Module: TestLab::Container::Configuration

Included in:
TestLab::Container
Defined in:
lib/testlab/container/configuration.rb

Instance Method Summary collapse

Instance Method Details

#build_lxc_config(lxc_config) ⇒ Boolean

LXC Container Configuration

Builds the LXC container configuration data.

Returns:

  • (Boolean) —

    True if successful.



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# File 'lib/testlab/container/configuration.rb', line 25

def build_lxc_config(lxc_config)
  lxc_config.clear

  lxc_config['lxc.arch']    = self.arch
  lxc_config['lxc.utsname'] = self.fqdn

  self.mounts.nil? or self.mounts.flatten.compact.each do |mount|
    lxc_config['lxc.mount.entry'] = mount
  end

  unless self.aa_profile.nil?
    lxc_config['lxc.aa_profile'] = self.aa_profile
  end

  unless self.cap_drop.nil?
    lxc_config['lxc.cap.drop'] = [self.cap_drop].flatten.compact.map(&:downcase).join(' ')
  end

  lxc_config.networks = build_lxc_network_conf(self.interfaces)

  lxc_config.save

  true
end

#build_lxc_network_conf(interfaces) ⇒ Array<Hash>

LXC Network Configuration

Builds an array of hashes containing the lxc configuration options for our network interfaces.

Returns:

  • (Array<Hash>) —

    An array of hashes defining the containers interfaces for use in configuring LXC.



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# File 'lib/testlab/container/configuration.rb', line 57

def build_lxc_network_conf(interfaces)
  networks = Array.new

  interfaces.each do |interface|
    networks << Hash[
      'lxc.network.type'   => :veth,
      'lxc.network.flags'  => :up,
      'lxc.network.link'   => interface.network.bridge,
      'lxc.network.name'   => interface.name,
      'lxc.network.hwaddr' => interface.mac,
      'lxc.network.ipv4'   => "#{interface.ip}/#{interface.cidr} #{interface.netmask}"
    ]
    if (self.primary_interface == interface)
      networks.last.merge!('lxc.network.ipv4.gateway' => :auto)
    end
  end

  networks
end

#configure ⇒ Boolean

Configure the container

Configures the LXC subsystem for the container.

Returns:

  • (Boolean) —

    True if successful.



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# File 'lib/testlab/container/configuration.rb', line 11

def configure
  self.domain ||= self.node.domain
  self.arch   ||= detect_arch

  build_lxc_config(self.lxc.config)

  true
end