OpenStack Flamingo : Add VM images to Glance2025/11/18

	Add Virtual Machine images to Glance.
[1]	For example, Create a Virtual Machine image of ubuntu 24.04.

# download the official disk image

root@dlp ~(keystone)#

wget http://cloud-images.ubuntu.com/releases/24.04/release/ubuntu-24.04-server-cloudimg-amd64.img

# if you'd like to change settings in the image, configure like follows
# mount disk image

root@dlp ~(keystone)#

modprobe nbd

root@dlp ~(keystone)#

qemu-nbd --connect=/dev/nbd0 ubuntu-24.04-server-cloudimg-amd64.img

root@dlp ~(keystone)#

mount /dev/nbd0p1 /mnt

root@dlp ~(keystone)#

vi /mnt/etc/cloud/cloud.cfg

# line 13 : add
# this is for only the case you want to allow SSH password authentication

ssh_pwauth: true

# line 96 : change
# only the case if you'd like to allow [ubuntu] user to use SSH password auth

system_info:
   # This will affect which distro class gets used
   distro: ubuntu
   # Default user name + that default users groups (if added/used)
   default_user:
     name: ubuntu
     lock_passwd: False
     gecos: Ubuntu

root@dlp ~(keystone)#

umount /mnt

root@dlp ~(keystone)#

qemu-nbd --disconnect /dev/nbd0p1

/dev/nbd0p1 disconnected

# add image to Glance

root@dlp ~(keystone)#

openstack image create "Ubuntu2404" --file ubuntu-24.04-server-cloudimg-amd64.img --disk-format qcow2 --container-format bare --public

+------------------+-----------------------------------------------------------+
| Field            | Value                                                     |
+------------------+-----------------------------------------------------------+
| checksum         | 05ca78afd3965b053328e5d2525fb66a                          |
| container_format | bare                                                      |
| created_at       | 2025-11-15T14:32:59Z                                      |
| disk_format      | qcow2                                                     |
| file             | /v2/images/c8be4fc8-a3f7-4859-9ae7-8b3843baa619/file      |
| id               | c8be4fc8-a3f7-4859-9ae7-8b3843baa619                      |
| min_disk         | 0                                                         |
| min_ram          | 0                                                         |
| name             | Ubuntu2404                                                |
| owner            | a74433b11b71428b949de54795e408e7                          |
| properties       | os_hash_algo='sha512', os_hash_value='6494e883c92780eef4b |
|                  | 77ceefe8a5ee50813747de383eb6f3f9a62fea0e7afa04d142a045fa6 |
|                  | a7ab837403f33b78e366a350d94009d2aecee77b58876107ddc6',    |
|                  | os_hidden='False', owner_specified.openstack.md5='',      |
|                  | owner_specified.openstack.object='images/Ubuntu2404',     |
|                  | owner_specified.openstack.sha256='', stores='fs'          |
| protected        | False                                                     |
| schema           | /v2/schemas/image                                         |
| size             | 626327552                                                 |
| status           | active                                                    |
| tags             |                                                           |
| updated_at       | 2025-11-15T14:33:01Z                                      |
| virtual_size     | 3758096384                                                |
| visibility       | public                                                    |
+------------------+-----------------------------------------------------------+

root@dlp ~(keystone)#

openstack image list

+--------------------------------------+------------+--------+
| ID                                   | Name       | Status |
+--------------------------------------+------------+--------+
| c8be4fc8-a3f7-4859-9ae7-8b3843baa619 | Ubuntu2404 | active |
+--------------------------------------+------------+--------+

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