nixos/prometheus: remove prometheus1 module, rename prometheus2
Prometheus 1 is no longer supported, instead 'services.prometheus' now configures the Prometheus 2 service.
This commit is contained in:
WilliButz
@@ -4,37 +4,14 @@ with lib;
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let
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cfg = config.services.prometheus;
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cfg2 = config.services.prometheus2;
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promUser = "prometheus";
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promGroup = "prometheus";
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stateDir =
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if cfg.stateDir != null
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then cfg.stateDir
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else
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if cfg.dataDir != null
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then
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# This assumes /var/lib/ is a prefix of cfg.dataDir.
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# This is checked as an assertion below.
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removePrefix stateDirBase cfg.dataDir
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else "prometheus";
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stateDirBase = "/var/lib/";
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workingDir = stateDirBase + stateDir;
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workingDir2 = stateDirBase + cfg2.stateDir;
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workingDir = "/var/lib/" + cfg.stateDir;
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# a wrapper that verifies that the configuration is valid
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promtoolCheck = what: name: file: pkgs.runCommand "${name}-${what}-checked"
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{ buildInputs = [ cfg.package ]; } ''
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ln -s ${file} $out
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promtool ${what} $out
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'';
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# a wrapper that verifies that the configuration is valid for
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# prometheus 2
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prom2toolCheck = what: name: file:
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promtoolCheck = what: name: file:
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pkgs.runCommand
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"${name}-${replaceStrings [" "] [""] what}-checked"
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{ buildInputs = [ cfg2.package ]; } ''
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{ buildInputs = [ cfg.package ]; } ''
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ln -s ${file} $out
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promtool ${what} $out
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'';
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@@ -45,61 +22,34 @@ let
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echo '${builtins.toJSON x}' | ${pkgs.jq}/bin/jq . > $out
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'';
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# This becomes the main config file for Prometheus 1
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generatedPrometheusYml = writePrettyJSON "prometheus.yml" promConfig;
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# This becomes the main config file for Prometheus
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promConfig = {
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global = filterValidPrometheus cfg.globalConfig;
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rule_files = map (promtoolCheck "check-rules" "rules") (cfg.ruleFiles ++ [
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rule_files = map (promtoolCheck "check rules" "rules") (cfg.ruleFiles ++ [
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(pkgs.writeText "prometheus.rules" (concatStringsSep "\n" cfg.rules))
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]);
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scrape_configs = filterValidPrometheus cfg.scrapeConfigs;
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alerting = {
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inherit (cfg) alertmanagers;
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};
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};
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generatedPrometheusYml = writePrettyJSON "prometheus.yml" promConfig;
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prometheusYml = let
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yml = if cfg.configText != null then
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pkgs.writeText "prometheus.yml" cfg.configText
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else generatedPrometheusYml;
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in promtoolCheck "check-config" "prometheus.yml" yml;
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in promtoolCheck "check config" "prometheus.yml" yml;
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cmdlineArgs = cfg.extraFlags ++ [
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"-storage.local.path=${workingDir}/metrics"
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"-config.file=${prometheusYml}"
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"-web.listen-address=${cfg.listenAddress}"
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"-alertmanager.notification-queue-capacity=${toString cfg.alertmanagerNotificationQueueCapacity}"
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"-alertmanager.timeout=${toString cfg.alertmanagerTimeout}s"
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"--storage.tsdb.path=${workingDir}/data/"
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"--config.file=${prometheusYml}"
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"--web.listen-address=${cfg.listenAddress}"
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"--alertmanager.notification-queue-capacity=${toString cfg.alertmanagerNotificationQueueCapacity}"
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"--alertmanager.timeout=${toString cfg.alertmanagerTimeout}s"
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] ++
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optional (cfg.alertmanagerURL != []) "-alertmanager.url=${concatStringsSep "," cfg.alertmanagerURL}" ++
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optional (cfg.webExternalUrl != null) "-web.external-url=${cfg.webExternalUrl}";
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# This becomes the main config file for Prometheus 2
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promConfig2 = {
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global = filterValidPrometheus cfg2.globalConfig;
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rule_files = map (prom2toolCheck "check rules" "rules") (cfg2.ruleFiles ++ [
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(pkgs.writeText "prometheus.rules" (concatStringsSep "\n" cfg2.rules))
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]);
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scrape_configs = filterValidPrometheus cfg2.scrapeConfigs;
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alerting = {
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inherit (cfg2) alertmanagers;
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};
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};
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generatedPrometheus2Yml = writePrettyJSON "prometheus.yml" promConfig2;
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prometheus2Yml = let
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yml = if cfg2.configText != null then
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pkgs.writeText "prometheus.yml" cfg2.configText
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else generatedPrometheus2Yml;
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in prom2toolCheck "check config" "prometheus.yml" yml;
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cmdlineArgs2 = cfg2.extraFlags ++ [
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"--storage.tsdb.path=${workingDir2}/data/"
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"--config.file=${prometheus2Yml}"
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"--web.listen-address=${cfg2.listenAddress}"
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"--alertmanager.notification-queue-capacity=${toString cfg2.alertmanagerNotificationQueueCapacity}"
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"--alertmanager.timeout=${toString cfg2.alertmanagerTimeout}s"
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] ++
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optional (cfg2.webExternalUrl != null) "--web.external-url=${cfg2.webExternalUrl}";
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optional (cfg.webExternalUrl != null) "--web.external-url=${cfg.webExternalUrl}";
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filterValidPrometheus = filterAttrsListRecursive (n: v: !(n == "_module" || v == null));
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filterAttrsListRecursive = pred: x:
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@@ -514,343 +464,159 @@ let
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};
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in {
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options = {
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services.prometheus = {
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options.services.prometheus = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Enable the Prometheus monitoring daemon.
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'';
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};
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Enable the Prometheus monitoring daemon.
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'';
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};
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package = mkOption {
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type = types.package;
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default = pkgs.prometheus;
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defaultText = "pkgs.prometheus";
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description = ''
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The prometheus package that should be used.
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'';
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};
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package = mkOption {
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type = types.package;
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default = pkgs.prometheus;
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defaultText = "pkgs.prometheus";
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description = ''
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The prometheus package that should be used.
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'';
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};
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listenAddress = mkOption {
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type = types.str;
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default = "0.0.0.0:9090";
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description = ''
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Address to listen on for the web interface, API, and telemetry.
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'';
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};
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listenAddress = mkOption {
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type = types.str;
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default = "0.0.0.0:9090";
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description = ''
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Address to listen on for the web interface, API, and telemetry.
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'';
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};
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dataDir = mkOption {
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type = types.nullOr types.path;
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default = null;
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description = ''
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Directory to store Prometheus metrics data.
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This option is deprecated, please use <option>services.prometheus.stateDir</option>.
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'';
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};
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stateDir = mkOption {
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type = types.str;
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default = "prometheus2";
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description = ''
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Directory below <literal>/var/lib</literal> to store Prometheus metrics data.
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This directory will be created automatically using systemd's StateDirectory mechanism.
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'';
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};
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stateDir = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = ''
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Directory below <literal>${stateDirBase}</literal> to store Prometheus metrics data.
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This directory will be created automatically using systemd's StateDirectory mechanism.
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Defaults to <literal>prometheus</literal>.
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'';
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};
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extraFlags = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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Extra commandline options when launching Prometheus.
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'';
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};
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extraFlags = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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Extra commandline options when launching Prometheus.
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'';
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};
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configText = mkOption {
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type = types.nullOr types.lines;
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default = null;
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description = ''
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If non-null, this option defines the text that is written to
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prometheus.yml. If null, the contents of prometheus.yml is generated
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from the structured config options.
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'';
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};
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configText = mkOption {
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type = types.nullOr types.lines;
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default = null;
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description = ''
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If non-null, this option defines the text that is written to
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prometheus.yml. If null, the contents of prometheus.yml is generated
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from the structured config options.
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'';
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};
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globalConfig = mkOption {
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type = promTypes.globalConfig;
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default = {};
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description = ''
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Parameters that are valid in all configuration contexts. They
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also serve as defaults for other configuration sections
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'';
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};
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globalConfig = mkOption {
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type = promTypes.globalConfig;
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default = {};
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description = ''
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Parameters that are valid in all configuration contexts. They
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also serve as defaults for other configuration sections
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'';
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};
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rules = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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Alerting and/or Recording rules to evaluate at runtime.
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'';
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};
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rules = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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Alerting and/or Recording rules to evaluate at runtime.
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'';
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};
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ruleFiles = mkOption {
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type = types.listOf types.path;
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default = [];
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description = ''
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Any additional rules files to include in this configuration.
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'';
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};
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ruleFiles = mkOption {
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type = types.listOf types.path;
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default = [];
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description = ''
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Any additional rules files to include in this configuration.
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'';
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};
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scrapeConfigs = mkOption {
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type = types.listOf promTypes.scrape_config;
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default = [];
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description = ''
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A list of scrape configurations.
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'';
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};
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scrapeConfigs = mkOption {
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type = types.listOf promTypes.scrape_config;
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default = [];
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description = ''
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A list of scrape configurations.
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'';
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};
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alertmanagers = mkOption {
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type = types.listOf types.attrs;
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example = literalExample ''
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[ {
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scheme = "https";
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path_prefix = "/alertmanager";
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static_configs = [ {
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targets = [
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"prometheus.domain.tld"
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];
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} ];
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} ]
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'';
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default = [];
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description = ''
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A list of alertmanagers to send alerts to.
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See <link xlink:href="https://prometheus.io/docs/prometheus/latest/configuration/configuration/#alertmanager_config">the official documentation</link> for more information.
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'';
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};
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alertmanagerURL = mkOption {
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type = types.listOf types.str;
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default = [];
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description = ''
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List of Alertmanager URLs to send notifications to.
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'';
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};
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alertmanagerNotificationQueueCapacity = mkOption {
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type = types.int;
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default = 10000;
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description = ''
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The capacity of the queue for pending alert manager notifications.
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'';
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};
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alertmanagerNotificationQueueCapacity = mkOption {
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type = types.int;
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default = 10000;
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description = ''
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The capacity of the queue for pending alert manager notifications.
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'';
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};
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alertmanagerTimeout = mkOption {
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type = types.int;
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default = 10;
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description = ''
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Alert manager HTTP API timeout (in seconds).
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'';
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};
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alertmanagerTimeout = mkOption {
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type = types.int;
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default = 10;
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description = ''
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Alert manager HTTP API timeout (in seconds).
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'';
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};
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webExternalUrl = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "https://example.com/";
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description = ''
|
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The URL under which Prometheus is externally reachable (for example,
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if Prometheus is served via a reverse proxy).
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'';
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};
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};
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webExternalUrl = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "https://example.com/";
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description = ''
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The URL under which Prometheus is externally reachable (for example,
|
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if Prometheus is served via a reverse proxy).
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'';
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config = mkIf cfg.enable {
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users.groups.prometheus.gid = config.ids.gids.prometheus;
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users.users.prometheus = {
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description = "Prometheus daemon user";
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uid = config.ids.uids.prometheus;
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group = "prometheus";
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};
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systemd.services.prometheus = {
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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serviceConfig = {
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ExecStart = "${cfg.package}/bin/prometheus" +
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optionalString (length cmdlineArgs != 0) (" \\\n " +
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concatStringsSep " \\\n " cmdlineArgs);
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User = "prometheus";
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Restart = "always";
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WorkingDirectory = workingDir;
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StateDirectory = cfg.stateDir;
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};
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};
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services.prometheus2 = {
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enable = mkOption {
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type = types.bool;
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default = false;
|
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description = ''
|
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Enable the Prometheus 2 monitoring daemon.
|
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'';
|
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};
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package = mkOption {
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type = types.package;
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default = pkgs.prometheus_2;
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defaultText = "pkgs.prometheus_2";
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description = ''
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The prometheus2 package that should be used.
|
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'';
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};
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|
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listenAddress = mkOption {
|
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type = types.str;
|
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default = "0.0.0.0:9090";
|
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description = ''
|
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Address to listen on for the web interface, API, and telemetry.
|
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'';
|
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};
|
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|
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stateDir = mkOption {
|
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type = types.str;
|
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default = "prometheus2";
|
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description = ''
|
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Directory below <literal>${stateDirBase}</literal> to store Prometheus metrics data.
|
||||
This directory will be created automatically using systemd's StateDirectory mechanism.
|
||||
Defaults to <literal>prometheus2</literal>.
|
||||
'';
|
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};
|
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|
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extraFlags = mkOption {
|
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type = types.listOf types.str;
|
||||
default = [];
|
||||
description = ''
|
||||
Extra commandline options when launching Prometheus 2.
|
||||
'';
|
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};
|
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|
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configText = mkOption {
|
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type = types.nullOr types.lines;
|
||||
default = null;
|
||||
description = ''
|
||||
If non-null, this option defines the text that is written to
|
||||
prometheus.yml. If null, the contents of prometheus.yml is generated
|
||||
from the structured config options.
|
||||
'';
|
||||
};
|
||||
|
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globalConfig = mkOption {
|
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type = promTypes.globalConfig;
|
||||
default = {};
|
||||
description = ''
|
||||
Parameters that are valid in all configuration contexts. They
|
||||
also serve as defaults for other configuration sections
|
||||
'';
|
||||
};
|
||||
|
||||
rules = mkOption {
|
||||
type = types.listOf types.str;
|
||||
default = [];
|
||||
description = ''
|
||||
Alerting and/or Recording rules to evaluate at runtime.
|
||||
'';
|
||||
};
|
||||
|
||||
ruleFiles = mkOption {
|
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type = types.listOf types.path;
|
||||
default = [];
|
||||
description = ''
|
||||
Any additional rules files to include in this configuration.
|
||||
'';
|
||||
};
|
||||
|
||||
scrapeConfigs = mkOption {
|
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type = types.listOf promTypes.scrape_config;
|
||||
default = [];
|
||||
description = ''
|
||||
A list of scrape configurations.
|
||||
'';
|
||||
};
|
||||
|
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alertmanagers = mkOption {
|
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type = types.listOf types.attrs;
|
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example = literalExample ''
|
||||
[ {
|
||||
scheme = "https";
|
||||
path_prefix = "/alertmanager";
|
||||
static_configs = [ {
|
||||
targets = [
|
||||
"prometheus.domain.tld"
|
||||
];
|
||||
} ];
|
||||
} ]
|
||||
'';
|
||||
default = [];
|
||||
description = ''
|
||||
A list of alertmanagers to send alerts to.
|
||||
See <link xlink:href="https://prometheus.io/docs/prometheus/latest/configuration/configuration/#alertmanager_config">the official documentation</link> for more information.
|
||||
'';
|
||||
};
|
||||
|
||||
alertmanagerNotificationQueueCapacity = mkOption {
|
||||
type = types.int;
|
||||
default = 10000;
|
||||
description = ''
|
||||
The capacity of the queue for pending alert manager notifications.
|
||||
'';
|
||||
};
|
||||
|
||||
alertmanagerTimeout = mkOption {
|
||||
type = types.int;
|
||||
default = 10;
|
||||
description = ''
|
||||
Alert manager HTTP API timeout (in seconds).
|
||||
'';
|
||||
};
|
||||
|
||||
webExternalUrl = mkOption {
|
||||
type = types.nullOr types.str;
|
||||
default = null;
|
||||
example = "https://example.com/";
|
||||
description = ''
|
||||
The URL under which Prometheus is externally reachable (for example,
|
||||
if Prometheus is served via a reverse proxy).
|
||||
'';
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
config = mkMerge [
|
||||
(mkIf (cfg.enable || cfg2.enable) {
|
||||
users.groups.${promGroup}.gid = config.ids.gids.prometheus;
|
||||
users.users.${promUser} = {
|
||||
description = "Prometheus daemon user";
|
||||
uid = config.ids.uids.prometheus;
|
||||
group = promGroup;
|
||||
};
|
||||
})
|
||||
(mkIf cfg.enable {
|
||||
warnings =
|
||||
optional (cfg.dataDir != null) ''
|
||||
The option services.prometheus.dataDir is deprecated, please use
|
||||
services.prometheus.stateDir.
|
||||
'';
|
||||
assertions = [
|
||||
{
|
||||
assertion = !(cfg.dataDir != null && cfg.stateDir != null);
|
||||
message =
|
||||
"The options services.prometheus.dataDir and services.prometheus.stateDir" +
|
||||
" can't both be set at the same time! It's recommended to only set the latter" +
|
||||
" since the former is deprecated.";
|
||||
}
|
||||
{
|
||||
assertion = cfg.dataDir != null -> hasPrefix stateDirBase cfg.dataDir;
|
||||
message =
|
||||
"The option services.prometheus.dataDir should have ${stateDirBase} as a prefix!";
|
||||
}
|
||||
{
|
||||
assertion = cfg.stateDir != null -> !hasPrefix "/" cfg.stateDir;
|
||||
message =
|
||||
"The option services.prometheus.stateDir shouldn't be an absolute directory." +
|
||||
" It should be a directory relative to ${stateDirBase}.";
|
||||
}
|
||||
{
|
||||
assertion = cfg2.stateDir != null -> !hasPrefix "/" cfg2.stateDir;
|
||||
message =
|
||||
"The option services.prometheus2.stateDir shouldn't be an absolute directory." +
|
||||
" It should be a directory relative to ${stateDirBase}.";
|
||||
}
|
||||
];
|
||||
systemd.services.prometheus = {
|
||||
wantedBy = [ "multi-user.target" ];
|
||||
after = [ "network.target" ];
|
||||
serviceConfig = {
|
||||
ExecStart = "${cfg.package}/bin/prometheus" +
|
||||
optionalString (length cmdlineArgs != 0) (" \\\n " +
|
||||
concatStringsSep " \\\n " cmdlineArgs);
|
||||
User = promUser;
|
||||
Restart = "always";
|
||||
WorkingDirectory = workingDir;
|
||||
StateDirectory = stateDir;
|
||||
};
|
||||
};
|
||||
})
|
||||
(mkIf cfg2.enable {
|
||||
systemd.services.prometheus2 = {
|
||||
wantedBy = [ "multi-user.target" ];
|
||||
after = [ "network.target" ];
|
||||
serviceConfig = {
|
||||
ExecStart = "${cfg2.package}/bin/prometheus" +
|
||||
optionalString (length cmdlineArgs2 != 0) (" \\\n " +
|
||||
concatStringsSep " \\\n " cmdlineArgs2);
|
||||
User = promUser;
|
||||
Restart = "always";
|
||||
WorkingDirectory = workingDir2;
|
||||
StateDirectory = cfg2.stateDir;
|
||||
};
|
||||
};
|
||||
})
|
||||
];
|
||||
};
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user