Error with Symfony's cache and permissions - php

Question

I got this continuous error with cache. Something with permissions but I can't figure what's going on. In my local environment when I go a php bin/console cache:clear -e=dev it return me this
[Symfony\Component\Filesystem\Exception\IOException]
Failed to remove file "/project/var/cache/de~/pools/ORsqbHaOKl/L/K/iZULk48B-k00dzIKC2qg": unlink(/project/var/cache/de~/pools/ORsqbHaOKl/L/K/iZULk48B-k00dzIKC2qg): Permission denied.
So I need to make first a chmod -R 777 var/, then again the clear cache and it works. But when I run the website it return me
Failed to create "/project/var/cache/dev/tcpdf": mkdir(): Permission denied.
So I need again to make chmod -R 777 var/
In the production server without erasing anything sometimes i get this error
Warning: rename(C:\project\var\cache\prod/doctrine/orm/Proxies\__CG__AppBundleEntitySomeEntity.php.5a142ad84e8464.47105642,C:\project\var\cache\prod/doctrine/orm/Proxies\__CG__AppBundleEntitySomeEntity.php): Access is denied. (code: 5)
error in vendor\doctrine\common\lib\Doctrine\Common\Proxy\ProxyGenerator.php
(line 309 rename())
$tmpFileName = $fileName . '.' . uniqid('', true);
file_put_contents($tmpFileName, $proxyCode);
#chmod($tmpFileName, 0664);
rename($tmpFileName, $fileName);
}
Local environment: debian 9
Production environment: windows server 2008

Answer 1

You need to set the var folder permissions as suggested by this symfony article.
Run the following commands in your project directory and you will not come across any permission related issues on cache and logs
HTTPDUSER=$(ps axo user,comm | grep -E '[a]pache|[h]ttpd|[_]www|[w]ww-data|[n]ginx' | grep -v root | head -1 | cut -d\ -f1)
sudo setfacl -dR -m u:"$HTTPDUSER":rwX -m u:$(whoami):rwX var
sudo setfacl -R -m u:"$HTTPDUSER":rwX -m u:$(whoami):rwX var

Answer 2

I've just played around with it a bit and noticed that every time you call
bin/console cache:clear --env=prod
The user of the folder /prod will be changed to the user that is executing the call. The scripts deletes the folder and creates a new own, but that will be done be the current user set.
You can stop the script from creating a new folder by using the --no-warmup option. With that, I've fixed my problem.
bin/console cache:clear --env=prod --no-warmup
For that to work you need to fix the current situation once, at best by deleting all folders and files within the /var/cache directory.