86 lines
2.2 KiB
Nix
86 lines
2.2 KiB
Nix
{ pkgs, ... }:
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{
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imports = [
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../secrets/machines/back.nix
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../system/baremetal-server.nix
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../system/btrfs.nix
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../system/ucode-intel.nix
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../system/zfs.nix
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];
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system.stateVersion = "23.11";
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boot.initrd = {
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availableKernelModules = [ "hpsa" "aesni_intel" "tg3" ];
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luks.devices.nixos-root.device = "/dev/md1";
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};
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boot.swraid = {
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enable = true;
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mdadmConf = ''
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DEVICE partitions
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ARRAY /dev/md0 level=raid1 num-devices=2 metadata=1.0 name=nixos:0 UUID=8b85ad8d:07770d93:de437327:626744b3
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ARRAY /dev/md1 level=raid1 num-devices=2 metadata=1.2 name=nixos:1 UUID=fa799b6d:76859754:7bf68be4:d184553c
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PROGRAM ${pkgs.toybox}/bin/true
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'';
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};
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boot.kernelParams = [ "zfs.zfs_arc_max=34359738368" ]; # 32 GiB
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fileSystems."/" = {
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device = "/dev/mapper/nixos-root";
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fsType = "btrfs";
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options = [ "noatime" "subvol=@" ];
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};
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fileSystems."/boot" = {
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device = "/dev/md0";
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fsType = "vfat";
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};
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fileSystems."/home" = {
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device = "/dev/mapper/nixos-root";
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fsType = "btrfs";
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options = [ "subvol=@home" ];
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};
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fileSystems."/nix" = {
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device = "/dev/mapper/nixos-root";
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fsType = "btrfs";
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options = [ "noatime" "subvol=@nix" ];
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};
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fileSystems."/var/log" = {
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device = "/dev/mapper/nixos-root";
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fsType = "btrfs";
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options = [ "noatime" "compress=zstd" "subvol=@log" ];
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};
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services.btrfs.autoScrub.fileSystems = [ "/" ];
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users.users.backup = {
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isNormalUser = true;
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uid = 2000;
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createHome = false;
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openssh.authorizedKeys.keys = let
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restrictCmd =
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''command="${pkgs.rrsync}/bin/rrsync -wo -no-del /tank/",restrict'';
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in [
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"${restrictCmd} ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAO9LOBcl04ddGijyDSuUXH47Qt6TZISUDwDr1wrm+Ou tank.c8h4.io"
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];
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};
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services.openssh.settings.AllowUsers = [ "backup" ];
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systemd.services.switch-mlx4-ports-to-eth = {
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serviceConfig.Type = "oneshot";
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description = "switch Mellanox ConnectX-3 Pro ports to ethernet mode";
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script = ''
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echo eth >/sys/bus/pci/devices/0000\:04\:00.0/mlx4_port1
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echo eth >/sys/bus/pci/devices/0000\:04\:00.0/mlx4_port2
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'';
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wantedBy = [ "multi-user.target" ];
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};
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}
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