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prometheus-node-exporter-lua remove zero values #24016

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Merged
1715173329 merged 1 commit into from
Dec 9, 2025
Merged

prometheus-node-exporter-lua remove zero values #24016

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2 changes: 1 addition & 1 deletion utils/prometheus-node-exporter-lua/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
include $(TOPDIR)/rules.mk

PKG_NAME:=prometheus-node-exporter-lua
PKG_VERSION:=2025.07.15
PKG_VERSION:=2025.11.22
PKG_RELEASE:=1

PKG_MAINTAINER:=Etienne CHAMPETIER <[email protected]>
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5 changes: 4 additions & 1 deletion utils/prometheus-node-exporter-lua/files/etc/init.d/prometheus-node-exporter-lua
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Expand Up @@ -11,14 +11,15 @@ _log() {
start_service() {
. /lib/functions/network.sh

local interface port listenflag cert key bind4 bind6
local interface port listenflag cert key bind4 bind6 omit_zero_values

config_load prometheus-node-exporter-lua.main
config_get keepalive "main" http_keepalive 70
config_get interface "main" listen_interface "loopback"
config_get port "main" listen_port 9100
config_get cert "main" cert
config_get key "main" key
config_get omit_zero_values "main" omit_zero_values 0

[ "$interface" = "*" ] || {
network_get_ipaddr bind4 "$interface"
Expand All @@ -31,6 +32,8 @@ start_service() {

procd_open_instance

[ "$omit_zero_values" -eq 1 ] && procd_set_param env OMIT_ZERO_VALUES=1

procd_set_param command /usr/sbin/uhttpd -f -c /dev/null -l / -L /usr/bin/prometheus-node-exporter-lua
[ $keepalive -gt 0 ] && procd_append_param command -k $keepalive

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10 changes: 9 additions & 1 deletion utils/prometheus-node-exporter-lua/files/usr/bin/prometheus-node-exporter-lua
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Expand Up @@ -8,6 +8,10 @@

socket = require("socket")

-- get configs

local omit_zero_values = os.getenv("OMIT_ZERO_VALUES") == "1"

-- Parsing

function space_split(s)
Expand Down Expand Up @@ -50,8 +54,12 @@ end

function metric(name, mtype, labels, value)
out:write("# TYPE ", name, " ", mtype, "\n")
-- omit_zero_vales config supress time series always being zero
local printall = not (mtype == "counter" and omit_zero_values)
local outputter = function(labels, value)
print_metric(name, labels, value)
if printall or tonumber(value) ~= 0 then
print_metric(name, labels, value)
end
end
if value then
outputter(labels, value)
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