Heroku, Grails: Missing resources if using multiple web dynos

Question

I have created grails application and uploaded it in heroku.
If I use \'heroku scale web=1\' everything looks OK. But if I run \'heroku scale web=2\', some

Answer 1

All assets which are in your slug (your git push essentially) should be present on all dynos. Are these assets that have been uploaded? If so, Heroku has an effectively read-only file system (http://devcenter.heroku.com/articles/dyno-isolation#ephemeral_filesystem), so you need to ensure that these assets are going to something external such as Amazons S3.

http://grails.org/plugin/amazon-s3