nix-config/nixos/_mixins/services/tailscale-autoconnect.nix
2024-05-23 15:02:20 -04:00

39 lines
1.2 KiB
Nix

{ config, pkgs, ... }:
{
imports = [ ./tailscale.nix ];
# Mounts the secrets file
age.secrets.tailscale-token = {
file = ../../../secrets/services/tailscale/token.age;
owner = "root";
group = "root";
mode = "600";
};
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" "run-agenix.d.mount" ];
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
${tailscale}/bin/tailscale up -authkey "$(cat "${config.age.secrets.tailscale-token.path}")"
'';
};
}