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prometheus-node-exporter-lua: add unbound stats collector

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- New unbound.lua exporter module for unbound stats
- Updated Makefile

Signed-off-by: Bruno Marinier <bmgm41@gmail.com>
This commit is contained in:
Bruno Marinier
2026-06-08 15:25:29 -04:00
committed by Etienne Champetier
parent f71b573190
commit 4238239218
2 changed files with 74 additions and 1 deletions
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utils/prometheus-node-exporter-lua/Makefile
+18 -1
View File
@@ -4,7 +4,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=prometheus-node-exporter-lua
PKG_VERSION:=2026.05.10
PKG_VERSION:=2026.06.05
PKG_RELEASE:=1
PKG_MAINTAINER:=Etienne CHAMPETIER <champetier.etienne@gmail.com>
@@ -301,6 +301,22 @@ define Package/prometheus-node-exporter-lua-modemmanager/install
$(INSTALL_DATA) ./files/usr/lib/lua/prometheus-collectors/modemmanager.lua $(1)/usr/lib/lua/prometheus-collectors/
endef
define Package/prometheus-node-exporter-lua-unbound
$(call Package/prometheus-node-exporter-lua/Default)
TITLE+= (unbound stats collector)
DEPENDS:=prometheus-node-exporter-lua +unbound-daemon
endef
define Package/prometheus-node-exporter-lua-unbound/description
Adds a Unbound stats collector to the Prometheus node exporter.
Refer to https://github.com/marinierb/prometheus-node-exporter-lua-unbound for configuration details.
endef
define Package/prometheus-node-exporter-lua-unbound/install
$(INSTALL_DIR) $(1)/usr/lib/lua/prometheus-collectors
$(INSTALL_DATA) ./files/usr/lib/lua/prometheus-collectors/unbound.lua $(1)/usr/lib/lua/prometheus-collectors/
endef
$(eval $(call BuildPackage,prometheus-node-exporter-lua))
$(eval $(call BuildPackage,prometheus-node-exporter-lua-bmx7))
$(eval $(call BuildPackage,prometheus-node-exporter-lua-dawn))
@@ -324,3 +340,4 @@ $(eval $(call BuildPackage,prometheus-node-exporter-lua-mwan3))
$(eval $(call BuildPackage,prometheus-node-exporter-lua-ethtool))
$(eval $(call BuildPackage,prometheus-node-exporter-lua-nft-counters))
$(eval $(call BuildPackage,prometheus-node-exporter-lua-modemmanager))
$(eval $(call BuildPackage,prometheus-node-exporter-lua-unbound))
utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/unbound.lua
+56
View File
@@ -0,0 +1,56 @@
-- Unbound stats exporter
local socket = require("socket")
local unix = require("socket.unix")
local function scrape()
local metrics = {
["total.num.queries" ] = metric("unbound_num_queries_total", "counter"),
["total.num.queries_ip_ratelimited" ] = metric("unbound_num_queries_ip_ratelimited_total", "counter"),
["total.num.queries_cookie_valid" ] = metric("unbound_num_queries_cookie_valid_total", "counter"),
["total.num.queries_cookie_client" ] = metric("unbound_num_queries_cookie_client_total", "counter"),
["total.num.queries_cookie_invalid" ] = metric("unbound_num_queries_cookie_invalid_total", "counter"),
["total.num.queries_discard_timeout"] = metric("unbound_num_queries_discard_timeout_total","counter"),
["total.num.queries_wait_limit" ] = metric("unbound_num_queries_wait_limit_total", "counter"),
["total.num.cachehits" ] = metric("unbound_cachehits_total", "counter"),
["total.num.cachemiss" ] = metric("unbound_cachemiss_total", "counter"),
["total.num.prefetch" ] = metric("unbound_prefetch_total", "counter"),
["total.num.queries_timed_out" ] = metric("unbound_num_queries_timed_out_total", "counter"),
["total.query.queue_time_us.max" ] = metric("unbound_query_queue_time_us_max", "gauge"),
["total.num.expired" ] = metric("unbound_num_expired_total", "counter"),
["total.num.recursivereplies" ] = metric("unbound_num_recursivereplies_total", "counter"),
["total.num.dns_error_reports" ] = metric("unbound_num_dns_error_reports_total", "counter"),
["total.requestlist.avg" ] = metric("unbound_requestlist_avg", "gauge"),
["total.requestlist.max" ] = metric("unbound_requestlist_max", "gauge"),
["total.requestlist.overwritten" ] = metric("unbound_requestlist_overwritten_total", "counter"),
["total.requestlist.exceeded" ] = metric("unbound_requestlist_exceeded_total", "counter"),
["total.requestlist.current.all" ] = metric("unbound_requestlist_current_all", "gauge"),
["total.requestlist.current.user" ] = metric("unbound_requestlist_current_user", "gauge"),
["total.recursion.time.avg" ] = metric("unbound_recursion_time_avg", "gauge"),
["total.recursion.time.median" ] = metric("unbound_recursion_time_median", "gauge"),
}
local sock = unix()
local ok, err = sock:connect("/run/unbound.ctl")
if not ok then
return nil, "failed to connect to unbound socket: " .. (err or "unknown")
end
sock:settimeout(1)
sock:send("UBCT1 stats_noreset\n")
local out = sock:receive("*a")
sock:close()
for line in out:gmatch("[^\r\n]+") do
local key, val = line:match("^([^=]+)=(.+)$")
if key and val then
local n = tonumber(val)
if metrics[key] then
metrics[key]({}, n)
end
end
end
end
return { scrape = scrape }