victorialogs: Remove module

hosts/vps-monitor/default.nix

@@ -55,11 +55,6 @@
           enable = true;
           domain = "metrics.${privateDomain}";
         };
-
-        victorialogs = {
-          enable = true;
-          domain = "logs.${privateDomain}";
-        };
       };
   };
 }

modules/nixos/services/alertmanager.nix

@@ -0,0 +1,89 @@
+{
+  config,
+  lib,
+  allHosts,
+  ...
+}:
+let
+  cfg = config.custom.services.alertmanager;
+in
+{
+  options.custom.services.alertmanager = {
+    enable = lib.mkEnableOption "";
+    domain = lib.mkOption {
+      type = lib.types.nonEmptyStr;
+      default = "";
+    };
+    port = lib.mkOption {
+      type = lib.types.port;
+      default = 9093;
+    };
+    clusterPort = lib.mkOption {
+      type = lib.types.port;
+      default = 9094;
+    };
+    ntfyBridgePort = lib.mkOption {
+      type = lib.types.port;
+      default = 11512;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services = {
+      prometheus.alertmanager = {
+        enable = true;
+
+        listenAddress = "localhost";
+        inherit (cfg) port;
+        webExternalUrl = "https://${cfg.domain}";
+
+        extraFlags = [
+          "--cluster.advertise-address=${config.custom.networking.overlay.address}:${toString cfg.clusterPort}"
+          "--cluster.listen-address=${config.custom.networking.overlay.address}:${toString cfg.clusterPort}"
+        ]
+        ++ (
+          allHosts
+          |> lib.attrValues
+          |> lib.filter (host: host.config.networking.hostName != config.networking.hostName)
+          |> lib.filter (host: host.config.custom.services.alertmanager.enable)
+          |> lib.map (
+            host: "--cluster.peer ${host.config.custom.networking.overlay.address}:${toString cfg.clusterPort}"
+          )
+        );
+
+        configuration = {
+          route = {
+            group_by = [
+              "alertname"
+              "instance"
+            ];
+            receiver = "ntfy";
+          };
+          receivers = lib.singleton {
+            name = "ntfy";
+            webhook_configs = lib.singleton { url = "http://localhost:${toString cfg.ntfyBridgePort}/hook"; };
+          };
+        };
+      };
+
+      prometheus.alertmanager-ntfy = {
+        enable = true;
+        settings = {
+          http.addr = "localhost:${toString cfg.ntfyBridgePort}";
+          ntfy = {
+            baseurl = "https://ntfy.sh";
+            notification.topic = "splitleaf";
+          };
+        };
+      };
+
+      nebula.networks.mesh.firewall.inbound = lib.singleton {
+        port = cfg.clusterPort;
+        proto = "any";
+        group = "server";
+      };
+    };
+
+    custom.services.caddy.virtualHosts.${cfg.domain}.port = cfg.port;
+  };
+}

modules/nixos/services/alloy.nix

@@ -17,32 +17,18 @@ in
       type = lib.types.nonEmptyStr;
       default = "https://metrics.${config.custom.networking.overlay.domain}/prometheus/api/v1/write";
     };
-    logsEndpoint = lib.mkOption {
+    collect.metrics = {
-      type = lib.types.nonEmptyStr;
-      default = "https://logs.${config.custom.networking.overlay.domain}/insert/loki/api/v1/push";
-    };
-    collect = {
-      metrics = {
       system = lib.mkEnableOption "" // {
         default = true;
       };
-        victorialogs = lib.mkEnableOption "" // {
-          default = config.services.victorialogs.enable;
-        };
       caddy = lib.mkEnableOption "" // {
         default = config.services.caddy.enable;
       };
     };
-      logs.openssh = lib.mkEnableOption "" // {
-        default = config.services.openssh.enable;
-      };
-    };
   };
 
   config = lib.mkIf cfg.enable {
     assertions =
-      let
-        metricsAssertions =
       cfg.collect.metrics
       |> lib.attrNames
       |> lib.filter (name: name != "system")
@@ -50,15 +36,6 @@ in
         assertion = cfg.collect.metrics.${name} -> config.services.${name}.enable;
         message = "Alloy cannot collect `${name}` metrics without the `${name}` service";
       });
-        logsAssertions =
-          cfg.collect.logs
-          |> lib.attrNames
-          |> lib.map (name: {
-            assertion = cfg.collect.logs.${name} -> config.services.${name}.enable;
-            message = "Alloy cannot collect '${name}' logs without the '${name}' service";
-          });
-      in
-      metricsAssertions ++ logsAssertions;
 
     services.alloy = {
       enable = true;
@@ -84,16 +61,6 @@ in
             }
           '';
         };
-        "alloy/logs-endpoint.alloy" = {
-          enable = cfg.collect.logs |> anyIsTrue;
-          text = ''
-            loki.write "default" {
-              endpoint {
-                url = "${cfg.logsEndpoint}"
-              }
-            }
-          '';
-        };
         "alloy/system-metrics.alloy" = {
           enable = cfg.collect.metrics.system;
           text = ''
@@ -108,20 +75,6 @@ in
             }
           '';
         };
-        "alloy/victorialogs-metrics.alloy" = {
-          enable = cfg.collect.metrics.victorialogs;
-          text = ''
-            prometheus.scrape "victorialogs" {
-              targets = [{
-                __address__ = "localhost:${toString config.custom.web-services.victorialogs.port}",
-                job         = "victorialogs",
-                instance    = constants.hostname,
-              }]
-              forward_to      = [prometheus.remote_write.default.receiver]
-              scrape_interval = "15s"
-            }
-          '';
-        };
         "alloy/caddy-metrics.alloy" = {
           enable = cfg.collect.metrics.caddy;
           text = ''
@@ -136,15 +89,6 @@ in
             }
           '';
         };
-        "alloy/sshd-logs.alloy" = {
-          enable = cfg.collect.logs.openssh;
-          text = ''
-            loki.source.journal "sshd" {
-              matches    = "_SYSTEMD_UNIT=sshd.service"
-              forward_to = [loki.write.default.receiver]
-            }
-          '';
-        };
       };
 
     custom.services.caddy.virtualHosts.${cfg.domain}.port = cfg.port;

modules/nixos/services/prometheus.nix

@@ -0,0 +1,100 @@
+{
+  config,
+  pkgs,
+  lib,
+  allHosts,
+  ...
+}:
+let
+  cfg = config.custom.services.prometheus;
+in
+{
+  options.custom.services.prometheus = {
+    enable = lib.mkEnableOption "";
+    domain = lib.mkOption {
+      type = lib.types.nonEmptyStr;
+      default = "";
+    };
+    port = lib.mkOption {
+      type = lib.types.port;
+      default = 9090;
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    services.prometheus = {
+      enable = true;
+      stateDir = "prometheus";
+
+      listenAddress = "localhost";
+      inherit (cfg) port;
+      webExternalUrl = "https://${cfg.domain}";
+
+      globalConfig = {
+        scrape_interval = "30s";
+        external_labels.monitor = "global";
+      };
+
+      alertmanagers = lib.singleton {
+        scheme = "https";
+        static_configs = lib.singleton {
+          targets =
+            allHosts
+            |> lib.attrValues
+            |> lib.map (host: host.config.custom.services.alertmanager)
+            |> lib.filter (alertmanager: alertmanager.enable)
+            |> lib.map (alertmanager: alertmanager.domain);
+        };
+      };
+
+      scrapeConfigs = [
+        {
+          job_name = "prometheus";
+          static_configs = lib.singleton {
+            targets =
+              allHosts
+              |> lib.attrValues
+              |> lib.map (host: host.config.custom.services.prometheus)
+              |> lib.filter (prometheus: prometheus.enable)
+              |> lib.map (prometheus: prometheus.domain);
+          };
+        }
+        {
+          job_name = "alertmanager";
+          static_configs = lib.singleton {
+            targets =
+              allHosts
+              |> lib.attrValues
+              |> lib.map (host: host.config.custom.services.alertmanager)
+              |> lib.filter (alertmanager: alertmanager.enable)
+              |> lib.map (alertmanager: alertmanager.domain);
+          };
+        }
+      ];
+
+      ruleFiles =
+        {
+          groups = lib.singleton {
+            name = "InstanceDown";
+            rules = lib.singleton {
+              alert = "InstanceDown";
+              expr = "up == 0";
+              for = "2m";
+              labels.severity = "critical";
+              annotations.summary = "Instance {{ $labels.instance }} down";
+            };
+          };
+        }
+        |> lib.strings.toJSON
+        |> pkgs.writeText "prometheus-instance-down-rule"
+        |> toString
+        |> lib.singleton;
+    };
+
+    custom = {
+      services.caddy.virtualHosts.${cfg.domain}.port = cfg.port;
+
+      persistence.directories = [ "/var/lib/${config.services.prometheus.stateDir}" ];
+    };
+  };
+}

modules/nixos/web-services/grafana.nix

@@ -37,15 +37,6 @@ in
           default = "https://${config.custom.web-services.victoriametrics.domain}";
         };
       };
-      victorialogs = {
-        enable = lib.mkEnableOption "" // {
-          default = config.custom.web-services.victorialogs.enable;
-        };
-        url = lib.mkOption {
-          type = lib.types.nonEmptyStr;
-          default = "https://${config.custom.web-services.victorialogs.domain}";
-        };
-      };
     };
     dashboards = {
       nodeExporter.enable = lib.mkEnableOption "" // {
@@ -54,9 +45,6 @@ in
       victoriametrics.enable = lib.mkEnableOption "" // {
         default = config.custom.web-services.victoriametrics.enable;
       };
-      victorialogs.enable = lib.mkEnableOption "" // {
-        default = config.custom.web-services.victorialogs.enable;
-      };
     };
   };
 
@@ -110,12 +98,6 @@ in
               inherit (cfg.datasources.victoriametrics) url;
               isDefault = false;
             })
-            (lib.mkIf cfg.datasources.victorialogs.enable {
-              name = "VictoriaLogs";
-              type = "victoriametrics-logs-datasource";
-              inherit (cfg.datasources.victorialogs) url;
-              isDefault = false;
-            })
           ];
         };
       };
@@ -126,7 +108,6 @@ in
         in
         [
           (lib.optional cfg.datasources.victoriametrics.enable plugins.victoriametrics-metrics-datasource)
-          (lib.optional cfg.datasources.victorialogs.enable plugins.victoriametrics-logs-datasource)
         ]
         |> lib.concatLists;
     };
@@ -157,22 +138,6 @@ in
             ''
           );
       };
-      # https://grafana.com/grafana/dashboards/22084-victorialogs-single-node/
-      "grafana-dashboards/victorialogs-single-node-patched.json" = {
-        enable = cfg.dashboards.victorialogs.enable;
-        source =
-          pkgs.fetchurl {
-            name = "victorialogs-single-node.json";
-            url = "https://grafana.com/api/dashboards/22084/revisions/8/download";
-            hash = "sha256-/a3Rbp/6oyiLBnQtGupyFZW+fIHQfkyKRRTyfofxVTM=";
-          }
-          |> (
-            src:
-            pkgs.runCommand "victorialogs-single-node-patched.json" { buildInputs = [ pkgs.gnused ]; } ''
-              sed 's/victoria-logs-//g' ${src} > $out
-            ''
-          );
-      };
     };
 
     custom.services.caddy.virtualHosts.${cfg.domain}.port = cfg.port;

modules/nixos/web-services/victorialogs.nix

@@ -1,44 +0,0 @@
-{ config, lib, ... }:
-let
-  cfg = config.custom.web-services.victorialogs;
-in
-{
-  options.custom.web-services.victorialogs = {
-    enable = lib.mkEnableOption "";
-    domain = lib.mkOption {
-      type = lib.types.nonEmptyStr;
-      default = "";
-    };
-    port = lib.mkOption {
-      type = lib.types.port;
-      default = 9428;
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    users = {
-      users.victorialogs = {
-        isSystemUser = true;
-        group = config.users.groups.victoriametrics.name;
-      };
-      groups.victorialogs = { };
-    };
-
-    systemd.services.victorialogs.serviceConfig = {
-      DynamicUser = lib.mkForce false;
-      User = config.users.users.victorialogs.name;
-      Group = config.users.groups.victorialogs.name;
-    };
-
-    services.victorialogs = {
-      enable = true;
-      listenAddress = "localhost:${toString cfg.port}";
-    };
-
-    custom = {
-      services.caddy.virtualHosts.${cfg.domain}.port = cfg.port;
-
-      persistence.directories = [ "/var/lib/${config.services.victorialogs.stateDir}" ];
-    };
-  };
-}

profiles/server.nix

@@ -12,6 +12,14 @@
         enable = true;
         domain = "alloy.${config.custom.networking.overlay.fqdn}";
       };
+      prometheus = {
+        enable = true;
+        domain = "prometheus.${config.custom.networking.overlay.fqdn}";
+      };
+      alertmanager = {
+        enable = true;
+        domain = "alertmanager.${config.custom.networking.overlay.fqdn}";
+      };
     };
   };
 }