System/machines/pendulum/configuration.nix

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

{
  imports = [ ./matrix.nix ];
  # Sops setup for this machine
  sops.secrets = {
    "borg-ssh-key" = {
      sopsFile = ../../secrets/pendulum/borg.yaml;
      format = "yaml";
    };
    "borg-password" = {
      sopsFile = ../../secrets/pendulum/borg.yaml;
      format = "yaml";
    };
    "matrix-secrets.yaml" = {
      owner = "matrix-synapse";
      format = "binary";
      sopsFile = ../../secrets/pendulum/recaptcha;
    };
  };
  # Setup system configuration
  nathan = {
    services = {
      nginx = {
        enable = true;
        acme = true;
      };
      matrix = {
        enable = true;
        baseDomain = "community.rs";
        enableRegistration = true;
      };
      borg = {
        enable = true;
        extraExcludes = [
          "*/.cache"
          "*/.tmp"
          "/var/lib/postgresql"
          "/var/lib/redis"
          "/var/lib/docker"
          "/var/log"
        ];
        passwordFile = config.sops.secrets."borg-password".path;
        sshKey = config.sops.secrets."borg-ssh-key".path;
      };
      postgresql.backup = true;
    };
    config = {
      setupGrub = false;
      nix = {
        autoUpdate = true;
        autoGC = true;
      };
      harden = false;
      virtualization = { docker = true; };
    };
  };
  # State version
  system.stateVersion = "23.05";
  # Postgres version and tuning
  services.postgresql = {
    package = pkgs.postgresql_15;
    settings = {
      shared_buffers = "4GB";
      effective_cache_size = "8GB";
      work_mem = "64MB";
      maintenance_work_mem = "128MB";
    };
  };
  # Configure bootloader
  boot.loader.grub.enable = true;
  boot.loader.grub.device = "/dev/sda";
  boot.loader.grub.useOSProber = true;
  # Configure networking
  networking = {
    domain = "mccarty.io";
    useDHCP = false;
    interfaces.enp1s0f0.ipv4.addresses = [{
      address = "45.83.129.50";
      prefixLength = 24;
    }];
    defaultGateway = "45.83.129.49";
    nameservers = [ "1.1.1.1" ];
    # Open ports in firewall
    firewall = {
      # allowedTCPPorts = [ 25565 ];
      # allowedUDPPorts = [ 25565 ];
    };
  };

  # Setup home manager
  home-manager.users.nathan = import ./home.nix;

}