PHP Warning: File upload error - unable to create a temporary file in Unknown
This is a problem that keeps recurring.
We have servers with PHP FPM and for some strange reason this problem keep happening:
Got error 'PHP message: PHP Notice: Unknown: file created in the system's temporary directory in Unknown on line 0\nPHP message: PHP Warning: File upload error - unable
to create a temporary file in Unknown on line 0\n'.
Our user php conf looks like the following when it first happened:
[USER]
user = $pool
group = $pool
listen = /usr/local/php72/sockets/$pool.sock
listen.owner = $pool
listen.group = apache
listen.mode = 660
pm = ondemand
pm.max_children = 100
pm.process_idle_timeout = 20
php_admin_value[sendmail_path] = /usr/sbin/sendmail -t -i -f USER@domain.tld
php_admin_value[session.save_path] = /home/USER/tmp
php_admin_value[open_basedir] = /home/USER/:/tmp/:/var/tmp/:/usr/local/php72/lib/:/usr/local/php54/lib/:/usr/local/php55/lib/:/usr/local/php56/lib/:/usr/local/php70/lib/:/usr/local/php71/lib/:/usr/local/php72/lib/:/usr/local/lib/php/
php_admin_value[mail.log] = /home/USER/.php/php-mail.log
security.limit_extensions = .php .php52 .php53 .php54 .php55 .php56 .php60 .php70 .php71 .inc .php72
It was thought that the actual fix was, by adding the tmp variables in the user php fpm conf:
env[TMP] = /tmp
env[TMPDIR] = /tmp
env[TEMP] = /tmp
Restart php-fpm, the problem seemed fix at first. But, our websites still cannot upload files.
The temporary fix seems to restart php fpm. But, after a while the problem happens again. And the conf still has the /tmp variables.
We added, in all the php.ini we could find, the upload_tmp_dir = /tmp, and that also was a temporary fix.
This has happened on multiple shared and dedicated servers, with multiple websites.
I did a test on our test server:
sys_get_temp_dir(): gives the
/tmp
ini_get('upload_tmp_dir'): gives no value:
string(0) ""
But my test files uploaded fine
Test code used from:https://www.w3schools.com/php/php_file_upload.asp
PrivateTmp=true is set to true on the PHP FPM instance. This should not have any effect, because we are giving /tmp as the specified dir...?
Is there any way how to permanently fix this issue?
- CentOS Linux release 7.5.1804 (C
- DirectAdmin server
- PHP-FPM
- PHP 7.2.10 (FPM)
