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|
{ config, lib, pkgs, options }:
with lib;
let
cfg = config.services.prometheus.exporters.varnish;
in
{
port = 9131;
extraOpts = {
noExit = mkOption {
type = types.bool;
default = false;
description = ''
Do not exit server on Varnish scrape errors.
'';
};
withGoMetrics = mkOption {
type = types.bool;
default = false;
description = ''
Export go runtime and http handler metrics.
'';
};
verbose = mkOption {
type = types.bool;
default = false;
description = ''
Enable verbose logging.
'';
};
raw = mkOption {
type = types.bool;
default = false;
description = ''
Enable raw stdout logging without timestamps.
'';
};
varnishStatPath = mkOption {
type = types.str;
default = "varnishstat";
description = ''
Path to varnishstat.
'';
};
instance = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
varnishstat -n value.
'';
};
healthPath = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Path under which to expose healthcheck. Disabled unless configured.
'';
};
telemetryPath = mkOption {
type = types.str;
default = "/metrics";
description = ''
Path under which to expose metrics.
'';
};
};
serviceOpts = {
path = [ pkgs.varnish ];
serviceConfig = {
RestartSec = mkDefault 1;
DynamicUser = false;
ExecStart = ''
${pkgs.prometheus-varnish-exporter}/bin/prometheus_varnish_exporter \
--web.listen-address ${cfg.listenAddress}:${toString cfg.port} \
--web.telemetry-path ${cfg.telemetryPath} \
--varnishstat-path ${escapeShellArg cfg.varnishStatPath} \
${concatStringsSep " \\\n " (cfg.extraFlags
++ optional (cfg.healthPath != null) "--web.health-path ${cfg.healthPath}"
++ optional (cfg.instance != null) "-n ${escapeShellArg cfg.instance}"
++ optional cfg.noExit "--no-exit"
++ optional cfg.withGoMetrics "--with-go-metrics"
++ optional cfg.verbose "--verbose"
++ optional cfg.raw "--raw")}
'';
};
};
}
|