To know the issue, you need to check the log files and then you will get some idea and find the right solution. It is very important that you know what services you are using and whether it is configured correctly or not. These 3 reasons will help you understand the reason for the 502 Bad Gateway Error. You should restart the other services that you are using along with the NGINX with some service or Apps and check the error logs. In this case, restart PHP5-FPM and check the error logs. There might be a possibility that PHP5-FPM will get overloaded with too many requests, maybe because of PPC running on that website. While using NGINX with PHP5-FPM, if it is not well configured, the website will throw 502 Bad Gateway Error. In most of the cases, it can be resolved by just restarting the Apache web server. While using NGINX as a proxy for Apache, there might be a possibility that Apache is not well configured and this might result in 502 Bad Gateway Error. Let’s dive deep into the reasons to understand the 502 Bad Gateway Nginx Error. In this case, the gateway can be a service or application that is working and receiving requests from Nginx web server. Where gateway is an access point, a bridge communicates between the two servers.
Such type of error is referred to as an HTTP Status Code Error. Nginx running with other services as a gateway.Nginx running as a proxy for Apache web server.You will find 502 Bad Gateway Error while.
Here is the list of most common 502 error messages: You might see the following error messages due to the customised 502 Bad Gateway error message. There are a few reasons why you will find this error message. While sometimes, your website runs well and returns the same error after a couple of hours. It is really frustrating to keep seeing this error again and again. While web browsing, you must have noticed websites returning 502 Bad gateway NGINX error.