This post will guide you how to use cloud images to create virtual machines with KVM in Ubuntu Linux. How do I create a virtual machine using a cloud images with uvtool on Ubuntu Linux 16.04/14.04.
What is Uvtool?
Starting with 14.04 LTS, a tool called uvtool greatly facilitates the task of generating virtual machines (VM) using the cloud images. uvtool provides a simple mechanism to synchronize cloud-images locally and use them to create new VMs in minutes.
Create VM with Uvtool in Ubuntu
If you want to create a virtual machine with uvtool in Ubuntu Linux, just do the following steps:
#1 Install and Configure KVM
Type the following command to install and configure KVM on Ubuntu Linux:
$ sudo apt-get install qemu-kvm libvirt-bin ubuntu-vm-builder bridge-utils # kvm-ok # apt install virt-manager # virt-manager
# 2 Install uvtool Pakcage
Type the following command to install uvtool package:
# apt install uvtool -y
This command will install uvtool’s ain commands: uvt-simplestreams-libvirt and uvt-kvm.
#3 get the Ubuntu cloud image
You can execute uvt-simplestreams-libvirt to download the Ubuntu cloud image, type:
$ uvt-simplestreams-libvirt sync arch=amd64
This command will download all the Ubuntu cloud images from the office site.
And you can run the following command to check what has been downloaded:
$ uvt-simplestreams-libvirt query
Outputs:
$ uvt-simplestreams-libvirt query release=oneiric arch=amd64 label=release (20130509) release=precise arch=amd64 label=release (20160315) release=quantal arch=amd64 label=release (20140409) release=raring arch=amd64 label=release (20140111) release=saucy arch=amd64 label=release (20140709) release=trusty arch=amd64 label=release (20160314) release=utopic arch=amd64 label=release (20150723) release=vivid arch=amd64 label=release (20160203) release=wily arch=amd64 label=release (20160315) release=xenial arch=amd64 label=beta1 (20160223.1)
#4 Generate the SSH Keys
Type the following command:
# ssh-keygen
Outputs:
[root@devops ~]# ssh-keygen Generating public/private rsa key pair. Enter file in which to save the key (/root/.ssh/id_rsa): Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /root/.ssh/id_rsa. Your public key has been saved in /root/.ssh/id_rsa.pub. The key fingerprint is: SHA256:R25TT2+VUXIU7eCNRsCe55nIr2iY7eMr4F8TNFNUZDc root@devops The key's randomart image is: +---[RSA 2048]----+ | o++=EO| | ...o+=| | =..+.*.| | + +oo=.+| | S *. =.oo| | . o oo +. | | . . +o . | | . +.+o . | | ..==o.. | +----[SHA256]-----+
#5 create the VM using uvt-kvm
Type the following command:
# uvt-kvm create vm1
Get the list of running Ubuntu cloud image VMs
Type the following command:
# uvt-kvm list
Destroy VM
Type the following command:
# uvt-kvm destroy vm1