Hack Your Design!

Ruby on Rails を Google App Engine 上で動かしてみる

[速報]Google App EngineがRubyとNode.jsのサポートを発表。GCP Next 2016 - Publickey

ということでRuby on RailsをGoogle App Engine 上で動かしてみました。手順は公式ドキュメント・ How to run Hello World - Ruby — Google Cloud Platform を参考に進めていきます。


  • gcloud コマンドが使えること(Google Cloud SDKに含まれています)
  • Google Cloud Platformにログイン済みであり、今回のデプロイ先となるプロジェクトが作成済みであること



GoogleCloudPlatform/getting-started-ruby のHello World Appを今回は動かしますのでまずはプロジェクトをクローンします。

$ git clone https://github.com/GoogleCloudPlatform/getting-started-ruby.git
$ cd 1-hello-world

まずは通常のRuby on Railsアプリと同じくbundle installしてRailsサーバーを立てましょう。

$ bundle install
$ rails server

これでlocalhost:3000でデプロイされるHello World Appが見れました。

gcloud セットアップ

gcloud を使って行きますがいくつか事前の設定が必要あります。

# 初期化
$ gcloud init

# Googleログインする
$ gcloud auth login

# 今回作成したプロジェクトIDをセット
$ gcloud config set project {your-project-id}

これでapp deployコマンドが動作しました。

$ gcloud preview app deploy

デプロイされたあとは AppEngine Console のバージョンの一覧に出てきます。



Beginning deployment...
If this is your first deployment, this may take a while...done.

Using Ruby 2.2.4 as requested in the .ruby-version file
Verifying that Managed VMs are enabled and ready.
Building and pushing image for module [default]
Started cloud build [789f0d61-dc0a-4994-8292-02a5ff9f65de].
To see logs in the Cloud Console: https://console.developers.google.com/logs?project=your-project-id&service=cloudbuild.googleapis.com&key1=789f0d61-dc0a-4994-8292-02a5ff9f65de&logName=projects/your-project-id/logs/cloudbuild
--------------------------------- REMOTE BUILD OUTPUT ----------------------------------
starting build "789f0d61-dc0a-4994-8292-02a5ff9f65de"

Fetching storage object: gs://staging.your-project-id.appspot.com/your-project-id.default.20160326t100408#1458954328349000
Copying gs://staging.your-project-id.appspot.com/your-project-id.default.20160326t100408#1458954328349000...
Downloading file:///tmp/source-archive.tgz:                      13.32 KiB/13.32 KiB
Using default tag: latest
latest: Pulling from cloud-builders/dockerizer
bf61d14f65db: Pulling fs layer
3ea15286bc1a: Pulling fs layer
515285067dbf: Pulling fs layer
5e89b839ecfa: Pulling fs layer
e63e5abf57a3: Pulling fs layer
ec858f8c1767: Pulling fs layer
51d0afdd2ff8: Pulling fs layer
415319aa0c90: Pulling fs layer
51d0afdd2ff8: Verifying Checksum
51d0afdd2ff8: Download complete
415319aa0c90: Verifying Checksum
415319aa0c90: Download complete
5e89b839ecfa: Verifying Checksum
5e89b839ecfa: Download complete
3ea15286bc1a: Verifying Checksum
3ea15286bc1a: Download complete
515285067dbf: Verifying Checksum
515285067dbf: Download complete
e63e5abf57a3: Verifying Checksum
e63e5abf57a3: Download complete
ec858f8c1767: Verifying Checksum
ec858f8c1767: Download complete
bf61d14f65db: Verifying Checksum
bf61d14f65db: Download complete
bf61d14f65db: Pull complete
3ea15286bc1a: Pull complete
515285067dbf: Pull complete
5e89b839ecfa: Pull complete
e63e5abf57a3: Pull complete
ec858f8c1767: Pull complete
51d0afdd2ff8: Pull complete
415319aa0c90: Pull complete
Digest: sha256:b80a8cc7ed504307717c7530e795b0c2dea1ff99957806e0785ae831309084ae
Status: Downloaded newer image for gcr.io/cloud-builders/dockerizer:latest
 Version:      1.9.1
 API version:  1.21
 Go version:   go1.4.3
 Git commit:   a34a1d5
 Built:        Fri Nov 20 17:56:04 UTC 2015
 OS/Arch:      linux/amd64

 Version:      1.9.1
 API version:  1.21
 Go version:   go1.4.2
 Git commit:   a34a1d5
 Built:        Fri Nov 20 13:12:04 UTC 2015
 OS/Arch:      linux/amd64
Sending build context to Docker daemon 90.62 kB
Step 1 : FROM gcr.io/google_appengine/ruby
 ---> 3e6d0d6d0575
Step 2 : RUN cd /rbenv/plugins/ruby-build &&     git pull &&     rbenv install -s 2.2.4 &&     rbenv global 2.2.4 &&     gem install -q --no-rdoc --no-ri bundler --version 1.11.2 &&     gem install -q --no-rdoc --no-ri foreman --version 0.78.0
 ---> Running in 451faee44d37
Already up-to-date.
Successfully installed bundler-1.11.2
1 gem installed
Successfully installed foreman-0.78.0
1 gem installed
 ---> 5da2526068cb
Removing intermediate container 451faee44d37
Step 3 : ENV RBENV_VERSION 2.2.4
 ---> Running in 1e6f8d74782b
 ---> 416110028d7d
Removing intermediate container 1e6f8d74782b
Step 4 : COPY Gemfile Gemfile.lock /app/
 ---> 0ab134d54690
Removing intermediate container 7337fb40c45b
Step 5 : RUN bundle install && rbenv rehash
 ---> Running in 0c258ea5a1be
Don't run Bundler as root. Bundler can ask for sudo if it is needed, and
installing your bundle as root will break this application for all non-root
users on this machine.
Fetching gem metadata from https://rubygems.org/...........
Fetching version metadata from https://rubygems.org/...
Fetching dependency metadata from https://rubygems.org/..
Using rake 10.4.2
Installing i18n 0.7.0
Installing json 1.8.3 with native extensions
Installing minitest 5.7.0
Installing thread_safe 0.3.5
Installing builder 3.2.2
Installing erubis 2.7.0
Installing mini_portile 0.6.2
Installing rack 1.6.4
Installing mime-types 2.6.1
Installing arel 6.0.0
Installing cliver 0.3.2
Installing diff-lcs 1.2.5
Installing multi_json 1.11.2
Installing websocket-extensions 0.1.2
Using bundler 1.11.2
Using thor 0.19.1
Installing rspec-support 3.3.0
Installing tzinfo 1.2.2
Installing nokogiri with native extensions
Installing rack-test 0.6.3
Installing sprockets 3.2.0
Installing mail 2.6.3
Installing websocket-driver 0.6.3 with native extensions
Installing rspec-core 3.3.1
Installing rspec-expectations 3.3.0
Installing rspec-mocks 3.3.1
Installing activesupport 4.2.2
Installing tzinfo-data 1.2015.6
Installing loofah 2.0.2
Installing xpath 2.0.0
Installing rails-deprecated_sanitizer 1.0.3
Installing globalid 0.3.5
Installing activemodel 4.2.2
Installing rails-html-sanitizer 1.0.2
Installing capybara 2.4.4
Installing rails-dom-testing 1.0.6
Installing activejob 4.2.2
Installing activerecord 4.2.2
Installing poltergeist 1.8.1
Installing actionview 4.2.2
Installing actionpack 4.2.2
Installing actionmailer 4.2.2
Installing railties 4.2.2
Installing sprockets-rails 2.3.2
Installing rspec-rails 3.3.2
Installing rails 4.2.2
Bundle complete! 6 Gemfile dependencies, 47 gems now installed.
Use `bundle show [gemname]` to see where a bundled gem is installed.
 ---> 9fde5c5bec0c
Removing intermediate container 0c258ea5a1be
Step 6 : COPY . /app/
 ---> 05eb1e2b6b90
Removing intermediate container e885ebd8251c
Step 7 : ENTRYPOINT bundle exec rackup -p 8080 -E production config.ru
 ---> Running in 1b616e80361d
 ---> 0695731649da
Removing intermediate container 1b616e80361d
Successfully built 0695731649da
The push refers to a repository [appengine.gcr.io/gcloud/your-project-id.default.20160326t100408] (len: 1)
Sending image list
Pushing repository appengine.gcr.io/gcloud/your-project-id.default.20160326t100408 (1 tags)
Image 3bc7cdb36864 already pushed, skipping
Image 4bfc20f0ed66 already pushed, skipping
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5da2526068cb: Pushing
5da2526068cb: Image successfully pushed
416110028d7d: Pushing
416110028d7d: Image successfully pushed
0ab134d54690: Pushing
0ab134d54690: Image successfully pushed
9fde5c5bec0c: Pushing
9fde5c5bec0c: Image successfully pushed
05eb1e2b6b90: Pushing
05eb1e2b6b90: Image successfully pushed
0695731649da: Pushing
0695731649da: Image successfully pushed
Pushing tag for rev [0695731649da] on {https://appengine.gcr.io/v1/repositories/gcloud/your-project-id.default.20160326t100408/tags/latest}

Updating module [default]...done.
Deployed module [default] to [https://your-project-id.appspot.com]



# [START runtime]
runtime: ruby
vm: true
entrypoint: bundle exec rackup -p 8080 -E production config.ru
# [END runtime]

# [START resources]
  cpu: .5
  memory_gb: 1.3
  disk_size_gb: 10
# [END resources]

# [START scaling]
  min_num_instances: 1
  max_num_instances: 5
  cool_down_period_sec: 60
    target_utilization: 0.5
# [END scaling]

runtimeの設定がrubyプロジェクトに共通の設定でresources, scalingは環境に合わせて適宜チューニングしてください。デフォルトの状態としてはミニマルな設定になっているようです。


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