summaryrefslogtreecommitdiff
path: root/hosts/vidhar/default.nix
blob: d28aeed76ab80f96910ec5df8cc1fc3dc4acba2e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
{ hostName, flake, pkgs, lib, ... }:
{
  imports = with flake.nixosModules.systemProfiles; [
    ./zfs.nix
    initrd-all-crypto-modules default-locale openssh rebuild-machines
  ];

  config = {
    nixpkgs = {
      system = "x86_64-linux";
    };

    networking.hostId = "1e7ddd78";
    environment.etc."machine-id".text = "1e7ddd784c525bba2a03d7c160c5da4e";

    boot = {
      loader.grub = {
        enable = true;
        version = 2;
        device = "/dev/disk/by-id/usb-Intenso_Slim_Line_22010091300228-0:0";
      };

      kernelPackages = pkgs.linuxPackages_latest;
      kernelModules = [ "kvm-intel" ];

      tmpOnTmpfs = true;

      initrd = {
        supportedFilesystems = [ "zfs" ];
        availableKernelModules = [ "ehci_pci" "ahci" "nvme" "isci" "xhci_pci" "usb_storage" "usbhid" "sd_mod" "sr_mod" "drbg" "rtsx_pci_sdmmc" "libsas" "scsi_transport_sas" "e1000e" ];
        kernelModules = [ "dm-raid" "dm-integrity" "dm-snapshot" "dm-thin-pool" ];

        luks.devices = {
          nvm0.device = "/dev/disk/by-label/${hostName}-nvm0";
          nvm1.device = "/dev/disk/by-label/${hostName}-nvm1";
          
          hdd0.device = "/dev/disk/by-label/${hostName}-hdd0";
          hdd1.device = "/dev/disk/by-label/${hostName}-hdd1";
          hdd2.device = "/dev/disk/by-label/${hostName}-hdd2";
          hdd3.device = "/dev/disk/by-label/${hostName}-hdd3";
          hdd4.device = "/dev/disk/by-label/${hostName}-hdd4";
          hdd5.device = "/dev/disk/by-label/${hostName}-hdd5";
        };

        network = {
          enable = true;
          ssh = {
            enable = true;
            hostKeys = with config.sops.secrets; [ initrd_ssh_host_rsa_key.path initrd_ssh_host_ed25519_key.path ];
          };
        };
      };
      
      supportedFilesystems = [ "zfs" ];
      zfs = {
        enableUnstable = true;
      };
    };

    sops.secrets = {
      initrd_ssh_host_rsa_key = {
          key = "rsa";
          sopsFile = ./initrd-host-keys/private.yaml;
      };
      initrd_ssh_host_ed25519_key = {
          key = "ed25519";
          sopsFile = ./initrd-host-keys/private.yaml;
      };
    };

    fileSystems = {
      "/" = {
        fsType = "tmpfs";
        options = [ "mode=0755" ];
      };
    };

    networking = {
      hostName = "vidhar";
      domain = "asgard.yggdrasil";
      search = [ "asgard.yggdrasil" "yggdrasil" ];

      useDHCP = false;
      useNetworkd = true;

      interfaces."eno1".useDHCP = true;

      firewall = {
        enable = true;
        allowPing = true;
        allowedTCPPorts = [
          22 # ssh
        ];
        allowedUDPPortRanges = [
          { from = 60000; to = 61000; } # mosh
        ];
      };
    };
    services.timesyncd.enable = false;
    services.chrony = {
      enable = true;
      servers = [];
      extraConfig = ''
        pool time.cloudflare.com iburst nts
        pool nts.ntp.se iburst nts
        server nts.sth1.ntp.se iburst nts
        server nts.sth2.ntp.se iburst nts
        server ptbtime1.ptb.de iburst nts
        server ptbtime2.ptb.de iburst nts
        server ptbtime3.ptb.de iburst nts

        makestep 0.1 3

        cmdport 0
      '';
    };

    services.openssh = {
      enable = true;
      passwordAuthentication = false;
      challengeResponseAuthentication = false;
      extraConfig = ''
        AllowGroups ssh
      '';
    };
    users.groups."ssh" = {
      members = ["root"];
    };

    security.sudo.extraConfig = ''
      Defaults lecture = never
    '';

    nix.gc = {
      automatic = true;
      options = "--delete-older-than 30d";
    };
  };
}