Questions tagged [503-error]

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Error 503 Service temporarily unavailable with home internet connection but works with mobile data

I'm running some apps under docker on Oracle cloud free-tier ARM64 server. I'm using an nginx reverse proxy and wildcard subdomains to access the apps. When I try to access the app at port.meracloud....
0 votes
1 answer
61 views

Why do i see ipv6 addresses on haproxy logs?

We have received complaints that some users cannot access the site during the day. Somehow they see maintanence page. When we examined the haproxy logs, we saw that all 503 error's requests' source ...
0 votes
1 answer
22 views

DNS redirecting to mantainance page during planned mantainance - what happens to google indexing?

We are planning a mantainance that could take down the services for a whole day. I would like therefore to show a mantainance page, explaining the issue and providing additional info/links. During ...
1 vote
0 answers
167 views

IIS randomly returns 200 (instead of 503) when `app_offline.htm` is present

I have a site served using IIS, and when I am performing my periodic maintenance I put an app_offline.htm file at its root (this is necessary to indicate to google and other bots that the site should ...
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1 vote
0 answers
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Error 503 Service Unavailable

We have a debian based reverse proxy server which is under testing for product scanning for a store and all of a sudden it didn't connect and started showing 503 service unavailable. The next day it ...
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1 vote
2 answers
486 views

Varnish + nginx 503 error backend fetch failed

some assistance would be appreciated. My setup: LB -> VARNISH -> NGINX For reasons unknown, I started getting random error 503 on the clients. I've checked the logs on varnish and Nginx... ...
0 votes
1 answer
423 views

nginx uses built-in error page instead of my custom page

My nginx server responds to not-found URLs as intended with my custom 404.html file. I now want it to send my 503.html when I set $maintenance to 1. But instead it sends its familiar built-in 503 ...
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0 answers
36 views

I need to cause a WordPress 503 (plugin related)

I currently work resolving things like this however I’m currently in a place where I need to cause a 503 error on WordPress because of a plugin in order to develop automation tools to quickly resolve ...
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0 votes
1 answer
775 views

HAProxy with same request sometimes responding with NOSRV while backend is up

Im making the same request(POST /user/oauth) to haproxy but sometimes i get 503, sending requests directly to the backend always works here is the logs: local_server~ app/s2 0/0/0/100/100 200 813 - - ...
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0 votes
1 answer
471 views

Varnish 4.1 - How to serve cached copy on backend fetch failed instead of 503

I have a site served by apache+tomcat and a cache served by Varnish 4.1 When apache is down, varnish always returns a 503 error. I would like varnish to return the copy of the pages it has in its ...
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0 votes
2 answers
1k views

GCP External HTTPs Load Balancer - 404 - 503 - SSL Exception (Remote host terminated connection, read handshake, socket closed & upstream connect)

We're load testing a MIG (with 2 instances) hosted behind the HTTPs load balancer using JMeter. Observation 1: We randomly receive 404 error and 503 error, for 404 we see an entry get created within ...
0 votes
1 answer
3k views

Getting 503 with apache proxy_fcgi_module [SOLVED]

I'm using CentOS 9 Stream on a VM, trying to setup my apache server to be able to show php content on the web. The server works fine when its just html, but I'm getting these errors (503 in the ...
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1 vote
1 answer
409 views

IIS WCF 503 Errors - Where to Find Logs of Them

I am trying to figure out where I can find the logs which list HTTP 503 errors that IIS has been returning when servicing requests for a WCF service that it hosts. I have looked in the following ...
0 votes
2 answers
2k views

nginx reverse proxy - proxy_pass leads to 503 service unavailable

i have to following configuration: server { listen: 8080; location / { proxy_pass https://somehost.abc.xyz; proxy_redirect off; proxy_set_header ...
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1 vote
1 answer
1k views

php processes stil running under www-data after configuring php-fpm

Would appreciate any help, I am at my wits end. Objective: Configure php-fpm so I can have multiple websites on the same server that do not have write access to one another, and have php-fpm run as ...
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1 vote
1 answer
411 views

Is it possible to limit the number of concurrent requests to Apache and buffer the excess requests (instead of returning 503)?

I have a website served by Apache 2.4 with PHP-FPM. Some pages take a few seconds to be generated. From time to time, some bot or crawler tries to download lots of these pages at once, PHP processes ...
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1 vote
0 answers
123 views

IIS Sites Randomly Become Inaccessible

Server Config: Windows Edition: Server 2012 R2 Standard (with most recent updates) Processor: Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz (2 processors) System type: 64-bit OS, x64-basd processor In IIS,...
2 votes
0 answers
848 views

Apache with PHP-FPM intercepting errors and not displaying my friendly PHP error page output in dev environment

There is so much static around this it's hard to find an answer that actually applies, so my apologies if there is an answer for this, I just haven't been able to find it. My situation is that I want ...
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1 answer
2k views

haproxy ssl termination works on http BUT fails on https with 503 - on Virtualbox apache2 ubuntu 18.04 backend server

I've just dived into haproxy, and my goal is to setup an ssl terminated loadbalancer with one frontend ubuntu, and (for now) one backend lamp (ubuntu). Both the frontend and backend machines are 18.04 ...
0 votes
1 answer
732 views

K8S HPA custom Stackdriver - 503 The service is currently unavailable - avoids scaling

We have an horizontal pod auto-scaler (HPA) installed on gke cluster, most of the time the auto-scaler works perfectly fine. but from time to time (mostly on our customer rush hours) the auto scaler ...
0 votes
1 answer
107 views

503 service unavailable while trying to login through wordpress

I have no access to my site on Wordpress from any laptop browser I have. But it's possible to log in from other computers and I can access it from my phone. In the laptop browser, I type aomy.nl/wp-...
0 votes
1 answer
457 views

How do I need to configure selinux in order to have 'setenforce 1' and still be able to run my webservices?

my problem is as follows: I installed gitlab on a cloudserver of mine running CentOS7, and I configured it to use apache2/httpd instead of nginx as webserver. For doing so I followed this answer on ...
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1 vote
0 answers
250 views

Proxy (transparent) that retries on 503 errors

In a devops setting, a docker container needs to have its https traffic filtered through a retrying proxy/cache, as the requests sometimes fail due to 503 errors. It seems like squid can do this, but ...
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0 votes
2 answers
2k views

Nginx PM2 NodeJS reverse-proxy with SSL gives HTTP 504

Once upon a good time, I had a good config for three NodeJs, socket.io API running on the same Ubuntu 16.4 LTS VPS server with PM2 for process managing and Nginx for reverse proxy to three different ...
0 votes
1 answer
2k views

Apache: 503 Service Unavailable sometimes without any server load

I have an apache server v2. Sometimes I get 503 error without any server load at all this error appears randomly not at any specific time or when using specific services. How to find the cause or ...
0 votes
0 answers
1k views

AWS ELB and IIS 10: 503 Service Unavailable

I'm running IIS 10 on a Windows Server 2016 EC2 instance that sits behind an AWS ELB. I've loaded a custom (signed) SSL Certificate on the ELB. When I attempt to load sites without https, they're ...
1 vote
0 answers
648 views

HAProxy returns 503 (80 & 443 frontends + redirections managed by virtualhosts)

I've already looked for many posts, but no one solved my problem... Let me explain the context : 3 containers on a dedicated server : [10.173.223.10] haproxy [10.173.223.11] Container_A (contains ...
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1 vote
2 answers
5k views

HAProxy served 503s and I don't know why

Yesterday, for around 10 minutes, my haproxy served a lot of 503 pages (directly from errorfile 503 /etc/haproxy/errors/503.http) and I don't know why. I have no health checks to my backends, so for ...
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1 vote
1 answer
4k views

NGINX: Request Limit timeout behavior for queries in the queue (burst)

Currently, we have a queue size of 3000 requests. location /api/v2 { limit_req zone=bursted burst=3000; include /etc/nginx/proxy.conf; } The rate limit is 10 requests per second. ...
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0 answers
2k views

503 error for long HTTP connections to apache 2.4 on centos 7

I'm running Apache 2.4 (mpm event mode + php-fpm) on CentOS 7. For HTTP requests which take longer than 60 seconds (whether it's a dynamic PHP page or a static page), exactly after one minute I ...
0 votes
1 answer
1k views

Tracking cause of 503 errors for certain IP addresses

An outside IP address is getting access blocked (though a few rare requests do get through from the IP address) with 503 errors to websites on my Apache2 webserver on a Debian machine. I have ...
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3 votes
1 answer
2k views

show customize 503 message when app pool is stopped

I have read a lot about it even here: https://stackoverflow.com/questions/2271887/custom-error-page-for-http-error-503 Nothing worked for me. When the application pool is stopped, it will always show ...
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0 votes
0 answers
474 views

Why is Wordpress/Apache returning a 503 error?

I have two separate WordPress nodes running with an Haproxy load balancer out front. After I got my infrastructure set up, tested, and working, a few hours later the whole infrastructure is down and ...
0 votes
3 answers
1k views

Apache collapses after getting overloaded

I have an apache http server. Recently, my server became overloaded, resulting that the service was no longer answering any http requests(the last answer was 503). Even when the server was no longer ...
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3 votes
4 answers
9k views

503 error on apache virtual hosts

I created a virtual host with the following code on an ubuntu apache server cd /var/www/ sudo mkdir fd-pro sudo mkdir /var/www/fd-pro/ch-api sudo mkdir /var/www/fd-pro/ch-api/public_html sudo chown -...
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0 answers
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Reason for Apache 503 Service Unavailable

There are several possibilities why apache returns 503 - Service Unavailable: MaxConnPerIP MaxClients ... The application is kallithea (a source code management system for git). I could not find ...
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2 votes
2 answers
3k views

IIS 503 Service unavailable when using SSL

I've setup an https binding for my site in IIS but I'm getting a 503 Service Unavailable error whenever I try to hit the endpoint. What's weird is I can access the site without issue over port 80. ...
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0 votes
1 answer
1k views

Apache Load Balance and 503 Response

i have such a enviroment: We have one our own Web server, which comunicates with other software components (creating pdf documents) over http protocol. Such a software component is called a worker. ...
3 votes
1 answer
5k views

How to debug error 503 without a trace?

I am working on a large web application with a C# backend. In the development setup, the application is served via an IIS 8.5 instance on my machine. Since recently, I cannot log in any more. I still ...
0 votes
1 answer
2k views

Apache archiva returns http error 503

I am using apache Archiva v. 2.2.0 under Windows Server 2012 R2. With Java version 1.8.0_60 everything worked fine. After updating to 1.8.0_101_b13 I am getting an error message when going to archiva ...
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5 votes
1 answer
10k views

haproxy 1.5 specific source IP address show <NOSRV> 503 SC in haproxy log

I have an unusual problem (as everyone does on this site). I have HAProxy listening on port 80 and 443. I am offloading SSL encryption to HAproxy and passing all traffic to my web servers on port 80. ...
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4 votes
1 answer
24k views

Ubuntu Apache Server 503 Error: disabled connection for (localhost)

in a bit of a bind here. I'm trying to move a website (www.monkhouselaw.com) from one hosting company to my Digital Ocean VPS. I've changed the DNS settings to: * -> 107.170.29.18 www -> 107....
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0 votes
1 answer
751 views

OpenShift Free Tier: 503 Service Unavailable

I've been working on my Ghost theme for the last few hours, and suddenly this error. Attached is a copy of my HAProxy status output. I've restarted both NodeJS and HAProxy. Neither restart fixed the ...
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2 votes
3 answers
137 views

How do I set up a toggle for an Apache RewriteRule?

I have the following Apache config, which displays a 503 Service Unavailable error to all visitors except for my IP address: ErrorDocument 503 /503.html RewriteEngine On RewriteCond %{REMOTE_ADDR} !^...
0 votes
1 answer
1k views

internal error server point to working server using load balancer or nginx

Lets say that I have 3 physical servers with different IPs and 1 load balancer which manages the traffic between those 3 servers. We tested to stop the service of nginx in the 2 servers and the load ...
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-1 votes
1 answer
5k views

503 service unavailable. Apache crashes once in 7-10 days

I use Apache server on Ubuntu 14.04. In order redirect all requests from mypage.com to mypage.com:8080/myapp I use mod_proxy. My 000-default.conf looks as follows: <VirtualHost *:80> # The ...
0 votes
2 answers
1k views

How can I deploy a 503 maintenance page when upgrading a Digital Ocean droplet?

Usually when I perform maintenance that requires briefly taking my site down, I put up a 503 page using something similar to How can I make Nginx return HTTP 503 when my proxied app server is down?. ...
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1 vote
0 answers
945 views

503 error when trying to login joomla 3.3.1

I'm facing a strange issue on joomla and would need help to solve it : The frontoffice side is working fine but when trying to log in backoffice, I get a HTTP 503 Error : [Wed Jul 29 17:41:02....
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1 vote
0 answers
2k views

How to fix/troubleshoot AkamaiGHost TCP_Miss and 500 Errors

I have a java application running on a server in South America at the moment, and using Akamai's CDN. When I check the errors, i sometimes get the error: "HTTP/1.1 503 Service Unavailable" and "500 ...
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6 votes
6 answers
37k views

Exchange 2013 ECP/OWA/Outlook all failing - 503 Service Unavailable

My exchange server is really suffering at the moment. I do not know what has happened but when I connect via https (ECP/OWA) or via outlook (with in the network) I get 503 errors on ECP/OWA and ...
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