llama-cpp: xmrig + grafana hooks

services/llama-cpp-xmrig-pause.nix

@@ -1,13 +1,11 @@
 {
   pkgs,
-  service_configs,
   ...
 }:
 {
   systemd.services.llama-cpp-xmrig-pause = {
     description = "Pause xmrig while llama-cpp is processing requests";
     after = [
-      "network.target"
       "llama-cpp.service"
       "xmrig.service"
     ];
@@ -16,20 +14,20 @@
       ExecStart = "${pkgs.python3}/bin/python3 ${./llama-cpp-xmrig-pause.py}";
       Restart = "always";
       RestartSec = "10s";
+      # Needs /proc access (default) and AF_UNIX for systemctl
       NoNewPrivileges = true;
       ProtectHome = true;
       ProtectSystem = "strict";
       PrivateTmp = true;
       RestrictAddressFamilies = [
-        "AF_INET"
-        "AF_INET6"
+        "AF_UNIX" # systemctl talks to systemd over D-Bus unix socket
       ];
       MemoryDenyWriteExecute = true;
     };
     environment = {
-      LLAMA_CPP_URL = "http://127.0.0.1:${toString service_configs.ports.private.llama_cpp.port}";
       POLL_INTERVAL = "3";
       GRACE_PERIOD = "10";
+      CPU_THRESHOLD = "50";
     };
   };
 }