Elastic Beanstalk: can't find gem bundler (>= 0.a) with executable bundle (Gem::GemNotFoundException)
So here's the programmatic solution to the above problem. Create the below file under .ebextensions/gem_install_bundler.config
:
files:
# Runs before `./10_bundle_install.sh`:
"/opt/elasticbeanstalk/hooks/appdeploy/pre/09_gem_install_bundler.sh" :
mode: "000775"
owner: root
group: users
content: |
#!/usr/bin/env bash
EB_APP_STAGING_DIR=$(/opt/elasticbeanstalk/bin/get-config container -k app_staging_dir)
EB_SCRIPT_DIR=$(/opt/elasticbeanstalk/bin/get-config container -k script_dir)
# Source the application's ruby, i.e. 2.6. Otherwise it will be 2.3, which will give this error: `bundler requires Ruby version >= 2.3.0`
. $EB_SCRIPT_DIR/use-app-ruby.sh
cd $EB_APP_STAGING_DIR
echo "Installing compatible bundler"
gem install bundler -v 2.0.1
Then when you next eb deploy
, the bundler will have been updated to version 2.0.1, and you won't get the above error again.
More information in the docs here:
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/custom-platform-hooks.html
and here:
https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/customize-containers-ec2.html#linux-files
Last note: Ensure that you either commit these changes before running eb deploy
, or stage them and run eb deploy --staged
. See: https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/eb3-cli-git.html. I learned this the hard way!