Can you run a rails console or rake command in the elastic beanstalk environment?

Question

I have set up a RoR environement on AWS\' elastic beanstalk. I am able to ssh into my EC2 instance. My home directory is /home/ec2-user, which is effective

Answer 1

For Ruby 2.7:

if you don't need environment variables:

BUNDLE_PATH=/var/app/current/vendor/bundle/ bundle exec rails c

It looks like environment variables are not loaded automatically anymore, which might prevent rails console from starting. I solved it by creating this .ebextensions file:

# Simply call `sudo /var/app/scripts/rails_c`

commands:
  create_script_dir:
    command: "mkdir -p /var/app/scripts"
    ignoreErrors: true
files:
  "/var/app/scripts/export_envvars":
    mode: "000755"
    owner: root
    group: root
    content: |
      #!/opt/elasticbeanstalk/.rbenv/shims/ruby

      if __FILE__ == $0
          require 'json'
          env_file = '/var/app/scripts/envvars'
          env_vars = env_vars = JSON.parse(`/opt/elasticbeanstalk/bin/get-config environment`)

          str = ''
          env_vars.each do |key, value|
              new_key = key.gsub(/\s/, '_')
              str << "export #{new_key}=\"#{value}\"\n"
          end

          File.open(env_file, 'w') { |f| f.write(str) }
      end
  "/var/app/scripts/rails_c":
    mode: "000755"
    owner: root
    group: root
    content: |
      . ~/.bashrc
      /var/app/scripts/export_envvars
      . /var/app/scripts/envvars
      cd /var/app/current
      /opt/elasticbeanstalk/.rbenv/shims/bundle exec rails c

Answer 2

For the latest ruby version, please use the following command:

BUNDLE_PATH=/opt/rubies/ruby-2.6.3/lib/ruby/gems/2.6.0/ bundle exec rails c production

Running it with sudo is not needed.

Answer 3

You have to find the folder with your Gemfile :p.

To do that, I would take a look in you web server config there should be a config that tells you where your app directory is.

Maybe you know where your app is.

But in case you don't know, I would give a try to:

grep -i your_app_name /etc/apache/*
grep -i your_app_name /etc/apache/sites-enabled/*

To search files containing your_app_name in Apache config.

Or if you are using nginx, replace apache above by nginx.

after you find application folder, cd into it and run RAILS_ENV=production bundle exec rails c.

Making sure that your application is configured to run in production in Apache or nginx configuration.

Answer 4

I like to create an eb_console file at the root of my rails app, then chmod u+x it. It contains the following:

ssh -t ec2-user@YOUR_EC2_STATION.compute.amazonaws.com  'cd /var/app/current && bin/rails c'

This way, I just have to run:

./eb_console

like I would have run heroku run bundle exec rails c.

Answer 5

add an eb extension shortcut:

# .ebextensions/irb.config
files:
  "/home/ec2-user/irb":
    mode: "000777"
    owner: root
    group: root
    content: |
      sudo su - -c 'cd /var/app/current; bundle exec rails c'

then:

$ eb ssh
$ ./irb
irb(main):001:0>

Answer 6

None of the other answers worked for me so I went looking - this is working for me now on an elastic beanstalk 64bit amazon linux 2016.03 V2.1.2 ruby 2.2 (puma) stack

cd /var/app/current
sudo su
rake rails:update:bin
bundle exec rails console

that returns me the expected console

Loading production environment (Rails 4.2.6)
irb(main):001:0>