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A couple of websites on our DigitalOcean VPS have a great amount of traffic. Due to this traffic, I ran into the error below (edited for readability).
[crit] connect() to unix:/var/run/php5-fpm.socket failed 2 No such file or directory
This was because the amount of concurrent users was starting to get high. Instead of fiddling around too much, I thought it best to simply switch to a TCP/IP fast_param, as it‘s more scalable by default than using a socket.
To do this, we need to edit a couple of files.
PHP5-FPM:
$ sudo nano /etc/php5/fpm/pool.d/www.conf
In this file, find the below line and uncomment it.
;listen = 127.0.0.1:9000
If you have already have listen = unix:/var/run/php5-fpm.socket; in there, or another file in the pool.d folder, comment it out or replace it with the TCP/IP.
Nginx:
Next, we‘ll need to edit the Virtual Host config files, which may be located in /etc/nginx/sites-available. Hopefully, you‘ve used one global file for all of your PHP sites, otherwise you‘ll need to edit multiple files for each site. Look for:
fastcgi_pass unix:/var/run/php5-fpm.sock;
Comment it out or replace it with:
fastcgi_pass 127.0.0.1:9000;
Now we can get things reloaded.
$ sudo service nginx reload
$ sudo service php5-fpm reload
==https://www.obstance.com/articles/linux/switching-from-using-a-socket-to-tcpip-in-php-fpm-r32/
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原文地址：http://www.cnblogs.com/qinqiu/p/5596012.html
