ildkule: Move metrics->monitoring. Add uptime-kuma. Adjust prometheus exporters.

hosts/ildkule/services/monitoring/prometheus/postgres.nix

@@ -0,0 +1,51 @@
+{ pkgs, lib, config, values, ... }: let
+  cfg = config.services.prometheus;
+in {
+  sops.secrets = {
+    "keys/postgres/postgres_exporter_env" = {};
+    "keys/postgres/postgres_exporter_knakelibrak_env" = {};
+  };
+
+  services.prometheus = {
+    scrapeConfigs = [
+      {
+        job_name = "postgres";
+        scrape_interval = "15s";
+        static_configs = [{
+          targets = [ "localhost:${toString cfg.exporters.postgres.port}" ];
+          labels = {
+            server = "bicep";
+          };
+        }];
+      }
+      {
+        job_name = "postgres-knakelibrak";
+        scrape_interval = "15s";
+        static_configs = [{
+          targets = [ "localhost:${toString (cfg.exporters.postgres.port + 1)}" ];
+          labels = {
+            server = "knakelibrak";
+          };
+        }];
+      }
+    ];
+
+    exporters.postgres = {
+      enable = true;
+      extraFlags = [ "--auto-discover-databases" ];
+      environmentFile = config.sops.secrets."keys/postgres/postgres_exporter_env".path;
+    };
+  };
+
+  systemd.services.prometheus-postgres-exporter-knakelibrak.serviceConfig = let
+    localCfg = config.services.prometheus.exporters.postgres; 
+  in lib.recursiveUpdate config.systemd.services.prometheus-postgres-exporter.serviceConfig {
+      EnvironmentFile = config.sops.secrets."keys/postgres/postgres_exporter_knakelibrak_env".path;
+      ExecStart = ''
+        ${pkgs.prometheus-postgres-exporter}/bin/postgres_exporter \
+          --web.listen-address ${localCfg.listenAddress}:${toString (localCfg.port + 1)} \
+          --web.telemetry-path ${localCfg.telemetryPath} \
+          ${lib.concatStringsSep " \\\n  " localCfg.extraFlags}
+      '';
+    };
+}