How To Fix Internal Error 502
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502 Bad Gateway Nginx
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Please Explain This 502 Bad Gateway Error
THORDOG Internet & Network Error Messages Basics by Tim Fisher Updated October 02, 2016 The 502 Bad Gateway error is an HTTP status code that means that one server received an invalid
502 Bad Gateway Php
response from another server.The Bad Gateway error can be customized by each website. While fairly uncommon, different web servers do describe this error differently. Here are some common ways you might see it.How the 502 Error Appears"502 Bad Gateway""502 Service Temporarily Overloaded""Error 502""Temporary Error (502)" "502 Proxy Error""502 Server Error: The server encountered a temporary error and could not complete your request""HTTP 502""502. That's an 504 bad gateway error""Bad Gateway: The proxy server received an invalid response from an upstream server""HTTP Error 502 - Bad Gateway"The 502 Bad Gateway error displays inside the Internet browser window, just as web pages do.Twitter's famous "fail whale" error that says Twitter is over capacity is actually a 502 Bad Gateway error (even though a 503 Error would make more sense).A Bad Gateway error received in Windows Update generates a 0x80244021 error code or the message WU_E_PT_HTTP_STATUS_BAD_GATEWAY.When Google services, like Google Search or Gmail, are experiencing a 502 Bad Gateway, they often show Server Error, or sometimes just 502, on the screen.502 Bad Gateway errors are completely independent of your particular setup, meaning that you could see one in any browser, on any operating system, and on any device. Cause of 502 Bad Gateway ErrorsOften, Bad Gateway errors are caused by issues between servers online that you have no control over. However, sometimes there is no real issue but your browser thinks there is one thanks to an issue with your browser, a problem with your home networking equipment, or some other in-your-control reason. Note: Microsoft IIS web servers often give more information about the cau
Zone Create a Push Zone Upload Data to a Push Zone Delete a Push Zone Push Zone Settings Push Zone Subusers Pull Zone Create a Pull Zone Delete a Pull Zone Purge CDN Cache Pull Zone Settings CNAMES Create a Zonealias 502 http Delete a Zonealias Zone Security How to setup Let's Encrypt TLS How to setup Custom 502 proxy error SSL How to order a SSL certificate Secure Token Create a Zonereferrer (Hotlink Protection) Delete a Zonereferrer Debugging CDN Troubleshooting Guide 502 bad gateway iphone Technical Questions CDN Error Codes KeyCDN Log Format KeyCDN Log Forwarding Configure your own Syslog Server Getting Started General Account Management Integration Guides CMS Integration Guides Framework Integration Guides Custom CDN Integration CDN How To's Tutorials http://pcsupport.about.com/od/findbyerrormessage/a/502error.htm Zone Configuration General Settings Push Zone Create a Push Zone Upload Data to a Push Zone Delete a Push Zone Push Zone Settings Push Zone Subusers Pull Zone Create a Pull Zone Delete a Pull Zone Purge CDN Cache Pull Zone Settings CNAMES Create a Zonealias Delete a Zonealias Zone Security How to setup Let's Encrypt TLS How to setup Custom SSL How to order a SSL certificate Secure Token Create https://www.keycdn.com/support/502-bad-gateway/ a Zonereferrer (Hotlink Protection) Delete a Zonereferrer Debugging CDN Troubleshooting Guide Technical Questions CDN Error Codes KeyCDN Log Format KeyCDN Log Forwarding Configure your own Syslog Server Knowledge Base Support/Debugging How to solve 502 Bad Gateway Issues? Updated: July 20, 2016 Comments: 1 What does 502 Bad Gateway mean? A 502 Bad Gateway indicates that the edge server (server acting as a proxy) was not able to get a valid or any response from the origin server (also called upstream server). KeyCDN returns a 500 Origin Not Reachable if a 502 Bad Gateway occurred. What does 502 Bad Gateway mean? What are the reasons for 502 Bad Gateway responses? Domain name not resolvable: The domain name is not resolving to the correct IP or it does not resolve to any IP. It is important to note that DNS changes could take same time until they are global fully propagated and active. This is very dependant on the DNS TTL defined per record. Origin server down: The server is not reachable, either because it is down or there is no connectivity to the server given. Firewall blocks request: A firewall blocks the communication between the edge servers and the origin server. This can also be caused by security plugins of your CMS. Some DDOS
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site http://askubuntu.com/questions/424138/how-to-solve-502-internal-error-server-connection-terminated-error Help Center Detailed answers to any questions you might https://www.scalescale.com/tips/nginx/502-bad-gateway-error-using-nginx/ have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question bad gateway _ Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to 502 bad gateway solve “502 internal error - server connection terminated” error? up vote 1 down vote favorite When I try to install VirtualBox through Ubuntu Software Center it fails with the following errors: Failed to fetch http://au.archive.ubuntu.com/ubuntu/pool/universe/g/gsoap/libgsoap3_2.8.12-1_amd64.deb 502 internal error - server connection terminated [IP: 202.158.214.106 80] Failed to fetch http://au.archive.ubuntu.com/ubuntu/pool/main/libs/libsdl1.2/libsdl1.2debian_1.2.15-5ubuntu2_amd64.deb 502 internal error - server connection terminated [IP: 202.158.214.106 80] Failed to fetch http://au.archive.ubuntu.com/ubuntu/pool/multiverse/v/virtualbox/virtualbox_4.2.16-dfsg-3_amd64.deb 502 internal error - server connection terminated [IP: 202.158.214.106 80] Failed to fetch http://au.archive.ubuntu.com/ubuntu/pool/multiverse/v/virtualbox/virtualbox-dkms_4.2.16-dfsg-3_all.deb 502 internal error - server connection terminated [IP: 202.158.214.106 80] Failed to fetch http://au.archive.ubuntu.com/ubuntu/pool/multiverse/v/virtualbox/virtualbox-qt_4.2.16-dfsg-3_amd64.deb 502 internal error - server connection terminated [IP: 202.158.214.106 80] Failed to fetch http://au.archive.ubuntu.com/ubuntu/pool/main/f/fakeroot/fakeroot_1.20-1_amd64.deb 502 internal error - server connection terminated [IP: 202.158.214.106 80] So, I download the deb for 13.10 from here, https://www.virtualbox.org/wiki/Linux_Downloads, and drag and drop it on the Software Center icon. Same result. Why would that be? H
Share Tweet Share Share Vote Many times we can browse the web and find a 502 bad gateway error at Nginx. There are a few reasons why you will find this message in your webserver log, and here we will teach you how to fix it.How you might see the 502 Bad Gateway errorDifferent websites may customize the 502 bad gateway error message. Here are the most common 502 error messages:“502 Bad Gateway”“502 Bad Gateway NGINX”“502 Service Temporarily Overloaded”“502 Proxy Error”“Error 502”“HTTP Error 502 – Bad Gateway”“HTTP 502”When you will find 502 Bad Gateway errorNginx running as proxy for Apache web server.Nginx running with PHP-FPM daemon.Nginx running with other services as gateway.Bad buffering/timeout configuration.Before getting deep into all of this options, you must understand what does the 502 Bad Gateway error message mean. So, the error is an HTTP Status Code error and it's happening at the gateway. What the hell is a gateway? In simple words, a gateway, is like an access point, a bridge that communicate one service with another, in this case the gateway can be a service/application that is working and receiving requests from Nginx web server.Now, let's explore each one of this reasons to understand the 502 Bad Gateway error messageNginx as Proxy for Apache: in this case, the gateway is Apache. When you use Nginx as proxy for Apache, if apache dies or it's not well configured, it can cause this 502 Bad Gateway error. How to fix it? Most of the times, restarting apache web server will get rid of this, but you must check the log files to know why exactly this was caused.Nginx with PHP-FPM: same as Apache example, let's imagine your php daemon stop working, or get's overloaded by requests, it will not work properly and the all the php requests from nginx would not be served, so, a 502 Bad Gateway error will appear. How to fix it? Restart php-fpm daemon and check the logs.Nginx with other services/apps: try restarting the other service behind nginx and explore the logs to find the reason why it happened.Other quick solutions for 502 Bad Gateway error:1) Increase buffer and timeouts inside http block:http { ...