diff options
Diffstat (limited to 'nixos/modules/services/monitoring/prometheus/default.nix')
| -rw-r--r-- | nixos/modules/services/monitoring/prometheus/default.nix | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/nixos/modules/services/monitoring/prometheus/default.nix b/nixos/modules/services/monitoring/prometheus/default.nix index e2ee995cea80..bf4dfc666bb6 100644 --- a/nixos/modules/services/monitoring/prometheus/default.nix +++ b/nixos/modules/services/monitoring/prometheus/default.nix @@ -10,6 +10,13 @@ let # Get a submodule without any embedded metadata: _filter = x: filterAttrs (k: v: k != "_module") x; + # a wrapper that verifies that the configuration is valid + promtoolCheck = what: name: file: pkgs.runCommand "${name}-${what}-checked" + { buildInputs = [ cfg.package ]; } '' + ln -s ${file} $out + promtool ${what} $out + ''; + # Pretty-print JSON to a file writePrettyJSON = name: x: pkgs.runCommand name { } '' @@ -19,18 +26,19 @@ let # This becomes the main config file promConfig = { global = cfg.globalConfig; - rule_files = cfg.ruleFiles ++ [ + rule_files = map (promtoolCheck "check-rules" "rules") (cfg.ruleFiles ++ [ (pkgs.writeText "prometheus.rules" (concatStringsSep "\n" cfg.rules)) - ]; + ]); scrape_configs = cfg.scrapeConfigs; }; generatedPrometheusYml = writePrettyJSON "prometheus.yml" promConfig; - prometheusYml = - if cfg.configText != null then + prometheusYml = let + yml = if cfg.configText != null then pkgs.writeText "prometheus.yml" cfg.configText - else generatedPrometheusYml; + else generatedPrometheusYml; + in promtoolCheck "check-config" "prometheus.yml" yml; cmdlineArgs = cfg.extraFlags ++ [ "-storage.local.path=${cfg.dataDir}/metrics" @@ -376,6 +384,15 @@ in { ''; }; + package = mkOption { + type = types.package; + default = pkgs.prometheus; + defaultText = "pkgs.prometheus"; + description = '' + The prometheus package that should be used. + ''; + }; + listenAddress = mkOption { type = types.str; default = "0.0.0.0:9090"; @@ -495,7 +512,7 @@ in { after = [ "network.target" ]; script = '' #!/bin/sh - exec ${pkgs.prometheus}/bin/prometheus \ + exec ${cfg.package}/bin/prometheus \ ${concatStringsSep " \\\n " cmdlineArgs} ''; serviceConfig = { |