hosts/monitoring-3: add prometheus job for high frequency pings

hosts/monitoring-3/grafana.nix

@@ -2,11 +2,17 @@
 {
   services.grafana = {
     enable  = true;
-    domain  = "grafana.monitoring.clerie.de";
-    rootUrl = "https://grafana.monitoring.clerie.de";
-    port    = 3001;
-    addr = "::1";
-    auth.anonymous.enable = true;
+    settings = {
+      server = {
+        domain = "grafana.monitoring.clerie.de";
+        root_url = "https://grafana.monitoring.clerie.de";
+        http_port = 3001;
+        http_addr = "::1";
+      };
+      "auth.anonymous" = {
+        enabled = true;
+      };
+    };
 
     provision = {
       enable = true;

hosts/monitoring-3/prometheus.nix

@@ -294,6 +294,66 @@ in {
           relabelAddressToInstance
         ];
       }
+      {
+        job_name = "blackbox_local_icmp6_1s";
+        scrape_interval = "1s";
+        metrics_path = "/probe";
+        params = {
+          module = [ "icmp6" ];
+        };
+        static_configs = [
+          {
+            targets = [
+              "carbon.net.clerie.de"
+            ];
+          }
+        ];
+        relabel_configs = [
+          {
+            source_labels = [ "__address__" ];
+            target_label = "__param_target";
+          }
+          {
+            source_labels = [ "__address__" ];
+            target_label = "target";
+          }
+          {
+            target_label = "__address__";
+            replacement = "monitoring-3.mon.clerie.de:9115";
+          }
+          relabelAddressToInstance
+        ];
+      }
+      {
+        job_name = "blackbox_local_icmp4_1s";
+        scrape_interval = "1s";
+        metrics_path = "/probe";
+        params = {
+          module = [ "icmp4" ];
+        };
+        static_configs = [
+          {
+            targets = [
+              "carbon.net.clerie.de"
+            ];
+          }
+        ];
+        relabel_configs = [
+          {
+            source_labels = [ "__address__" ];
+            target_label = "__param_target";
+          }
+          {
+            source_labels = [ "__address__" ];
+            target_label = "target";
+          }
+          {
+            target_label = "__address__";
+            replacement = "monitoring-3.mon.clerie.de:9115";
+          }
+          relabelAddressToInstance
+        ];
+      }
       {
         job_name = "zimmer-temp";
         scrape_interval = "20s";