Define 502 Error
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the UK edition switch to the US edition switch to the AU edition International switch to the UK edition switch to the US edition switch to the Australia 502 error nginx edition The Guardian home › tech home UK world sport football opinion culture 502 proxy error business lifestyle fashion environment tech selected travel browse all sections close Computing Ask Jack 502 Bad Gateway error: what 502 error fix to do when you can't get through to a website Viv is trying to reach Freecycle but is getting a 502 Bad Gateway error. If you can't get through to a website, 502 error google drive here are five things you can try.... This type of error comes from the server, and usually has nothing to do with your PC Jack Schofield Thursday 1 August 2013 16.03 BST Last modified on Thursday 1 August 2013 16.39 BST Share on Facebook Share on Twitter Share via Email Share on LinkedIn Share on Google+ Share on WhatsApp Share on Messenger I keep getting an error
502 Error Cloudflare
message, 502 Bad Gateway nginx/0.7.67, when I try to access the Freecycle site. I have rebooted my PC and used 'system restore' several times, but haven't been able to clear it. Do you know how to sort this out? Viv The 'Bad Gateway' error is coming from the server, and usually has nothing to do with your PC. It may just be that the site is overloaded. Often, simply refreshing or reloading the page (Ctrl-F5) will work, but sometimes the problem can persist for days. If so, you could log the time(s) and browser version and submit an error report to the webmaster, because 502 errors can be caused by bugs in the associated PHP programming. In this case, email the admin team at myfreecycleadmin@freecycle.org. If it's an intermittent fault, the simplest option is to wait for 10 minutes and then try again. There are a few things that you can do to try to get through to a site when you get a 502 Bad Gateway error. It's hard to know whether they actually work. It might be that doing them is simply introducing a delay and the site wo
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 down (no response to the gateway/proxy), but rather
Gmail 502 Error
that the upstream server and the gateway/proxy do not agree on the protocol for exchanging pinterest 502 error data. Given that Internet protocols are quite clear, it often means that one or both machines have been incorrectly or incompletely programmed. youtube 502 error Fixing 502 errors - general This problem is due to poor IP communication between back-end computers, possibly including the Web server at the site you are trying to visit. Before analysing this problem, you should clear your browser https://www.theguardian.com/technology/askjack/2013/aug/01/502-bad-gateway-error 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 your ISP can help you. In the second case, you need to fix whatever it is that is preventing you reaching the Internet. http://www.checkupdown.com/status/E502.html 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 their control. 502 errors in the HTTP cycle Any client (e.g. your Web browser or our CheckUpDown robot) goes through the following cycle when it communicates with the Web server: Obtain an IP address from the IP name of the site (the site URL without the
a proxy server. The problem is typically caused for one of two reasons: 1 – The Internet Security and Acceleration (ISA) is configured to throw a proxy error to help http://www.tech-faq.com/502-proxy-error.html guard against external or internally-based Internet threats, and 2- The client or server computers are misconfigured or using outdated software. What is a 502 Proxy Error? A 502 proxy error is typically thrown in the HTTP cycle. https://www.scalescale.com/tips/nginx/502-bad-gateway-error-using-nginx/ When the error occurs, a server (does not have to be a Web server) is filling a role similar to a proxy or a gateway server. When a client computer sends an HTTP request (typically a 502 error web browser, but can be any software application that is capable of making an HTTP request), it will pass through the server in order to obtain access to the desired URL. The proxy or gateway subsequently receives a 502 error, or invalid response, from the server located “upstream” in the attempt to fulfill the client request. The majority of the time the error is thrown, the upstream server is functioning appropriately. The define 502 error proxy or gateway and upstream servers just cannot agree on the appropriate protocol for exchanging the information requested in the original client HTTP request. In many of these cases, either the proxy or upstream server are not configured correctly or are running incompatible software. Why Does a 502 Proxy Error Get Thrown? During a typical web browsing session, the following is an example of the classic HTTP cycle when a client computer and web server are communicating: Client Computer: The IP address of the desired website will be obtained from the URL of the site from the DNS server. Client Computer: The computer obtains an IP socket connection to the desired IP address and then sends an HTTP data stream through the IP address. Web Server: HTTP data is sent back to the client computer in response to the original HTTP request. The HTTP response will include status codes and other useful information for the client computer. Client Computer: If there is an error in the client’s request or server’s ability to respond, there will be an HTTP error code of 502 included in the server’s response (502 Proxy Error). How to Fix 502 Proxy Errors (Client Side) One of the most frustrating things for the average computer user is determining where the problem resides w
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 { ... fastcgi_buffers 8 16k; fastcgi_buffer_size 32k; fastcgi_connect_timeout 300; fastcgi_send_timeout 300; fastcgi_read_timeou