Created
September 19, 2015 17:23
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Capistrano config helper to retrieve automatically retrieve running instances to deploy
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# deploy.rb | |
def retrieve_instances(name_prefix) | |
require 'aws-sdk' | |
next_token = nil | |
dns_list = [] | |
begin | |
resp = Aws::EC2::Client.new.describe_instances( | |
filters: [{name: "tag:private:service", values: ['my-service']}], | |
next_token: next_token) | |
resp.reservations.each do |r| | |
r.instances.each do |i| | |
if i.tags.find { |t| t.key == 'Name' }.value.start_with?(name_prefix) | |
dns_list << i.network_interfaces.first.association.public_dns_name | |
end | |
end | |
end | |
end while (next_token = resp.next_token) | |
dns_list.sort.map { |d| "app@#{d}" } | |
end | |
set :ssh_options, { | |
forward_agent: true, | |
auth_methods: %w(publickey) | |
}.tap { |opt| | |
if ENV['CAPISTRANO_USE_SSH_PROXY'] | |
require 'net/ssh/proxy/command' | |
opt[:proxy] = Net::SSH::Proxy::Command.new('ssh -W %h:%p example.com') | |
end | |
} | |
# for each stages | |
hosts = retrieve_instances('app001') | |
role :app, hosts | |
role :web, hosts | |
role :db, [hosts.first] |
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