Nginx+php-fpm 502 504 problem php-fpm nginx 504 java nginx php 50

Recently, 502,504 errors often occur in the self-study IT forum (www.zixue.it)

Environment:

Host: Alibaba Cloud dual-core CPU 2G memory
OS: centos 6.4 64-bit

Idea:

Increase the size and number of cache files when nginx communicates with php-fpm
Static binding of 5 php-fpm processes reduces the cost of starting processes frequently
Use sock files instead of tcp port communication (local machine performance can be improved by about 10%)
Solution:

Adjust the parameters of Nginx and php-fpm as follows

nginx.conf location section

<code>unix:/usr/<span>local</span>/php/<span>var</span>/run/php<span>-fpm</span><span>.</span>sock</code>

fastcgi.conf Modify the content

<code>fastcgi_buffers 32 128k;
fastcgi_buffer_size 128k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;</code>

php-fpm.conf

listen = /usr/local/php/var/ run/php-fpm.sock

Reminder: Don’t forget to add read and write permissions to php-fpm.sock

<code>pm = <span>static</span><span># 静态绑定5个进程</span>
pm.max_children = <span>5</span></code>

Effect:

The forum homepage is about 30 milliseconds faster, and after 2 weeks of clinical observation, it has not happened again. 502,504 error

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The above has introduced the Nginx+php-fpm 502 504 problem, including nginx and 504 content. I hope it will be helpful to friends who are interested in PHP tutorials.