Lando Calrissian relies on Lobot to keep Cloud City afloat, and now you can rely on Lobot to keep your continuous integration server running in the cloud. Lobot is a gem that will help you spin-up, bootstrap, and install Jenkins for CI for your Rails app on Amazon EC2.
- rake tasks for starting a CI instance
- capistrano tasks for bootstrapping and deploying to an EC2 instance
- chef recipes for configuring a Centos server to run Jenkins and build Rails projects.
all you'll need to do is:
rails g lobot:install
edit config/ci.yml
rake ci:server_start
cap ci bootstrap
cap ci chef
Read on for an explanation of what each one of these steps does.
Add lobot to your Gemfile, in the development group:
gem "lobot", :group => :development
Lobot is a Rails 3 generator. Rails 2 can be made to work, but you will need to copy the template files into your project.
rails g lobot:install
Edit config/ci.yml
---
app_name: # a short name for your application
app_user: # the user created to run your CI process
git_location: # The location of your remote git repository which Jenkins will poll and pull from on changes.
basic_auth:
- username: # The username you will use to access the Jenkins web interface
password: # The password you will use to access the Jenkins web interface
credentials:
aws_access_key_id: # The Access Key for your Amazon AWS account
aws_secret_access_key: The Secret Access Key for your Amazon AWS account
provider: AWS # leave this one alone
server:
name: run 'rake ci:server_start to populate'
instance_id: run 'rake ci:server_start to populate'
build_command: ./cruise_build.sh
ec2_server_access:
key_pair_name: myapp_ci
id_rsa_path: ~/.ssh/id_rsa
id_rsa_for_github_access: |-
-----BEGIN RSA PRIVATE KEY-----
SSH KEY WITH ACCESS TO GITHUB GOES HERE
-----END RSA PRIVATE KEY-----
For security, you can add ci.yml to your .gitignore file and store a ci.yml.example without authentication credentials in your repository
Switch postgres to mysql, or add your own recipes for your own dependencies.
Launch an instance, allocate and associates an elastic IP and updates ci.yml:
rake ci:server_start
Bootstrap the instance using the boostrap_server.sh script generated by Lobot. The script instals ruby prerequisites, creates the app_user account, and installs RVM for that user:
cap ci bootstrap
Upload the contents of your chef/cookbooks/ directory, upload the soloistrc, and run chef:
cap ci chef
- fog
- capistrano
- capistrano-ext
- rvm (the gem - it configures capistrano to use RVM on the server)
Lobot is tested using rspec, generator_spec and cucumber. Cucumber provides a full integration test which can generate a rails application, push it to github, start a server and bring up CI for the generated project. You'll need a git repository(which should not have any code you care about) and an AWS account to run the spec. It costs about $0.50 and takes about half an hour. It does not clean up after itself, so be sure to terminate the server when you're done, or it will cost substantially more than $0.50. Use the secrets.yml.example to create a secrets.yml file with your accounts.
Lobot is in its infancy and we welcome pull requests. Pull requests should have test coverage for quick consideration.
Lobot is MIT Licensed and © Pivotal Labs. See LICENSE.txt for details.