2018-07-13_Ruby,Rails環境のセットアップ

このページで分かること

  • UbuntuでRuby環境のセットアップ方法

最近Progateを使ってRubyとRuby on Railsの勉強をしています。Progateは複雑な環境設定をしなくてもWeb上でコードやコマンドの動きを確認できるのが魅力ではありますが実際に自分で動かす環境構築は後々必須になってくるのでまとめました。

環境

  • ホスト: Windows 10 Pro v1803
  • ゲスト: Ubuntu Ubuntu 16.04.4 LTS

※今回はvagrantのboxでUbuntuを用意してます。

概要・主な流れ

今回は下記を導入しrailsのwelcomeページが表示されるところまで環境を構築します。

導入するもの 役割
rbenv 複数のRubyを切り替えて使えるツール
ruby-build rbenvを使うのに必要
gem Railsの依存関係を解決してくれるツール。Rails自体のインストールやRailsで使うパッケージのインストールに使う
Rails Webアプリケーションを作成できるフレームワーク

Rubyの環境構築

  1. vagrantでUbuntuを用意
  2. rbenv ruby-build のインストール
  3. .bashrcに設定を書き込む
  4. rbenvでRubyをインストール

Railsの環境構築

  1. Railsのインストール
  2. 動作確認

Rubyの環境構築

1. vagrantでUbuntuを用意

Vagrantについては別記で構築方法を記載します。 コマンドプロンプトなどで任意のディレクトリを作成し下記コマンドを実行してくだささい。

※詳細はVagrantを使ってLinux開発環境を用意しようを御覧ください。

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$c vagrant init ubuntu/xenial64
$c vagrant ssh

2. rbenv ruby-build のインストール

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##c ~/.rbenvにインストールします。
$c cd ~/
$c git clone https://github.com/sstephenson/rbenv.git .rbenv
$c git clone https://github.com/sstephenson/ruby-build.git .rbenv/plugins/ruby-build

##c 必要パッケージのインストール
$c sudo apt update
$c sudo apt install -y ruby ruby-dev libsqlite3-dev nodejs autoconf bison build-essential gcc make libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev

※1 libsqlite3-devが入ってないとrailsのプロジェクト作成時にエラーが出ます。

※2 nodejsが入ってないとrails server時にエラーが出て起動しません。

3. .bashrcに設定を書き込む

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$c echo "export RBENV_HOME=${HOME}/.rbenv" >> ~/.bashrc
$c echo -e "export PATH=\x22${HOME}/.rbenv/bin:\$PATH\x22" >> ~/.bashrc
$c echo 'eval "$(rbenv init -)"' >> ~/.bashrc
$c source ~/.bashrc

4. rbenvでRubyをインストール

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##c インストール可能な種類の確認
$c rbenv install -l

##c インストール ※ install_version=2.5.1 など
$c rbenv install ${install_version}

##c 切り替え
$c rbenv global ${install_version}

## 切り替わったか確認
$c ruby -v

Railの環境構築

1. Railsのインストール

gemを使ってインストールします。ruby-devがないとコケますが今回はインストール済みなので上手く行くはずです。

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##c 最新版のインストール(18/07/07現在 5.2.0が入りました)
$c gem install rails

##c バージョンを指定してインストールする場合 version=4.2.8 など
$c gem install rails --version "${version}"

##c railsのバージョン確認
$c rails -v

2. 動作確認

実際にrailsプロジェクトを作成して動作確認をしてみましょう。

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##c プロジェクト作成
$c rails new ${project_name}

##c プロジェクトディレクトリへ移動
$c cd ${project_name}

##c railsサーバーを起動する
$c rails server

##c ブラウザで http://${ip}:3000 してページが表示されれば構築完了

エラーログ備考

rails new時のエラー

libsqlite3-devがないとgemでsqlite3が入らないっぽいです。

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vagrant@ubuntu-xenial:~$ rails new hoge
      create
      create  README.md
      create  Rakefile
      create  .ruby-version
      create  config.ru
      create  .gitignore
      create  Gemfile
         run  git init from "."
Initialized empty Git repository in /home/vagrant/hoge/.git/
      create  package.json
      create  app
      create  app/assets/config/manifest.js
      create  app/assets/javascripts/application.js
      create  app/assets/javascripts/cable.js
      create  app/assets/stylesheets/application.css
      create  app/channels/application_cable/channel.rb
      create  app/channels/application_cable/connection.rb
      create  app/controllers/application_controller.rb
      create  app/helpers/application_helper.rb
      create  app/jobs/application_job.rb
      create  app/mailers/application_mailer.rb
      create  app/models/application_record.rb
      create  app/views/layouts/application.html.erb
      create  app/views/layouts/mailer.html.erb
      create  app/views/layouts/mailer.text.erb
      create  app/assets/images/.keep
      create  app/assets/javascripts/channels
      create  app/assets/javascripts/channels/.keep
      create  app/controllers/concerns/.keep
      create  app/models/concerns/.keep
      create  bin
      create  bin/bundle
      create  bin/rails
      create  bin/rake
      create  bin/setup
      create  bin/update
      create  bin/yarn
      create  config
      create  config/routes.rb
      create  config/application.rb
      create  config/environment.rb
      create  config/cable.yml
      create  config/puma.rb
      create  config/spring.rb
      create  config/storage.yml
      create  config/environments
      create  config/environments/development.rb
      create  config/environments/production.rb
      create  config/environments/test.rb
      create  config/initializers
      create  config/initializers/application_controller_renderer.rb
      create  config/initializers/assets.rb
      create  config/initializers/backtrace_silencers.rb
      create  config/initializers/content_security_policy.rb
      create  config/initializers/cookies_serializer.rb
      create  config/initializers/cors.rb
      create  config/initializers/filter_parameter_logging.rb
      create  config/initializers/inflections.rb
      create  config/initializers/mime_types.rb
      create  config/initializers/new_framework_defaults_5_2.rb
      create  config/initializers/wrap_parameters.rb
      create  config/locales
      create  config/locales/en.yml
      create  config/master.key
      append  .gitignore
      create  config/boot.rb
      create  config/database.yml
      create  db
      create  db/seeds.rb
      create  lib
      create  lib/tasks
      create  lib/tasks/.keep
      create  lib/assets
      create  lib/assets/.keep
      create  log
      create  log/.keep
      create  public
      create  public/404.html
      create  public/422.html
      create  public/500.html
      create  public/apple-touch-icon-precomposed.png
      create  public/apple-touch-icon.png
      create  public/favicon.ico
      create  public/robots.txt
      create  tmp
      create  tmp/.keep
      create  tmp/cache
      create  tmp/cache/assets
      create  vendor
      create  vendor/.keep
      create  test/fixtures
      create  test/fixtures/.keep
      create  test/fixtures/files
      create  test/fixtures/files/.keep
      create  test/controllers
      create  test/controllers/.keep
      create  test/mailers
      create  test/mailers/.keep
      create  test/models
      create  test/models/.keep
      create  test/helpers
      create  test/helpers/.keep
      create  test/integration
      create  test/integration/.keep
      create  test/test_helper.rb
      create  test/system
      create  test/system/.keep
      create  test/application_system_test_case.rb
      create  storage
      create  storage/.keep
      create  tmp/storage
      create  tmp/storage/.keep
      remove  config/initializers/cors.rb
      remove  config/initializers/new_framework_defaults_5_2.rb
         run  bundle install
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`.
Fetching gem metadata from https://rubygems.org/.........
Fetching gem metadata from https://rubygems.org/.
Resolving dependencies...
Fetching rake 12.3.1
Installing rake 12.3.1
Using concurrent-ruby 1.0.5
Using i18n 1.0.1
Fetching minitest 5.11.3
Installing minitest 5.11.3
Using thread_safe 0.3.6
Using tzinfo 1.2.5
Using activesupport 5.2.0
Using builder 3.2.3
Using erubi 1.7.1
Using mini_portile2 2.3.0
Using nokogiri 1.8.4
Using rails-dom-testing 2.0.3
Using crass 1.0.4
Using loofah 2.2.2
Using rails-html-sanitizer 1.0.4
Using actionview 5.2.0
Using rack 2.0.5
Using rack-test 1.0.0
Using actionpack 5.2.0
Using nio4r 2.3.1
Using websocket-extensions 0.1.3
Using websocket-driver 0.7.0
Using actioncable 5.2.0
Using globalid 0.4.1
Using activejob 5.2.0
Using mini_mime 1.0.0
Using mail 2.7.0
Using actionmailer 5.2.0
Using activemodel 5.2.0
Using arel 9.0.0
Using activerecord 5.2.0
Using mimemagic 0.3.2
Using marcel 0.3.2
Using activestorage 5.2.0
Fetching public_suffix 3.0.2
Installing public_suffix 3.0.2
Fetching addressable 2.5.2
Installing addressable 2.5.2
Fetching io-like 0.3.0
Installing io-like 0.3.0
Fetching archive-zip 0.11.0
Installing archive-zip 0.11.0
Fetching bindex 0.5.0
Installing bindex 0.5.0 with native extensions
Fetching msgpack 1.2.4
Installing msgpack 1.2.4 with native extensions
Fetching bootsnap 1.3.0
Installing bootsnap 1.3.0 with native extensions
Using bundler 1.16.2
Fetching byebug 10.0.2
Installing byebug 10.0.2 with native extensions
Fetching xpath 3.1.0
Installing xpath 3.1.0
Fetching capybara 3.3.1
Installing capybara 3.3.1
Fetching ffi 1.9.25
Installing ffi 1.9.25 with native extensions
Fetching childprocess 0.9.0
Installing childprocess 0.9.0
Fetching chromedriver-helper 1.2.0
Installing chromedriver-helper 1.2.0
Fetching coffee-script-source 1.12.2
Installing coffee-script-source 1.12.2
Fetching execjs 2.7.0
Installing execjs 2.7.0
Fetching coffee-script 2.4.1
Installing coffee-script 2.4.1
Using method_source 0.9.0
Using thor 0.20.0
Using railties 5.2.0
Fetching coffee-rails 4.2.2
Installing coffee-rails 4.2.2
Fetching multi_json 1.13.1
Installing multi_json 1.13.1
Fetching jbuilder 2.7.0
Installing jbuilder 2.7.0
Fetching rb-fsevent 0.10.3
Installing rb-fsevent 0.10.3
Fetching rb-inotify 0.9.10
Installing rb-inotify 0.9.10
Fetching ruby_dep 1.5.0
Installing ruby_dep 1.5.0
Fetching listen 3.1.5
Installing listen 3.1.5
Fetching puma 3.11.4
Installing puma 3.11.4 with native extensions
Using sprockets 3.7.2
Using sprockets-rails 3.2.1
Using rails 5.2.0
Fetching rubyzip 1.2.1
Installing rubyzip 1.2.1
Fetching sass-listen 4.0.0
Installing sass-listen 4.0.0
Fetching sass 3.5.6
Installing sass 3.5.6
Fetching tilt 2.0.8
Installing tilt 2.0.8
Fetching sass-rails 5.0.7
Installing sass-rails 5.0.7
Fetching selenium-webdriver 3.13.0
Installing selenium-webdriver 3.13.0
Fetching spring 2.0.2
Installing spring 2.0.2
Fetching spring-watcher-listen 2.0.1
Installing spring-watcher-listen 2.0.1
Fetching sqlite3 1.3.13
Installing sqlite3 1.3.13 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    current directory: /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/sqlite3-1.3.13/ext/sqlite3
/home/vagrant/.rbenv/versions/2.5.1/bin/ruby -r ./siteconf20180708-30910-bcrrvy.rb extconf.rb
checking for sqlite3.h... no
sqlite3.h is missing. Try 'brew install sqlite3',
'yum install sqlite-devel' or 'apt-get install libsqlite3-dev'
and check your shared library search path (the
location where your sqlite3 shared library is located).
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/home/vagrant/.rbenv/versions/2.5.1/bin/$(RUBY_BASE_NAME)
        --with-sqlite3-config
        --without-sqlite3-config
        --with-pkg-config
        --without-pkg-config
        --with-sqlite3-dir
        --without-sqlite3-dir
        --with-sqlite3-include
        --without-sqlite3-include=${sqlite3-dir}/include
        --with-sqlite3-lib
        --without-sqlite3-lib=${sqlite3-dir}/lib

To see why this extension failed to compile, please check the mkmf.log which can be found here:

  /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/extensions/x86_64-linux/2.5.0-static/sqlite3-1.3.13/mkmf.log

extconf failed, exit code 1

Gem files will remain installed in /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/sqlite3-1.3.13 for inspection.
Results logged to /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/extensions/x86_64-linux/2.5.0-static/sqlite3-1.3.13/gem_make.out

An error occurred while installing sqlite3 (1.3.13), and Bundler cannot continue.
Make sure that `gem install sqlite3 -v '1.3.13' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  sqlite3
         run  bundle exec spring binstub --all
Could not find gem 'sqlite3' in any of the gem sources listed in your Gemfile.
Run `bundle install` to install missing gems.
vagrant@ubuntu-xenial:~$

rails server時のエラー

uglifierというパッケージが動かない為、エラーが出ています。このパッケージはnodejsをインストールすると動くみたいです。

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vagrant@ubuntu-xenial:~/hoge2$ rails server
Traceback (most recent call last):
        45: from bin/rails:3:in `<main>'
        44: from bin/rails:3:in `load'
        43: from /home/vagrant/hoge2/bin/spring:15:in `<top (required)>'
        42: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in `require'
        41: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in `require'
        40: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
        39: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
        38: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
        37: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
        36: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
        35: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
        34: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
        33: from /home/vagrant/hoge2/bin/rails:9:in `<top (required)>'
        32: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
        31: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
        30: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
        29: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
        28: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
        27: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
        26: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
        25: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
        24: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands.rb:18:in `<main>'
        23: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/command.rb:46:in `invoke'
        22: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/command/base.rb:65:in `perform'
        21: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
        20: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
        19: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
        18: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `perform'
        17: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `tap'
        16: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:145:in `block in perform'
        15: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
        14: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
        13: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
        12: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
        11: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
        10: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
         9: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
         8: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
         7: from /home/vagrant/hoge2/config/application.rb:7:in `<main>'
         6: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler.rb:114:in `require'
         5: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:65:in `require'
         4: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:65:in `each'
         3: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:76:in `block in require'
         2: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:76:in `each'
         1: from /home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:80:in `block (2 levels) in require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:84:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'uglifier'. (Bundler::GemRequireError)
Gem Load Error is: Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes.
Backtrace for gem load error is:
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/execjs-2.7.0/lib/execjs/runtimes.rb:58:in `autodetect'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/execjs-2.7.0/lib/execjs.rb:5:in `<module:ExecJS>'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/execjs-2.7.0/lib/execjs.rb:4:in `<main>'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/uglifier-4.1.14/lib/uglifier.rb:5:in `<main>'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:71:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:71:in `block in require_with_bootsnap_lfi'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:70:in `require_with_bootsnap_lfi'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:79:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:81:in `block (2 levels) in require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:76:in `each'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:76:in `block in require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:65:in `each'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler/runtime.rb:65:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bundler-1.16.2/lib/bundler.rb:114:in `require'
/home/vagrant/hoge2/config/application.rb:7:in `<main>'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:145:in `block in perform'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `tap'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands/server/server_command.rb:142:in `perform'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/command/base.rb:65:in `perform'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/command.rb:46:in `invoke'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/railties-5.2.0/lib/rails/commands.rb:18:in `<main>'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `block in require_with_bootsnap_lfi'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:65:in `register'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in `require_with_bootsnap_lfi'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/bootsnap-1.3.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `block in require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:249:in `load_dependency'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/activesupport-5.2.0/lib/active_support/dependencies.rb:283:in `require'
/home/vagrant/hoge2/bin/rails:9:in `<top (required)>'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/gems/2.5.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in `require'
/home/vagrant/.rbenv/versions/2.5.1/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:70:in `require'
/home/vagrant/hoge2/bin/spring:15:in `<top (required)>'
bin/rails:3:in `load'
bin/rails:3:in `<main>'
Bundler Error Backtrace:
vagrant@ubuntu-xenial:~/hoge2$

所感

サクッと導入できるだろと思っていたので予想外に手こずりました。一つずつ解消していくことで理解が深まったと思います。構築中に色々な操作をして、何やってるかとっちらかった際にvagrantが大活躍してくれました。気軽にubuntu環境を破棄してまた一から作業できるのは非常に楽でした。

1.の項目にVagrantの記事へのリンクを追加しましたので、是非Vagrantも使ってみてください。便利ですよ！