GAE standard and Rails

[mauro_locatelli]

I am trying to put a new Ruby on Rails application on Google App Engine standard, but this time without success. I get an error in the cloud build that I just can't decipher

=== Ruby - Appengine Validation (google.ruby.appengine-validation@0.9.0) ===

failed to build: (error ID: e3b0c442): ERROR: failed to build: exit status 1

Have you ever experienced a similar situation? GAE standerd with Rails 7.2, ruby 3.3.

Its works fine in GAE flex so it's a limitation with standard environment buy I am not able to find any information about 'why?'

[a_aleinikov]

Hi @mauro_locatelli ,

Yes — you’ve hit a known limitation.

What you can do:

• Check the App Engine Standard Ruby runtime docs → https://cloud.google.com/appengine/docs/standard/ruby/runtime

• Try downgrading to Ruby 2.7 and an older Rails version supported by the standard environment.

• Stay on GAE Flex if you need Ruby 3.3 + Rails 7.2.

[mauro_locatelli]

Thanks for your answer, probabily the problem is only with Rails 7.2 because I use Ruby32 with other app on standard engine.