问题
I tried changing the default ruby command to 1.9.2 but Passenger keeps running 1.8.7
Is Passenger compiled with Ruby embedded?
回答1:
To set the Ruby version add this line to your vhost file:
PassengerRuby /path/to/the/ruby/version/you/want/to/use
回答2:
Whenever a "bundle update" updates the version of the passenger gem, I do
sudo su -
passenger-install-apache2-module
At the end of that process, it spits out the full blob of stuff that you need to put at the top or your Apache config. E.g. something like:
LoadModule passenger_module /usr/local/rvm/gems/ruby-1.9.2-p180@rails31/gems/passenger-3.0.9/ext/apache2/mod_passenger.so
PassengerRoot /usr/local/rvm/gems/ruby-1.9.2-p180@rails31/gems/passenger-3.0.9
PassengerRuby /usr/local/rvm/wrappers/ruby-1.9.2-p180@rails31/ruby
I update the blob of stuff, restart Apache and all seems well.
I imagine that this same process is necessary after updating Ruby.
回答3:
Set PassengerRuby before the <Directory> tag.
Example:
PassengerRuby /home/ubuntu/.rvm/wrappers/ruby-2.3.1/ruby
It is working for me!
Find more detail in this post.
来源：https://stackoverflow.com/questions/8102095/is-it-possible-to-change-passenger-ruby-version-without-recompiling