nixos/modules/common/tailscale.nix
Jake Hillion eb72b6e468
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48 lines
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Nix

{ pkgs, lib, config, ... }:
{
options.tailscalePreAuth = lib.mkOption {
type = lib.types.str;
};
options.tailscaleAdvertiseRoutes = lib.mkOption {
type = lib.types.str;
default = "";
};
# make the tailscale command usable to users
config.environment.systemPackages = [ pkgs.tailscale ];
# enable the tailscale service
config.services.tailscale.enable = true;
config.systemd.services.tailscale-autoconnect = {
description = "Automatic connection to Tailscale";
# make sure tailscale is running before trying to connect to tailscale
after = [ "network-pre.target" "tailscale.service" ];
wants = [ "network-pre.target" "tailscale.service" ];
wantedBy = [ "multi-user.target" ];
# set this service as a oneshot job
serviceConfig.Type = "oneshot";
# have the job run this shell script
script = with pkgs; ''
# wait for tailscaled to settle
sleep 2
# check if we are already authenticated to tailscale
status="$(${tailscale}/bin/tailscale status -json | ${jq}/bin/jq -r .BackendState)"
if [ $status = "Running" ]; then # if so, then do nothing
exit 0
fi
# otherwise authenticate with tailscale
${tailscale}/bin/tailscale up \
--login-server https://ts.hillion.co.uk/ \
--authkey "$(<${config.tailscalePreAuth})" \
--advertise-routes "${config.tailscaleAdvertiseRoutes}"
'';
};
}