100 lines
2.4 KiB
Nix
100 lines
2.4 KiB
Nix
{
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config,
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lib,
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self,
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...
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}:
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let
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domain = "home.rpqt.fr";
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allHosts = self.nixosConfigurations;
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hostInTailnetFilter = k: v: v.config.services.tailscale.enable;
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tailnetHosts = lib.filterAttrs hostInTailnetFilter allHosts;
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# Explicitly list the exporters as some are deprecated and can't be evaluated
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possibleExporterNames = [
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"node"
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];
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getEnabledExporters =
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hostname: host:
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lib.filterAttrs (k: v: v.enable == true) (
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lib.getAttrs possibleExporterNames host.config.services.prometheus.exporters
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);
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enabledExporters = lib.mapAttrs getEnabledExporters tailnetHosts;
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mkScrapeConfigExporter = hostname: exporterName: exporterCfg: {
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job_name = "${hostname}-${exporterName}";
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static_configs = [ { targets = [ "${hostname}:${toString exporterCfg.port}" ]; } ];
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relabel_configs = [
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{
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target_label = "instance";
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replacement = "${hostname}";
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}
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{
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target_label = "job";
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replacement = "${exporterName}";
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}
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];
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};
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mkScrapeConfigHost = hostname: exporters: lib.mapAttrs (mkScrapeConfigExporter hostname) exporters;
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scrapeConfigsByHost = lib.mapAttrs mkScrapeConfigHost enabledExporters;
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autogenScrapeConfigs = lib.flatten (
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map builtins.attrValues (builtins.attrValues scrapeConfigsByHost)
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);
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in
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{
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services.grafana = {
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enable = true;
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settings = {
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server = {
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http_port = 3000;
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domain = "grafana.${domain}";
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};
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};
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provision = {
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enable = true;
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datasources = {
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settings = {
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datasources = [
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{
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name = "Prometheus";
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type = "prometheus";
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access = "proxy";
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url = "http://127.0.0.1:${toString config.services.prometheus.port}";
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isDefault = true;
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}
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];
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};
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};
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};
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};
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services.nginx.virtualHosts.${config.services.grafana.settings.server.domain} = {
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forceSSL = true;
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useACMEHost = "${domain}";
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locations."/" = {
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proxyPass = "http://127.0.0.1:${toString config.services.grafana.settings.server.http_port}";
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proxyWebsockets = true;
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};
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};
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services.prometheus = {
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enable = true;
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port = 9001;
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scrapeConfigs = autogenScrapeConfigs;
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exporters = {
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node = {
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enable = true;
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enabledCollectors = [ "systemd" ];
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port = 9002;
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};
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};
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};
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}
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