deploy.nodes = self.pub-solar.lib.deploy.mkDeployNodes self.nixosConfigurations {
-              targets.darwin.search = "Bing";
+            nachtigall = {
+              sshUser = username;
             };
           };
         };

hosts/nachtigall/default.nix

@@ -0,0 +1,94 @@
+{ config, pkgs, ... }:
+
+{
+  imports =
+    [ # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+    ];
+
+  # Use GRUB2 as the boot loader.
+  # We don't use systemd-boot because Hetzner uses BIOS legacy boot.
+  boot.loader.systemd-boot.enable = false;
+  boot.loader.grub = {
+    enable = true;
+    efiSupport = false;
+    mirroredBoots = [
+      {
+        devices = [
+          "/dev/disk/by-id/nvme-SAMSUNG_MZVL21T0HCLR-00B00_S676NF0R517371"
+        ];
+        path = "/boot1";
+      }
+      {
+        devices = [
+          "/dev/disk/by-id/nvme-KXG60ZNV1T02_TOSHIBA_Z9NF704ZF9ZL"
+        ];
+        path = "/boot2";
+      }
+    ];
+    copyKernels = true;
+  };
+  boot.supportedFilesystems = [ "zfs" ];
+
+  boot.kernelParams = [
+    "boot.shell_on_fail=1"
+    "ip=138.201.80.102::138.201.80.65:255.255.255.192:nachtigall::off"
+  ];
+
+  boot.initrd.availableKernelModules = [ "igb" ];
+
+  networking.hostName = "nachtigall";
+  networking.domain = "pub.solar";
+  networking.hostId = "00000001";
+
+  # enable flakes by default
+  nix = {
+    package = pkgs.nixFlakes;
+    extraOptions = ''
+      experimental-features = nix-command flakes
+    '';
+  };
+
+  # Set your time zone.
+  time.timeZone = "Etc/UTC";
+
+  environment = {
+    # just a couple of packages to make our lives easier
+    systemPackages = with pkgs; [ vim ];
+  };
+
+  # Network (Hetzner uses static IP assignments, and we don't use DHCP here)
+  networking.useDHCP = false;
+  networking.interfaces."enp35s0".ipv4.addresses = [
+    {
+      address = "138.201.80.102";
+      prefixLength = 26;
+    }
+  ];
+  networking.interfaces."enp35s0".ipv6.addresses = [
+    {
+      address = "2a01:4f8:172:1c25::1";
+      prefixLength = 64;
+    }
+  ];
+  networking.defaultGateway = "138.201.80.65";
+  networking.defaultGateway6 = { address = "fe80::1"; interface = "enp35s0"; };
+
+  services.resolved = {
+    enable = true;
+    extraConfig = ''
+      DNS=9.9.9.9#dns.quad9.net 149.112.112.112#dns.quad9.net 2620:fe::fe#dns.quad9.net 2620:fe::9#dns.quad9.net 193.110.81.0#dns0.eu 185.253.5.0#dns0.eu 2a0f:fc80::#dns0.eu 2a0f:fc81::#dns0.eu
+      FallbackDNS=5.1.66.255#dot.ffmuc.net 185.150.99.255#dot.ffmuc.net 2001:678:e68:f000::#dot.ffmuc.net 2001:678:ed0:f000::#dot.ffmuc.net
+      Domains=~.
+      DNSOverTLS=yes
+    '';
+  };
+
+  users.users.root.initialHashedPassword = "$y$j9T$bIN6GjQkmPMllOcQsq52K0$q0Z5B5.KW/uxXK9fItB8H6HO79RYAcI/ZZdB0Djke32";
+
+  # This value determines the NixOS release with which your system is to be
+  # compatible, in order to avoid breaking some software such as database
+  # servers. You should change this only after NixOS release notes say you
+  # should.
+  system.stateVersion = "23.05"; # Did you read the comment?
+}

hosts/nachtigall/hardware-configuration.nix

@@ -0,0 +1,48 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ahci" "nvme" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-amd" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "root_pool/root";
+      fsType = "zfs";
+    };
+
+  fileSystems."/var/lib/postgresql" =
+    { device = "root_pool/data/postgresql";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot1" =
+    { device = "/dev/disk/by-uuid/5493-EFF5";
+      fsType = "vfat";
+    };
+
+  fileSystems."/boot2" =
+    { device = "/dev/disk/by-uuid/5494-BA1E";
+      fsType = "vfat";
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.eth0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
+  hardware.cpu.amd.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

lib/compat/default.nix

@@ -0,0 +1,21 @@
+let
+  lock = builtins.fromJSON (builtins.readFile builtins.path {
+    path = ../../flake.lock;
+    name = "lockPath";
+  });
+  flake =
+    import
+    (
+      fetchTarball {
+        url = "https://github.com/edolstra/flake-compat/archive/${lock.nodes.flake-compat.locked.rev}.tar.gz";
+        sha256 = lock.nodes.flake-compat.locked.narHash;
+      }
+    )
+    {
+      src = builtins.path {
+        path = ../../.;
+        name = "projectRoot";
+      };
+    };
+in
+  flake

lib/compat/nixos/default.nix

@@ -0,0 +1,9 @@
+{...}: let
+  inherit (default.inputs.nixos) lib;
+
+  host = configs.${hostname} or configs.PubSolarOS;
+  configs = default.nixosConfigurations;
+  default = (import ../.).defaultNix;
+  hostname = lib.fileContents /etc/hostname;
+in
+  host

lib/default.nix

@@ -0,0 +1,20 @@
+{ self, lib, inputs, ... }: {
+  # Configuration common to all Linux systems
+  flake = {
+    pub-solar.lib = let
+      callLibs = file: import file {inherit lib;};
+    in rec {
+      ## Define your own library functions here!
+      #id = x: x;
+      ## Or in files, containing functions that take {lib}
+      #foo = callLibs ./foo.nix;
+      ## In configs, they can be used under "lib.our"
+
+      deploy = import ./deploy.nix { inherit inputs lib; };
+
+      linux = {
+        unlockZFSOnBoot = import ./unlock-zfs-on-boot.nix {publicKeys = self.publicKeys.allAdmins;};
+      };
+    };
+  };
+}

lib/deploy.nix

@@ -0,0 +1,62 @@
+/*
+ * The contents of this file are adapted from digga
+ * https://github.com/divnix/digga
+ *
+ * Licensed under the MIT license
+ */
+
+{ lib, inputs }: let
+  getFqdn = c: let
+    net = c.config.networking;
+    fqdn =
+      if (net ? domain) && (net.domain != null)
+      then "${net.hostName}.${net.domain}"
+      else net.hostName;
+  in
+    fqdn;
+in {
+  mkDeployNodes = systemConfigurations: extraConfig:
+  /*
+   *
+   Synopsis: mkNodes _systemConfigurations_ _extraConfig_
+
+   Generate the `nodes` attribute expected by deploy-rs
+   where _systemConfigurations_ are `nodes`.
+
+   _systemConfigurations_ should take the form of a flake's
+   _nixosConfigurations_. Note that deploy-rs does not currently support
+   deploying to darwin hosts.
+
+   _extraConfig_, if specified, will be merged into each of the
+   nodes' configurations.
+
+   Example _systemConfigurations_ input:
+
+   ```
+   {
+   hostname-1 = {
+   fastConnection = true;
+   sshOpts = [ "-p" "25" ];
+   };
+   hostname-2 = {
+   sshOpts = [ "-p" "19999" ];
+   sshUser = "root";
+   };
+   }
+   ```
+   *
+   */
+    lib.recursiveUpdate
+    (lib.mapAttrs
+      (
+        _: c: {
+          hostname = getFqdn c;
+          profiles.system = {
+            user = "root";
+            path = inputs.deploy-rs.lib.${c.pkgs.stdenv.hostPlatform.system}.activate.nixos c;
+          };
+        }
+      )
+      systemConfigurations)
+    extraConfig;
+}

lib/unlock-zfs-on-boot.nix

@@ -0,0 +1,29 @@
+{publicKeys}: {
+  # From https://nixos.wiki/wiki/ZFS#Unlock_encrypted_zfs_via_ssh_on_boot
+  boot.initrd.network = {
+    enable = true;
+    ssh = {
+      enable = true;
+      # To prevent ssh clients from freaking out because a different host key is used,
+      # a different port for ssh is useful (assuming the same host has also a regular sshd running)
+      port = 2222;
+
+      # Please create this manually the first time.
+      hostKeys = [ "/etc/secrets/initrd/ssh_host_ed25519_key" ];
+      authorizedKeys = publicKeys;
+    };
+    # this will automatically load the zfs password prompt on login
+    # and kill the other prompt so boot can continue
+    postCommands = ''
+      cat <<EOF > /root/.profile
+      if pgrep -x "zfs" > /dev/null
+      then
+        zfs load-key -a
+        killall zfs
+      else
+        echo "zfs not running -- maybe the pool is taking some time to load for some unforseen reason."
+      fi
+      EOF
+    '';
+  };
+}

public-keys/admins.nix

@@ -0,0 +1,9 @@
+{
+  axeman-1 = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMNeQYLFauAbzDyIbKC86NUh9yZfiyBm/BtIdkcpZnSU axeman@tuxnix";
+  b12f-1 = "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBHx4A8rLYmFgTOp1fDGbbONN8SOT0l5wWrUSYFUcVzMPTyfdT23ZVIdVD5yZCySgi/7PSh5mVmyLIZVIXlNrZJg= @b12f Yubi Main";
+  b12f-2 = "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBEST9eyAY3nzGYNnqDYfWHu+89LZsOjyKHMqCFvtP7vrgB7F7JbbECjdjAXEOfPDSCVwtMMpq8JJXeRMjpsD0rw= @b12f Yubi Backup";
+  hensoko-1 = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEbaQdxp7Flz6ttELe63rn+Nt9g43qJOLih6VCMP4gPb";
+  hensoko-2 = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAqkqMYgncrnczcW/0PY+Z+FmNXXpgw6D9JWTTwiainy";
+  teutat3s-1 = "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBFro/k4Mgqyh8yV/7Zwjc0dv60ZM7bROBU9JNd99P/4co6fxPt1pJiU/pEz2Dax/HODxgcO+jFZfvPEuLMCeAl0= YubiKey #10593996 PIV Slot 9a";
+
+}

public-keys/default.nix

@@ -0,0 +1,8 @@
+{lib, ...}:
+{
+  flake = {
+    publicKeys = {
+      allAdmins = lib.attrsets.attrValues (import ./admins.nix); 
+    };
+  };
+}