How to Solve 502 Bad Gateway Issues?
A 502 Bad Gateway indicates the edge server (server acting as a proxy) was unable to acquire a valid or any reaction from the source server (also called upstream server). This can happen for a couple of reasons, which we'll talk in the section below. If among KeyCDN's border servers get a 502 Bad Gateway response from your origin server, KeyCDN will return a 500 Origin Not Reachable page. To get a better grasp about how KeyCDN handles specific error codes, have a look at our CDN Error Codes page. Gateway computer customer support phone number
What Are the Factors for 502 Bad Gateway Replies?
There are 3 main culprits that cause 502 Bad Gateway answers. These include:
Domain name not resolvable: The domain name isn't resolving to the correct IP or it doesn't resolve to any IP. It's very important to note that DNS changes could take some time until they are global fully propagated and active. This can be dependant on the TTL, or time to live, defined per document.
Origin server down: The machine isn't reachable, either because it's down or there is no connectivity to the host given.
Firewall blocks ask: A firewall blocks the communication between the edge servers and the source server. This may also be brought on by security plugins of your CMS. Some DDOS protection and mitigation systems may are too overreactive and begin blocking requests from our content delivery servers. Gateway computer customer support phone number
The Way You Might See a 502 Bad Gateway Error
Based on your web server, you might observe another 502 error.
All these mean the same thing, it's simply their naming conventions that differ. Listed below are a few examples of what you may see:
You're able to see in greater detail what the error especially entails by heading to your web server's error log file. All error / analytical information is saved in this file which makes it a valuable source to check when you want additional information about a particular error. You may locate this file in Apache. Gateway computer customer support phone number
The Way to Solve 502 Errors -- for Web Programmers
As a web developer or owner of the site, there are a couple reasons why you may be undergoing a 502 Bad Gateway error on your source server. For this reason, you may have to try various methods to resolve the matter. Reference the list of suggestions below:
Check if your FQDN (fully qualified domain name) is resolving properly using our DNS evaluation tool.
Verify if your server is reachable by utilizing a ping test or trace-route.
Check your firewall logs if you're seeing uncommon drops.
If you're a CloudFlare user, consider disabling it as once you've reached a certain limitation CloudFlare will return a 502 Bad Gateway error to your customers. Gateway computer customer support phone number
How to Solve 502 Errors -- for Traffic
If you are a site visitor and experience a 502 Bad Gateway error then there is also a couple of things you can attempt to solve it. Even Though the Principal problem will always be the responsibility of the web programmer, visitors can test the following:
Play a hard-refresh in your browser. Your browser may be holding to specific files that were saved once you visited the website with a 502 error.
Restart your computer/networking equipment
Change your DNS servers. If you have never changed them previously you likely still have the default servers delegated to you by your ISP, consider using open DNS servers such as Google's Public DNS.Gateway computer customer support phone number
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