What to do if there is no php cgi process

The solution to the problem that the php cgi process does not exist: 1. Open the corresponding configuration file; 2. Keep the listen in php-fpm.conf consistent with the conf listen in nginx.conf or vhost.

The operating environment of this article: linux5.9.8 system, PHP5.6, Dell G3 computer.

Is there any php cgi process? PHP starts php-fpm successfully, but the php-cgi process cannot be found. 502 getaway?

Generally, after you have just installed the lnmp environment and changed the fastcgi_pass unix:/tmp/php-cgi.sock item in nginx to fastcgi_pass 127.0.0.1:9000, you will get a 502 error when accessing the web page. Page, the php-cgi process cannot be found using netstat -tlunp.

Solution:

1. LNMP uses unix sockets by default, and the fastcgi_pass parameter in the virtual host configuration file is unix:/tmp/php-cgi.sock;

Need to ensure that the settings in /usr/local/php/etc/php-fpm.conf

PHP 5.3 and above are listen = /tmp/php-cgi.sock

At the same time, fastcgi_pass unix:/tmp/php-cgi.sock; in the virtual host configuration below /usr/local/nginx/conf/nginx.conf and /usr/local/nginx/conf/vhost/ is inconsistent. Must be 502.

2. Sometimes 502 may appear in unix socket mode

You can try changing to tcp/ip

PHP 5.3 and above listen = /tmp/ Replace php-cgi.sock with listen = 127.0.0.1:9000, replace fastcgi_pass unix:/tmp/php-cgi.sock; in the nginx configuration file and virtual host configuration file with fastcgi_pass 127.0.0.1:9000; and then try restarting.

Summary:

/usr/local/php/etc/php-fpm.conf listen should be consistent with nginx.conf or conf listen in vhost

To be consistent with nginx configuration

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