OpenStack Ocata : Add VM-Images2017/03/12

	Add Virtual Machine images in Glance.
[1]	For example, Create a Virtual Machine image of ubuntu 16.04.

# 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/ubuntu1604.img 10G

# install

root@dlp ~(keystone)#

virt-install \

--name ubuntu1604 \
--ram 2048 \
--disk path=/var/kvm/images/ubuntu1604.img,format=qcow2 \
--vcpus 2 \
--os-type linux \
--os-variant ubuntu16.04 \
--network network=default \
--graphics none \
--console pty,target_type=serial \
--location 'http://jp.archive.ubuntu.com/ubuntu/dists/xenial/main/installer-amd64/' \
--extra-args 'console=ttyS0,115200n8 serial'

Starting install...

# installation starts

# after finishing installation, back to KVM Host and shutdown VM

root@dlp ~(keystone)#

virsh shutdown ubuntu1604

# mount the disk image of the VM

root@dlp ~(keystone)#

guestmount -d ubuntu1604 -i /mnt

# enable getty@ttyS0.service

root@dlp ~(keystone)#

ln -s /mnt/lib/systemd/system/getty@.service /mnt/etc/systemd/system/getty.target.wants/getty@ttyS0.service

# unmount and start

root@dlp ~(keystone)#

umount /mnt

root@dlp ~(keystone)#

virsh start ubuntu1604 --console

# configure some settings for openstack instance on VM

root@ubuntu:~#

apt-get -y install ssh cloud-init linux-virtual pollinate

root@ubuntu:~#

vi /etc/default/grub

# line 11: change like follows

GRUB_DEFAULT=0
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="

console=tty1 console=ttyS0

"
GRUB_CMDLINE_LINUX=""

# line 35,36: comment out

GRUB_TERMINAL=serial

GRUB_SERIAL_COMMAND="serial --unit=0 --speed=115200 --word=8 --parity=no --stopp=1"

root@ubuntu:~#

update-grub

root@ubuntu:~#

vi /etc/cloud/cloud.cfg

# near line 13: add (if you'd like to allow SSH password authentication to login)

ssh_pwauth: true

# line 92: change (if you'd like to allow [ubuntu] user's SSH password auth)

default_user:
name: ubuntu
lock_passwd:

False

root@ubuntu:~#

vi /etc/network/interfaces

# omment out except loopback interface

# The primary network interface

auto ens2

iface ens2 inet dhcp

root@ubuntu:~#

systemctl enable serial-getty@ttyS0.service

# shutdown to finish settings

root@ubuntu:~#

shutdown -h now

[3]	Add the virtual machine image to Glance.

root@dlp ~(keystone)#

openstack image create "Ubuntu1604" --file /var/kvm/images/ubuntu1604.img --disk-format qcow2 --container-format bare --public

+------------------+------------------------------------------------------+
| Field            | Value                                                |
+------------------+------------------------------------------------------+
| checksum         | 94c84b6752dde538d106bca8db012a80                     |
| container_format | bare                                                 |
| created_at       | 2017-03-10T05:49:41Z                                 |
| disk_format      | qcow2                                                |
| file             | /v2/images/3e88d891-e286-426b-ad6b-4c97920d16be/file |
| id               | 3e88d891-e286-426b-ad6b-4c97920d16be                 |
| min_disk         | 0                                                    |
| min_ram          | 0                                                    |
| name             | Ubuntu1604                                           |
| owner            | 763d3fd7411e4b42982d4d7022f1e335                     |
| protected        | False                                                |
| schema           | /v2/schemas/image                                    |
| size             | 2246115328                                           |
| status           | active                                               |
| tags             |                                                      |
| updated_at       | 2017-03-10T05:49:56Z                                 |
| virtual_size     | None                                                 |
| visibility       | public                                               |
+------------------+------------------------------------------------------+

root@dlp ~(keystone)#

openstack image list

+--------------------------------------+------------+--------+
| ID                                   | Name       | Status |
+--------------------------------------+------------+--------+
| 3e88d891-e286-426b-ad6b-4c97920d16be | Ubuntu1604 | 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/16.04/release/ubuntu-16.04-server-cloudimg-amd64-disk1.img -P /var/kvm/images

root@dlp ~(keystone)#

openstack image create "Ubuntu1604" --file /var/kvm/images/ubuntu-16.04-server-cloudimg-amd64-disk1.img --disk-format qcow2 --container-format bare --public

+------------------+------------------------------------------------------+
| Field            | Value                                                |
+------------------+------------------------------------------------------+
| checksum         | fc5ad26274fcc42cfa32d97308613432                     |
| container_format | bare                                                 |
| created_at       | 2017-02-24T01:44:21Z                                 |
| disk_format      | qcow2                                                |
| file             | /v2/images/3113fc28-fa1f-4221-909e-a4fc5bdb8d6a/file |
| id               | 3113fc28-fa1f-4221-909e-a4fc5bdb8d6a                 |
| min_disk         | 0                                                    |
| min_ram          | 0                                                    |
| name             | Ubuntu1604                                           |
| owner            | 3424019a88f34894b22058d6e15a8d35                     |
| protected        | False                                                |
| schema           | /v2/schemas/image                                    |
| size             | 324141056                                            |
| status           | active                                               |
| tags             |                                                      |
| updated_at       | 2017-02-24T01:44:23Z                                 |
| virtual_size     | None                                                 |
| visibility       | public                                               |
+------------------+------------------------------------------------------+

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