Unsure whether this is a bug report or a feature request. The comment here suggest that it is a known limitation that this doesn't work with the Nginx bundle and this suggests that this is a feature request.
I'm on Ubuntu 20.04 LTS, Virtualmin 6.11, Webmin 1.954, fresh install.
virtualmin check-config tells me the following:
The following PHP versions are available : 5.6.40 (/bin/php5.6), 7.0.33 (/bin/php7.0), 7.1.33 (/bin/php7.1), 7.2.33 (/bin/php7.2), 7.3.21 (/bin/php7.3), 7.4.9 (/bin/php-cgi7.4) The following PHP execution modes are available : fcgid fpm The following PHP-FPM versions are available on this system : 5.6.40 (php5.6-fpm) 7.0.33 (php7.0-fpm) 7.1.33 (php7.1-fpm) 7.2.33 (php7.2-fpm) 7.3.21 (php7.3-fpm) 7.4.3 (php7.4-fpm)
Server Configuration -> PHP Versions and trying to change the PHP version yields the following message:
Failed to save PHP versions : The PHP version cannot be changed when in FPM mode.
It won't be long before PHP 8 is released and I'd like to be able to offer PHP 8 on select virtual servers via PHP-FPM too.
While this is not possible to do via Virtualmin in the time of writing, I'd appreciate any info on how to properly do this manually as well.