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clarify that there are cloud providers that support nested virtualization

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Matthew Hooker 2017-12-12 21:00:18 -08:00
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website/source/guides/packer-on-cicd/build-virtualbox-image.html.md
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@ -10,10 +10,12 @@ This guide walks through the process of building a VirtualBox image using
Packer on a new TeamCity Agent. Before getting started you should have access
to a TeamCity Server.
The Packer VirtualBox builder requires access to VirtualBox, which needs to run
on a bare-metal machine, as virtualization is generally not supported on cloud
instances. This is also true for the [VMWare](/docs/builders/vmware.html) and
the [QEMU](/docs/builders/qemu.html) Packer builders.
The Packer VirtualBox builder requires access to VirtualBox. Virtualization is
not universally available on cloud instances, so we recommend you run these
builds on either a bare metal server, or cloud instances which support nested
virtualization, such as Azure or GCP. This is also true for the
[VMWare](/docs/builders/vmware.html) and the [QEMU](/docs/builders/qemu.html)
Packer builders.
We will use Chef's [Bento boxes](https://github.com/chef/bento) to provision an
Ubuntu image on VirtualBox. For this example, we will use the repository
@ -21,13 +23,12 @@ directly, but you may also fork it for the same results.
## 1. Provision a Bare-metal Machine
The Packer VirtualBox builder requires running on bare-metal (hardware). If you
do not have access to a bare-metal machine, we recommend using
[Packet.net](https://www.packet.net/) to obtain a new machine. If you are
a first time user of Packet.net, the Packet.net team has provided HashiCorp the
coupon code `hash25` which you can use for $25 off to test out this guide. You
can use a `baremetal_0` server type for testing, but for regular use, the
`baremetal_1` instance may be a better option.
For the purposes of this example, we will run on a bare-metal instance from
[Packet.net](https://www.packet.net/). If you are a first time user of
Packet.net, the Packet.net team has provided HashiCorp the coupon code `hash25`
which you can use for $25 off to test out this guide. You can use
a `baremetal_0` server type for testing, but for regular use, the `baremetal_1`
instance may be a better option.
There is also a [Packet
Provider](https://www.terraform.io/docs/providers/packet/index.html) in