8.4. Support for ISO images

Procedure 8.1. To load an ISO image to an Image service data store

1. In the Image service, run the following command:

   $ glance image-create --name "rhel-server-7.0.iso" 
   --copy-from https://access.redhat.com/downloads/content/69/ver=/rhel---7/7.0/x86_64/product-downloads/rhel-server-7.0-x86_64-dvd.iso --is-public True --container-format bare --disk-format iso

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   In this command, rhel-server-7.0.iso is the name for the ISO image after it is loaded to the Image service, and rhel-server-7.0-x86_64-dvd.iso is the name of the source ISO image.
2. Optionally, to confirm the upload in Image service (glance), run this command:

   $ glance image-list

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Procedure 8.2. To boot an instance from an ISO image

1. Boot instance with ISO image using the following command:

   $ nova boot 
   --image rhel-server-7.0-x86_64-dvd.iso 
   --block-device source=blank,dest=volume,size=10,shutdown=preserve 
   --nic net-id=NETWORK_UUID --flavor 3 INSTANCE_NAME

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   In this command, rhel-server-7.0.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
   You will need Block Storage service and setting the parameter shutdown=preserve will preserve the volume even after the shutting down an instance.
2. After the instance is successfully launched, connect to the instance using remote console and follow the instructions to install the system as using ISO images on regular computers. When the installation is complete and system reboots, the instance prompts you to install the operating system, which implies your instance is not usable.

Procedure 8.3. To make an instance that was booted from an ISO image functional

1. Delete the instance you just created:

   $ nova delete INSTANCE_NAME

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

   $ cinder list

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   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:

   $ cinder upload-to-image VOLUME_UUID IMAGE_NAME

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   The VOLUME_UUID is the uuid 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 now use the new image to boot instances, the instance launched using this image will contain the system you just installed using the ISO image.