converted to variables

telegraf.nix

@@ -1,8 +1,18 @@
 { ... }:
+let
+  influxURL = "http://panoptes.john-stream.com:8086";
+  organization = "homelab";
+  bucket = "docker";
+  envFile = ./telegraf.env;
+in
 {
+  systemd.services.telegraf.serviceConfig = {
+    SupplementaryGroups = [ "docker" ];
+  };
+
   services.telegraf = {
     enable = true;
-    environmentFiles = [ ./telegraf.env ];
+    environmentFiles = [ "${envFile}" ];
     extraConfig = {
       agent = {
         interval = "10s";
@@ -30,10 +40,10 @@
       };
       outputs = {
         influxdb_v2 = {
-          urls = ["http://panoptes.john-stream.com:8086"];
+          urls = ["${influxURL}"];
           token = "$INFLUX_WRITE_TOKEN";
-          organization = "homelab";
-          bucket = "docker";
+          organization = "${organization}";
+          bucket = "${bucket}";
         };
       };
     };