add panopticon

Signed-off-by: gwg313 <gwg313@pm.me>

hosts/panopticon/configuration.nix

@@ -0,0 +1,116 @@
+# Edit this configuration file to define what should be installed on
+# your system.  Help is available in the configuration.nix(5) man page
+# and in the NixOS manual (accessible by running ‘nixos-help’).
+{
+  config,
+  pkgs,
+  lib,
+  inputs,
+  ...
+}:
+{
+  # sops
+  sops = {
+    defaultSopsFile = ../../secrets/secrets.yaml;
+    defaultSopsFormat = "yaml";
+    age.keyFile = "/home/gwg313/.config/sops/age/keys.txt";
+  };
+  imports = [
+    # Include the results of the hardware scan.
+    ./hardware-configuration.nix
+    ../../common/nixos/ssh/default.nix
+    ./grafana.nix
+    ./promtail.nix
+    ./loki.nix
+    ./prometheus_node_exporter.nix
+    inputs.sops-nix.nixosModules.sops
+  ];
+
+  ssh.enable = true;
+  ssh_guard.enable = true;
+  ssh_client.enable = false;
+  services.openssh.authorizedKeysFiles = [
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINvOfDSjlvegGqfUS18XwXB7SvS2n9/hGYUpKxRb9vgb gwg313@pm.me"
+  ];
+  services.openssh.settings = {
+    PermitRootLogin = lib.mkForce "yes";
+
+    AllowUsers = lib.mkForce [
+      "gwg313"
+      "root"
+    ];
+  };
+
+  users.users.gwg313 = {
+    isNormalUser = true;
+    description = "gwg313";
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINvOfDSjlvegGqfUS18XwXB7SvS2n9/hGYUpKxRb9vgb gwg313@pm.me"
+    ];
+    extraGroups = [
+      "networkmanager"
+      "wheel"
+    ];
+    packages = with pkgs; [ ];
+  };
+
+  users.users = {
+    root = {
+      openssh.authorizedKeys.keys = [
+        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINvOfDSjlvegGqfUS18XwXB7SvS2n9/hGYUpKxRb9vgb gwg313@pm.me"
+      ];
+    };
+  };
+
+  # Bootloader.
+  boot.loader.grub.enable = true;
+  boot.loader.grub.device = "/dev/sda";
+  boot.loader.grub.useOSProber = true;
+  networking.hostName = "panopticon"; # Define your hostname.
+  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
+  # Configure network proxy if necessary
+  # networking.proxy.default = "http://user:password@proxy:port/";
+  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
+  # Enable networking
+  networking.networkmanager.enable = true;
+  # Set your time zone.
+  time.timeZone = "America/Toronto";
+  # Select internationalisation properties.
+  i18n.defaultLocale = "en_CA.UTF-8";
+  # Configure keymap in X11
+  services.xserver.xkb = {
+    layout = "us";
+    variant = "";
+  };
+  # Define a user account. Don't forget to set a password with ‘passwd’.
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;
+  # List packages installed in system profile. To search, run:
+  # $ nix search wget
+  environment.systemPackages = with pkgs; [
+    #  vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
+    #  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:
+  # 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;
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "24.11"; # Did you read the comment?
+}

hosts/panopticon/grafana.nix

@@ -0,0 +1,27 @@
+_: {
+  services.grafana = {
+    enable = true;
+    settings = {
+      server = {
+        http_addr = "127.0.0.1";
+        http_port = 3000;
+      };
+      security = {
+        admin_user = "admin";
+        admin_password = "changeme";
+      };
+    };
+
+    provision = {
+      datasources.settings.datasources = [
+        {
+          name = "Loki";
+          type = "loki";
+          access = "proxy";
+          url = "http://localhost:3100";
+          isDefault = true;
+        }
+      ];
+    };
+  };
+}

hosts/panopticon/hardware-configuration.nix

@@ -0,0 +1,43 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{
+  config,
+  lib,
+  pkgs,
+  modulesPath,
+  ...
+}:
+{
+  imports = [
+    (modulesPath + "/profiles/qemu-guest.nix")
+  ];
+
+  boot.initrd.availableKernelModules = [
+    "ata_piix"
+    "uhci_hcd"
+    "virtio_pci"
+    "virtio_scsi"
+    "sd_mod"
+    "sr_mod"
+  ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" = {
+    device = "/dev/disk/by-uuid/979e137f-7d21-4dac-b6eb-51c8add1cf48";
+    fsType = "ext4";
+  };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.ens18.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}

hosts/panopticon/loki.nix

@@ -0,0 +1,53 @@
+_: {
+  services.loki = {
+    enable = true;
+    configuration = {
+      auth_enabled = false;
+      server.http_listen_port = 3100;
+
+      ingester = {
+        lifecycler = {
+          ring = {
+            kvstore = {
+              store = "inmemory";
+            };
+          };
+          final_sleep = "0s";
+        };
+        chunk_idle_period = "5m";
+        max_chunk_age = "1h";
+        chunk_target_size = 1048576;
+      };
+
+      schema_config = {
+        configs = [
+          {
+            from = "2024-01-01";
+            store = "boltdb-shipper";
+            object_store = "filesystem";
+            schema = "v11";
+            index = {
+              prefix = "index_";
+              period = "24h";
+            };
+          }
+        ];
+      };
+
+      storage_config = {
+        boltdb_shipper = {
+          active_index_directory = "/var/lib/loki/index";
+          cache_location = "/var/lib/loki/cache";
+          shared_store = "filesystem";
+        };
+        filesystem = {
+          directory = "/var/lib/loki/chunks";
+        };
+      };
+
+      limits_config = {
+        retention_period = "168h";
+      };
+    };
+  };
+}

hosts/panopticon/prometheus_node_exporter.nix

@@ -0,0 +1,6 @@
+_: {
+  services.prometheus.exporters.node = {
+    enable = true;
+    openFirewall = true;
+  };
+}

hosts/panopticon/promtail.nix

@@ -0,0 +1,28 @@
+{ config, ... }:
+{
+  services.promtail = {
+    enable = true;
+    configuration = {
+      server.http_listen_port = 9080;
+      positions = {
+        filename = "/var/lib/promtail/positions.yaml";
+      };
+      clients = [
+        {
+          url = "http://localhost:3100/loki/api/v1/push";
+        }
+      ];
+      scrape_configs = [
+        {
+          job_name = "journal";
+          journal = {
+            labels = {
+              job = "systemd-journal";
+              host = config.networking.hostName;
+            };
+          };
+        }
+      ];
+    };
+  };
+}

hosts/panopticon/traefik.nix

@@ -0,0 +1,127 @@
+# Traefik
+{ config, ... }:
+{
+  imports = [
+  ];
+  sops.secrets.cf-api-token = {
+    mode = "0440";
+    owner = config.users.users.traefik.name;
+    group = config.users.users.traefik.group;
+  };
+
+  systemd.services.traefik.environment = {
+    CF_DNS_API_TOKEN_FILE = "${config.sops.secrets.cf-api-token.path}";
+  };
+
+  networking.firewall.allowedTCPPorts = [
+    80
+    443
+  ];
+
+  services.traefik = {
+    enable = true;
+    staticConfigOptions = {
+      serversTransport = {
+        insecureSkipVerify = true;
+      };
+      entryPoints = {
+        web = {
+          address = ":80";
+          http = {
+            redirections = {
+              entryPoint = {
+                to = "websecure";
+                scheme = "https";
+              };
+            };
+          };
+        };
+        websecure = {
+          address = ":443";
+          http = {
+            tls = {
+              options = "default";
+            };
+          };
+        };
+      };
+      api = {
+        dashboard = true;
+      };
+      certificatesResolvers = {
+        le = {
+          acme = {
+            email = "glen.goodwin@protonmail.com";
+            storage = "/var/lib/traefik/acme.json";
+            dnsChallenge = {
+              provider = "cloudflare";
+              resolvers = [ "1.1.1.1:53" ];
+            };
+          };
+        };
+      };
+      log = {
+        level = "DEBUG";
+        filePath = "/var/log/traefik/traefik.log";
+      };
+
+      accessLog = {
+        filePath = "/var/log/traefik/access.log";
+        bufferingSize = 0;
+        filters = { };
+        fields = {
+          defaultMode = "keep";
+          names = {
+            StartUTC = "drop";
+          };
+        };
+      };
+    };
+    dynamicConfigOptions = {
+      http = {
+        routers = {
+          dashboard = {
+            rule = "Host(`monitor.local.gwg313.xyz`)";
+            service = "api@internal";
+            middlewares = [
+              # "auth"
+              "headers"
+            ];
+            entrypoints = [ "websecure" ];
+            tls = {
+              certResolver = "le";
+            };
+          };
+        };
+        middlewares = {
+          headers = {
+            headers = {
+              browserxssfilter = true;
+              contenttypenosniff = true;
+              customframeoptionsvalue = "SAMEORIGIN";
+              forcestsheader = true;
+              framedeny = true;
+              sslhost = "gwg313.xyz";
+              sslredirect = true;
+              stsincludesubdomains = true;
+              stspreload = true;
+              stsseconds = "315360000";
+            };
+          };
+        };
+      };
+      tls = {
+        options = {
+          default = {
+            minVersion = "VersionTLS13";
+            sniStrict = true;
+            curvePreferences = [
+              "CurveP521"
+              "CurveP384"
+            ];
+          };
+        };
+      };
+    };
+  };
+}