Introduction

capistrano-ec2filter is a Capistrano plugin designed to simplify the task of deploying to infrastructure hosted on Amazon EC2. It allows to declare capistrano deploy servers filtered with ec2-describe-instances criteria (read more).

Add this line to your application's Gemfile:

gem 'capistrano-ec2filter'

And then execute:

$ bundle

Or install it yourself as:

$ gem install capistrano-ec2filter

Add this to the top of your deploy.rb:

require 'capistrano/ec2filter'

Then supply your AWS credentials with the environment variables (default):

# aws
export AWS_ACCESS_KEY_ID='...'
export AWS_SECRET_ACCESS_KEY='...'
# export AWS_EC2_ENDPOINT='...'

Or in your deploy.rb with capistrano variables:

set :aws_access_key_id, "..."
set :aws_secret_access_key, "..."
# set :aws_ec2_endpoint, "ec2.eu-west-1.amazonaws.com"

Define your servers:

ec2_filter("tag:application"=>"SuperApp", "tag:layer"=>"application") do |address|
  server address, :web, :app
end

ec2_filter("tag:application"=>"SuperApp", "tag:layer"=>"workers") do |address, instance|
  server address, :app, :jobs, :min_job_priority: 10
end

ec2_filter("placement-group-name"=>"matrix") do |address, instance|
  server address, :matrix, platform: instance.platform
end

instance - AWS::EC2::Instance from AWS SDK for Ruby

address - dns/ip address of instance = instance.dns_name || instance.ip_address || instance.private_ip_address

By default ec2_filter apply "instance-state-name" => "running" filter. You can overwrite this:

  ec2_filter("instance-state-name" => ["stopped", "stopping"], "tag:layer"=>"application") do |address|
    server address, :app, stopped: true
  end

Full list of supported EC2 filters: click here

1. Fork it ( http://github.com/rogal111/capistrano-ec2filter/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request