Plesk 11.5: Connect to php-fpm.sock failed (13: Permission denied) error

Posted on July 13, 2013

I kept running into this error on Plesk 11.5 while using NGINX and PHP-FPM. This particular check will work on Plesk and non-plesk systems alike. This post isn't a “solution” as much as it is a way to track down the root cause of the error.
[crit] 1605#0: *154 connect() to unix:/var/www/vhosts/system/curvve.com/php-fpm.sock failed (13: Permission denied) while connecting to upstream, client: ... upstream: "fastcgi://unix:/var/www/php-fpm.sock:"

Check if PHP-FPM is running

My output was “php-fpm dead but pid file exists”

service php-fpm status

Restart PHP-FPM

service php-fpm restart

Bingo

My output was as follows:

Starting php-fpm: [12-Jul-2013 22:12:11] ERROR: [pool www.domain.com] cannot get uid for user 'someuser'
[12-Jul-2013 22:12:11] ERROR: FPM initialization failed

From there I just had to track down the domain error within Plesk. When I was done fixing the issue, I restarted PHP-FPM and NGINX and everything was golden.

I hope this helps! As always, feel free to comment if you have any questions.

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