Questions tagged [lua]

Lua is a lightweight, embeddable, multi-paradigm, dynamically-typed programming languague.

Filter by
Sorted by
Tagged with
-1
votes
0answers
6 views

Nginx redirect to kiabana url if memcache token exist

am making a call to nginx.From nginx i have to check if memcache have a token i want to redirect to kibana else i will throw error content_by_lua ' local memcached = require "resty....
0
votes
0answers
67 views

How can I remove all cookies except session cookies from nginx responses?

I'm serving several WordPress sites via nginx & PHP-FPM. Sometimes plugins randomly set cookies that are unwanted, and that do not have consent. For those, and for privacy in general, I want to ...
1
vote
0answers
24 views

Lua script does not close Nginx although ngx.close() defined

I am running a docker with lua-nginx image. In my Nginx conf file I call the lua script from server { } section: server { listen 80; server_name _; location /payload { content_by_lua_file ...
0
votes
0answers
14 views

lua script to set parent proxy with credentials in Apache Traffic Server

I am trying to set parent proxy in Apache Traffic Server Dynamically. I am using Lua Plugin to do the needful. Here is sample code from ATS guidelines to set parent proxy, however my requirement is to ...
0
votes
0answers
149 views

Lunajson not found in lua 5.2.3

I have installed lunajson with luarocks. When I attempt to use the module I keep getting the error below. I am just trying to decode a website that responds back with some json. The OS is running ...
0
votes
0answers
79 views

how to create failover ip settings in powerdns by using LUA record

I have a geo.yml file and I want to use LUA record to check failover server. I did try following settings but unfortunately only au.mydomain.com doesn't work in this settings What I am trying to ...
0
votes
1answer
250 views

Is it possible to avoid chunked transfer on lua nginx during body_filter_by_lua_block?

Let's say we want to change a response from a upstream, what we can do is to use Lua+nginx on the body_filter_by_lua_block phase, here's a snippet of that. server { listen 8181; location /...
0
votes
2answers
432 views

Nginx rewrite/return phase order

I know there are Nginx phases. Why does the following snippet deliver the "200 Host: example.com" instead of forwarding to Google? What would be a generally valid workaround to evaluate Lua ...
0
votes
0answers
49 views

HAProxy ratelimit with delay

Is there a way to set a limit per minute (e.g. 150 r/m) and not just have a maximum threshold of connection after which connections are blocked? I've investigated a bit and I can't find anything. I've ...
0
votes
1answer
169 views

Build LUA as dynamic Nginx module

I have found that to use LUA with Nginx I need to either: use OpenResty platform: https://openresty.org/en/installation.html pay getpagespeed subscription to fetch the module RPM build Nginx with LUA ...
0
votes
0answers
23 views

encrypt nginx lua html source code with javacript

Is there an easy way to encrypt lua html source code via javascript , so the visitors will see encrypted html source code instead of the normal html code ?
1
vote
2answers
3k views

How to install nginx mod lua on Amazon Linux 2?

I have an Amazon Linux 2 machine. I have installed NGINX with amazon-linux-extras install nginx1.12 How can I install nginx-mod-http-lua? I have tried: yum search lua and no packages are listed ...
1
vote
1answer
886 views

Lua missing socket.http module

I am using Lua with HAProxy. I have set LUA_PATH and LUA_CPATH as the following: LUA_PATH=/usr/bin/lua;/usr/bin/lua5.3;/usr/share/lua/5.3/ltn12.lua;/usr/share/lua/5.3/mime.lua;/usr/share/lua/5.3/...
2
votes
0answers
918 views

Docker. How to get environment variable in nginx access_by_lua_file lua script

I have nginx in a docker container, where FORWARD_LOG env variable has value 1. In nginx.conf: env FORWARD_LOG; My server config: server { listen 80 default_server; server_name nginx; ...
1
vote
1answer
5k views

NGINX - OpenResty - How to reverse proxy a call to 2 different servers based based on a string?

I'm trying to configure NGINX/OpenResty to proxy SOAP calls to 2 different servers based on a string present on the SOAP request. What I'm able to do: I am able to proxy requests to 2 different ...
1
vote
2answers
6k views

Permission denied when Nginx tries to write image file

I'm using Nginx for a Linux server and I have this folder /usr/local/openresty/nginx/webfolder/img where I want nginx to save my uploaded image files. So, this is what I did: 1) I changed the owner ...
1
vote
0answers
94 views

rescore spam corpus with rspamd

I recently tried to rescore my spam/ham corpus with rspamds rescoring mechanism (see the example in "Corpus test and rescore tool"), but unfortunately this ends in a runtime error. My current minimal ...
2
votes
1answer
9k views

How to properly use ENV variables in Nginx config?

I want to pass the RAILS_ENV env variable to nginx and use it to set the value for the rails_env directive. I can read the value of the variable from the environment with LUA module: location @app { ...
2
votes
0answers
51 views

How to select the preferred file transport method?

I have a problem, as I think, with my prosody configuration: When I am sending files (for example photos) bigger than ~2 or 3 megabytes (as I established experimentally) using Converstions 2.* version ...
1
vote
1answer
2k views

Unable to read a file and returns its result nginx

Using lua-nginx-module. And I'm unable to accomplish a thing wherein I'm want to modify the mtime of a file(touch.txt). I tried using .. os.execute("touch /app/directory/touch.txt") and this ...
0
votes
0answers
762 views

Configuration dnsdist

Trying to install PowerDNS 4.1 Authoritative at 127.0.0.1:5300 Recursor at 127.0.0.1:5301 Dnsdist config as in documentation But get an error: # dnsdist -C dnsdist.conf Fatal Lua error: Unknown ...
0
votes
1answer
451 views

nginx, lua and response time

I have an nginx loadbalancer which just proxies requests to a few upstream servers. Now, what I would like to do is: For one out of ten requests, I want to measure the response time of nginx (in ...
1
vote
0answers
464 views

Dynamic HTTP reverse proxy in nginx

Im trying to do the following where: nginx should accept incoming requests from clients and rewrite/proxy them to dynamic upstreams as instructed by a "dynamic routing endpoint" The dynamic routing ...
2
votes
0answers
588 views

“ssl_protocols” directive is not allowed here - How to make conditional

I have a number of servers in nginx that are using my configuration file, however I need to be able to add an if or a variable to change ssl_protocols TLSv1 TLSv1.1 TLSv1.2; to ssl_protocols TLSv1;...
1
vote
1answer
2k views

NGINX + Lua : set cache key based on upstream Response headers

I am trying to control the cache key using the upstream response header field value. The header field in questions is Common-Api in the configuration below. I keep getting nginx: [emerg] unknown "ck" ...
2
votes
1answer
3k views

Returning HTTP status 204 for GET /generate_204 using uhttpd?

To deal with the Android captive portal detection for my specific setup, I need to return an HTTP status code 204 whenever I get a GET request for /generate_204. I currently use uhttpd as my webserver,...
2
votes
1answer
898 views

Passthrough captured request in nginx with lua

I'm doing something like this: location /foo { content_by_lua_block { local reqType = ngx.var.request_method if reqType == "POST" res = ngx.location....
0
votes
1answer
405 views

nginx geotargeting and proxpass

I have a little issue with my Nginx config prototype The Scenario is following: website visitor will visit example.com. Nginx is read out with GeoIP the current location and accept language header ...
0
votes
1answer
2k views

Blocking a request with ModSecurity and lua script

I have web traffic flowing through ModSecurity. Within the ModSecurity configuration I am calling a Lua script that is running some simple analysis on the arguments of request string. Specifically, ...
1
vote
1answer
116 views

Squid3 URLrewrite - Unable to configure

I have Squid3-3.4.8 on Debian Wheezy. It is performing caching duty. I just want to replace one jpg url to another URL in my local server or outside. I have tried solutions like Volta, squidred, ...
-1
votes
3answers
1k views

PowerDNS: Is it possible to send different results based on server IP used by the client?

I would like to setup a recursive DNS server with multiple IPs all on the same PowerDNS server. Let's say: 8.8.8.1 8.8.8.2 8.8.8.3 8.8.8.4 I was wondering how I could send different responses based ...
1
vote
0answers
762 views

Lua flavored Nginx rewrite or internal redirection cycle

I'm new both to nginx and lua. I'm trying to follow this tutorial http://leafo.net/posts/creating_an_image_server.html#installation_requirements but for the life of me I can't get the nginx.conf right....
1
vote
1answer
160 views

Fixing syntax errors in lighttpd.conf?

lighttpd newbie here... We're trying to set up lighttpd to host a local django app, kiosk-style. We intend to use wsgi for this, but we're having trouble figuring out the syntax for lighttpd's config ...
1
vote
1answer
528 views

how to configure http request pipeling using wrk?

I am trying to load test nodejs helloworld, which is running on system 1 at http://10.20.10.10:5000 and I want to pipeline http requests from system 2. wrk takes a script as a parameter. I am ...
4
votes
1answer
3k views

Nginx - Empty response in error page with proxy_pass

Task: nginx config for reverse proxy to docker containers with dynamic lookup and caching. Process workflow: check cache. if upstream found — proxy if not found — request it, cache and proxy if ...
2
votes
1answer
12k views

Nginx how to run shell script on page load via lua module os execute and then serve directory listing?

So I have a bash script that I want to execute/run on each "page load" of url so that it will modify (creating symlinks) to a /public/html/ folder that I want the server to then serve. The problem ...
0
votes
1answer
386 views

High %sys utilization in Nginx cache node

We set up Nginx with Lua (openresty bundle) to be a local caching node to our file sharing server, we seperated files to chunks "50MB each" (by this method) and store them in cache to increase its ...
-2
votes
1answer
166 views

How do you “prevent powerful accounts from being used on unauthorized systems”? [closed]

I was browsing through Microsoft's Best Practices for Securing Active Directory and saw the chart linked which includes some of the best practices included in the document, rated by importance. At ...
1
vote
1answer
3k views

Nginx proxy_pass based on file extension and query string

I need to proxy_pass static assets (.js .css) based on file extension and query strings. For example: domain.com/foo.css - go to upstream1 domain.com/foo.css?V=1234 - go to upstream2 Reason is I ...
0
votes
1answer
250 views

how to install lafilefixer in ubuntu

I am getting following error while installing freeswitch on Ubuntu. libtool: link: cannot find the library /usr/src/freeswitch/libs/apr-util/xml/expat/lib/libexpat.la' or unhandled argument/usr/src/...
6
votes
2answers
1k views

Installing additional LUA modules into Redis

I'm trying to get Redis to allow EVAL (http://redis.io/commands/EVAL) to make HTTP requests. Two modules: LuaCURL and Luasocket give this ability. The Redis source code has a directory with ...
0
votes
1answer
1k views

Can't figure out how to get started with powerdns-recursor lua scripting

I have a server (Ubuntu 12.04) where I run powerdns-recursor. I'm trying to add some logic to certain requests and have got my target set on lua scripting for powerdns. I don't seem to be able to ...
3
votes
1answer
1k views

Sending data to statsd does not work in some locations with content_by_lua_file

Before Until recently I used nginx 1.4.x with zebrafishlabs/nginx-statsd as a reverse proxy for openresty (yes, I know, nginx behind nginx is stupid - keep reading please) with the following location ...
0
votes
1answer
475 views

Nginx using mysql result as variable to be used in headers more module

Without going into too much detail we have a requirement for the following: a) Query a simple single column, single row result from mysql. b) Use this variable as part of a more headers module, ...
0
votes
1answer
576 views

Running WSAPI on ngninx via FastCGI

Using Lua 5.2 with wsapi 1.6-1 and wsapi-fcgi 1.6-1 installed via luarocks, I have the following nginx configuration: server { listen 127.0.0.1:8080; server_name localhost; location / { ...
2
votes
2answers
5k views

How to improve call quality freeswitch?

Currently I have a system that makes use of FreeSWITCH for outbound calls via SIP External with flowroute and works well, but some users complain about the quality of the call. The system is running ...
0
votes
1answer
2k views

Nginx: unknown directive “ngx.flush(true)”

I'm having some trouble by using the nginx devel (ndk) and lua-module. I compiled nginx-rpm using the following configuration: ./configure \ --prefix=%{_sysconfdir}/nginx/ \ --sbin-...
7
votes
1answer
2k views

nginx lua: os.execute waitpid() failed (10: No child processes)

So, I'm trying to execute a script on every request. I know how that sounds, this is for development environment. I've added this to my nginx config access_by_lua_file "/opt/nginx/git-magic.lua"; ...
3
votes
2answers
1k views

Nginx & Lua: Hacks, optimizations & observations

Following this post on using Lua to increase nginx’s flexibility and in reducing load on the web stack I am curious to know how people are using Lua to enhance nginx’s capability. Are there any ...
3
votes
1answer
7k views

Nginx (openresty) generating random numbers

I have openresty set up on a server (nginx bundle which includes the lua module) and I'm trying to create a script which has specific odds of setting a cookie on a user's browser. My code looks like ...