SPspacewander·Aug 4, 2020
You can look at https://github.com/knyar/nginx-lua-prometheus/pull/75 for inspiration.
In Migrating Dropbox from Nginx to Envoyknyar
nginx-lua-prometheus
Lua2017–2020
knyar / nginx-lua-prometheus
nginx-lua-prometheus
Prometheus metric library for Nginx written in Lua
3Distinct people
4Mentions
0Explicit recommenders
1.6KGitHub stars
What to know before exploring
What it is
Prometheus metric library for Nginx written in Lua
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
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This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.
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Mentions over time
HN mentions by year4 dated mentions
Observed mentions: 2017-09-27 10:02:18 UTC to 2020-08-04 12:50:30 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
4 sourcesNginx is an amazing workhorse and can help out with logging/monitoring/metrics.
Some tools I like to use to improve the experience:
* Fluentular [1] - A tool for matching Fluentd log parsing to your customized nginx log format
* Nginx-lua-prometheus [2] - Library for exposing request data to prometheus
[1] https://fluentular.herokuapp.com/
[2] https://github.com/knyar/nginx-lua-prometheus
In Tell Me More, Nginx (2017)I honestly don't know, I never made serious performance tests. The external exporter can make use of every variable that nginx is able to use in a log_format. I guess the internal Lua scripting has access to even more data.
Performance wise I assume the external exporter has less impact on Nginx' operation because it doesn't keep shared state or run code inside Nginx at all (see https://github.com/knyar/nginx-lua-prometheus#caveats), all Ngnix does is push out log records over syslog/UDP. If the exporter should overload that doesn't concern Nginx at all, what happens is that observations get dropped.
In HAProxy vs. Nginx for load balancing (2016)I'm pretty much in love with Nginx' simplicity and capabilities as a swiss army knife for all kinds of HTTP magic.
I had some doubts about Nginx' direction and feature development, but most really great features (like stream proxy with SNI support) make their way into the open source release. Built in monitoring sucks though. There are options for better monitoring your requests with Prometheus.
This project implements prometheus metrics using Lua scripting inside Nginx:
https://github.com/knyar/nginx-lua-prometheus
This project is indended as a sidecar service to nginx and receives access logs and timings using syslog protocol (Nginx has a native syslog over UDP capabilities) so no scripting inside Nginx is necessary:
https://github.com/markuslindenberg/nginx_request_exporter
(I'm the author of this exporter)
In HAProxy vs. Nginx for load balancing (2016)