(Last Updated On: June 26, 2019)

In this tutorial, we’re going to look at how to add VM images to Openstack Glance image service. I assume you already have a running Openstack setup, and glance service runs on the controller node.

What is Openstack image service?

Openstack glance enables users to discover, register, and retrieve virtual machine images. The default location these images are stored is /var/lib/glance/images/ with its backend being a file.

Openstack image service also offers a REST API that enables you to query virtual machine image metadata and retrieve an actual image. You can store virtual machine images made available through the Image service in a variety of locations, from simple file systems to object-storage systems like OpenStack Object Storage.

Obtaining Glance images?

The simplest way to obtain a virtual machine image that works with OpenStack is to download one that someone else has already created. Most of the images contain the cloud-init package to support the SSH key pair and user data injection.

I’ll show you how to add images for various operating systems by downloading what other people already made. Of course, you can create your own images, but it is faster to obtain ready-made images.

Default Login credentials

Below are the default login usernames for instances created from the images added shortly.

Debian: debian
Fedora: fedora
Ubuntu: ubuntu
RHEL: cloud-user
CentOS: centos
coreos: core
Arch Linux: arch
Gentoo: gentoo
OpenSUSE: root
Cirros:
    username: cirros
    Password: cubswin:)

Examples:

1. Adding Cirros Cloud image to Glance

$ wget http://download.cirros-cloud.net/0.4.0/cirros-0.4.0-x86_64-disk.img
$ openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file cirros-0.4.0-x86_64-disk.img \
    Cirros-0.4.0-x86_64

2. Adding Fedora Cloud Image to Openstack

$ wget https://download.fedoraproject.org/pub/fedora/linux/releases/30/Cloud/x86_64/images/Fedora-Cloud-Base-30-1.2.x86_64.qcow2

$ openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file  Fedora-Cloud-Base-30-1.2.x86_64.qcow2 \
    Fedora-30-x86_64

3. Adding CentOS 7 Cloud Image to Openstack

$ wget http://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.qcow2

$ openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file CentOS-7-x86_64-GenericCloud.qcow2 \
    CentOS-7-x86_64

3. Adding Ubuntu 18.04 Cloud Image to Openstack

$ wget http://cloud-images.ubuntu.com/bionic/current/bionic-server-cloudimg-amd64.img

$ openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file bionic-server-cloudimg-amd64.img \
    Ubuntu-16.04-x86_64

4. Adding Debian 9 Cloud Image to Openstack

$ wget http://cdimage.debian.org/cdimage/openstack/current-9/debian-9-openstack-amd64.qcow2
$ openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file debian-9-openstack-amd64.qcow2 \
    Debian-9-amd64

5. Adding CoreOS Cloud Image to Openstack

$ wget https://stable.release.core-os.net/amd64-usr/current/coreos_production_openstack_image.img.bz2
$ bunzip2 coreos_production_openstack_image.img.bz2
$ openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file coreos_production_openstack_image.img \
    CoreOS-x86_64

6. Adding Arch Linux Cloud Image to Openstack

$ wget https://linuximages.de/openstack/arch/arch-openstack-LATEST-image-bootstrap.qcow2
$ openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file arch-openstack-LATEST-image-bootstrap.qcow2 \
    Arch-Linux-x86_64

7. Adding Gentoo Cloud Image to Openstack

$ wget https://linuximages.de/openstack/gentoo/gentoo-openstack-LATEST-image-bootstrap.qcow2
$ openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file gentoo-openstack-LATEST-image-bootstrap.qcow2 \
    Gentoo-Linux-x86_64

8. Adding Windows Server 2012 image

Download image from https://cloudbase.it/windows-cloud-images/#download

$ gunzip -cd windows_server_2012_r2_standard_eval_kvm_20170321.qcow2.gz
$ openstack image create \
    --container-format bare \
    --disk-format qcow2 \
    --file windows_server_2012_r2_standard_eval_kvm_20170321.qcow2 \
    Windows-Server-2012-R2-Std

Check list of images available in Glance.

$ openstack image list
+--------------------------------------+---------------------+--------+
| ID                                   | Name                | Status |
+--------------------------------------+---------------------+--------+
| 0850ee38-1bdf-4379-9c69-0cf73e8b7c65 | Arch-Linux-x86_64   | active |
| e98445b6-f14f-488c-a18a-1f66c6de15c7 | CentOS-7-x86_64     | active |
| 7b4b616e-71f3-4419-9777-7aee66fad62c | Cirros-0.4.0-x86_64 | active |
| 98bbd9e6-abbc-45fa-ac95-b91b7b18ba0a | Debian-9-amd64      | active |
| 113b90b6-4e1e-4715-b9ab-456c191a82b3 | Fedora-30-x86_64    | active |
| 06c17e8a-0d4c-428a-89b5-b0eb2489f403 | Ubuntu-16.04-x86_64 | active |
+--------------------------------------+---------------------+--------+

Setting image options options

Now let’s set all images to be publicly visible and protect them from accidental deletion.

IMAGE_IDS=`openstack image list | egrep '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}' -o`
for i in ${IMAGE_IDS[@]}; do
    openstack image set --public $i
    openstack image set --protected $i
done

Confirm from Horizon Dashboard by going to Project > Compute > Images. You should notice Protected flag is set to yes for all images and Visibility set to Public as well.

adding images to openstack glance

Reference:

OpenStack Documentation

Also check: