Module: EY::Metadata::SshAliasHelper

Included in:
ChefDna, EngineYardCloudApi
Defined in:
lib/engineyard-metadata/ssh_alias_helper.rb

Instance Method Summary collapse

Instance Method Details

#ssh_alias(counter, role_group, public_hostname) ⇒ Object

Used internally to generate a single ssh alias.



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# File 'lib/engineyard-metadata/ssh_alias_helper.rb', line 21

def ssh_alias(counter, role_group, public_hostname)
  id = case role_group
  when 'db_slaves', 'app_slaves', 'utilities'
    "#{role_group}-#{counter[role_group] += 1}"
  else
    role_group
  end
  %{Host #{environment_name}-#{id}
  Hostname #{public_hostname}
  User #{ssh_username}
  StrictHostKeyChecking no
}        
end

#ssh_aliases ⇒ Object

Aliases like ‘my_env-app_master’ or ‘my_env-utilities-5’ that go in .ssh/config

For example:

Host my_env-app_master
  Hostname ec2-111-111-111-111.compute-1.amazonaws.com
  User deploy
  StrictHostKeyChecking no



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# File 'lib/engineyard-metadata/ssh_alias_helper.rb', line 11

def ssh_aliases
  counter = Hash.new 0
  %w{ app_master db_master db_slaves app_slaves utilities }.map do |role_group|
    [send(role_group)].flatten.map do |public_hostname|
      ssh_alias counter, role_group, public_hostname
    end
  end.flatten.join("\n")
end