diff options
| author | Martin Fischer <martin@push-f.com> | 2025-03-09 15:43:41 +0100 |
|---|---|---|
| committer | Martin Fischer <martin@push-f.com> | 2025-03-12 06:55:39 +0100 |
| commit | 9695f7df824a4497b997d6f618b6b85496546b1c (patch) | |
| tree | 7dffcc968e21a23b7674b558bd9c8af6b1b7c737 | |
| parent | ae1f06dcf37992dd7deb6b9e77adb96f4a170827 (diff) | |
feat(tente): add Grafana, Loki, Alloy and Prometheus
| -rw-r--r-- | nixos/hosts/tente/default.nix | 5 | ||||
| -rw-r--r-- | nixos/hosts/tente/monitoring.nix | 143 |
2 files changed, 148 insertions, 0 deletions
diff --git a/nixos/hosts/tente/default.nix b/nixos/hosts/tente/default.nix index b54c378..07b70a4 100644 --- a/nixos/hosts/tente/default.nix +++ b/nixos/hosts/tente/default.nix @@ -21,6 +21,7 @@ in ./git.nix ./headscale.nix ./matrix.nix + ./monitoring.nix "${sources.my-osm-proposals}/service.nix" ]; @@ -45,6 +46,10 @@ in }; }; + monitoring.grafanaUiPort = 3000; + monitoring.alloyUiPort = 3001; + monitoring.lokiPort = 3030; + monitoring.prometheusExporterPort = 9002; headscale.port = 8080; matrix.port = 8008; diff --git a/nixos/hosts/tente/monitoring.nix b/nixos/hosts/tente/monitoring.nix new file mode 100644 index 0000000..bbf4439 --- /dev/null +++ b/nixos/hosts/tente/monitoring.nix @@ -0,0 +1,143 @@ +{ config, lib, pkgs, ... }: + +let + cfg = config.monitoring; +in +{ + options.monitoring = { + grafanaUiPort = lib.mkOption { + type = lib.types.int; + }; + lokiPort = lib.mkOption { + type = lib.types.int; + }; + alloyUiPort = lib.mkOption { + type = lib.types.int; + }; + prometheusExporterPort = lib.mkOption { + type = lib.types.int; + }; + }; + + config = { + services.grafana = { + enable = true; + settings = { + server = { + http_addr = "0.0.0.0"; + http_port = cfg.grafanaUiPort; + }; + }; + + provision = { + enable = true; + datasources.settings.datasources = [ + { + name = "Prometheus"; + type = "prometheus"; + url = "http://${config.services.prometheus.listenAddress}:${toString config.services.prometheus.port}"; + } + { + name = "Loki"; + type = "loki"; + access = "proxy"; + url = "http://127.0.0.1:${toString cfg.lokiPort}"; + } + ]; + }; + }; + + services.prometheus = { + enable = true; + + exporters.node = { + enable = true; + enabledCollectors = [ "systemd" ]; + port = cfg.prometheusExporterPort; + }; + + scrapeConfigs = [ + { + job_name = "node"; + static_configs = [{ + targets = [ "localhost:${toString cfg.prometheusExporterPort}" ]; + }]; + } + ]; + }; + + services.loki = { + enable = true; + configuration = { + server.http_listen_port = cfg.lokiPort; + auth_enabled = false; + + ingester = { + lifecycler = { + address = "127.0.0.1"; + ring = { + kvstore.store = "inmemory"; + replication_factor = 1; + }; + }; + }; + + schema_config = { + configs = [{ + store = "tsdb"; + object_store = "filesystem"; + schema = "v13"; + index = { + prefix = "index_"; + period = "24h"; + }; + }]; + }; + + storage_config = { + tsdb_shipper = { + active_index_directory = "/var/lib/loki/tsdb-active"; + cache_location = "/var/lib/loki/tsdb-cache"; + }; + }; + + compactor = { + working_directory = "/var/lib/loki"; + }; + }; + }; + + services.alloy = { + enable = true; + extraFlags = ["--server.http.listen-addr=0.0.0.0:${toString cfg.alloyUiPort}"]; + # TODO: submit PR to nixpkgs so that the alloy config can be specified as a JSON expression + configPath = pkgs.writeText "config.alloy" '' + loki.source.journal "journal" { + max_age = "12h0m0s" + relabel_rules = discovery.relabel.journal.rules + forward_to = [loki.write.default.receiver] + labels = { + host = "tente", + job = "systemd-journal", + } + } + + discovery.relabel "journal" { + targets = [] + + rule { + source_labels = ["__journal__systemd_unit"] + target_label = "unit" + } + } + + loki.write "default" { + endpoint { + url = "http://127.0.0.1:${toString cfg.lokiPort}/loki/api/v1/push" + } + external_labels = {} + } + ''; + }; + }; +} |