I have deployed two rails apps to Digital Ocean, Ubuntu 18.04 with Passenger and Nginx.
Both apps were built on rails 5.2.2 with ruby 2.5.1, and the second app has all the same gems at the same versions. While the first app runs fine, the second will not launch.
The last useful line of the Passenger log says:
[ E 2020-08-06 22:41:56.6186 30885/T1i age/Cor/App/Implementation.cpp:221 ]: Could not spawn process for application /var/www/html/AppName_Prod/current: The application encountered the following error: ActiveSupport::MessageEncryptor::InvalidMessage (ActiveSupport::MessageEncryptor::InvalidMessage)
I know this is somethign to do with the master.key file, but that is present and contains the correct key. I'm not using environment vars to store the master keys - they are in the master.key file inside each app's dir structure.
I've read every SO post I could find on this and none have solved my issue. Any suggestions for getting these two apps (and more) to work on the same droplet? I'm all out of ideas.
Thank you for any help you can offer.
For anyone who might have the same issue, it was a bit deceptive.
I had tried rails credentials:edit and it didn't fix the issue, but I found that the app's containing folder was owned by user:user, whereas my other app was owned by user:root.
When I changed this, everything started to work.
I hope it helps someone because I didn't find this info anywhere online and it was a lot of trial and error.
Use ls -l to list the current owner of folders in the current working directory, so you can compare them.