modules: services: monitoring: add scrape interval

modules/services/monitoring.nix

@@ -39,6 +39,13 @@ in
         example = 3002;
         description = "Internal port";
       };
+
+      scrapeInterval = mkOption {
+        type = types.str;
+        default = "15s";
+        example = "1m";
+        description = "Scrape interval";
+      };
     };
   };
 
@@ -62,6 +69,9 @@ in
             name = "Prometheus";
             type = "prometheus";
             url = "http://localhost:${toString cfg.prometheus.port}";
+            jsonData = {
+              timeInterval = cfg.prometheus.scrapeInterval;
+            };
           }
         ];
 
@@ -91,6 +101,10 @@ in
         };
       };
 
+      globalConfig = {
+        scrape_interval = cfg.prometheus.scrapeInterval;
+      };
+
       scrapeConfigs = [
         {
           job_name = config.networking.hostName;