homelab-config/nixos/configuration.nix

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

{
  imports = [ ];

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

  # Secret Management
  sops = {
    # make sure that the age key is generated from the persisted host key
    age = {
      sshKeyPaths = [ "/persist/etc/ssh/ssh_host_ed25519_key" ];
      keyFile = "/persist/var/lib/sops-nix/key.txt";
      generateKey = true;
    };

    # I prefer to use json format for the secrets
    defaultSopsFormat = "json";

    # Define file and key for each secret
    secrets = {
      "cloudflare-api-email" = {
        sopsFile = ./secrets/cloudflare.json;
        key = "CF_API_EMAIL";
      };

      "cloudflare-api-key" = {
        sopsFile = ./secrets/cloudflare.json;
        key = "CF_API_KEY";
      };

      "minio-root-pass" = {
        sopsFile = ./secrets/minio.json;
        key = "minioPass";
      };
    };
  };

  systemd.user.services.mbsync.unitConfig.After = [ "sops-nix.service" ];
  fileSystems."/persist".neededForBoot = true;

  # Set up https certs via cloudflare/acme
  security.acme = {
    acceptTerms = true;
    defaults = {
      email = "roydumblauskas@gmail.com";
      dnsProvider = "cloudflare";
      credentialFiles = {
        CF_API_EMAIL_FILE = config.sops.secrets."cloudflare-api-email".path;
        CF_API_KEY_FILE = config.sops.secrets."cloudflare-api-key".path;
      };
    };
  };

  # Setup vhosts via nginx
  services.nginx = {
    enable = true;
    
    virtualHosts."roypository.com" = {
      forceSSL = true;
      enableACME = true; 
      acmeRoot = null;
    };
  };

  # Declare test service manually
  services.tests-service = {
    enable = true;
    port = 8080;
    default-nginx = {
      enable = true;
      hostname = "test.roypository.com";
    };
  };

  # Declare minio service manually

  # Grub Boot Loader Setup
  boot.loader = {
    efi = {
      canTouchEfiVariables = true;
      efiSysMountPoint = "/boot/efi";
    };
    grub = {
      efiSupport = true;
      device = "nodev";
      configurationLimit = 3;
    };
  };

  # Rollback root on reboot
  boot.initrd.postMountCommands = lib.mkAfter ''
    zfs rollback -r zroot/root@blank
  '';
  
  networking = {
    hostName = meta.hostname;
    hostId = meta.hostId;
    defaultGateway = "192.168.1.1";
    nameservers = [ "1.1.1.1" "1.0.0.1" ];

    firewall = {
      enable = true;
      allowedTCPPorts = [ 22 80 443];
    };

    interfaces.eth0.ipv4.addresses = [
      {
        address = config.ipAddrs.${meta.hostname};
        prefixLength = 24;
      }
    ];
  };

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

  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";

  # Select internationalisation properties.
  # i18n.defaultLocale = "en_US.UTF-8";
  # console = {
  #   font = "Lat2-Terminus16";
  #   keyMap = "us";
  #   useXkbConfig = true; # use xkb.options in tty.
  # };

  # Enable the X11 windowing system.
  # services.xserver.enable = true;

  # Configure keymap in X11
  # services.xserver.xkb.layout = "us";
  # services.xserver.xkb.options = "eurosign:e,caps:escape";

  # Enable CUPS to print documents.
  services.printing.enable = true;

  # Enable sound.
  # hardware.pulseaudio.enable = true;
  # OR
  # services.pipewire = {
  #   enable = true;
  #   pulse.enable = true;
  # };


  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.sysAdmin = {
    isNormalUser = true;
    extraGroups = [ "wheel" "networkManager" ];
    # created with mkpasswd
    hashedPassword = "$6$8KRJ44z15XsQALM.$J4geTLaph7ynaLimlYXMGafqPOP6DONLSlTbRowH7JF7WJ4cWyMSTYQQB4OwsAgPpLCTYDzpqn6a/pfIizWFA.";
    openssh.authorizedKeys.keys = [
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMu8YZ/m8xl7bq9NxtXjywm1T1u2WMMmEmTppWCR9xGB roydumblauskas@gmail.com"
    ];
  };

  users.users.root = {
    hashedPassword = "$y$j9T$IjaP0KIfdpEvlLtOn.u0T/$0MJDaFEdSu6zSJ04CF1dtorD6IVgbN3vmDiiwGwwqr5";
    openssh.authorizedKeys.keys = [
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMu8YZ/m8xl7bq9NxtXjywm1T1u2WMMmEmTppWCR9xGB roydumblauskas@gmail.com" 
    ];
  };

  # Symlink the user directories that need to be persisted (ssh key/repository folder)
  environment.persistence."/persist" = {
    users = {
      sysAdmin.directories = [
        ".ssh"
        "rp"
      ];
    };

    directories = [
      "/root/.ssh"
      "/var/lib/nixos"
    ];
  };

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    curl
    kitty
    vim
    wget
  ];


  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # programs.mtr.enable = true;
  # programs.gnupg.agent = {
  #   enable = true;
  #   enableSSHSupport = true;
  # };

  # List services that you want to enable:
  services.openssh = {
    enable = true;
    hostKeys = [
      {
        type = "ed25519";
        path = "/persist/etc/ssh/ssh_host_ed25519_key";
      }
      {
        type = "rsa";
        bits = 4096;
        path = "/persist/etc/ssh/ssh_host_rsa_key";
      }
    ];
  };

  # INITIAL system version
  system.stateVersion = "24.11";

}