nixos/tailscale-derper: init (#306533) (689b9903) · Commits · nix / nixpkgs

nixos/modules/module-list.nix

+1 −0

Original line number	Diff line number	Diff line
		@@ -1231,6 +1231,7 @@
		./services/networking/syncthing.nix
		./services/networking/tailscale.nix
		./services/networking/tailscale-auth.nix
		./services/networking/tailscale-derper.nix
		./services/networking/tayga.nix
		./services/networking/tcpcrypt.nix
		./services/networking/teamspeak3.nix

nixos/modules/services/networking/tailscale-derper.nix

0 → 100644

+132 −0

Original line number	Diff line number	Diff line
		{
		config,
		lib,
		pkgs,
		...
		}:

		let
		cfg = config.services.tailscale.derper;
		in
		{
		meta.maintainers = with lib.maintainers; [ SuperSandro2000 ];

		options = {
		services.tailscale.derper = {
		enable = lib.mkEnableOption "Tailscale Derper. See upstream doc <https://tailscale.com/kb/1118/custom-derp-servers> how to configure it on clients";

		domain = lib.mkOption {
		type = lib.types.str;
		description = "Domain name under which the derper server is reachable.";
		};

		openFirewall = lib.mkOption {
		type = lib.types.bool;
		default = true;
		description = ''
		Whether to open the firewall for the specified port.
		Derper requires the used ports to be opened, otherwise it doesn't work as expected.
		'';
		};

		package = lib.mkPackageOption pkgs [
		"tailscale"
		"derper"
		] { };

		stunPort = lib.mkOption {
		type = lib.types.port;
		default = 3478;
		description = ''
		STUN port to listen on.
		See online docs <https://tailscale.com/kb/1118/custom-derp-servers#prerequisites> on how to configure a different external port.
		'';
		};

		port = lib.mkOption {
		type = lib.types.port;
		default = 8010;
		description = "The port the derper process will listen on. This is not the port tailscale will connect to.";
		};

		verifyClients = lib.mkOption {
		type = lib.types.bool;
		default = false;
		description = ''
		Whether to verify clients against a locally running tailscale daemon if they are allowed to connect to this node or not.
		'';
		};
		};
		};

		config = lib.mkIf cfg.enable {
		networking.firewall = lib.mkIf cfg.openFirewall {
		# port 80 and 443 are opened by nginx already
		allowedUDPPorts = [ cfg.stunPort ];
		};

		services = {
		nginx = {
		enable = true;
		upstreams.tailscale-derper = {
		servers."127.0.0.1:${toString cfg.port}" = { };
		extraConfig = ''
		keepalive 64;
		'';
		};
		virtualHosts."${cfg.domain}" = {
		addSSL = true; # this cannot be forceSSL as derper sends some information over port 80, too.
		locations."/" = {
		proxyPass = "http://tailscale-derper";
		proxyWebsockets = true;
		extraConfig = ''
		keepalive_timeout 0;
		proxy_buffering off;
		'';
		};
		};
		};

		tailscale.enable = lib.mkIf cfg.verifyClients true;
		};

		systemd.services.tailscale-derper = {
		serviceConfig = {
		ExecStart =
		"${lib.getExe' cfg.package "derper"} -a :${toString cfg.port} -c /var/lib/derper/derper.key -hostname=${cfg.domain} -stun-port ${toString cfg.stunPort}"
		+ lib.optionalString cfg.verifyClients " -verify-clients";
		DynamicUser = true;
		Restart = "always";
		RestartSec = "5sec"; # don't crash loop immediately
		StateDirectory = "derper";
		Type = "simple";

		CapabilityBoundingSet = [ "" ];
		DeviceAllow = null;
		LockPersonality = true;
		NoNewPrivileges = true;
		MemoryDenyWriteExecute = true;
		PrivateDevices = true;
		PrivateUsers = true;
		ProcSubset = "pid";
		ProtectClock = true;
		ProtectControlGroups = true;
		ProtectHostname = true;
		ProtectKernelLogs = true;
		ProtectKernelModules = true;
		ProtectKernelTunables = true;
		ProtectProc = "invisible";
		RestrictAddressFamilies = [
		"AF_INET"
		"AF_INET6"
		"AF_UNIX"
		];
		RestrictNamespaces = true;
		RestrictRealtime = true;
		SystemCallArchitectures = "native";
		SystemCallFilter = [ "@system-service" ];
		};
		wantedBy = [ "multi-user.target" ];
		};
		};
		}

pkgs/servers/tailscale/default.nix

+4 −1

Original line number	Diff line number	Diff line
		@@ -21,6 +21,8 @@ buildGoModule {
		pname = "tailscale";
		inherit version;

		outputs = [ "out" "derper" ];

		src = fetchFromGitHub {
		owner = "tailscale";
		repo = "tailscale";
		@@ -43,7 +45,7 @@ buildGoModule {

		CGO_ENABLED = 0;

		subPackages = [ "cmd/tailscaled" ];
		subPackages = [ "cmd/derper" "cmd/tailscaled" ];

		ldflags = [
		"-w"
		@@ -60,6 +62,7 @@ buildGoModule {

		postInstall = ''
		ln -s $out/bin/tailscaled $out/bin/tailscale
		moveToOutput "bin/derper" "$derper"
		'' + lib.optionalString stdenv.hostPlatform.isLinux ''
		wrapProgram $out/bin/tailscaled \
		--prefix PATH : ${lib.makeBinPath [ iproute2 iptables getent shadow ]} \