Http Error Code 502 Bad Gateway
Contents |
This server received an invalid response from an upstream server it accessed to fulfil the request. This usually does not mean that the upstream server is
502 Bad Gateway Nginx
down (no response to the gateway/proxy), but rather that the upstream server and 502 bad gateway fix the gateway/proxy do not agree on the protocol for exchanging data. Given that Internet protocols are quite clear, it often means 504 bad gateway that one or both machines have been incorrectly or incompletely programmed. Fixing 502 errors - general This problem is due to poor IP communication between back-end computers, possibly including the Web server at the
502 Bad Gateway Nginx Means
site you are trying to visit. Before analysing this problem, you should clear your browser cache completely. If you are surfing the Web and see this problem for all Web sites you try to visit, then either 1) your ISP has a major equipment failure/overload or 2) there is something wrong with your internal Internet connection e.g. your firewall is not functioning correctly. In the first case, only
502 Bad Gateway Nginx/1.4.6 (ubuntu)
your ISP can help you. In the second case, you need to fix whatever it is that is preventing you reaching the Internet. If you get this problem for only some of the Web sites you try to visit then it is likely to be a problem at those sites i.e. one of their pieces of equipment is failing/overloaded. Contact the people at those sites. Fixing 502 errors - CheckUpDown Our service monitors your site for HTTP errors like 502. Use of proxies and caching is increasing on the Web. Our CheckUpDown robot will always try to "drill through" to the real computer that actually hosts the Web site, but we do not have complete control over where our HTTP request actually ends up. If only one link in the chain of computers dealing with our HTTP request is broken, then an error such as 502 can easily occur. Please contact us (email preferred) whenever you encounter 502 errors - there is nothing you can do to sort them out. We then have to liaise with your ISP and the vendor of the Web server software so that they can review the flow of IP data traffic between various computers under t
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 502 bad gateway php Delete a Pull Zone Purge CDN Cache Pull Zone Settings CNAMES
502 Bad Gateway Wordpress
Create a Zonealias Delete a Zonealias Zone Security How to setup Let's Encrypt TLS How to setup 502 error pokemon go Custom SSL How to order a SSL certificate Secure Token Create a Zonereferrer (Hotlink Protection) Delete a Zonereferrer Debugging CDN Troubleshooting Guide Technical Questions CDN Error Codes KeyCDN http://www.checkupdown.com/status/E502.html 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 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 https://www.keycdn.com/support/502-bad-gateway/ 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 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 d
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more http://stackoverflow.com/questions/5011632/502-http-status-code about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up 502 HTTP Status Code up vote 26 down vote favorite 1 According to the RFC: 10.5.3 502 Bad Gateway The server, while acting as a gateway or bad gateway proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request. Can invalid response also mean no response at all (e.g. connection refused)? http client status share|improve this question asked Feb 16 '11 at 1:35 primroot 6351615 add a comment| 1 Answer 1 active oldest votes up vote 24 down vote accepted Yes. Empty or incomplete headers or response body typically caused by broken connections or server side crash can cause 502 bad gateway 502 errors if accessed via a gateway or proxy. For more information about the network errors https://en.wikipedia.org/wiki/List_of_HTTP_status_codes share|improve this answer edited Mar 28 at 13:00 Shalu T D 332114 answered Feb 16 '11 at 1:41 blinkingled 30123 Is there a fix for this? My apache server is not crashing... –Arif Jul 29 '15 at 7:35 @Arif Get a more stable connection by selecting a less busy WiFi channel or plugging in a shielded network cable until it locks into place with clean connectors. –Cees Timmerman Jan 7 at 15:18 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged http client status or ask your own question. asked 5 years ago viewed 40543 times active 6 months ago Blog Stack Overflow Podcast #91 - Can You Stump Nick Craver? Linked 0 Overcome 502 Error for Web App with Long Running Function 0 In HTTP 502, what is meant by an invalid response? Related 667HTTP status code for update and delete?459REST HTTP status codes for failed validation or invalid duplica