diff --git a/README.md b/README.md
index cd0ebc90..4323f875 100644
--- a/README.md
+++ b/README.md
@@ -209,3 +209,19 @@ Completed ToDo List [here](docs/complete.md)
   * https://github.com/Pipshag/dotfiles_nord 
   * https://github.com/hajosattila/dotfiles/
   * https://gist.github.com/toger5/3a509d9a9d7ebba1e02205b00449ccff 
+
+
+Example of passwordless SSH for deploy-rs:
+```
+nixosConfigurations.target = {
+  # enable passwordless elevation
+  security.pam.enableSSHAgentAuth = true;
+};
+deploy.nodes.target = {
+  # ssh as normal user but elevate to root after
+  sshUser = "me";
+  user = "root";
+  sshOpts = [ "-A" ];
+};
+
+```
\ No newline at end of file
diff --git a/nixos/common/services/telegraf.nix b/nixos/common/services/telegraf.nix
index 89f7a3ea..2621931e 100644
--- a/nixos/common/services/telegraf.nix
+++ b/nixos/common/services/telegraf.nix
@@ -17,11 +17,12 @@
 
   # Allow telegraf to talk to other executables it requires:
   systemd.services.telegraf = {
-    path = with pkgs; [ 
-      lm_sensors               # sensors
-      # linuxPackages.nvidia_x11 # nvidia-smi
-      smartmontools            # smartctl
-      sudo                     # sudo
+    path = [ 
+      pkgs.lm_sensors               # sensors
+      pkgs.linuxPackages.nvidia_x11 # nvidia-smi
+      pkgs.smartmontools            # smartctl
+      pkgs.sudo                     # sudo
+      nixos-version
      ];
   };
 
@@ -63,6 +64,9 @@
         };
         temp = {};
         wireless = {};
+        files = {
+          files = [ "/etc/os-release" ];
+        };
         exec = {
           commands = [ "nixos-version" ];
           name_suffix = "_nixos-version";