nixos-config/atauno/configuration.nix

# Edit this configuration file to define what should be installed on
# your system. Help is available in the configuration.nix(5) man page, on
# https://search.nixos.org/options and in the NixOS manual (`nixos-help`).

{ config, lib, pkgs, ... }:

{
  imports =
    [
      # Include the results of the hardware scan.
      ./hardware-configuration.nix
    ];

  nix.settings.experimental-features = [ "nix-command" "flakes" ];
  nixpkgs.config.allowUnfree = true;

  # Use the systemd-boot EFI boot loader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  boot.supportedFilesystems = [ "zfs" ];
  boot.zfs.extraPools = [ "alex1" ];
  boot.zfs.forceImportRoot = false;

  networking.hostName = "atauno"; # Define your hostname.
  networking.hostId = "ae3574b1"; # for zfs importing pools during boot

  # Set your time zone.
  time.timeZone = "America/New_York";

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users = {
    alex = {
      isNormalUser = true;
      extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
      packages = with pkgs; [ git ];
    };
    matson = {
      isNormalUser = true;
      extraGroups = [ ];
    };
  };

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    magic-wormhole
    nfs-utils
    vim
    wireguard-tools
  ];

  # List services that you want to enable:
  services.k3s.enable = true;
  services.k3s.role = "server";
  services.k3s.extraFlags = toString [
    # "--kubelet-arg=v=4" # Optionally add additional args to k3s
    "--tls-san=atauno.com"
  ];

  # services.nfs.server.enable = true;

  services.samba-wsdd = {
    # make shares visible for Windows clients
    enable = true;
    openFirewall = true;
  };

  services.samba = {
    enable = true;
    securityType = "user";
    extraConfig = ''
      workgroup = WORKGROUP
      server string = atauno
      netbios name = atauno
      security = user 
      #use sendfile = yes
      #max protocol = smb2
      # note: localhost is the ipv6 localhost ::1
      hosts allow = 192.168.1. 127.0.0.1 localhost
      hosts deny = 0.0.0.0/0
      guest account = nobody
      map to guest = bad user
    '';
    shares = {
      family = {
        path = "/zfs/family";
        browseable = "yes";
        "read only" = "no";
        "guest ok" = "no";
        "force create mode" = 774;
        "force user" = "matson";
        "force group" = "users";
      };
    };
  };

  # Enable the OpenSSH daemon.
  services.openssh.enable = true;

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  networking.firewall.enable = false;

  # enable NAT
  networking.nat.enable = true;
  networking.nat.externalInterface = "enp42s0";
  networking.nat.internalInterfaces = [ "wg0" ];
  networking.firewall = {
    allowedUDPPorts = [ 51820 ];
  };

  networking.wireguard.interfaces = {
    # "wg0" is the network interface name. You can name the interface arbitrarily.
    wg0 = {
      # Determines the IP address and subnet of the server's end of the tunnel interface.
      ips = [ "10.100.0.1/32" ];

      # The port that WireGuard listens to. Must be accessible by the client.
      listenPort = 51820;

      # This allows the wireguard server to route your traffic to the internet and hence be like a VPN
      # For this to work you have to set the dnsserver IP of your router (or dnsserver of choice) in your clients
      postSetup = ''
        ${pkgs.iptables}/bin/iptables -t nat -A POSTROUTING -s 10.100.0.0/24 -o eth0 -j MASQUERADE
      '';

      # This undoes the above command
      postShutdown = ''
        ${pkgs.iptables}/bin/iptables -t nat -D POSTROUTING -s 10.100.0.0/24 -o eth0 -j MASQUERADE
      '';

      # Path to the private key file.
      #
      # Note: The private key can also be included inline via the privateKey option,
      # but this makes the private key world-readable; thus, using privateKeyFile is
      # recommended.
      privateKeyFile = "/home/alex/wireguard-keys/private";

      peers = [
        # List of allowed peers.
        {
          # Feel free to give a meaning full name
          # Public key of the peer (not a file path).
          # nixos76 laptop
          publicKey = "KVViY+Bgu7PoBeS+rthcyQVQB03IdolxDzc5ZwsdNnM=";
          # List of IPs assigned to this peer within the tunnel subnet. Used to configure routing.
          allowedIPs = [ "10.100.0.2/32" ];
        }
        {
          # josh's laptop
          publicKey = "MdHzEaX6BkgOLZcIAFdgxYt0iDdh2vL25jMjuTFVDVM=";
          allowedIPs = [ "10.100.0.3/32" ];
        }
        {
          # alex android op9t
          publicKey = "zVEFb82M79UoBpAkgbiN0MWQqcjmChTFDLQOSRY/VRk=";
          allowedIPs = [ "10.100.0.4/32" ];
        }
      ];
    };
  };

  # Copy the NixOS configuration file and link it from the resulting system
  # (/run/current-system/configuration.nix). This is useful in case you
  # accidentally delete configuration.nix.
  # system.copySystemConfiguration = true;

  # This option defines the first version of NixOS you have installed on this particular machine,
  # and is used to maintain compatibility with application data (e.g. databases) created on older NixOS versions.
  #
  # Most users should NEVER change this value after the initial install, for any reason,
  # even if you've upgraded your system to a new NixOS release.
  #
  # This value does NOT affect the Nixpkgs version your packages and OS are pulled from,
  # so changing it will NOT upgrade your system - see https://nixos.org/manual/nixos/stable/#sec-upgrading for how
  # to actually do that.
  #
  # This value being lower than the current NixOS release does NOT mean your system is
  # out of date, out of support, or vulnerable.
  #
  # Do NOT change this value unless you have manually inspected all the changes it would make to your configuration,
  # and migrated your data accordingly.
  #
  # For more information, see `man configuration.nix` or https://nixos.org/manual/nixos/stable/options#opt-system.stateVersion .
  system.stateVersion = "24.05"; # Did you read the comment?

}