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.
Create the volume:
$ openstack volume create \ --size <SIZE_IN_GB> \ --bootable VOLUME_NAME
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.
Delete the instance using the following command.
$ openstack server delete INSTANCE_NAMEAfter you delete the instance, the system you have just installed using your ISO image remains, because the parameter
shutdown=preservewas 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.
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_VOLUMEis the UUID or a name of the volume that is attached to your ISO created instance, and theIMAGE_NAMEis the name that you give to your new image.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.
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