Nginx + PHP File Upload issue

Question

I am experiencing the following issue when uploading a file via phpMyAdmin, MODx or Wordpress. In the PHP application itself I am receiving a success message but the file is not uploaded. The nginx error.log prints the following messages:

[warn][..] a client request body is buffered to a temporary file...
FastCGI sent in stderr: "PHP message: PHP Warning:  File upload error - unable to create a temporary file in Unknown on line 0...

I am running CentOS Linux release 7.2.1511 (Core) with Nginx 1.8.0 and PHP 5.4.16. This setup was working before updating from CentOS 7.1 to 7.2.

Here are the steps that I already tried to solve the problem:

sys_get_temp_dir() -> /tmp
/tmp has permissions 1777
PHP is running as user nginx
it is plenty of free disk space available
post_max_size, upload_max_filesize and client_max_body_size are all set to 50m

I am running out of ideas...

Thanks in advance

danday74 · Accepted Answer · 2017-07-12 13:07:18Z

2

Simple Solution:

$ sudo systemctl restart php-fpm nginx

Fixed the problem. I don't know why, but now it is working like a charm.

edited Jul 12, 2017 at 13:07

danday74

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answered Jan 5, 2016 at 13:40

travisbotello

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1 Comment

Rob Mascaro Over a year ago

It's almost certain somebody has deleted the directory that's created in the /tmp area for both these processes nginx and php-fpm to write to. The processes then attempt to write to a non-existent directory. Restarting them recreates the directories and which makes it work again.

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