Puppet vKick Module

Define KVM virtual machines and the guest's OS setup

Combine KVM definition and Kickstart OS setup in a single module declaration.
Create virtual machines in a centralized way with full OS setup from your Puppet master.
Simply define which Linux flavor to install by pointing to the right HTTP mirror.
Can be faster than bootstrapping an image, especially if you want an up to date OS.

Examples

node 'host1.domain.com' {
  include vkick::host
}

You can modify the libvirt image path or bridge device name by assigning those parameters to the vkick:host class in your node classification.

You'll find 3 main groups to define a virtual machine: network, partitioning and packages. The simplest definition will only need network settings and will create a CentOS 6.5 VM with 2 vcpu, 2GB of RAM and a 40GB disk image:

node 'host1.domain.com' {
  include vkick::host

  vkick::guest { 'instance1.domain.com':
       root_intial_passwd => '$5$random_salt$cZtPYSe77B7/NJHzUSHr1AEOMnQQpIbLWPmIboI2nG3',
       ipaddress          => "173.255.197.131",
       subnetmask         => "255.255.255.0",
       broadcast          => "173.255.197.255",
       gateway            => "173.255.197.254"
 }
}

To define a bigger Fedora 20 VM with a LAMP stack, download and install PuppetLabs repo meta then finally install the Puppet client:

node 'host1.domain.com' {
  include vkick::host
  
  vkick::guest { 'instance2.domain.com':
   	vcpu		              => 4,
   	ram		                => 16384,
   	disk_size             => 120,
   	os_variant            => 'fedora16',
   	http_mirror           => 'http://fedora.mirrors.ovh.net/linux/releases/20/Fedora/x86_64/os/',
   	http_updates          => 'http://fr2.rpmfind.net/linux/fedora/linux/updates/20/x86_64/',
   	timezone	            => 'Europe/London',
   	packages              => ['httpd', 'mariadb-server', 'MySQL-python']
   	packages_to_download  => ['http://yum.puppetlabs.com/puppetlabs-release-pc1-fedora-20.noarch.rpm'],
   	packages_post_install => ['puppet-agent'],
    pass_algorithm        => 'sha512',
    root_intial_passwd    => '$6$random_salt$TNrwyNX0/aJaE8Ee/.dchDiGLxINLMiRTX.DX0SpGzYXE9MDgCq8qYsEBqBe5pPUKtPTUxoTXJyIgdsWQ1Csp0',
    ipaddress             => "173.255.197.131",
    subnetmask            => "255.255.255.0",
    broadcast             => "173.255.197.255",
    gateway               => "173.255.197.254"
  }
}

Adapt HTTP mirrors to a server nearby and serving the right version for your CPU architecture. The CPU architecture is inherited from, the host's CPU, there for only the number of vcpu/thread is left to assign. Without specifying a partition scheme, the follow settings will be used:

An ext4 /boot partition of 512MB.
2GB of swap.
10GB for an ext4 / partition as part of a LVM volume.
4GB for an ext4 /home partition as part of a LVM volume.
All remaining space of the specified disk size will be used for a /var ext4 partition as part of a LVM volume.

Password encryption:

To improve security, especially when Puppet configuration is hosted in a repository off-premise, the root password injected via Kickstart with this module should be encrypted. To obtain the hashed version of your password, you can use these commands:

sha256:

python -c 'import crypt; print crypt.crypt("5hould8eReplaced", "$5$random_salt")'

sha512:

python -c 'import crypt; print crypt.crypt("5hould8eReplaced", "$6$random_salt")'

Hiera

If you want to define VMs via Hiera, add the following in you site.pp:

$vkick_guests = hiera_hash('vkick_guests', {})
create_resources('::vkick::guest', $vkick_guests)

Then in your Hiera configuration for a node:

vkick_guests:
  'instance1.domain.com':
    root_intial_passwd: '$5$random_salt$cZtPYSe77B7/NJHzUSHr1AEOMnQQpIbLWPmIboI2nG3'
    ipaddress: '173.255.197.131'
    subnetmask: '255.255.255.0'
    broadcast: '173.255.197.255'
    gateway: '173.255.197.254'
    packages:
      - 'httpd'
      - 'mariadb-server'
      - 'MySQL-python'

Requirements

A working network bridge defined on the host.
A CPU with support for virtualization via KVM.
An access to the internet from the guest's IP or a local HTTP mirror.
A version of python-virtinst equal or superior to 0.500.4-1 to support injecting Kickstart definition without local ISO or floppy installation image.

Known Limitations

Only works for guest OS supporting Kickstart files such as RedHat, CentOS, Fedora and Ubuntu (would need custom Kickstart template to, among other things, use apt-get rather than yum).
Requires a guest setup with static IP, either public or private if a gateway or local mirror is available.
Doesn't create other user accounts than root on a guest.

tux-o-matic/puppet-vkick