what is error 502 bad gateway

[ArticleAuthor: Zhang banquet this article version: V1.0 last modified: 2008.07.30 reprint please indicate the original article link: http://blog.s135.com/read.php/361/] Yesterday, a friend asked me how to solve the "502 Bad Gateway" error when he changed the Web server to nginx 0.6.31 + PhP 4.4.7 (FastCGI. I will fo

The recent 502 error of Nginx Gap, how to implement automatic restart PHP-FPM? Think of the solution 1. Execute shell script with crontab timer, reboot after error (timed execution every 5 seconds)2. Using the Nohup,shell script background execution Sample Script #!/bin/bash while : do URL="http://192.168.1.30" RESULT=`curl -m 10 -I -s $URL | gr

The 502 error is the one that all nginx running PHP don't want to see. Nginx 502 has many reasons, but most of the reasons can be attributed to the lack of resources, that is, the back-end php-fpm processing problems, nginx the correct client request to the backend PHP-FPM p

Cause1. PHP FastCGI Process count is insufficientWhen the number of concurrent accesses to the website is huge, the number of php fastcgi processes is not guaranteed, because cgi works in a single thread and multiple processes, that is to say, cgi needs to process a page before continuing the next page. If the number o

. conf:Fastcgi_connect_timeout 300 s;Fastcgi_send_timeout 300 s;Fastcgi_read_timeout 300 s;Fastcgi_buffer_size 128 K;Fastcgi_buffers 8 128 K; #8 128Fastcgi_busy_buffers_size 256 K;Fastcgi_temp_file_write_size 256 K;Fastcgi_intercept_errors on;The most important setting here is the first three, that isFastcgi_connect_timeout 300 s;Fastcgi_send_timeout 300 s;Fastcgi_read_timeout 300 s;This specifies the connection, send, and read time for the PHP-CGI, 3

probably a problem--one of those sites that has a device failure or overload. Contact the administrator of the Web site. About 502 Bad Getway the solution to the error of the popular explanation 1. What is 502

possible to reduce the collection and database operations, speed up its response, sometimes because their own PHP program response too slow caused.3: The current LNMP one-click installation package more problem is 502 bad Gateway, most of the time because the script before the installation of some LIB package may not

LNMP a key installation package for the environment but I found my WordPress backstage, some of the page 502 Bad Gateway error problem, let's look at the solution. My PHP version is 5.2.17. MySQL version is 5.1.60 WordPress ver

128Fastcgi_busy_buffers_size 256k;Fastcgi_temp_file_write_size 256k;Fastcgi_intercept_errors on;The main setting here is the first three, which isFastcgi_connect_timeout 300s;Fastcgi_send_timeout 300s;Fastcgi_read_timeout 300s;This set the php-cgi connection, send and read time, 300 seconds enough to use, so my server rarely appear 504 Gateway time-out this error