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Step 13 deploy to heroku
Purpose: in this step we will see how to deploy you app to heroku's cloud computing platform.
cd ~/devel/apps
git clone git@github.com:opensas/play-demo.git
git checkout origin/13-deploy_to_heroku
Creating an account at heroku is really easy. Go to Heroku homepage and click on signup to create a new account and then enter a valid email address.
follow these instructions to add heroku tools on linux.
On ubuntu, execute the following command to add heroku's repository
sudo apt-add-repository 'deb http://toolbelt.herokuapp.com/ubuntu ./'
curl http://toolbelt.herokuapp.com/apt/release.key | sudo apt-key add -
sudo apt-get update
sudo apt-get install heroku-toolbelt
You might have to install curl first
sudo apt-get install curl
Now check that the client was successfully installed
heroku version
heroku-gem/2.8.0
heroku update
-----> Updating to latest client... done
At the command line, issue the following commands
heroku login
Enter your Heroku credentials.
Email: open@gmail.com
Password:
Here you have to enter your heroku password, do not confuse it with you private key password.
If you don't have any private/public key in ~/.ssh, it will create a new pair of keys
Could not find an existing public key.
Would you like to generate one? [Yn] Y
Generating new SSH public key.
Uploading ssh public key /home/sas/.ssh/id_rsa.pub
In order to work with heroku, first you have to create a git file.
You will have to install git on you development station. In ubuntu is as easy as
sudo apt-get install git. Have a look at github documentation for linux and windows instructions.
First of all, make sure you are at the root of your application. Then create a .gitignore file. Here you have a handy play .gitignore template
.gitignore
# Extracted from https://github.com/ulrich/macaron-factory/blob/master/.gitignore
# Ignore all dotfiles...
.*
# except for .gitignore
!.gitignore
# Ignore Play! working directory #
db
eclipse
log
logs
precompiled
tmp
test-result
eclipse
server.pid
Now run the app in production mode to test it
play run --%production
And then create the git repo and issue an initial commit
git init
git add .
git commit -m init
[master (root-commit) 93e6f9d] init
16 files changed, 391 insertions(+), 0 deletions(-)
create mode 100644 .gitignore
create mode 100644 app/controllers/Application.java
create mode 100644 app/views/Application/index.html
create mode 100644 app/views/errors/404.html
create mode 100644 app/views/errors/500.html
create mode 100644 app/views/main.html
create mode 100644 conf/application.conf
create mode 100644 conf/dependencies.yml
create mode 100644 conf/messages
create mode 100644 conf/routes
create mode 100644 public/images/favicon.png
create mode 100644 public/javascripts/jquery-1.5.2.min.js
create mode 100644 public/stylesheets/main.css
create mode 100644 test/Application.test.html
create mode 100644 test/ApplicationTest.java
create mode 100644 test/BasicTest.java
create mode 100644 test/data.yml
Now we'll create the new app on heroku
heroku create -s cedar
Creating afternoon-dusk-4670... done, stack is cedar
http://afternoon-dusk-4670.herokuapp.com/ | git@heroku.com:afternoon-dusk-4670.git
Git remote heroku added
Heroku will automatically pick a name for you application in this case it was afternoon-dusk-4670.
And will issue our initial deploy:
git push heroku master
That's it! A deploy to heroku is just a git push away...
When pushing to git, you'll have to enter you password to the private key created in ~/.ssh, do not confuse with your heroku key.
Always before deploying you have to commit your changes on the master branch
Now you can point your browser to http://afternoon-dusk-4670.herokuapp.com or just issue heroku open to let heroku do that for you.
It's highly probable that you won't like afternoon-dusk-4670, so navigate to https://api.heroku.com/myapps, click on afternoon-dusk-4670, and change it's name to play-demo-test. The following message will appear:
afternoon-dusk-4670 renamed to play-demo-test.
Existing git checkouts must be updated.
Follow these instructions:
git remote rm heroku
git remote add heroku git@heroku.com:play-demo-test.git
Now you can check you app at http://play-demo-test.herokuapp.com
We'll have to make a couple of changes so that our app con work flawlessly on heroku. For that purpose we'll first see a few commands that will let us deal with heroku.
heroku info
=== play-demo-test
Web URL: http://play-demo-test.herokuapp.com/
Git Repo: git@heroku.com:play-demo-test.git
Dynos: 0
Workers: 0
Repo size: 42M
Slug size: 26M
Stack: cedar
Data size: (empty)
Addons: Basic Logging, Basic Release Management, Shared Database 5MB
Owner: opensas@gmail.com
http://devcenter.heroku.com/articles/play
http://toolbelt.herokuapp.com/linux/readme
http://www.jamesward.com/2011/08/29/getting-started-with-play-framework-on-heroku
Now we are going to Step 14 - deploy to gae.