{ config, pkgs, ... }:
{
environment.systemPackages = [ pkgs.tailscale ];
services.tailscale.enable = true;
networking.firewall = {
enable = true;
trustedInterfaces = [ "tailscale0" ];
allowedUDPPorts = [ config.services.tailscale.port ];
allowedTCPPorts = [ 22 ];
};
# create a oneshot job to authenticate to Tailscale
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 -authkey tskey-PASTE-ONE-SHOT-KEY
'';
};
}