Change Apache MPM from prefork to worker

Question

I need to change MPM prefork module to worker but it\'s not working on my Debian 9.1. When I enable worker module, PHP is not working. I can\'t enable php7.0 module back.

Answer 1

I got the following error

sudo a2enmod php7.2 
Considering dependency mpm_prefork for php7.2:
Considering conflict mpm_event for mpm_prefork:
ERROR: Module mpm_event is enabled - cannot proceed due to conflicts. It needs to be disabled first!
Considering conflict mpm_worker for mpm_prefork:
ERROR: Could not enable dependency mpm_prefork for php7.2, aborting

And to fix I simply did

sudo a2dismod mpm_event
sudo a2enmod php7.2
sudo systemctl restart apache2

you might also want to try restarting your server