Having Multiple buildpacks in cloudfoundry

Question

I need to specify multiple buildpacks in my springboot application.

I have created a file multi-buildpack.yml in the root dir of my application where i have specified the 2 buildpacks.

multi-buildpack.yml File

buildpacks:
- https://github.com/cloudfoundry/python-buildpack
- https://github.com/cloudfoundry/java-buildpack

But i am getting the below error while pushing my app:

ERROR A multi-buildpack.yml file must be provided at your app root to use this buildpack.

Can anyone please help!

Thanks

Answer 1

Run the following command to ensure that you are using the cf CLI v6.38 or later:

$ cf version

To push your app with multiple buildpacks, specify each buildpack with a -b flag:

$ cf push YOUR-APP -b BUILDPACK-NAME-1 -b BUILDPACK-NAME-2 ... -b FINAL-BUILDPACK-NAME

The last buildpack you specify is the final buildpack, which can modify the launch environment and set the start command.

To see a list of available buildpacks, run cf buildpacks

More: https://docs.cloudfoundry.org/buildpacks/use-multiple-buildpacks.html

Answer 2

Unless you're on an older version of CloudFoundry, you shouldn't use the multi-buildpack buildpack anymore. True multi-buildpack support is available in the platform. Use that instead.

https://docs.cloudfoundry.org/buildpacks/use-multiple-buildpacks.html

This is currently a two step process due to some limitations with the current cf cli:

1. cf push YOUR-APP --no-start -b binary_buildpack
2. cf v3-push YOUR-APP -b BUILDPACK-NAME-1 -b BUILDPACK-NAME-2

That should go away at some point in the future and be just one command.

If you really want to use the multi-buildpack buildpack, double check the location of the multi-buildpack.yml file and the format of it. You can compare to one of the fixture tests here . Maybe even run one of the fixture tests to get a baseline test that works (or at least, should work).

Hope that helps!