Nginx Report 502 Bad Gateway Error resolution method

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 too big header while reading response headers from upstream

Solve this problem with Google:

In nginx.conf the HTTP segment, add the following configuration:

proxy_buffer_size 128k;

proxy_buffers 32 32k;

proxy_busy_buffers_size 128k;

Restart after the general can be resolved, if it is reported 502, and then in the host configuration of the PHP section to add the following configuration:

fastcgi_buffer_size 128k;fastcgi_buffers 4 256k;fastcgi_busy_buffers_size 256k;


Restart Nginx.

Reference URL: http://henter.me/post/nginx-error-upstream-sent-too-big-header-while-reading-response-header-from-upstream.html
         http://www.nginxtips.com/502-bad-gateway-using-nginx/

Nginx Report 502 Bad Gateway Error resolution method