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OpenStack Ocata : Add VM-Images
2017/03/12 |
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Add Virtual Machine images in Glance.
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| [1] | For example, Create a Virtual Machine image of ubuntu 16.04. |
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# 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
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| [3] | Add the virtual machine image to Glance. |
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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. |
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root@dlp ~(keystone)#
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
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 | +------------------+------------------------------------------------------+ |