
Q: Can I use BOA to host Drupal sites outside of Aegir?

A: Yes, but it is an unsupported feature, so you need to figure out how to
   do it properly and you should be prepared that things may explode without
   any warning after next BOA upgrade. The best place to ask for assistance is,
   as always, BOA group at: https://groups.drupal.org/boa


Q: Can I use BOA to host sites with different engines, like WordPress?

A: Yes, but it is an unsupported feature, so you need to figure out how to
   do it properly and you should be prepared that things may explode without
   any warning after next BOA upgrade. The best place to ask for assistance is,
   as always, BOA group at: https://groups.drupal.org/boa
   Check also: https://drupal.org/node/1416798


Q: Can I install services and apps not included in BOA?

A: It depends. BOA uses very aggressive upgrades procedures and if it is not
   aware of extra services installed and running, it may even uninstall them
   if the system packages dependency autoclean will trigger such action,
   so you need to watch closely what happens during and after barracuda upgrade.


Q: Can I call Drush from PHP scripts running via PHP-FPM (web based requests)?

A: Theoretically yes, but Drush should never be available for web requests,
   period. Not because we are telling you that it is bad and ugly, but because
   PHP-CLI and PHP-FPM are totally separate tools for many reasons, including
   privileges separation, security, cascades of various limits etc. You should
   use better, proper and secure method to run PHP, and if you need to extend
   or interact with Drupal via web requests, you should use Drupal API, along
   with contrib or custom modules and never attempt to call Drush from PHP-FPM.


Q: How to increase PHP-FPM memory_limit after BOA-2.2.0 upgrade?

A: While limits are still auto-configured, depending on available RAM and CPU
   cores and written in the respective PHP ini files, the only place to modify
   `memory_limit` manually is the line with `php_admin_value[memory_limit]`
   in a file shared between all PHP-FPM pools in all running PHP versions:
   `/opt/etc/fpm/fpm-pool-common.conf` -- of course you need to reload all
   running FPM versions to make the change active, for example:
   `service php53-fpm reload`, `service php55-fpm reload`, etc.
   Check also: https://drupal.org/comment/8689745#comment-8689745


Q: Why `drush4` command no longer works?

A: Please read: https://drupal.org/comment/8691511#comment-8691511

