75 lines
2 KiB
Nix
75 lines
2 KiB
Nix
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{
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config,
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inputs,
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lib,
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pkgs,
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...
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}:
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with lib;
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let
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cat = "${pkgs.coreutils}/bin/cat";
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tailscale = "${config.services.tailscale.package}/bin/tailscale";
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cfg = config.custom.services.tailscale;
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in
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{
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# TODO: Enact recommendations
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# https://tailscale.com/kb/1320/performance-best-practices
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# https://github.com/tailscale/tailscale
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#!! Configuration is imperative
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#?? sudo tailscale up --ssh --advertise-exit-node --accept-routes --operator=$USER --reset --qr
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options.custom.services.tailscale = {
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enable = mkOption { default = false; };
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cert = mkOption { default = false; };
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};
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# TODO: Use caddy plugin for provisioning when supported by NixOS
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# https://github.com/NixOS/nixpkgs/pull/317881
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# https://github.com/tailscale/caddy-tailscale
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config = mkIf cfg.enable {
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age.secrets =
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let
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secret = filename: {
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file = "${inputs.self}/secrets/${filename}";
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};
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in
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{
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"common/tailscale/tailnet" = secret "common/tailscale/tailnet";
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};
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services.tailscale = {
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enable = true;
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#// permitCertUid = mkIf cfg.cert "caddy"; # Allow caddy to fetch TLS certificates
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useRoutingFeatures = "both"; # Enable server/client exit nodes
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};
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# Provision Tailscale certificates in the background per machine
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systemd =
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let
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hostname = config.custom.hostname;
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in
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mkIf cfg.cert {
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#!! Needs to be run on the machine
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# tailscale cert always writes to /var/lib/tailscale/certs/ regardless of flags
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services."tailscale-cert-${hostname}".script = concatStringsSep " " [
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"${tailscale} cert"
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"--cert-file -"
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"--key-file -"
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"${hostname}.\"$(${cat} ${config.age.secrets."common/tailscale/tailnet".path})\""
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"> /dev/null"
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];
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timers."tailscale-cert-${hostname}" = {
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wantedBy = [ "timers.target" ];
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timerConfig = {
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OnCalendar = "daily";
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Persistent = true; # Retry if previous timer missed
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};
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};
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};
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};
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}
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