xmrig

services/xmrig.nix

@@ -0,0 +1,53 @@
+{
+  config,
+  lib,
+  pkgs,
+  hostname,
+  ...
+}:
+let
+  walletAddress = lib.strings.trim (builtins.readFile ../secrets/xmrig-wallet);
+  threadCount = 2;
+in
+{
+  services.xmrig = {
+    enable = true;
+    package = pkgs.xmrig;
+
+    settings = {
+      autosave = true;
+
+      cpu = {
+        enabled = true;
+        huge-pages = true;
+        hw-aes = true;
+        rx = lib.range 0 (threadCount - 1);
+      };
+
+      opencl = false;
+      cuda = false;
+
+      pools = [
+        {
+          url = "gulf.moneroocean.stream:20128";
+          user = walletAddress;
+          pass = hostname + "~rx/0";
+          keepalive = true;
+          tls = true;
+        }
+      ];
+    };
+  };
+
+  systemd.services.xmrig.serviceConfig = {
+    Nice = 19;
+    CPUSchedulingPolicy = "idle";
+    IOSchedulingClass = "idle";
+  };
+
+  # Stop mining on UPS battery to conserve power
+  services.apcupsd.hooks = lib.mkIf config.services.apcupsd.enable {
+    onbattery = "systemctl stop xmrig";
+    offbattery = "systemctl start xmrig";
+  };
+}