Questions tagged [502-error]

HTTP Error 502 Bad gateway

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502 bad gateway/ nginx / aspnet core

I had a coworker that made a homegrown application that interfaces with nginx. The application querys our SQL server and then displays information on a webpage via nginx. He used the following article ...
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Apache HTTP proxy work for some destination ip and receive 502 Bad Request from other destinations

I've an HTTP proxy like this: Listen 8240 <VirtualHost *:8240> ProxyRequests On <Proxy "*"> SetEnv force-proxy-request-1.0 1 SetEnv proxy-nokeepalive 1 </Proxy> </...
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1answer
59 views

phpmyadmin error 502 Bad Gateway on nginex

i just installed phpmyadmin on my ubuntu 20.04 server but when I try to go to the site I have a 502 bad gateway error ... here is what I have in my LOG file : 2021/02/05 14:43:33 [crit] 662288#662288: ...
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29 views

Occasional 502 error with Apache behind AWS application load balancer?

I run a small education website that's experienced some significant growth recently (now seeing maybe a 1-2 million requests per day). We run 6 EC2 web servers behind an application load balancer, ...
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1answer
191 views

Wordpress import process ends in 502 Bad Gateway error

I have a Wordpress website which have been working flawlessly for a while now in a LEMP with Ubuntu. However, today I had to import a previously exported XML from another Wordpress and in the middle ...
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566 views

502 Bad Gateway when uploading files (NGINX and NodeJS)

I am developing an app where the user can upload files. While the backend call seems to work fine, the call when uploading files returns a 502 Bad Gateway message. The files actually get uploaded but ...
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78 views

502 Error from nginx server after setting up http2 and ssl

I am getting a 502 error from my nginx server. I used certbot to configure the ssl and am trying to get http2 enabled and somehow i broke the server. when I run sudo nginx -t it reads: nginx: [warn] ...
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1answer
410 views

PHP/FPM/Nginx Issue: Runs fine for a hours, then maxes FPM children in a matter of seconds, resulting in 502 errors

We recently migrated a long running (without issue) Ubuntu 16.04 / nginx (1.10.3) / PHP 7.0 stack over to an Ubuntu 18.04 / nginx (1.14.0) / PHP 7.2 stack. The result has caused instability at the PHP-...
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1k views

Laravel docker cron nginx 502 bad gateway issue

I am using my laravel app in a docker container. Everything worked fine until I added a cron to the dockerfile. I need to schedule a job so I need a cron. My compose file looks like this version: '3' ...
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13 views

nginx failed to run on localhost because address is already in use, but no other process is listening on the same port

my macbook air restarted itself a couple of days ago for some reason, after that restart i kept getting the error 502 whenever i try to access my localhost. i googled and searched and none of the ...
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1answer
184 views

Nginx custom 502 page with nested proxies

I know how to create a custom 502 page for an upstream error and did it without problems many times, however in this particular case where one proxied response is passed to another proxy I can't find ...
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39 views

My web application is running on One Server and two worker nodes

my nginx config file is server { listen ip-address:80 ; server_name subdomain.domain.com; server_name www.subdomain.domain.com; server_name ipv4.subdomain.domain.com; ...
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1answer
135 views

Lighttpd/Nginx Non-Functional

I'm using the Blackboard AMI from AWS and can't get the lighttpd to function on it. I continually get 502s. I've run service lighttpd status which gave me back: ● lighttpd.service - Lighttpd Daemon ...
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1answer
3k views

How to configure nginx.conf and php-fpm using brew servinces in MAC-OS in order to run php?

I have following logs in php-fpm log . [19-Jan-2020 15:09:33] NOTICE: [pool www] 'user' directive is ignored when FPM is not running as root [19-Jan-2020 15:09:33] NOTICE: [pool www] 'user' directive ...
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1answer
2k views

Proxy Error 502 “Error reading from remote server” Apache 2.4.18 Ubuntu with HTTPS into Docker container

I'm no expert and can't see what's the problem, but obviously this error is caused by a tiny detail it seems I can't debug. Any idea? What I have: I have multiple virtual hosts configured with Apache2 ...
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1k views

Failed WebSocket connection handshake error response code: 502

I am facing a weird nginx + websocket related issue so wanted to ask if any of you can give me an idea what is causing this error and if there is any way to fix it. I run a chatroom website (https) ...
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1answer
2k views

nginx gunicorn django 502 worker timeout just on some pages

I configured a django app with gunicorn and nginx all was working perfectly until the installation of SSL certifiate on the server. firstly all pages were served perfectly but after some time some ...
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1answer
130 views

Apache Local virtualhosts not working (502 error) [closed]

My local dev environment consists of a mac with OSX El Capitan 10.11.6. I have Apache 2.4.28 installed. Something seems to have gone wrong with my virtual host configuration as none of my local ...
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1answer
8k views

Difference between keepalive in apache2.conf and in ProxyPass

I am using Apache 2.2.22 What is the difference, if there is any, between the Keepalive directive in /etc/apache2/apache2.conf # # KeepAlive: Whether or not to allow persistent connections (more ...
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1answer
2k views

Almost all the http APIs return a 502 bad gateway error after adding a CDN

I just added my website to a CDN provider https://www.qiniu.com/en. Then I realised that almost all my http APIs (https://www.funfun.ink/httpOnly...) returned a 502 bad gateway error. Additionally, ...
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1answer
717 views

After upgrade from ubuntu 14.04 to 16.04, nginx error 502: bad gateway until nginx is restarted

I have researched this problem, but in most cases the cause of the 502 error is an improperly configured nginx.conf or upstream service. I believe this is different.. As the title suggests, I ...
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461 views

HTTP 502 (Bad Gateway), niginx connect() to 127.0.0.1:8889 failed (99: Cannot assign requested address) while connecting to upstream

We have a server application running behind nginx, and the client side will keep getting and writing data to it through HTTP request but should return really fast. After running sometime, client side ...
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1answer
860 views

502 error when wordpress site hosted on AWS, but not Google cloud

I've got a problem with my wordpress site that means I get a 502 bad gateway error. The site is hosted on AWS (EC2 instance). I migrated the site to a google cloud instance to test if that would ...
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2answers
6k views

NGINX and PHP-FPM 502 bad gateway

Ok so here is the situation, we currently have a server and we are now migrating to AWS. We have somehow identical configuration and we already tried to run apache benchmark so the PHP-FPM pool is ...
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2answers
83 views

How to config Ngnix to achieve any possible website error for testing [closed]

I'm developing a website using Django framework and Nginx. Would like to create a false system error and observer how my system responds. This is a nice article however this only create false Error ...
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1answer
45 views

Apache server throw me 502 error when I try to access site with Public IP

I have a little strange case. I configured two servers in AWS: Develop and QA, the two with Ubuntu 16.04, Apache 2 and PHP 7.0. I created a website en Develop, and configured its VirtualHost file. So,...
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875 views

centOS 7 nginx 502 bad gateway error [closed]

im using VPS with 2 cores 3GB ram 1.5GB swap i been using nginx for more than year and i have not had any problem, nginx only uses between 300 to 700MB ram only my website is not so busy i get between ...
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1answer
10k views

Nexus returns error 502 (Bad Gateway) when publishing artifacts

I've just completed the installation of Sonatype Nexus 3.2.1-01 and I'm trying to publish some artifacts using a Jenkins job and the Nexus Artifact Uploader 2.9 plugin. The upload starts fine: 100 % ...
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1answer
16k views

Nginx reverse proxying to upstream getting 502 Bad Gateway?

My current Application deployment is receiving traffic on HTTP port and Nginx redirect it to HTTPS. This is working fine. Now we are planning to have another Nginx server act like a Load balancer to ...
2
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1answer
14k views

502 “Error reading from remote server” when upstream service errors

I have apache set up as a reverse proxy. When the upstream service has an error (e.g. 500) the error is not returned to the client, but instead apache serves up a 502 "Error reading from remote server"...
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1answer
9k views

502 bad gateway nginx and apache servers

Hello there can you please help me im trying to setup apache and nginx server on my ubuntu 16.04 server, but when i try to visit localhost/info.php fo example im getting 502 Bad Gateway nginx/1.9....
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0answers
3k views

Squid 502 errors

I am using Squid 3.3.13 with no cache enabled and all my clients in LAN are using it to access to HTTP and HTTPS websites. I am not using it as transparent proxy but clients have it configured in OS ...
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2answers
1k views

Setup GitLab behind nginx with https and responding on different port

Dear serverfault community, I have recently installed bundled GitLab on my VPS running Ubuntu14.04. To get it running, I have used nginx, which is routing one particular subdomain to GitLab over http....
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2k views

Listening to 127.0.0.1:9000 but var/run/php5-fpm.sock failed (2: No such file or directory)

I have a webserver configured to accept FastCGI requests at 127.0.0.1:9000 like below. /etc/php5/fpm/pool.d/www.conf: listen = 127.0.0.1:9000 /etc/nginx/sites-enabled/mysite: location ~ .php$ { ...
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2answers
137 views

nginx default error page stopped working for some reason

This used to work: server { server_name example.com; location / { proxy_pass http://localhost:8888; error_page 502 /502.html; } location = /502.html { root /var/www/example; } ...
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0answers
145 views

How to distinguish between internal error code 502 and upstream returned http_502 on a nginx proxy

We use nginx as a http proxy server.The following configuration: location / { proxy_pass_header Server; proxy_pass $scheme://$http_host$request_uri; } When urls proxied return error code 502 ...
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2answers
10k views

How to add a fallback to my proxy in nginx?

I am trying to build a proxy for my node application through nginx thinking this will give me error pages if the node application failed or is not available on the port. The node app runs on 127.0.0....
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0answers
2k views

Docker: Nginx and hhvm socket configuration returns 502 Bad Gateway

I am trying to run nginx and hhvm with docker-compose and socket file configuration but it returns a 502 error. I can access to conf/hhvm/run/ from nginx and hhvm image. In the error.log nginx's file ...
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1answer
2k views

502 Error When Trying to Post/Update in Wordpress After HHVM Installation

I'm hoping someone can lead me in the right direction of how to track down this problem. I recently had HHVM installed on my server with PHP as a fallback. Since then I've been having issues in WP ...
2
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1answer
1k views

Apache RewriteRule 502 Error on dev server, works on live

I'm on Apache 2.2.15. My vhost.conf contains a RewriteRule to handle article URLs; # handling for neat article titles RewriteRule ^/news/[0-9]{4}/[A-za-z]{3}/([0-9a-zA-Z-]*)/([0-9]{4})([0-9]{6})/?$ "/...
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2answers
368 views

Upgrade 2 Ghost blogs on same server, 1 quits immediately when run as a service

I have 2 Ghost blogs on a Digital Ocean server running: Ubuntu 14.04.3 LTS Nginx 1.4.6 (Ubuntu) Node v0.12.7 I used the instructions provided by Digital Ocean to set up the blogs, and they have ...
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0answers
1k views

Random 502 errors only with phpMyAdmin throgh nginx/php-fpm, with php segfault

I'm using nginx and php-fpm on many servers. Some have php 5.4 with APC and others 5.5 or 5.6 with opcache. PhpMyAdmin on servers on 5.4 work without any problems. PhpMyAdmin on servers on 5.5 or 5.6 ...
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2answers
1k views

Nginx throws 502 intermittently on every page when using fastcgi_finish_request()

I recently inherited administration over 2 Nginx boxes in AWS and am very unfamiliar with how PHP-FPM works (and doens't work). I recently integrated Keen.IO for backend user logging, using: ...
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1answer
3k views

proxy giving error 502 when uploading files to tomcat backend

So, I have an apache 2.2.16 (64 bit) installed on a Debian Server. I have configured a proxy, for a specific url to map to my backend Tomcat 7 server. Everything works fine for all of the GET/POST ...
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1answer
2k views

502 errors on random (not all) pages

A few weeks ago I noticed in the Google Webmaster tools that a few of my URL's were returning 502's. One such URL is http://www.sau.com.au/forums/topic/437438-around-the-bay-wrap-up/ This URL ...
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1answer
669 views

PHP 502 Server Error: Problems with code or server?

Not sure if this is the right forum, but I'm hoping someone can help me. We had a web app running on our web server for a while now. Suddenly it stopped working and displays a 502 error - Web server ...
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2answers
513 views

Where do these “single-dot” smtp connection failures come from?

I'm running a mailserver based on postfix. There are a lot of connection failures like this: Transcript of session follows. Out: 220 hostname.tld ESMTP Postfix In: . Out: 502 5.5.2 Error: command ...
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2answers
3k views

UWSGI Bad Gateway - Connection refused while connecting to upstream

Trying to get a basic Django app running on nginx using UWSGI. I keep getting a 502 error with the error in the subject line. I am doing all of this as root, which I know is bad practice, but I am ...
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1answer
7k views

502 bad gateway nginx. uwsgi, flask

Ok so I developed a web app in python and it worked with the internal server: if __name__ == '__main__': app.app.run(debug = True) with no issue at all. I am now trying to start up a nginx ...
3
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1answer
6k views

(111: Connection refused) while connecting to upstream - Opsworks Rails 4

I deployed a rails 4 application in OpsWorks (Ubuntu 14.04, nginx and unicorn), when I open the homepage I'm getting a 502 Bad Gateway error. In nginx/error.log I can see this error: 2015/01/25 06:19:...