modules/private/system/dilion.nix

   1 { privateFiles }:
   2 { config, pkgs, name, lib, ... }:
   3 {
   4   deployment = {
   5     targetUser = "root";
   6     targetHost = config.hostEnv.ips.main.ip4;
   7     substituteOnDestination = true;
   8   };
   9   nixpkgs.system = lib.mkOverride 900 "x86_64-linux";
  10   boot = {
  11     loader = {
  12       grub = {
  13         version = 2;
  14         devices = [ "/dev/sda" "/dev/sdb" "/dev/sdc" "/dev/sdd" ];
  15       };
  16       timeout = 1;
  17     };
  18     blacklistedKernelModules = [ "nvidiafb" ];
  19     supportedFilesystems = [ "zfs" ];
  20     kernelPackages = pkgs.linuxPackages_latest;
  21     kernelModules = [ "kvm-intel" ];
  22     initrd.availableKernelModules = [ "ahci" "sd_mod" ];
  23     initrd.secrets = {
  24       "/boot/pass.key" = "/boot/pass.key";
  25     };
  26     kernel.sysctl."vm.nr_hugepages" = 256; # for xmr-stak
  27     # available in nixos-20.09
  28     #zfs.requestEncryptionCredentials = [ "zpool/root" ];
  29   };
  30   nix.maxJobs = 8;
  31   powerManagement.cpuFreqGovernor = "powersave";
  32   hardware.enableRedistributableFirmware = true;
  33
  34   myEnv = import "${privateFiles}/environment.nix" // { inherit privateFiles; };
  35
  36   swapDevices = [ { label = "swap"; } ];
  37   fileSystems = {
  38     "/"           = { fsType = "zfs"; device = "zpool/root"; };
  39     "/boot"       = { fsType = "ext4"; device = "/dev/disk/by-uuid/fd1c511e-2bc0-49d5-b8bb-95e7e8c8c816"; };
  40     "/etc"        = { fsType = "zfs"; device = "zpool/root/etc"; };
  41     "/home"       = { fsType = "zfs"; device = "zpool/root/home"; };
  42     "/home/immae" = { fsType = "zfs"; device = "zpool/root/home/immae"; };
  43     "/tmp"        = { fsType = "zfs"; device = "zpool/root/tmp"; };
  44     "/var"        = { fsType = "zfs"; device = "zpool/root/var"; };
  45     "/data"       = { fsType = "ext4"; label = "data"; };
  46     "/nix"        = { fsType = "ext4"; label = "nix"; };
  47   };
  48
  49   services.udev.extraRules = ''
  50     ACTION=="add", SUBSYSTEM=="net", ATTR{address}=="10:bf:48:7f:e6:3b", NAME="eth0"
  51   '';
  52
  53   networking = {
  54     hostId = "27c3048d"; # generated with head -c4 /dev/urandom | od -A none -t x4
  55     firewall.enable = false;
  56     interfaces."eth0".ipv4.addresses =
  57       [ { address = config.hostEnv.ips.main.ip4; prefixLength = 27; } ]
  58       ++ pkgs.lib.attrsets.mapAttrsToList
  59         (n: ips: { address = ips.ip4; prefixLength = 32; })
  60         (pkgs.lib.attrsets.filterAttrs (n: v: n != "main") config.hostEnv.ips);
  61     interfaces."eth0".ipv6.addresses =
  62       [ { address = "2a01:4f8:141:53e7::"; prefixLength = 64; } ]
  63       ++ pkgs.lib.flatten (pkgs.lib.attrsets.mapAttrsToList
  64         (n: ips: map (ip: { address = ip; prefixLength = (if n == "main" && ip == pkgs.lib.head ips.ip6 then 64 else 128); }) (ips.ip6 or []))
  65         config.hostEnv.ips);
  66     defaultGateway = { address = "176.9.10.225"; interface = "eth0"; };
  67     defaultGateway6 = { address = "fe80::1"; interface = "eth0"; };
  68     nameservers = [
  69       "213.133.98.98"
  70       "213.133.99.99"
  71       "213.133.100.100"
  72       "2a01:4f8:0:a0a1::add:1010"
  73       "2a01:4f8:0:a102::add:9999"
  74       "2a01:4f8:0:a111::add:9898"
  75     ];
  76   };
  77
  78   myServices.ssh.modules = [ config.myServices.ssh.predefinedModules.regular ];
  79   imports = builtins.attrValues (import ../..);
  80
  81   system.nssModules = [ pkgs.libvirt ];
  82   system.nssDatabases.hosts = lib.mkForce [ "files" "libvirt_guest" "mymachines" "dns" "myhostname" ];
  83   programs.zsh.enable = true;
  84
  85   users.users.backup = {
  86     hashedPassword = "!";
  87     isSystemUser = true;
  88     extraGroups = [ "keys" ];
  89     shell = pkgs.bashInteractive;
  90     openssh.authorizedKeys.keys = let
  91       zreplConfig = config.secrets.fullPaths."zrepl/zrepl.yml";
  92     in
  93       ["command=\"${pkgs.zrepl}/bin/zrepl stdinserver --config ${zreplConfig} eldiron\",restrict ${config.myEnv.zrepl_backup.ssh_key.public}"];
  94   };
  95   security.sudo.extraRules = pkgs.lib.mkAfter [
  96     {
  97       commands = [
  98         { command = "/home/immae/.nix-profile/root_scripts/*"; options = [ "NOPASSWD" ]; }
  99       ];
 100       users = [ "immae" ];
 101       runAs = "root";
 102     }
 103   ];
 104
 105   system.activationScripts.libvirtd_exports = ''
 106     install -m 0755 -o root -g root -d /var/lib/caldance
 107   '';
 108   virtualisation.docker.enable = true;
 109   virtualisation.docker.storageDriver = "zfs";
 110   virtualisation.libvirtd.enable = true;
 111   users.extraUsers.immae.extraGroups = [ "libvirtd" "docker" ];
 112   systemd.services.libvirtd.postStart = ''
 113     install -m 0770 -g libvirtd -d /var/lib/libvirt/images
 114   '';
 115   systemd.services.socat-caldance = {
 116     description = "Forward ssh port to caldance";
 117     wantedBy = [ "multi-user.target" ];
 118     after = [ "network.target" ];
 119
 120     serviceConfig = {
 121       ExecStart = "${pkgs.socat}/bin/socat TCP-LISTEN:8022,fork TCP:nixops-99a7e1ba-54dc-11ea-a965-10bf487fe63b-caldance:22";
 122     };
 123   };
 124
 125   time.timeZone = "Europe/Paris";
 126   nix = {
 127     useSandbox = "relaxed";
 128     extraOptions = ''
 129       keep-outputs = true
 130       keep-derivations = true
 131       allow-unsafe-native-code-during-evaluation = true
 132       experimental-features = nix-command flakes
 133       #Assumed in NUR
 134       allow-import-from-derivation = true
 135     '';
 136   };
 137
 138   security.pki.certificateFiles = [
 139     (pkgs.fetchurl {
 140       url = "http://downloads.e.eriomem.net/eriomemca.pem";
 141       sha256 = "1ixx4c6j3m26j8dp9a3dkvxc80v1nr5aqgmawwgs06bskasqkvvh";
 142     })
 143   ];
 144
 145   # This is equivalent to setting environment.sessionVariables.NIX_PATH
 146   nix.nixPath = [
 147     "home-manager=${pkgs.sources.home-manager.url}"
 148     "nixpkgs=${pkgs.sources.nixpkgs-home-manager.url}"
 149   ];
 150   nix.binaryCaches = [ "https://hydra.iohk.io" "https://cache.nixos.org" ];
 151   nix.binaryCachePublicKeys = [ "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=" ];
 152
 153   myServices.monitoring.enable = true;
 154   myServices.certificates.enable = true;
 155   security.acme.certs."${name}" = {
 156     user = config.services.nginx.user;
 157     group = config.services.nginx.group;
 158     extraDomains = {
 159       "dev.immae.eu" = null;
 160       "caldance.immae.eu" = null;
 161     };
 162   };
 163   services.nginx = {
 164     enable = true;
 165     recommendedOptimisation = true;
 166     recommendedGzipSettings = true;
 167     recommendedProxySettings = true;
 168     upstreams = {
 169       caldance.servers."nixops-99a7e1ba-54dc-11ea-a965-10bf487fe63b-caldance:3031" = {};
 170     };
 171     virtualHosts = {
 172       "dev.immae.eu" = {
 173         acmeRoot = config.myServices.certificates.webroot;
 174         useACMEHost = name;
 175         forceSSL = true;
 176         root = "/home/immae/www";
 177       };
 178       "caldance.immae.eu" = {
 179         acmeRoot = config.myServices.certificates.webroot;
 180         useACMEHost = name;
 181         forceSSL = true;
 182         locations."/".extraConfig = ''
 183           uwsgi_pass caldance;
 184         '';
 185         locations."/static/".alias = "/var/lib/caldance/caldance/app/www/static/";
 186         locations."/media/".alias = "/var/lib/caldance/caldance/media/";
 187         extraConfig = ''
 188           auth_basic           "Authentification requise";
 189           auth_basic_user_file ${pkgs.writeText "htpasswd" config.myEnv.websites.caldance.integration.password};
 190         '';
 191       };
 192     };
 193   };
 194
 195   systemd.services.zrepl.serviceConfig.RuntimeDirectory = lib.mkForce "zrepl zrepl/stdinserver";
 196   systemd.services.zrepl.serviceConfig.User = "backup";
 197   # zfs allow backup create,mount,receive,destroy,rename,snapshot,hold,bookmark,release zpool/backup
 198   services.zrepl = {
 199     enable = true;
 200     config = ''
 201       global:
 202         control:
 203           sockpath: /run/zrepl/control
 204         serve:
 205           stdinserver:
 206             sockdir: /run/zrepl/stdinserver
 207       jobs:
 208         - type: sink
 209           # must not change
 210           name: "backup-from-eldiron"
 211           root_fs: "zpool/backup"
 212           serve:
 213             type: stdinserver
 214             client_identities:
 215               - eldiron
 216     '';
 217   };
 218   # This value determines the NixOS release with which your system is
 219   # to be compatible, in order to avoid breaking some software such as
 220   # database servers. You should change this only after NixOS release
 221   # notes say you should.
 222   # https://nixos.org/nixos/manual/release-notes.html
 223   system.stateVersion = "20.03"; # Did you read the comment?
 224 }
 225