nova/doc/source/user/launch-instance-using-ISO-image.rst

Launch an instance using ISO image

Boot an instance from an ISO image

OpenStack supports booting instances using ISO images. But before you make such instances functional, use the openstack server create command with the following parameters to boot an instance:

$ openstack server create --image ubuntu-14.04.2-server-amd64.iso \
  --nic net-id = NETWORK_UUID \
  --flavor 2 INSTANCE_NAME
+--------------------------------------+--------------------------------------------+
| Field                                | Value                                      |
+--------------------------------------+--------------------------------------------+
| OS-DCF:diskConfig                    | MANUAL                                     |
| OS-EXT-AZ:availability_zone          | nova                                       |
| OS-EXT-SRV-ATTR:host                 | -                                          |
| OS-EXT-SRV-ATTR:hypervisor_hostname  | -                                          |
| OS-EXT-SRV-ATTR:instance_name        | instance-00000004                          |
| OS-EXT-STS:power_state               | 0                                          |
| OS-EXT-STS:task_state                | scheduling                                 |
| OS-EXT-STS:vm_state                  | building                                   |
| OS-SRV-USG:launched_at               | -                                          |
| OS-SRV-USG:terminated_at             | -                                          |
| accessIPv4                           |                                            |
| accessIPv6                           |                                            |
| adminPass                            | ZaiYeC8iucgU                               |
| config_drive                         |                                            |
| created                              | 2015-06-01T16:34:50Z                       |
| flavor                               | m1.small (2)                               |
| hostId                               |                                            |
| id                                   | 1e1797f3-1662-49ff-ae8c-a77e82ee1571       |
| image                                | ubuntu-14.04.2-server-amd64.iso            |
| key_name                             | -                                          |
| metadata                             | {}                                         |
| name                                 | INSTANCE_NAME                              |
| os-extended-volumes:volumes_attached | []                                         |
| progress                             | 0                                          |
| security_groups                      | default                                    |
| status                               | BUILD                                      |
| tenant_id                            | ccef9e62b1e645df98728fb2b3076f27           |
| updated                              | 2014-05-09T16:34:51Z                       |
| user_id                              | fef060ae7bfd4024b3edb97dff59017a           |
+--------------------------------------+--------------------------------------------+

In this command, ubuntu-14.04.2-server-amd64.iso is the ISO image, and INSTANCE_NAME is the name of the new instance. NETWORK_UUID is a valid network id in your system.

Create a bootable volume for the instance to reside on after shutdown.

1. Create the volume:

   $ openstack volume create \
     --size <SIZE_IN_GB> \
     --bootable VOLUME_NAME

2. Attach the instance to the volume:

   $ openstack server add volume
     INSTANCE_NAME \
     VOLUME_NAME \
     --device /dev/vda

Note

You need the Block Storage service to preserve the instance after shutdown. The --block-device argument, used with the legacy nova boot, will not work with the OpenStack openstack server create command. Instead, the openstack volume create and openstack server add volume commands create persistent storage.

After the instance is successfully launched, connect to the instance using a remote console and follow the instructions to install the system as using ISO images on regular computers. When the installation is finished and system is rebooted, the instance asks you again to install the operating system, which means your instance is not usable. If you have problems with image creation, please check the Virtual Machine Image Guide for reference.

Make the instances booted from ISO image functional

Now complete the following steps to make your instances created using ISO image actually functional.

1. Delete the instance using the following command.

   $ openstack server delete INSTANCE_NAME

2. After you delete the instance, the system you have just installed using your ISO image remains, because the parameter shutdown=preserve was set, so run the following command.

   $ openstack volume list
   +--------------------------+-------------------------+-----------+------+-------------+
   | ID                       | Name                    | Status    | Size | Attached to |
   +--------------------------+-------------------------+-----------+------+-------------+
   | 8edd7c97-1276-47a5-9563- |dc01d873-d0f1-40b6-bfcc- | available |   10 |             |
   | 1025f4264e4f             | 26a8d955a1d9-blank-vol  |           |      |             |
   +--------------------------+-------------------------+-----------+------+-------------+

   You get a list with all the volumes in your system. In this list, you can find the volume that is attached to your ISO created instance, with the false bootable property.

3. Upload the volume to glance.

   $ openstack image create --volume SOURCE_VOLUME IMAGE_NAME
   $ openstack image list
   +-------------------+------------+--------+
   | ID                | Name       | Status |
   +-------------------+------------+--------+
   | 74303284-f802-... | IMAGE_NAME | active |
   +-------------------+------------+--------+

   The SOURCE_VOLUME is the UUID or a name of the volume that is attached to your ISO created instance, and the IMAGE_NAME is the name that you give to your new image.

4. After the image is successfully uploaded, you can use the new image to boot instances.

   The instances launched using this image contain the system that you have just installed using the ISO image.