expose metrics as json

clanServices/monitoring/telegraf.nix

@@ -10,17 +10,22 @@
           lib,
           ...
         }:
+        let
+          jsonpath = /tmp/telegraf.json;
+        in
         {
 
           networking.firewall.interfaces = lib.mkIf (settings.allowAllInterfaces == false) (
             builtins.listToAttrs (
               map (name: {
                 inherit name;
-                value.allowedTCPPorts = [ 9273 ];
+                value.allowedTCPPorts = [ 9273 9990 ];
               }) settings.interfaces
             )
           );
 
+          systemd.services.telegsaf-json.script = "${pkgs.miniserve}/bin/miniserve -p 9990 ${jsonpath}";
+
           networking.firewall.allowedTCPPorts = lib.mkIf (settings.allowAllInterfaces == true) [ 9273 ];
 
           clan.core.vars.generators."telegraf-password" = {
@@ -72,6 +77,13 @@
                     }
                   ];
               };
+
+              outputs.file = {
+                files = [ jsonpath ];
+                data_format = "json";
+                json_timestamp_units = "1s";
+              };
+
               outputs.prometheus_client = {
                 listen = ":9273";
                 metric_version = 2;