servers/mermet/machine/apu2e4.nix

   1 { pkgs, lib, config, ... }:
   2 let inherit (builtins.extraBuiltins) pass pass-to-file;
   3     inherit (config) networking;
   4     userPass = name: pass "${networking.domainBase}/${networking.hostName}/login/${name}";
   5 in
   6 {
   7   imports =
   8     [ <nixpkgs/nixos/modules/installer/scan/not-detected.nix>
   9     ];
  10
  11   boot.kernel = {
  12     sysctl = {
  13       # Always reboot on a kernel panic,
  14       # to not have to physically go power cycle the apu2e4.
  15       # Which happens if the wrong ZFS password is used
  16       # but the boot is manually forced to continue.
  17       "kernel.panic" = 20;
  18
  19       "vm.swappiness" = 10;
  20       "vm.vfs_cache_pressure" = 50;
  21     };
  22   };
  23
  24   boot.loader = {
  25     grub = {
  26       enable = true;
  27       version = 2;
  28       copyKernels = true;
  29       # efiSupport = true;
  30       devices = [
  31         "/dev/disk/by-id/ata-Samsung_SSD_840_EVO_250GB_S1DBNSAF340110R"
  32       ];
  33       /*
  34       mirroredBoots = [
  35         { devices = [ "${disk_id}" ];
  36           path    = "/boot${bootnum}";
  37         }
  38       ];
  39       */
  40     };
  41     /*
  42     efi = {
  43       canTouchEfiVariables = true;
  44       efiSysMountPoint = "/boot/efi";
  45       efiInstallAsRemovable = false;
  46     };
  47     */
  48   };
  49
  50   boot.initrd = {
  51     availableKernelModules = [
  52       "ahci"
  53       "ehci_pci"
  54       "sd_mod"
  55       "uas"
  56       # Ethernet driver
  57       "igb"
  58       # Made the AES modules available at initrd,
  59       # to speedup the deciphering of the root.
  60       "aes_x86_64"
  61       "aesni_intel"
  62       "cryptd"
  63     ];
  64     kernelModules = [ ];
  65     network = {
  66       # This will use udhcp to get an ip address.
  67       # Make sure you have added the kernel module for your network driver to `boot.initrd.availableKernelModules`,
  68       # so your initrd can load it!
  69       # Static ip addresses might be configured using the ip argument in kernel command line:
  70       # https://www.kernel.org/doc/Documentation/filesystems/nfs/nfsroot.txt
  71       enable = true;
  72       ssh = {
  73          enable = true;
  74          # To prevent ssh from freaking out because a different host key is used,
  75          # a different port for dropbear is useful (assuming the same host has also a normal sshd running)
  76          port = 2222;
  77          # dropbear uses key format different from openssh; can be generated by using:
  78          # $ nix-shell -p dropbear --command "dropbearkey -t ecdsa -f /tmp/initrd-ssh-key"
  79          # WARNING: this key will be in the NixOS store and the initrd and thus maybe on cleartext storage.
  80          # Unfortunately pass cannot be used here because the key is not a valid Nix string.
  81          hostECDSAKey = ../../../.sec/dropbear/mermet.dropbear-ecdsa.key ;
  82          # public ssh key used for login
  83          authorizedKeys = [
  84            # julm
  85            # readFile ../../../.pub/ssh/julm.ssh-rsa.pub
  86            "ssh-rsa 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 GnuPG pub=F2E027182397AC0775714F2AD15AF7F467E8299B sub=7819E44BAEEDE91683811BB00E1AAADBE227DDAA"
  87          ];
  88       };
  89       # this will automatically load the zfs password prompt on login
  90       # and kill the other prompt so boot can continue
  91       postCommands = ''
  92         #zpool import rpool
  93         #/bin/ash
  94         echo "zfs load-key -a; killall zfs" >> /root/.profile
  95       '';
  96     };
  97
  98   };
  99   boot.kernelModules = [ ];
 100   boot.extraModulePackages = [ ];
 101   boot.kernelParams = [
 102     "gfxpayload=text"
 103     "console=tty0"
 104     "console=ttyS0,115200n8"
 105     # DEBUG: "boot.shell_on_fail"
 106     "zfs.zfs_arc_max=262144000" # 250Mo
 107   ];
 108
 109   fileSystems."/boot" =
 110     { device = "/dev/disk/by-uuid/dc3c5387-17d2-43b3-bfa2-bf73afacca07";
 111       fsType = "ext2";
 112     };
 113
 114   fileSystems."/boot/efi" =
 115     { device = "/dev/disk/by-uuid/62E6-E65F";
 116       fsType = "vfat";
 117     };
 118
 119   swapDevices =
 120     [ { device = "/dev/disk/by-partuuid/6b1eaa35-776b-4e60-b21e-7bcee535dd8b";
 121         randomEncryption = {
 122           enable = true;
 123           cipher = "aes-xts-plain64";
 124           source = "/dev/urandom";
 125         };
 126       }
 127     ];
 128
 129   nix.maxJobs = lib.mkDefault 4;
 130   powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
 131
 132   environment = {
 133     systemPackages = with pkgs; [
 134       pciutils
 135     ];
 136   };
 137 }