CentOS 7
Sponsored Link

OpenStack Rocky : Add VM Images
2018/08/31
 
Add Virtual Machine images in Glance.
For example on here, create and add CentOS 7 virtual machine image.
[1]
Install KVM HyperVisor, refer to here.
It's unnecessarry to set Bridge networking on the section [2] of the link.
[2] Create CentOS 7 image on Glance Host.
# create a directory for disk image

[root@dlp ~(keystone)]#
mkdir -p /var/kvm/images
# create a disk image

[root@dlp ~(keystone)]#
qemu-img create -f qcow2 /var/kvm/images/centos7.img 10G
# install

[root@dlp ~(keystone)]#
virt-install \
--name centos7 \
--ram 2048 \
--disk path=/var/kvm/images/centos7.img,format=qcow2 \
--vcpus 2 \
--os-type linux \
--os-variant rhel7 \
--graphics none \
--console pty,target_type=serial \
--location 'http://ftp.iij.ad.jp/pub/linux/centos/7/os/x86_64/' \
--extra-args 'console=ttyS0,115200n8 serial'
Starting install...    
# installation starts
[2]
After installation, change settings in virtual machine like follows and shutdown it.
* Delete or comment out the line [HWADDR] and [UUID] in [/etc/sysconfig/network-scripts/ifcfg-eth0]
* Set [dhcp] for [BOOTPROTO] in [/etc/sysconfig/network-scripts/ifcfg-eth0]
* Install [cloud-init] package and enable [cloud-init] service, and also add a user whose name is [centos]
[3] Add the virtual image to Glance.
[root@dlp ~(keystone)]#
openstack image create "CentOS7" --file /var/kvm/images/centos7.img --disk-format qcow2 --container-format bare --public

+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field            | Value                                                                                                                                                                                      |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| checksum         | f6516ab092ecbe691ac21ebc186b6253                                                                                                                                                           |
| container_format | bare                                                                                                                                                                                       |
| created_at       | 2018-08-31T01:57:06Z                                                                                                                                                                       |
| disk_format      | qcow2                                                                                                                                                                                      |
| file             | /v2/images/05269b20-9625-46b6-8377-3893c70906bd/file                                                                                                                                       |
| id               | 05269b20-9625-46b6-8377-3893c70906bd                                                                                                                                                       |
| min_disk         | 0                                                                                                                                                                                          |
| min_ram          | 0                                                                                                                                                                                          |
| name             | CentOS7                                                                                                                                                                                    |
| owner            | 2cb4b9d73bcc46449f711794506c3faf                                                                                                                                                           |
| properties       | os_hash_algo='sha512', os_hash_value='3da7d126bea073906fbd6c3b8080d87f47dbb22ddfdfbd4196ec8a3c9d2cf857050a4178e42c35ce83dc73a1470df88f12e7c499eb337130a792b1e0111bf90d', os_hidden='False' |
| protected        | False                                                                                                                                                                                      |
| schema           | /v2/schemas/image                                                                                                                                                                          |
| size             | 1421869056                                                                                                                                                                                 |
| status           | active                                                                                                                                                                                     |
| tags             |                                                                                                                                                                                            |
| updated_at       | 2018-08-31T01:57:15Z                                                                                                                                                                       |
| virtual_size     | None                                                                                                                                                                                       |
| visibility       | public                                                                                                                                                                                     |
+------------------+--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

[root@dlp ~(keystone)]#
openstack image list

+--------------------------------------+---------+--------+
| ID                                   | Name    | Status |
+--------------------------------------+---------+--------+
| 05269b20-9625-46b6-8377-3893c70906bd | CentOS7 | active |
+--------------------------------------+---------+--------+
[4] By the way, if you got an image from internet, it's OK to simply add it like follows.
[root@dlp ~(keystone)]#
wget http://cloud-images.ubuntu.com/releases/18.04/release/ubuntu-18.04-server-cloudimg-amd64.img -P /var/kvm/images
[root@dlp ~(keystone)]#
openstack image create "Ubuntu1804" --file /var/kvm/images/ubuntu-18.04-server-cloudimg-amd64.img --disk-format qcow2 --container-format bare --public

+------------------+------------------------------------------------------+
| Field            | Value                                                |
+------------------+------------------------------------------------------+
| checksum         | d7912161a35c8e8cc384589601751dd8                     |
| container_format | bare                                                 |
| created_at       | 2018-08-31T04:46:27Z                                 |
| disk_format      | qcow2                                                |
| file             | /v2/images/7e22891e-9d01-49b4-9eb2-4b02dbab051c/file |
| id               | 7e22891e-9d01-49b4-9eb2-4b02dbab051c                 |
| min_disk         | 0                                                    |
| min_ram          | 0                                                    |
| name             | Ubuntu1804                                           |
| owner            | 12d80218a35e4c62aa0403e92b5b649a                     |
| protected        | False                                                |
| schema           | /v2/schemas/image                                    |
| size             | 336461824                                            |
| status           | active                                               |
| tags             |                                                      |
| updated_at       | 2018-08-31T04:46:29Z                                 |
| virtual_size     | None                                                 |
| visibility       | public                                               |
+------------------+------------------------------------------------------+
Matched Content
 
Tweet