feat: migrate from prometheus to victoriametrics (#171)

* feat: migrate from prometheus to victoriametrics * fix: duplicated declaration * fix: victoriametrics - isSystemUser * fix: import promTypes * fix: vmalert * fix(victoriametrics): cli args
2026-07-17 01:51:10 +02:00 · 2024-10-23 23:22:08 +08:00
parent 0fb0601a24
commit 34072df760
12 changed files with 1716 additions and 206 deletions
@@ -0,0 +1,132 @@
+{
+  lib,
+  myvars,
+  ...
+}: {
+  # Workaround for victoriametrics to store data in another place
+  # https://www.freedesktop.org/software/systemd/man/latest/tmpfiles.d.html#Type
+  systemd.tmpfiles.rules = [
+    "D /data/apps/victoriametrics 0751 victoriametrics victoriametrics - -"
+    "L+ /var/lib/victoriametrics - - - - /data/apps/victoriametrics"
+  ];
+
+  # https://victoriametrics.io/docs/victoriametrics/latest/configuration/configuration/
+  services.my-victoriametrics = {
+    enable = true;
+    listenAddress = "127.0.0.1";
+    port = 9090;
+    retentionTime = "30d";
+
+    extraFlags = [
+      # Allowed percent of system memory VictoriaMetrics caches may occupy.
+      "-memory.allowedPercent=50"
+    ];
+    # Directory below /var/lib to store victoriametrics metrics data.
+    stateDir = "victoriametrics";
+
+    # specifies a set of targets and parameters describing how to scrape metrics from them.
+    # https://prometheus.io/docs/prometheus/latest/configuration/configuration/#scrape_config
+    scrapeConfigs =
+      [
+        # --- Homelab Applications --- #
+
+        {
+          job_name = "dnsmasq-exporter";
+          scrape_interval = "30s";
+          metrics_path = "/metrics";
+          static_configs = [
+            {
+              targets = ["${myvars.networking.hostsAddr.suzi.ipv4}:9153"];
+              labels.type = "app";
+              labels.app = "dnsmasq";
+              labels.host = "suzi";
+            }
+          ];
+        }
+
+        {
+          job_name = "v2ray-exporter";
+          scrape_interval = "30s";
+          metrics_path = "/metrics";
+          static_configs = [
+            {
+              targets = ["${myvars.networking.hostsAddr.aquamarine.ipv4}:9153"];
+              labels.type = "app";
+              labels.app = "v2ray";
+              labels.host = "aquamarine";
+            }
+          ];
+        }
+        {
+          job_name = "postgres-exporter";
+          scrape_interval = "30s";
+          metrics_path = "/metrics";
+          static_configs = [
+            {
+              targets = ["${myvars.networking.hostsAddr.aquamarine.ipv4}:9187"];
+              labels.type = "app";
+              labels.app = "postgresql";
+              labels.host = "aquamarine";
+            }
+          ];
+        }
+        {
+          job_name = "sftpgo-embedded-exporter";
+          scrape_interval = "30s";
+          metrics_path = "/metrics";
+          static_configs = [
+            {
+              targets = ["${myvars.networking.hostsAddr.aquamarine.ipv4}:10000"];
+              labels.type = "app";
+              labels.app = "sftpgo";
+              labels.host = "aquamarine";
+            }
+          ];
+        }
+      ]
+      # --- Hosts --- #
+      ++ (
+        lib.attrsets.foldlAttrs
+        (acc: hostname: addr:
+          acc
+          ++ [
+            {
+              job_name = "node-exporter-${hostname}";
+              scrape_interval = "30s";
+              metrics_path = "/metrics";
+              static_configs = [
+                {
+                  # All my NixOS hosts.
+                  targets = ["${addr.ipv4}:9100"];
+                  labels.type = "node";
+                  labels.host = hostname;
+                }
+              ];
+            }
+          ])
+        []
+        myvars.networking.hostsAddr
+      );
+  };
+
+  services.vmalert = {
+    enable = true;
+    settings = {
+      "datasource.url" = "http://localhost:9090";
+      "notifier.url" = ["http://localhost:9093"]; # alertmanager's api
+
+      # Whether to disable long-lived connections to the datasource.
+      "datasource.disableKeepAlive" = true;
+      # Whether to avoid stripping sensitive information such as auth headers or passwords
+      # from URLs in log messages or UI and exported metrics.
+      "datasource.showURL" = false;
+      rule = [
+        ./alert_rules/node-exporter.yml
+        ./alert_rules/kubestate-exporter.yml
+        ./alert_rules/etcd_embedded-exporter.yml
+        ./alert_rules/istio_embedded-exporter.yml
+        ./alert_rules/coredns_embedded-exporter.yml
+      ];
+    };
+  };
+}