Created
August 21, 2015 17:27
-
-
Save rlister/50c216cad73d9f41579c to your computer and use it in GitHub Desktop.
creates capistrano autoscaling_servers command to get instance list from AWS autoscaling groups
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
require 'aws-sdk-v1' | |
require 'capistrano/framework' | |
@autoscaling_groups = [] | |
def autoscaling_servers(opts = {}) | |
Array(opts[:regions]).each do |region| | |
AWS::AutoScaling.new(region: region).groups[opts[:group]].tap do |group| | |
@autoscaling_groups.push(group) | |
end.ec2_instances.each do |instance| | |
if instance.status == :running | |
server instance.ip_address, roles: opts[:roles], user: opts[:user] | |
end | |
end | |
end | |
end | |
def load_balancers(opts = {}) | |
Array(opts[:regions]).map do |region| | |
AWS::AutoScaling.new(region: region).groups[opts[:group]].load_balancer_names | |
end | |
end | |
namespace :aws do | |
desc 'ssh and run command on servers, e.g. cap staging "aws:servers[hostname]"' | |
task :ssh, :cmd do |task, args| | |
on roles(:all) do |server| | |
execute args[:cmd] | |
end | |
end | |
desc 'List server IPs' | |
task :servers do | |
on roles(:all) do |server| | |
puts "#{server}\n" | |
end | |
end | |
desc 'List load-balancers and instance health' | |
task :elb do | |
@autoscaling_groups.map(&:load_balancers).flatten.each do |lb| | |
puts "#{lb.name}:" | |
lb.instances.health.each do |h| | |
puts "#{h[:instance].public_ip_address}\t#{h.state}" | |
end | |
end | |
end | |
end | |
## helpful aliases | |
task :elb => 'aws:elb' | |
task :lb => 'aws:elb' |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
## example usage | |
require 'autoscaling' | |
set :stage, :production | |
set :application, 'web-prod@*' | |
set :branch, 'master' | |
autoscaling_servers group: 'web-prod', regions: %w[us-east-1], user: 'core', roles: %w[app web] |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment