Here is Apache 2 configuration:
# Depends: mpm_prefork LoadModule mpm_itk_module /usr/lib/apache2/modules/mpm_itk.so
# Conflicts: mpm_event mpm_worker mpm_itk LoadModule mpm_prefork_module /usr/lib/apache2/modules/mod_mpm_prefork.so
The comments don't add much clarity - mpm-prefork conflicts with mpm-itk, but mpm-itk depends on it?
/etc/apache2/mods-enabled/mpm_itk.load is removed, there is an error:
AH00534: apache2: Configuration error: No MPM loaded.
I'm not sure what's going on there. Is mpm-itk broken or does it really depend on mpm-prefork?
Is it bad that both modules are loaded? Which of these modules is used by Apache in practice and why? How to make Apache use another one?