Rails on Azure app service: “Could not find 'bundler' (2.1.4)”

Question

Rails on Azure app service: “Could not find 'bundler' (2.1.4)”

PlasticTrees 26

I'm trying to deploy my Ruby 2.6.2 with Rails 6.0.3.4 and I'm getting GemNotFoundException with Bundler:

Running bundle check

`find_spec_for_exe&#39;: Could not find &#39;bundler&#39; (2.1.4) required by your /home/site/wwwroot&gt;/Gemfile.lock. (Gem::GemNotFoundException)
To update to the latest version installed on your system
To update to the latest version installed on your system, run `bundle update --bundler`.
To install the missing version, run `gem install bundler:2.1.4`

Running 'gem list bundler' on my local machine returns, I remove the defualt version.

bundler (2.1.4)

I've tried updating gem and it's 3.1.4.

I'm pretty sure I'm correctly pushing it to Azure, as I made a new app service and pushed my Rails app with bundler 2.1.4 and I've tried restarting the VM.

Quite new to Azure, so am pretty stuck on this.

Ryan Hill 30,281 Reputation points Microsoft Employee Moderator

2020-11-23T18:58:09.81+00:00

Hi @PlasticTrees ,

I'll need to follow up with the engineering team as there may be an issue with the app service ruby image. I'm assuming when you mention, you're referring to an App Service running inside a Linux hosting plan, like this quick start. If not, could you provide your deployment repro steps? Also, if possible, please include your Gemfile so we can observe what sort of dependencies may be invovled.

Regards,
Ryan
PlasticTrees 26 Reputation points

2020-11-25T11:43:06.467+00:00

Yes, I followed the quick start.

However, I've got it working now in Linux following the same steps. So I'm pretty sure it's a windows issue wth SQLite3.

I'm happy to provide more information on this. But I would like to point out that the documentation of ruby applications is rather poor and I'm close to going with AWS. You seem to have documentation on other languages but Ruby and Rails.

I've attached my gem file, this is from my linux application, but the gems are the same as the quickstart apart from OAuth, which I've installed myself.

42673-gemfile.txt
Ryan Hill 30,281 Reputation points Microsoft Employee Moderator

2020-11-25T15:03:57.747+00:00

Hi @PlasticTrees ,

Thanks for your feedback. I'll definitely share your concerns with our content team so we can ensure our Ruby Rails docs are more cohesive. I'll let you know what I'm able to determine.

Regards,
Ryan
PlasticTrees 26 Reputation points

2020-11-25T15:46:46.897+00:00

No worries. I'm happy to provide some more info/thoughts if you'd like.

If you've got a minute, would you be able to help me out with my other question?

https://learn.microsoft.com/en-us/answers/questions/175128/rails-implementing-b2c-to-web-app.html

Many thanks,

Toby.

1 answer

Your answer

Ryan Hill 30,281 Reputation points Microsoft Employee Moderator

2020-11-23T18:58:09.81+00:00

Hi @PlasticTrees ,

I'll need to follow up with the engineering team as there may be an issue with the app service ruby image. I'm assuming when you mention, you're referring to an App Service running inside a Linux hosting plan, like this quick start. If not, could you provide your deployment repro steps? Also, if possible, please include your Gemfile so we can observe what sort of dependencies may be invovled.

Regards,
Ryan
PlasticTrees 26 Reputation points

2020-11-25T11:43:06.467+00:00

Yes, I followed the quick start.

However, I've got it working now in Linux following the same steps. So I'm pretty sure it's a windows issue wth SQLite3.

I'm happy to provide more information on this. But I would like to point out that the documentation of ruby applications is rather poor and I'm close to going with AWS. You seem to have documentation on other languages but Ruby and Rails.

I've attached my gem file, this is from my linux application, but the gems are the same as the quickstart apart from OAuth, which I've installed myself.

42673-gemfile.txt
Ryan Hill 30,281 Reputation points Microsoft Employee Moderator

2020-11-25T15:03:57.747+00:00

Hi @PlasticTrees ,

Thanks for your feedback. I'll definitely share your concerns with our content team so we can ensure our Ruby Rails docs are more cohesive. I'll let you know what I'm able to determine.

Regards,
Ryan
PlasticTrees 26 Reputation points

2020-11-25T15:46:46.897+00:00

No worries. I'm happy to provide some more info/thoughts if you'd like.

If you've got a minute, would you be able to help me out with my other question?

https://learn.microsoft.com/en-us/answers/questions/175128/rails-implementing-b2c-to-web-app.html

Many thanks,

Toby.

Answer 1

Ryan Hill 30,281 Microsoft Employee Moderator

Hi @PlasticTrees ,

I did some additional looking. Currently, Ruby is only supported for Linux hosted app service. That's more than likely the issue you were running into if you were deploy to a Windows hosted app. I am pleased to hear that oauth library anonymous user-msft provided was able to provide helpful.

Regards,
Ryan

pete 1 Reputation point

2021-06-10T02:39:15.117+00:00

@Ryan Hill I did some testing and it looks like the bundler that comes with the ruby App Service build is from the 1.x series, so any rails app bundled with bundler 2.x will fail with this error. Is there any plan to offer more than one version of bundler in the buildpack?
Ryan Hill 30,281 Reputation points Microsoft Employee Moderator

2021-06-10T13:36:39.983+00:00

I will check with the product group @pete and let you know.

EDIT: At the time, there no plans to improve this. The recommendation is run your Ruby Rails app inside a docker container.

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Rails on Azure app service: “Could not find 'bundler' (2.1.4)”

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