[heroku deployment procedure ③] From Ruby version specification to deployment and access to the application (complete)


This time, I would like to execute heroku deployment as a continuation of the previous one, access the application, and complete the output of the process in heroku deployment.

If you haven't read the previous ** [heroku deployment procedure (2)] from creating a new app to displaying the index action **, please check that first. (From the URL below) https://qiita.com/nkekisasa222/items/52c872957b30f4e8de1e


Rails 5 series macOS catalina 10.15

Specify the Ruby version

Rails 5 requires Ruby 2.2.0 or later, so check with the following command.


$ ruby -v

Next, describe the confirmed version in the Gem file as shown below.


ruby 'Confirmed version'

Save the app to Git

First, check if Git is installed.


$ git --help
usage: git [--version] [--help] [-C <path>] [-c <name>=<value>]
           [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
           [-p | --paginate | -P | --no-pager] [--no-replace-objects] [--bare]
           [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
           <command> [<args>]

If it is displayed like this, there is no problem. If nothing is displayed or command not found is displayed, please install git from the following URL.


Next, check the Rails app directory with the following command.


$ ls

Run the following command in your Rails app directory to initialize your code and commit it to Git.


$ git init
$ git add .
$ git commit -m "init"

You can verify that everything was committed successfully by running the following command:


$ git status
On branch master
nothing to commit, working tree clean

Now that your application has been committed to Git, you can deploy it to Heroku.

Deploy the app to heroku

Make sure you're in the directory that contains your Rails app, then create your app on heroku.


$ heroku create
Creating app... done, secret-tor-42278
https://secret-tor-42278.herokuapp.com/ | https://git.heroku.com/secret-tor-42278.git

You can verify that the remote has been added to your project by running the following command:


$ git config --list | grep heroku

If you see # fatal: not in a git directory, it's probably not in the correct directory, so try again with the ls command.

Then deploy the code.


$ git push heroku master
remote: Compressing source files... done.
remote: Building source:
remote:  !     Warning: Multiple default buildpacks reported the ability to handle this app. The first buildpack in the list below will be used.
remote:             Detected buildpacks: Ruby,Node.js
remote:             See https://devcenter.heroku.com/articles/buildpacks#buildpack-detect-order
remote: -----> Ruby app detected
remote: -----> Compiling Ruby/Rails
remote: -----> Using Ruby version: ruby-2.6.0
remote: -----> Installing dependencies using bundler 1.15.2
remote:        Running: bundle install --without development:test --path vendor/bundle --binstubs vendor/bundle/bin -j4 --deployment
remote:        The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
remote:        Fetching gem metadata from https://rubygems.org/.........
remote:        Fetching rake 12.3.2
remote:        Installing rake 12.3.2
remote:        Fetching concurrent-ruby 1.1.4
remote:        Fetching thread_safe 0.3.6
remote:        Fetching minitest 5.11.3
remote:        Installing thread_safe 0.3.6
remote:        Installing minitest 5.11.3
remote:        Installing concurrent-ruby 1.1.4
remote:        Fetching builder 3.2.3
remote:        Installing builder 3.2.3
remote:        Fetching erubi 1.8.0
remote:        Installing erubi 1.8.0
remote:        Fetching mini_portile2 2.4.0
remote:        Fetching crass 1.0.4
remote:        Installing mini_portile2 2.4.0
remote:        Fetching rack 2.0.6
remote:        Installing crass 1.0.4
remote:        Installing rack 2.0.6
remote:        Fetching nio4r 2.3.1
remote:        Installing nio4r 2.3.1 with native extensions
remote:        Fetching websocket-extensions 0.1.3
remote:        Installing websocket-extensions 0.1.3
remote:        Fetching mini_mime 1.0.1
remote:        Installing mini_mime 1.0.1
remote:        Fetching arel 9.0.0
remote:        Installing arel 9.0.0
remote:        Fetching mimemagic 0.3.3
remote:        Fetching msgpack 1.2.4
remote:        Installing msgpack 1.2.4 with native extensions
remote:        Installing mimemagic 0.3.3
remote:        Using bundler 1.17.2
remote:        Fetching coffee-script-source 1.12.2
remote:        Installing coffee-script-source 1.12.2
remote:        Fetching execjs 2.7.0
remote:        Installing execjs 2.7.0
remote:        Fetching method_source 0.9.2
remote:        Installing method_source 0.9.2
remote:        Fetching thor 0.20.3
remote:        Installing thor 0.20.3
remote:        Fetching ffi 1.9.25
remote:        Installing ffi 1.9.25 with native extensions
remote:        Fetching multi_json 1.13.1
remote:        Installing multi_json 1.13.1
remote:        Fetching pg 1.1.3
remote:        Installing pg 1.1.3 with native extensions
remote:        Fetching puma 3.12.0
remote:        Installing puma 3.12.0 with native extensions
remote:        Fetching rb-fsevent 0.10.3
remote:        Installing rb-fsevent 0.10.3
remote:        Fetching tilt 2.0.9
remote:        Installing tilt 2.0.9
remote:        Fetching turbolinks-source 5.2.0
remote:        Installing turbolinks-source 5.2.0
remote:        Fetching tzinfo 1.2.5
remote:        Installing tzinfo 1.2.5
remote:        Fetching nokogiri 1.9.1
remote:        Installing nokogiri 1.9.1 with native extensions
remote:        Fetching i18n 1.4.0
remote:        Installing i18n 1.4.0
remote:        Fetching websocket-driver 0.7.0
remote:        Installing websocket-driver 0.7.0 with native extensions
remote:        Fetching mail 2.7.1
remote:        Installing mail 2.7.1
remote:        Fetching rack-test 1.1.0
remote:        Installing rack-test 1.1.0
remote:        Fetching sprockets 3.7.2
remote:        Installing sprockets 3.7.2
remote:        Fetching marcel 0.3.3
remote:        Installing marcel 0.3.3
remote:        Fetching coffee-script 2.4.1
remote:        Installing coffee-script 2.4.1
remote:        Fetching uglifier 4.1.20
remote:        Installing uglifier 4.1.20
remote:        Fetching bootsnap 1.3.2
remote:        Installing bootsnap 1.3.2 with native extensions
remote:        Fetching rb-inotify 0.10.0
remote:        Installing rb-inotify 0.10.0
remote:        Fetching turbolinks 5.2.0
remote:        Installing turbolinks 5.2.0
remote:        Fetching activesupport 5.2.2
remote:        Installing activesupport 5.2.2
remote:        Fetching loofah 2.2.3
remote:        Fetching sass-listen 4.0.0
remote:        Installing loofah 2.2.3
remote:        Installing sass-listen 4.0.0
remote:        Fetching rails-dom-testing 2.0.3
remote:        Installing rails-dom-testing 2.0.3
remote:        Fetching globalid 0.4.1
remote:        Installing globalid 0.4.1
remote:        Fetching activemodel 5.2.2
remote:        Installing activemodel 5.2.2
remote:        Fetching jbuilder 2.8.0
remote:        Installing jbuilder 2.8.0
remote:        Fetching sass 3.7.2
remote:        Installing sass 3.7.2
remote:        Fetching rails-html-sanitizer 1.0.4
remote:        Installing rails-html-sanitizer 1.0.4
remote:        Fetching activejob 5.2.2
remote:        Installing activejob 5.2.2
remote:        Fetching activerecord 5.2.2
remote:        Fetching actionview 5.2.2
remote:        Installing activerecord 5.2.2
remote:        Installing actionview 5.2.2
remote:        Fetching actionpack 5.2.2
remote:        Installing actionpack 5.2.2
remote:        Fetching actioncable 5.2.2
remote:        Fetching activestorage 5.2.2
remote:        Fetching actionmailer 5.2.2
remote:        Installing actioncable 5.2.2
remote:        Installing actionmailer 5.2.2
remote:        Installing activestorage 5.2.2
remote:        Fetching railties 5.2.2
remote:        Installing railties 5.2.2
remote:        Fetching sprockets-rails 3.2.1
remote:        Installing sprockets-rails 3.2.1
remote:        Fetching coffee-rails 4.2.2
remote:        Fetching sass-rails 5.0.7
remote:        Fetching rails 5.2.2
remote:        Installing rails 5.2.2
remote:        Installing coffee-rails 4.2.2
remote:        Installing sass-rails 5.0.7
remote:        Bundle complete! 18 Gemfile dependencies, 61 gems now installed.
remote:        Gems in the groups development and test were not installed.
remote:        Bundled gems are installed into `./vendor/bundle`
remote:        Post-install message from i18n:
remote:        HEADS UP! i18n 1.1 changed fallbacks to exclude default locale.
remote:        But that may break your application.
remote:        Please check your Rails app for 'config.i18n.fallbacks = true'.
remote:        If you're using I18n (>= 1.1.0) and Rails (< 5.2.2), this should be
remote:        'config.i18n.fallbacks = [I18n.default_locale]'.
remote:        If not, fallbacks will be broken in your app by I18n 1.1.x.
remote:        For more info see:
remote:        https://github.com/svenfuchs/i18n/releases/tag/v1.1.0
remote:        Post-install message from sass:
remote:        Ruby Sass is deprecated and will be unmaintained as of 26 March 2019.
remote:        * If you use Sass as a command-line tool, we recommend using Dart Sass, the new
remote:          primary implementation: https://sass-lang.com/install
remote:        * If you use Sass as a plug-in for a Ruby web framework, we recommend using the
remote:          sassc gem: https://github.com/sass/sassc-ruby#readme
remote:        * For more details, please refer to the Sass blog:
remote:          http://sass.logdown.com/posts/7081811
remote:        Removing bundler (1.15.2)
remote:        Bundle completed (42.62s)
remote:        Cleaning up the bundler cache.
remote:        The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
remote: -----> Installing node-v8.10.0-linux-x64
remote: -----> Detecting rake tasks
remote: -----> Preparing app for Rails asset pipeline
remote:        Running: rake assets:precompile
remote:        Yarn executable was not detected in the system.
remote:        Download Yarn at https://yarnpkg.com/en/docs/install
remote:        I, [2019-01-03T17:16:39.683335 #1309]  INFO -- : Writing /tmp/build_020cb65e00979312f798ba48446f2064/public/assets/application-9622f0fe63bfad91bdeaa3a771e86262263840678fd66849b311b6cfb3f7cc85.js
remote:        I, [2019-01-03T17:16:39.683750 #1309]  INFO -- : Writing /tmp/build_020cb65e00979312f798ba48446f2064/public/assets/application-9622f0fe63bfad91bdeaa3a771e86262263840678fd66849b311b6cfb3f7cc85.js.gz
remote:        I, [2019-01-03T17:16:39.693392 #1309]  INFO -- : Writing /tmp/build_020cb65e00979312f798ba48446f2064/public/assets/application-e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855.css
remote:        I, [2019-01-03T17:16:39.693515 #1309]  INFO -- : Writing /tmp/build_020cb65e00979312f798ba48446f2064/public/assets/application-e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855.css.gz
remote:        Asset precompilation completed (3.72s)
remote:        Cleaning assets
remote:        Running: rake assets:clean
remote: -----> Detecting rails configuration
remote: ###### WARNING:
remote:        You set your `config.active_storage.service` to :local in production.
remote:        If you are uploading files to this app, they will not persist after the app
remote:        is restarted, on one-off dynos, or if the app has multiple dynos.
remote:        Heroku applications have an ephemeral file system. To
remote:        persist uploaded files, please use a service such as S3 and update your Rails
remote:        configuration.
remote:        For more information can be found in this article:
remote:          https://devcenter.heroku.com/articles/active-storage-on-heroku
remote: ###### WARNING:
remote:        We detected that some binary dependencies required to
remote:        use all the preview features of Active Storage are not
remote:        present on this system.
remote:        For more information please see:
remote:          https://devcenter.heroku.com/articles/active-storage-on-heroku
remote: ###### WARNING:
remote:        No Procfile detected, using the default web server.
remote:        We recommend explicitly declaring how to boot your server process via a Procfile.
remote:        https://devcenter.heroku.com/articles/ruby-default-web-server
remote: -----> Discovering process types
remote:        Procfile declares types     -> (none)
remote:        Default types for buildpack -> console, rake, web
remote: -----> Compressing...
remote:        Done: 41.3M
remote: -----> Launching...
remote:        Released v6
remote:        https://secret-tor-42278.herokuapp.com/ deployed to Heroku
remote: Verifying deploy... done.
To https://git.heroku.com/secret-tor-42278.git
 * [new branch]      master -> master

It is always advisable to check the execution results for warnings or errors. If all is well, you can migrate the database.

Database migration

Migrate the database manually with the following command:


$ heroku run rake db:migrate

Access the app

Make sure you have one dyno that runs the web process type.


$ heroku ps:scale web=1

Check the status of dyno.


$ heroku ps
Free dyno hours quota remaining this month: 967h 44m (96%)
Free dyno usage for this app: 0h 0m (0%)
For more information on dyno sleeping and how to upgrade, see:

=== web (Free): bin/rails server -p $PORT -e $RAILS_ENV (1)
web.1: starting 2019/01/03 11:16:50 -0600 (~ 6s ago)

If it is output like this, one dyno is running and you can access the app in your browser.


$ heroku open

You should see the ** index action ** you created last time.

heroku provides a default web URL for simplification during development. When you're ready to scale up heroku and use it in production, you can add your own custom domain from the URL below.



This completes the heroku deployment procedure. If you want to find out more, please access the official reference from the URL below!


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