how to fix error 502 bad gateway

　　First, 502 bad gateway meaning 502 Bad Gateway English translates into 502 types of errors or invalid gateways, where 502 refers to the

Today, my VPs frequently prompts that the nginx 502 Bad Gateway is incorrect. After the VPs is restarted, it becomes annoying. I cannot figure it out. There was no problem when my website reached 1290 of the traffic in the previous two days. Why did 502 Bad

The first reason: Install LNMP a key installation package when PHP did not install successfully and 502 bad Gateway, starting from 0.9 as long as the installation of success or failure will be prompted. Failure to install the general reason is that before the installation of PHP, some LIB packages in the script may not be installed, causing PHP failed to compile

, find a balance point. There's also a lazy approach to max_children, If your PHP is 5.3, then you can set the FPM style to Apache-like, this time the number of children by FPM automatic control. The corresponding configuration parameters are Start_servers: Number of start processes Min_spare_servers: Minimum number of processes Max_spare_servers: Maximum number of processes When the server is more idle, FPM will take the initiative to kill some redundant children, to save resources, when the se

debug, find a balance point. There's also a lazy approach to max_children, If your PHP is 5.3, then you can set the FPM style to Apache-like, at which time the number of children is automatically controlled by FPM. The corresponding configuration parameters are Start_servers: Number of start processes Min_spare_servers: Minimum number of processes Max_spare_servers: Maximum number of processes When the server is idle, FPM will actively kill some extra children to conserve resources, and the ser

LNMP upgrade php5.4.28 or later version error 502 bad Gateway Encounter a very strange problem, with LNMP./upgrade_php.sh upgrade php5.4.27 normal. But upgrade to php5.4.28 error, Access p.php hint: Nginx 502

502 Bad Gateway Causes A server (not necessarily a Web server) is a gateway or proxy to meet customer requirements, such as a Web browser or our Checkupdown robot, to access the requested URL. This server received an invalid response from an upstream server to fulfill its requirements. Meaning This usually does not

Php-cgi supported by php-fpmModify the php-fpm process count in/usr/local/php/etc/php-fpm.conf to find max_children and change the following value to the value you want to set.. The code is as follows:Copy code # Vim/usr/local/php/etc/php-fpm.conf # Max_children indicates the processing process of php-cgi. Setting max_children also needs to be set based on the server performance, increasing the number of processes and occupying memory.It will also increase accordingly. Under normal circumst

Nginx+php-fpm+mysql website, visit Nginx a page, reported 502 Gateway error, generally see this error, can judge is php-fpm problem, not nginx problem. By monitoring the Nginx error log, the following error is found:Upstream sent

The way to resolve 502 Bad Gateway is: 1. Depending on the performance of the server, in the php-fmp.conf to increase the value of Max_children, I currently use 15. (a php-fpm uses about 20M of RAM, if your memory is about 1G,1024/20=50) 2. Use the reload parameter to reload the PHP-FPM periodically. Release the memory used by PHP-FPM, the PHP script execution