I'd like to know if there's any possibility to configure Monolog in Symfony2 to create a new log file every day, for example : 2013-11-21-prod.log.
On linux, you can use logrotate (I don't know if exists other solutions on windows or macos)
In /etc/logrotate.d/ create a file (eg. sf2_myapp) and add this content :
/path/to/your/symfony_app/app/logs/prod.log {
daily
missingok
rotate 14
compress
}
You should look for logrotate on Google for more infos