From 5c3b9fd7910e5eb1e6dcca519f440a0bb4b2aa09 Mon Sep 17 00:00:00 2001
From: Hendrik Sokolowski <hensoko@gssws.de>
Date: Sun, 1 Oct 2023 22:45:21 +0200
Subject: [PATCH] Extend monitoring-server

---
 modules/monitoring-server/default.nix | 100 ++++++++++++++++++++------
 1 file changed, 80 insertions(+), 20 deletions(-)

diff --git a/modules/monitoring-server/default.nix b/modules/monitoring-server/default.nix
index 22070d6e..eb225181 100644
--- a/modules/monitoring-server/default.nix
+++ b/modules/monitoring-server/default.nix
@@ -10,60 +10,120 @@ with lib; let
 in {
   options.pub-solar.monitoring-server = {
     enable = mkEnableOption "Install a monitoring server node";
+    listenAddress = mkOption {
+      type = types.str;
+      default = "127.0.0.1";
+    };
+    grafana = {
+      enable = mkEnableOption "Run grafana";
+      port = mkOption {
+        type = types.int;
+        default = 2342;
+      };
+    };
+    node_exporter = {
+      enable = mkEnableOption "prometheus node-exporter support";
+      hosts = mkOption {
+        type = types.listOf types.str;
+      };
+    };
+    snmp = {
+      enable = mkEnableOption "prometheus snmp export support";
+      hosts = mkOption {
+        #type = types.Or (types.AttrSet types.listOf types.str);
+      };
+      settings = mkOption {
+        type = types.NullOr types.AttrSet;
+        default = null;
+      };
+    };
+    smokeping = {
+      enable = mkEnableOption "prometheus smokeping support";
+      hosts = mkOption {
+        type = types.listOf types.str;
+      };
+    };
   };
 
   config = mkIf cfg.enable {
-    networking.firewall.allowedTCPPorts = [2342 9001];
+    networking.firewall.allowedTCPPorts = [cfg.grafana.port 9001 9374];
 
     pub-solar.monitoring-client = {
       enable = true;
-      listenAddress = "10.0.1.6";
+      listenAddress = cfg.listenAddress;
     };
 
-    services.grafana = {
+    services.grafana = mkIf cfg.grafana.enable {
       enable = true;
-      port = 2342;
-      addr = "10.0.1.6";
+      settings = {
+        server = {
+          http_addr = cfg.listenAddress;
+          http_port = cfg.grafana.port;
+        };
+      };
     };
 
     services.prometheus = {
       enable = true;
-      listenAddress = "10.0.1.6";
+      listenAddress = cfg.listenAddress;
       port = 9001;
       scrapeConfigs = [
         {
-          job_name = "chonk";
+          job_name = "node_exporters";
           static_configs = [
             {
-              targets = ["10.0.1.6:9002"];
+              targets =
+                ["${cfg.listenAddress}:9002"]
+                ++ cfg.node_exporter.hosts;
             }
           ];
         }
         {
-          job_name = "giggles";
+          job_name = "snmp_wohnung_aachen_mikrotik";
+          scrape_interval = "15s";
           static_configs = [
             {
-              targets = ["10.0.1.11:9002"];
+              targets = cfg.snmp.hosts;
+            }
+          ];
+          metrics_path = "/snmp";
+          params = {
+            auth = ["public_v2"];
+            module = ["if_mib"];
+          };
+          relabel_configs = [
+            {
+              source_labels = ["__address__"];
+              target_label = "__param_target";
+            }
+            {
+              source_labels = ["__param_target"];
+              target_label = "instance";
+            }
+            {
+              target_label = "__address__";
+              replacement = "10.0.1.254:9116";
             }
           ];
         }
         {
-          job_name = "cox";
+          job_name = "smokeping";
+          scrape_interval = "15s";
           static_configs = [
             {
-              targets = ["10.0.1.12:9002"];
-            }
-          ];
-        }
-        {
-          job_name = "companion";
-          static_configs = [
-            {
-              targets = ["10.0.1.13:9002"];
+              targets = [
+                "${cfg.listenAddress}:9374"
+              ];
             }
           ];
         }
       ];
+
+      exporters.smokeping = mkIf cfg.smokeping.enable {
+        enable = true;
+        listenAddress = cfg.listenAddress;
+        hosts = cfg.smokeping.hosts;
+      };
     };
   };
 }