Class: Mist::LXCTemplate

Inherits:
Object
  • Object
show all
Defined in:
lib/mist/lxc_template.rb

Instance Method Summary collapse

Constructor Details

#initialize(distro, release) ⇒ LXCTemplate

Returns a new instance of LXCTemplate.



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# File 'lib/mist/lxc_template.rb', line 19

def initialize(distro, release)
  @distro = distro
  @release = release
  @template_name = "template-#{distro}-#{release}"

  @template = LXC::Container.new(@template_name)
end

Instance Method Details

#clone(name) ⇒ Object 



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# File 'lib/mist/lxc_template.rb', line 48

def clone(name)
  container = @template.clone(name, flags: LXC::LXC_CLONE_SNAPSHOT, bdev_type: 'overlayfs')
  container.wait(:stopped, 10)
  return container
rescue StandardError => ex
  Mist.logger.error "Failed to clone template #{@template_name}: #{ex}"
  raise
end

#create(config) ⇒ Object 



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# File 'lib/mist/lxc_template.rb', line 31

def create(config)
  Mist.logger.info "Creating #{@template_name}..."

  # Create our own user with a known key & strong random password
  username = config.username
  pubkey = config.ssh_public_key
  password = SecureRandom.urlsafe_base64(32)

  @template.create(@distro, nil, {}, 0, ['--release', @release,
                                         '--user', username,
                                         '--auth-key', pubkey,
                                         '--password', password])
rescue StandardError => ex
  Mist.logger.error "Failed to create template #{@template_name}: #{ex}"
  raise
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mist/lxc_template.rb', line 27

def exists?
  @template.defined?
end