diff --git a/machines/calcite/configuration.nix b/machines/calcite/configuration.nix
index 03f1801..4b35351 100644
--- a/machines/calcite/configuration.nix
+++ b/machines/calcite/configuration.nix
@@ -265,11 +265,6 @@
   custom.forgejo-actions-runner.enable = true;
   custom.forgejo-actions-runner.tokenFile = config.sops.secrets.gitea_env.path;
 
-  custom.prometheus = {
-    enable = true;
-    exporters.blackbox.enable = true;
-  };
-
   # MTP support
   services.gvfs.enable = true;
 
diff --git a/modules/nixos/prometheus/blackbox.nix b/modules/nixos/prometheus/blackbox.nix
deleted file mode 100644
index 7886b06..0000000
--- a/modules/nixos/prometheus/blackbox.nix
+++ /dev/null
@@ -1,83 +0,0 @@
-{ config, lib, pkgs, ... }:
-let
-  cfg = config.custom.prometheus;
-in
-{
-  config = lib.mkIf (cfg.enable && cfg.exporters.blackbox.enable) {
-    services.prometheus.exporters.blackbox = {
-      enable = true;
-      listenAddress = "127.0.0.1";
-      configFile = pkgs.writeText "blackbox.config.yaml" (
-        lib.generators.toYAML {} {
-          modules = {
-            tcp4_connect = {
-              prober = "tcp";
-              tcp = {
-                ip_protocol_fallback = false;
-                preferred_ip_protocol = "ip4";
-                tls = false;
-              };
-              timeout = "15s";
-            };
-          };
-        }
-      );
-    };
-
-    services.prometheus.scrapeConfigs = [
-       {
-        job_name = "blackbox";
-        scrape_interval = "1m";
-        metrics_path = "/probe";
-        params = {
-          module = [ "tcp4_connect" ];
-        };
-        static_configs = [
-          {
-            targets = [
-              "tok-00.namely.icu:8080"
-              "la-00.video.namely.icu:8080"
-              "auth.xinyang.life:443"
-              "home.xinyang.life:8000"
-            ];
-          }
-        ];
-        relabel_configs = [
-          {
-            source_labels = [ "__address__" ];
-            target_label = "__param_target";
-          }
-          {
-            source_labels = [ "__param_target" ];
-            target_label = "instance";
-          }
-          {
-            target_label = "__address__";
-            replacement = "127.0.0.1:${toString config.services.prometheus.exporters.blackbox.port}";
-          }
-        ];
-      }
-      {
-        job_name = "blackbox_exporter";
-        static_configs = [
-          { targets = [ "127.0.0.1:${toString config.services.prometheus.exporters.blackbox.port}" ]; }
-        ];
-      }
-    ];
-
-    custom.prometheus.ruleModules = [
-      {
-        name = "probe_alerts";
-        rules = [
-          {
-            alert = "HighProbeLatency";
-            expr = "probe_duration_seconds > 0.5";
-            for = "2m";
-            labels = { severity = "warning"; };
-            annotations = { summary = "High request latency on {{ $labels.instance }}"; description = "95th percentile of request latency is above 0.5 seconds for the last 2 minutes."; };
-          }
-        ];
-      }
-    ];
-  };
-}
diff --git a/modules/nixos/prometheus/caddy.nix b/modules/nixos/prometheus/caddy.nix
index d35049b..a62b639 100644
--- a/modules/nixos/prometheus/caddy.nix
+++ b/modules/nixos/prometheus/caddy.nix
@@ -3,7 +3,7 @@ let
   cfg = config.custom.prometheus;
 in
 {
-  config = lib.mkIf (cfg.enable && cfg.exporters.caddy.enable) {
+  config = lib.mkIf cfg.enable {
     services.caddy.globalConfig = lib.mkIf cfg.exporters.caddy.enable ''
       servers {
         metrics
@@ -11,16 +11,16 @@ in
     '';
 
     services.prometheus.scrapeConfigs = [
-      {
+      (lib.mkIf cfg.exporters.caddy.enable {
         job_name = "caddy";
         static_configs = [
           { targets = [ "127.0.0.1:2019" ]; }
         ];
-      }
+      })
     ];
 
     custom.prometheus.ruleModules = [
-      {
+      (lib.mkIf cfg.exporters.caddy.enable {
         name = "caddy_alerts";
         rules = [
           {
@@ -38,7 +38,7 @@ in
             annotations = { summary = "High request latency on {{ $labels.instance }}"; description = "95th percentile of request latency is above 0.5 seconds for the last 2 minutes."; };
           }
         ];
-      }
+      })
     ];
   };
 
diff --git a/modules/nixos/prometheus/default.nix b/modules/nixos/prometheus/default.nix
index c0f0a70..803b9aa 100644
--- a/modules/nixos/prometheus/default.nix
+++ b/modules/nixos/prometheus/default.nix
@@ -4,6 +4,7 @@ with lib;
 
 let
   cfg = config.custom.prometheus;
+  exporterCfg = config.custom.prometheus.exporters;
   mkExporterOption = enableOption: (mkOption {
     type = types.bool;
     default = enableOption;
@@ -25,7 +26,6 @@ let
 in
 {
   imports = [
-    ./blackbox.nix
     ./caddy.nix
     ./gotosocial.nix
     ./ntfy-sh.nix
@@ -43,7 +43,6 @@ in
         };
 
         restic.enable = mkExporterOption config.services.restic.server.enable;
-        blackbox.enable = mkExporterOption false;
         caddy.enable = mkExporterOption config.services.caddy.enable;
         gotosocial.enable = mkExporterOption config.services.gotosocial.enable;
         ntfy-sh.enable = mkExporterOption config.services.gotosocial.enable;
@@ -188,13 +187,6 @@ in
               labels = { severity = "critical"; };
               annotations = { summary = "Outbound network traffic exceed 300GB for last 30 day"; };
             }
-            {
-              alert = "JobDown";
-              expr = "up == 0";
-              for = "1m";
-              labels = { severity = "critical"; };
-              annotations = { summary = "Job {{ $labels.job }} down for 1m."; };
-            }
           ];
         }
       ];
diff --git a/modules/nixos/prometheus/gotosocial.nix b/modules/nixos/prometheus/gotosocial.nix
index a643d19..4870e88 100644
--- a/modules/nixos/prometheus/gotosocial.nix
+++ b/modules/nixos/prometheus/gotosocial.nix
@@ -3,8 +3,8 @@ let
   cfg = config.custom.prometheus;
 in
 {
-  config = lib.mkIf (cfg.enable && cfg.exporters.gotosocial.enable) {
-    services.gotosocial.settings = {
+  config = lib.mkIf cfg.exporters.gotosocial.enable {
+    services.gotosocial.settings = lib.mkIf cfg.exporters.gotosocial.enable {
       metrics-enabled = true;
     };
     services.prometheus.scrapeConfigs = [
diff --git a/modules/nixos/prometheus/ntfy-sh.nix b/modules/nixos/prometheus/ntfy-sh.nix
index 513f130..35d62ff 100644
--- a/modules/nixos/prometheus/ntfy-sh.nix
+++ b/modules/nixos/prometheus/ntfy-sh.nix
@@ -3,15 +3,15 @@ let
   cfg = config.custom.prometheus;
 in
 {
-  config = lib.mkIf (cfg.enable && cfg.exporters.ntfy-sh.enable) {
+  config = lib.mkIf cfg.enable {
     services.ntfy-sh.settings.enable-metrics = true;
     services.prometheus.scrapeConfigs = [
-      {
+      (lib.mkIf cfg.exporters.ntfy-sh.enable {
         job_name = "ntfy-sh";
         static_configs = [
           { targets = [ "ntfy.xinyang.life" ]; }
         ];
-      }
+      })
     ];
   };
 }
diff --git a/modules/nixos/prometheus/restic.nix b/modules/nixos/prometheus/restic.nix
index 750b61a..80f0316 100644
--- a/modules/nixos/prometheus/restic.nix
+++ b/modules/nixos/prometheus/restic.nix
@@ -3,7 +3,7 @@ let
   cfg = config.custom.prometheus;
 in
 {
-  config = lib.mkIf (cfg.enable && cfg.exporters.restic.enable) {
+  config = lib.mkIf cfg.enable {
     services.restic.server.prometheus = true;
 
     services.prometheus.scrapeConfigs = [
@@ -16,7 +16,7 @@ in
     ];
 
     custom.prometheus.ruleModules = [
-      {
+      (lib.mkIf cfg.exporters.restic.enable {
         name = "restic_alerts";
         rules = [
           {
@@ -34,7 +34,7 @@ in
             annotations = { summary = "Restic {{ $labels.client_hostname }} / {{ $labels.client_username }} backup is outdated"; description = "Restic backup is outdated\\n  VALUE = {{ $value }}\\n  LABELS = {{ $labels }}"; };
           }
         ];
-      }
+      })
     ];
   };