Class: DanarchySys::OpenStack::Compute

Inherits:
Object
  • Object
show all
Defined in:
lib/danarchy_sys/openstack/compute.rb

Instance Method Summary collapse

Constructor Details

#initialize(provider) ⇒ Compute

Returns a new instance of Compute.



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# File 'lib/danarchy_sys/openstack/compute.rb', line 9

def initialize(provider)
  danarchysys_config = DanarchySys::ConfigManager::Config.new
  connection = danarchysys_config[:connections][provider.to_sym]
  @settings = danarchysys_config[:global_settings]
  @compute = Fog::Compute::OpenStack.new(connection)
  @instances = @compute.servers
  @images = @compute.images(filters: {'status' => ['ACTIVE']})
  @flavors = @compute.flavors
end

Instance Method Details

#fallback_ssh(ipv4, pemfile) ⇒ Object 



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# File 'lib/danarchy_sys/openstack/compute.rb', line 72

def fallback_ssh(ipv4, pemfile)
  users = %w[centos ubuntu debian fedora core]
  ssh, user = nil

  users.each do |username|
    print "Attempting connection as user: #{username} @ #{ipv4} => "
    connect = "/usr/bin/ssh -i '#{pemfile}' #{username}@#{ipv4}"
    ssh = system("#{connect} 'uptime' &>/dev/null")
    puts 'failed' if ssh ==false

    if ssh == true
      puts 'success'
      user = username
      break
    end
  end

  if ssh == false
    puts 'Unable to connect! User unknown or SSHd is not running on the instance.' 
    return ssh, nil
  else
    return [ssh, user]
  end
end

#flavors ⇒ Object 



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# File 'lib/danarchy_sys/openstack/compute.rb', line 31

def flavors
  ComputeFlavors.new(@compute, @flavors)
end

#images ⇒ Object 



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# File 'lib/danarchy_sys/openstack/compute.rb', line 27

def images
  ComputeImages.new(@compute, @images)
end

#instances ⇒ Object 



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# File 'lib/danarchy_sys/openstack/compute.rb', line 19

def instances
  ComputeInstances.new(@compute, @instances, @settings)
end

#keypairs ⇒ Object 



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# File 'lib/danarchy_sys/openstack/compute.rb', line 23

def keypairs
  ComputeKeypairs.new(@compute, @settings)
end

#secgroups ⇒ Object 



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# File 'lib/danarchy_sys/openstack/compute.rb', line 35

def secgroups
  ComputeSecgroups.new(@compute)
end

#ssh(instance_name) ⇒ Object 



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# File 'lib/danarchy_sys/openstack/compute.rb', line 39

def ssh(instance_name)
  (comp_inst, comp_kp, comp_img) = instances, keypairs, images
  instance = comp_inst.get_instance(instance_name)
  keypair_name = instance.key_name
  pemfile = comp_kp.pemfile_path(keypair_name)
  
  addrs = comp_inst.get_public_addresses(instance_name)
  ipv4 = addrs.grep(/\./).first
  ipv6 = addrs.grep(/:/).first

  # Define user by image_id
  image_id = instance.image['id']
  image = comp_img.get_image_by_id(image_id)

  ssh, user = nil
  if image == nil
    puts "Image not found for #{instance.name}! This instance needs to be rebuild with a current image."
    ssh, user = fallback_ssh(ipv4, pemfile)
  else
    user = 'ubuntu' if image.name =~ /ubuntu/i
    user = 'debian' if image.name =~ /debian/i
    user = 'centos' if image.name =~ /centos/i
    user = 'fedora' if image.name =~ /fedora/i
    user = 'core'   if image.name =~ /coreos/i
  end

  return if !user

  puts "Connecting as user: #{user} @ #{ipv4}"
  connect = "/usr/bin/ssh -i '#{pemfile}' #{user}@#{ipv4}"
  system(connect)
end