change nixos -> nix

nix/modules/backups.nix

@@ -0,0 +1,129 @@
+{ pkgs, lib, config, ... }:
+let
+  cfg = config.lab.backups;
+  beforeEverything = pkgs.writeShellScriptBin "beforeEverything" ''
+    if [ -d "${cfg.snapshotLocation}" ]; then
+      ${pkgs.btrfs-progs}/bin/btrfs subvolume delete ${cfg.snapshotLocation}
+    fi
+
+    ${pkgs.btrfs-progs}/bin/btrfs subvolume snapshot -r ${cfg.subvolumeLocation} ${cfg.snapshotLocation}
+  '';
+
+  borgmaticConfig = pkgs.writeTextFile {
+    name = "borgmatic-config";
+    text = ''
+      source_directories:
+      - ${cfg.snapshotLocation}
+      repositories:
+      - path: ${cfg.repoLocation}
+        label: nfs
+      - path: ssh://s6969ym3@s6969ym3.repo.borgbase.com/./repo
+        label: ec2
+      exclude_patterns:
+        - ${cfg.snapshotLocation}/media
+      ssh_command: "${pkgs.openssh}/bin/ssh -i ${config.age.secrets."ec2_borg_server.pem".path} -o StrictHostKeychecking=no"
+      keep_daily: 7
+      keep_weekly: 4
+      keep_monthly: 6
+      encryption_passcommand: "${pkgs.coreutils}/bin/cat ''${BORG_PASSPHRASE_FILE}"
+      before_everything:
+      - ${beforeEverything}/bin/beforeEverything
+      postgresql_databases:
+      - name: nextcloud
+        hostname: lewis.dmz
+        username: nextcloud
+        password: ''${NEXTCLOUD_DATABASE_PASSWORD}
+        format: tar
+      - name: hedgedoc
+        hostname: lewis.dmz
+        username: hedgedoc
+        password: ''${HEDGEDOC_DATABASE_PASSWORD}
+        format: tar
+      - name: paperless
+        hostname: lewis.dmz
+        username: paperless
+        password: ''${PAPERLESS_DATABASE_PASSWORD}
+        format: tar
+    '';
+  };
+in
+{
+  options.lab.backups = {
+    enable = lib.mkOption {
+      default = false;
+      type = lib.types.bool;
+      description = ''
+        Whether to enable backups of persistent data on this machine.
+      '';
+    };
+
+    repoLocation = lib.mkOption {
+      default = "${config.lab.storage.dataMountPoint}/backups/nfs.borg";
+      type = lib.types.str;
+      description = ''
+        Location of the Borg repository to back up to.
+      '';
+    };
+
+    subvolumeLocation = lib.mkOption {
+      default = "${config.lab.storage.dataMountPoint}/nfs";
+      type = lib.types.str;
+      description = ''
+        Location of the btrfs subvolume holding the data.
+      '';
+    };
+
+    snapshotLocation = lib.mkOption {
+      default = "${config.lab.storage.dataMountPoint}/snapshot-nfs";
+      type = lib.types.str;
+      description = ''
+        Location to (temporary) create a snapshot of the subvolume.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    environment.systemPackages = with pkgs; [ borgbackup postgresql ];
+    # Converted from:
+    # https://github.com/borgmatic-collective/borgmatic/tree/84823dfb912db650936e3492f6ead7e0e0d32a0f/sample/systemd
+    systemd.services.borgmatic = {
+      description = "borgmatic backup";
+      wants = [ "network-online.target" ];
+      after = [ "network-online.target" ];
+      unitConfig.ConditionACPower = true;
+      preStart = "${pkgs.coreutils}/bin/sleep 10s";
+      path = with pkgs; [ postgresql ];
+
+      serviceConfig = {
+        Type = "oneshot";
+        Nice = 19;
+        CPUSchedulingPolicy = "batch";
+        IOSchedulingClass = "best-effort";
+        IOSchedulingPriority = 7;
+        IOWeight = 100;
+        Restart = "no";
+        LogRateLimitIntervalSec = 0;
+        EnvironmentFile = config.age.secrets."database_passwords.env".path;
+        Environment = "BORG_PASSPHRASE_FILE=${config.age.secrets."borg_passphrase".path}";
+      };
+
+      script = "${pkgs.systemd}/bin/systemd-inhibit --who=\"borgmatic\" --what=\"sleep:shutdown\" --why=\"Prevent interrupting scheduled backup\" ${pkgs.borgmatic}/bin/borgmatic --verbosity -2 --syslog-verbosity 1 -c ${borgmaticConfig}";
+    };
+
+    systemd.timers.borgmatic = {
+      description = "Run borgmatic backup";
+      wantedBy = [ "timers.target" ];
+      timerConfig = {
+        OnCalendar = "*-*-* 3:00:00";
+        Persistent = true;
+        RandomizedDelaySec = "3h";
+      };
+    };
+
+    age.secrets = {
+      "database_passwords.env".file = ../secrets/database_passwords.env.age;
+      "borg_passphrase".file = ../secrets/borg_passphrase.age;
+      "ec2_borg_server.pem".file = ../secrets/ec2_borg_server.pem.age;
+    };
+  };
+}

nix/modules/data-sharing.nix

@@ -0,0 +1,97 @@
+{ pkgs, lib, config, ... }:
+let
+  cfg = config.lab.data-sharing;
+
+  nfsShares = [
+    "/nextcloud/data"
+    "/radicale"
+    "/freshrss/data"
+    "/freshrss/extensions"
+    "/pihole/data"
+    "/pihole/dnsmasq"
+    "/hedgedoc/uploads"
+    "/traefik/acme"
+    "/forgejo"
+    "/kitchenowl/data"
+    "/syncthing/config"
+    "/paperless-ngx/data"
+    "/paperless-ngx/redisdata"
+    "/media"
+    "/media/books"
+    "/media/movies"
+    "/media/music"
+    "/media/shows"
+    "/jellyfin/config"
+    "/transmission/config"
+    "/jellyseerr/config"
+    "/radarr/config"
+    "/prowlarr/config"
+    "/sonarr/config"
+    "/bazarr/config"
+  ];
+
+  nfsExports = lib.strings.concatLines (
+    builtins.map
+      (share:
+        "${cfg.nfsRoot}${share} 192.168.30.0/${config.lab.networking.dmz.ipv4.prefixLength}(rw,sync,no_subtree_check,no_root_squash)"
+      )
+      nfsShares
+  );
+in
+{
+  options.lab.data-sharing = {
+    enable = lib.mkOption {
+      default = false;
+      type = lib.types.bool;
+      description = ''
+        Configure this server to serve our data using NFS and PostgreSQL.
+      '';
+    };
+
+    nfsRoot = lib.mkOption {
+      default = "/mnt/data/nfs";
+      type = lib.types.str;
+      description = ''
+        Root directory of NFS data.
+      '';
+    };
+
+    postgresDir = lib.mkOption {
+      default = "/mnt/data/postgresql/${config.services.postgresql.package.psqlSchema}";
+      type = lib.types.str;
+      description = ''
+        Postgresql data directory.
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    networking.firewall.interfaces.${config.lab.networking.dmz.bridgeName}.allowedTCPPorts = [
+      2049 # NFS
+      5432 # PostgeSQL
+      111 # NFS
+      20048 # NFS
+    ];
+
+    services = {
+      nfs.server = {
+        enable = true;
+        exports = nfsExports;
+      };
+
+      postgresql = {
+        enable = true;
+        package = pkgs.postgresql_15;
+        enableTCPIP = true;
+
+        dataDir = cfg.postgresDir;
+
+        authentication = ''
+          host	nextcloud	nextcloud	all	      md5
+          host	hedgedoc	hedgedoc	all	      md5
+          host	paperless	paperless	all	      md5
+        '';
+      };
+    };
+  };
+}

nix/modules/default.nix

@@ -0,0 +1,10 @@
+{
+  imports = [
+    ./storage.nix
+    ./ssh-certificates.nix
+    ./backups.nix
+    ./networking
+    ./data-sharing.nix
+    ./globals.nix
+  ];
+}

nix/modules/globals.nix

@@ -0,0 +1,89 @@
+{ lib, ... }: {
+  options.lab = {
+
+    networking = {
+      public = {
+        ipv4 = {
+          router = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              Public IPv4 address of the router.
+            '';
+          };
+        };
+
+        ipv6 = {
+          router = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              Publicly routable IPv6 address of the router.
+            '';
+          };
+        };
+      };
+
+      dmz = {
+        ipv4 = {
+          prefixLength = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              IPv4 prefix length of DMZ network.
+            '';
+          };
+
+          dockerSwarm = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              IPv4 address of the Docker Swarm in the DMZ.
+            '';
+          };
+
+
+          router = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              The router's IPv4 address on the DMZ network.
+            '';
+          };
+
+          services = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              The IPv4 address of the interface serving DHCP and DNS on the DMZ network.
+            '';
+          };
+        };
+
+        ipv6 = {
+          prefixLength = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              IPv6 prefix length of DMZ network.
+            '';
+          };
+
+          dockerSwarm = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              Globally routable IPv6 address of the Docker Swarm.
+            '';
+          };
+
+          router = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              The router's IPv6 address on the DMZ network.
+            '';
+          };
+
+          services = lib.mkOption {
+            type = lib.types.str;
+            description = ''
+              The IPv6 address of the interface serving DHCP and DNS on the DMZ network.
+            '';
+          };
+        };
+      };
+    };
+  };
+}

nix/modules/networking/default.nix

@@ -0,0 +1,167 @@
+{ lib, config, machine, ... }:
+let cfg = config.lab.networking;
+in {
+  imports = [ ./dmz_services ];
+
+  options.lab.networking = {
+    dmz = {
+      allowConnectivity = lib.mkOption {
+        default = false;
+        type = lib.types.bool;
+        description = ''
+          Whether to allow networking on the DMZ bridge interface.
+        '';
+      };
+
+      bridgeName = lib.mkOption {
+        default = "bridgedmz";
+        type = lib.types.str;
+        description = ''
+          The name of the DMZ bridge.
+        '';
+      };
+    };
+
+    staticNetworking = lib.mkOption {
+      default = false;
+      type = lib.types.bool;
+      description = ''
+        Whether this machine has static networking configuration applied.
+        Routing is prepopulated, but IP addresses have to be set.
+      '';
+    };
+
+    staticIPv4 = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        Static IPv4 address for the machine.
+      '';
+    };
+
+    staticIPv6 = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        Static IPv6 address for the machine.
+      '';
+    };
+  };
+
+  config = {
+    networking = {
+      domain = if machine.isPhysical then "hyp" else "dmz";
+      nftables.enable = true;
+      useDHCP = false;
+
+      firewall = {
+        enable = true;
+        checkReversePath = false;
+      };
+    };
+
+    systemd.network = {
+      enable = true;
+
+      netdevs = lib.mkIf machine.isHypervisor {
+        "20-vlandmz" = {
+          vlanConfig.Id = 30;
+
+          netdevConfig = {
+            Kind = "vlan";
+            Name = "vlandmz";
+          };
+        };
+
+        "20-bridgedmz" = {
+          netdevConfig = {
+            Kind = "bridge";
+            Name = cfg.dmz.bridgeName;
+          };
+        };
+      };
+
+      networks = lib.attrsets.mergeAttrsList [
+        (lib.optionalAttrs machine.isHypervisor {
+          "30-main-nic" = {
+            matchConfig.Name = "en*";
+            vlan = [ "vlandmz" ];
+
+            networkConfig = {
+              DHCP = "yes";
+            };
+          };
+
+          "40-vlandmz" = {
+            matchConfig.Name = "vlandmz";
+            linkConfig.RequiredForOnline = "enslaved";
+
+            networkConfig = {
+              IPv6AcceptRA = false;
+              LinkLocalAddressing = "no";
+              Bridge = cfg.dmz.bridgeName;
+            };
+          };
+
+          "40-bridgedmz" = {
+            matchConfig.Name = cfg.dmz.bridgeName;
+            linkConfig.RequiredForOnline = "carrier";
+
+            networkConfig = {
+              IPv6AcceptRA = cfg.dmz.allowConnectivity;
+              LinkLocalAddressing = if cfg.dmz.allowConnectivity then "ipv6" else "no";
+              DHCP = "yes";
+            };
+          };
+
+          "40-vms" = {
+            matchConfig.Name = "vm-*";
+            networkConfig.Bridge = cfg.dmz.bridgeName;
+          };
+        })
+        (lib.optionalAttrs machine.isVirtual {
+          "30-main-nic" = {
+            matchConfig.Name = "en*";
+
+            networkConfig = {
+              IPv6AcceptRA = ! cfg.staticNetworking;
+              DHCP = lib.mkIf (! cfg.staticNetworking) "yes";
+
+              Address = lib.mkIf cfg.staticNetworking [
+                "${cfg.staticIPv4}/${cfg.dmz.ipv4.prefixLength}"
+                "${cfg.staticIPv6}/${cfg.dmz.ipv6.prefixLength}"
+              ];
+
+              DNS = lib.mkIf cfg.staticNetworking [
+                cfg.dmz.ipv4.router
+                cfg.dmz.ipv6.router
+              ];
+            };
+
+            routes = lib.mkIf cfg.staticNetworking [
+              {
+                routeConfig = {
+                  Gateway = cfg.dmz.ipv4.router;
+                  Destination = "0.0.0.0/0";
+                };
+              }
+              {
+                routeConfig = {
+                  Gateway = cfg.dmz.ipv6.router;
+                  Destination = "::/0";
+                };
+              }
+            ];
+          };
+        })
+        (lib.optionalAttrs machine.isRaspberryPi {
+          "30-main-nic" = {
+            matchConfig.Name = "end*";
+            networkConfig = {
+              IPv6AcceptRA = true;
+              DHCP = "yes";
+            };
+          };
+        })
+      ];
+    };
+  };
+}

nix/modules/networking/dmz_services/default.nix

@@ -0,0 +1,73 @@
+# TODO: we should split this into DHCP and DNS
+# This decoupling makes it easier to put one service on another host.
+{ pkgs, lib, config, dns, ... }@inputs:
+let
+  cfg = config.lab.networking.dmz.services;
+
+  kunisZoneFile = pkgs.writeTextFile {
+    name = "kunis-zone-file";
+    text = (dns.lib.toString "kun.is" (import ./zones/kun.is.nix inputs));
+  };
+
+  geokunis2nlZoneFile = pkgs.writeTextFile {
+    name = "geokunis2nl-zone-file";
+    text = (dns.lib.toString "geokunis2.nl" (import ./zones/geokunis2.nl.nix inputs));
+  };
+in
+{
+  options.lab.networking.dmz.services.enable = lib.mkOption {
+    default = false;
+    type = lib.types.bool;
+    description = ''
+      Whether to enable an authoritative DNS server and DNSmasq for DMZ network.
+    '';
+  };
+
+  config = lib.mkIf cfg.enable {
+    # TODO Remove this; make this explicit in the machine config.
+    lab.networking.dmz.allowConnectivity = true;
+
+    # TODO: listen only on dmz interface, make this portable between physical and VM.
+    networking.firewall = {
+      allowedTCPPorts = [ 53 5353 ];
+      allowedUDPPorts = [ 53 67 5353 ];
+    };
+
+    services = {
+      bind = {
+        enable = true;
+        forwarders = [ ];
+
+        extraOptions = ''
+          allow-transfer { none; };
+          allow-recursion { none; };
+          version none;
+          notify no;
+        '';
+
+        zones = {
+          "kun.is" = {
+            master = true;
+            file = kunisZoneFile;
+            allowQuery = [ "any" ];
+          };
+
+          "geokunis2.nl" = {
+            master = true;
+            file = geokunis2nlZoneFile;
+            allowQuery = [ "any" ];
+            slaves = [
+              "87.253.155.96/27"
+              "157.97.168.160/27"
+            ];
+          };
+        };
+      };
+
+      dnsmasq = {
+        enable = true;
+        settings = import ./dnsmasq.nix inputs;
+      };
+    };
+  };
+}

nix/modules/networking/dmz_services/dnsmasq.nix

@@ -0,0 +1,50 @@
+{ config, ... }:
+let
+  cfg = config.lab.networking;
+in
+{
+  no-resolv = true;
+  local = "/dmz/";
+  dhcp-fqdn = true;
+  no-hosts = true;
+  expand-hosts = true;
+  domain = "dmz";
+  dhcp-authoritative = true;
+  ra-param = "*,0,0";
+  alias = "${cfg.public.ipv4.router},${cfg.dmz.ipv4.dockerSwarm}";
+  log-dhcp = true;
+  log-queries = true;
+  port = "5353";
+  host-record = [
+    "hermes.dmz,${cfg.dmz.ipv4.services},${cfg.dmz.ipv6.services}"
+    "ipv4.hermes.dmz,${cfg.dmz.ipv4.services}" # TODO: Do we need these?
+    "ipv6.hermes.dmz,${cfg.dmz.ipv6.services}"
+  ];
+
+  server = [
+    cfg.dmz.ipv4.router
+    "/geokunis2.nl/${cfg.dmz.ipv4.services}"
+    "/kun.is/${cfg.dmz.ipv4.services}"
+  ];
+
+  dhcp-range = [
+    "192.168.30.50,192.168.30.127,15m"
+    "2a0d:6e00:1a77:30::,ra-stateless,ra-names"
+  ];
+
+  dhcp-host = [
+    "b8:27:eb:b9:ab:e2,esrom"
+    "ba:db:ee:f0:00:01,maestro,${cfg.dmz.ipv4.dockerSwarm}"
+  ];
+
+  dhcp-option = [
+    "3,${cfg.dmz.ipv4.router}"
+    "option:dns-server,${cfg.dmz.ipv4.router}"
+    "option6:dns-server,[2a02:58:19a:30::1]"
+  ];
+
+  address = [
+    "/ns.pizzapim.nl/ns.geokunis2.nl/${cfg.dmz.ipv4.services}"
+    "/ns.pizzapim.nl/ns.geokunis2.nl/${cfg.dmz.ipv6.services}"
+  ];
+}

nix/modules/networking/dmz_services/zones/geokunis2.nl.nix

@@ -0,0 +1,41 @@
+{ config, dns, ... }:
+with dns.lib.combinators;
+let
+  cfg = config.lab.networking;
+in
+{
+  SOA = {
+    nameServer = "ns";
+    adminEmail = "hostmaster@geokunis2.nl";
+    serial = 2024020500;
+  };
+
+  NS = [
+    "ns.geokunis2.nl."
+    "ns0.transip.net."
+    "ns1.transip.nl."
+    "ns2.transip.eu."
+  ];
+
+  MX = [ (mx.mx 10 "mail.geokunis2.nl.") ];
+
+  CAA = letsEncrypt "caa@geokunis2.nl";
+
+  subdomains = {
+    ns = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ cfg.dmz.ipv6.services ];
+    };
+
+    ns1 = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ cfg.dmz.ipv6.services ];
+    };
+
+    ns2 = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ cfg.dmz.ipv6.services ];
+    };
+
+  };
+}

nix/modules/networking/dmz_services/zones/kun.is.nix

@@ -0,0 +1,77 @@
+{ config, dns, ... }:
+with dns.lib.combinators;
+let
+  cfg = config.lab.networking;
+in
+{
+  CAA = letsEncrypt "caa@kun.is";
+
+  SOA = {
+    nameServer = "ns1";
+    adminEmail = "webmaster@kun.is";
+    serial = 2024021702;
+  };
+
+  NS = [
+    "ns1.kun.is."
+    "ns2.kun.is."
+  ];
+
+  MX = [
+    (mx.mx 10 "mail.kun.is.")
+  ];
+
+  subdomains = {
+    "*" = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ cfg.dmz.ipv6.dockerSwarm ];
+    };
+
+    ns = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ cfg.dmz.ipv6.services ];
+    };
+
+    ns1 = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ cfg.dmz.ipv6.services ];
+    };
+
+    ns2 = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ cfg.dmz.ipv6.services ];
+    };
+
+    # Override because we don't support IPv6 for Git SSH.
+    git = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ ];
+    };
+
+    # Override because we don't support IPv6 for KMS.
+    kms = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ ];
+    };
+
+    # Override because wg is on opnsense so ipv6 differs from "cfg.dmz.ipv6.services"
+    wg = {
+      A = [ cfg.public.ipv4.router ];
+      AAAA = [ cfg.dmz.ipv6.router ];
+    };
+
+#for SMTP2GO to be able send emails from kun.is domain
+    em670271 = {
+      CNAME = ["return.smtp2go.net."];
+    };
+
+    "s670271._domainkey" = {
+      CNAME = ["dkim.smtp2go.net."];
+    };
+
+    link = {
+      CNAME = ["track.smtp2go.net."];
+    };
+
+  };
+}

nix/modules/ssh-certificates.nix

@@ -0,0 +1,70 @@
+{ lib, config, ... }:
+let
+  cfg = config.lab.ssh;
+  hostCert = builtins.toFile "host_ed25519-cert.pub" cfg.hostCert;
+  userCert = builtins.toFile "user_ed25519-cert.pub" cfg.userCert;
+in
+{
+  options.lab.ssh = {
+    useCertificates = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      description = ''
+        Whether to use certificates at all.
+      '';
+    };
+
+    hostCert = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        SSH host certificate
+      '';
+    };
+
+    userCert = lib.mkOption {
+      type = lib.types.str;
+      description = ''
+        SSH user certificate
+      '';
+    };
+
+    hostKey = lib.mkOption {
+      default =
+        ../secrets/${config.networking.hostName}_host_ed25519.age;
+      type = lib.types.path;
+      description = ''
+        SSH host key
+      '';
+    };
+
+    userKey = lib.mkOption {
+      default =
+        ../secrets/${config.networking.hostName}_user_ed25519.age;
+      type = lib.types.path;
+      description = ''
+        SSH user key
+      '';
+    };
+  };
+
+  config = lib.mkIf cfg.useCertificates {
+    services.openssh = {
+      extraConfig = ''
+        HostCertificate ${hostCert}
+        HostKey ${config.age.secrets.host_ed25519.path}
+      '';
+    };
+
+    programs.ssh = {
+      extraConfig = ''
+        CertificateFile ${userCert}
+        IdentityFile ${config.age.secrets.user_ed25519.path}
+      '';
+    };
+
+    age.secrets = {
+      "host_ed25519".file = cfg.hostKey;
+      "user_ed25519".file = cfg.userKey;
+    };
+  };
+}

nix/modules/storage.nix

@@ -0,0 +1,80 @@
+{ lib, config, machine, ... }:
+let cfg = config.lab.storage;
+in {
+  options.lab.storage = {
+    osDisk = lib.mkOption {
+      type = with lib.types; nullOr str;
+      description = ''
+        The disk to be used for the machine's operating system.
+      '';
+    };
+
+    dataPartition = lib.mkOption {
+      default = null;
+      type = lib.types.nullOr lib.types.str;
+      description = ''
+        Partition to be used for data storage on this machine.
+      '';
+    };
+
+    dataMountPoint = lib.mkOption {
+      default = "/mnt/data";
+      type = lib.types.str;
+      description = ''
+        Mount point of the machine's data partition.
+      '';
+    };
+  };
+
+  config = {
+    fileSystems = lib.attrsets.mergeAttrsList [
+      (lib.optionalAttrs machine.isHypervisor {
+        "${cfg.dataMountPoint}".device = cfg.dataPartition;
+      })
+      (lib.optionalAttrs machine.isRaspberryPi {
+        "/" = {
+          device = "/dev/disk/by-label/NIXOS_SD";
+          fsType = "ext4";
+          options = [ "noatime" ];
+        };
+      })
+    ];
+
+    disko = lib.mkIf machine.isHypervisor {
+      # TODO: Rename this to 'osDisk'. Unfortunately, we would need to run nixos-anywhere again then.
+      devices.disk.vdb = {
+        device = cfg.osDisk;
+        type = "disk";
+
+        content = {
+          type = "gpt";
+
+          partitions = {
+            swap.size = "100%";
+
+            ESP = {
+              type = "EF00";
+              size = "500M";
+
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+              };
+            };
+
+            root = {
+              end = "-4G";
+
+              content = {
+                type = "filesystem";
+                format = "btrfs";
+                mountpoint = "/";
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

nix/modules/terraform-database/postgresql_server.crt

@@ -0,0 +1,67 @@
+Certificate:
+    Data:
+        Version: 1 (0x0)
+        Serial Number:
+            ef:2f:4d:d4:26:7e:33:1b
+    Signature Algorithm: sha256WithRSAEncryption
+        Issuer: CN=jefke.hyp
+        Validity
+            Not Before: Nov 22 19:12:03 2023 GMT
+            Not After : Oct 29 19:12:03 2123 GMT
+        Subject: CN=jefke.hyp
+        Subject Public Key Info:
+            Public Key Algorithm: rsaEncryption
+                RSA Public-Key: (2048 bit)
+                Modulus:
+                    00:c7:ab:eb:9c:d0:7f:4f:f1:ba:65:0a:8b:07:7b:
+                    2e:5b:f0:26:82:33:c9:73:e6:91:cc:11:94:05:1c:
+                    8d:67:29:cb:5e:67:35:02:80:54:af:99:4b:aa:ce:
+                    e8:56:62:be:63:cb:b2:4a:b0:a9:28:12:e2:77:50:
+                    7d:d5:d2:3b:48:d8:32:59:25:26:ff:a6:5c:f6:eb:
+                    ae:5b:3d:7a:14:10:ba:90:9c:6f:1f:b9:d8:99:0e:
+                    b7:09:5e:62:69:c4:c0:c6:27:b0:d3:60:0d:47:4c:
+                    a5:11:53:f2:f1:4a:f9:a6:bc:d6:a3:35:a2:e8:e5:
+                    a9:d1:60:e8:e5:18:ce:d2:60:80:4e:dc:48:ae:7f:
+                    b7:ea:76:51:28:39:a4:b0:95:82:95:93:98:b2:9f:
+                    23:c9:81:69:59:a3:e4:f7:5a:1c:01:31:96:c1:4b:
+                    59:21:f8:a2:e6:9e:21:78:0e:6b:c1:68:c7:5c:16:
+                    9a:06:54:df:b6:77:1d:2d:89:d0:c8:9e:db:b5:d4:
+                    8c:fb:b9:4f:b7:6e:39:5f:39:8e:48:73:76:7d:46:
+                    6e:1f:8d:14:cb:40:b5:ff:c6:f0:c0:44:3c:ed:52:
+                    3f:4f:7b:69:63:93:c6:41:e6:5e:ed:33:50:20:46:
+                    db:93:bf:e8:52:51:95:f1:81:73:58:da:67:21:7b:
+                    12:bd
+                Exponent: 65537 (0x10001)
+    Signature Algorithm: sha256WithRSAEncryption
+         aa:5c:89:41:a6:b7:3d:65:87:ca:50:c4:f3:58:aa:d3:b4:55:
+         b1:a7:8d:18:26:17:e5:8a:21:24:a1:49:53:77:31:5b:55:63:
+         be:01:d8:fe:b7:06:7c:da:07:1f:94:6a:de:96:ad:ca:3b:20:
+         2a:e1:35:90:19:83:6d:37:d1:15:12:de:3c:0e:46:be:66:a1:
+         6a:1d:ec:72:dc:46:79:69:e4:af:77:c8:ff:cd:d6:7d:16:88:
+         ab:44:fd:70:fc:40:47:ff:43:95:11:5a:9a:56:0c:d2:dd:7c:
+         3b:87:aa:10:26:fa:25:a3:a0:43:8a:1b:ec:54:11:7e:65:67:
+         d2:06:e1:3e:3b:e1:0e:b0:80:ef:4b:35:3f:fc:34:1d:95:2e:
+         ee:c1:67:38:da:b3:74:86:4b:95:8c:0c:1d:51:28:c1:42:e9:
+         77:68:d7:ec:3b:66:30:c6:e5:2a:62:ea:15:fb:24:56:cf:02:
+         d0:25:54:a7:58:15:b5:2a:71:93:56:c0:69:7a:36:18:6c:31:
+         b1:8e:3c:77:d7:77:ac:fc:e1:94:c5:08:bb:35:ac:48:5f:6b:
+         8b:c8:c8:78:f4:a9:ca:4f:9d:51:54:89:97:c9:af:a1:fa:71:
+         df:58:f6:ff:04:7c:c8:1c:95:6b:1a:e3:a7:f6:43:1c:27:94:
+         10:03:ce:ec
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----