We use Hashicorp Packer to create and maintain Windows Server and Linux VM 
templates. We then use those templates for server provisioning. We also use 
packer to maintain AWS AMIs. With packer we can ensure we offer the same 
source OS configurations across AWS and VMware - same OS families and 
versions and base configurations. For automated server provisioning this is 
key because it lets your provisioning workflow make assumptions across all 
provisioning landscapes as to what is the starting point after the template 
or AMI is launched. We bake into our templates and AMIs a service account 
that lets our provisioning process get into the new systems and do 
privileged tasks. Windows and Linux obviously look different, but all Linux 
families / versions have the same base config, and all Windows versions 
have the same base config.

Packer has three stages - builder, provisioner, post-processor. The 
provisioner stage creates the base image from an ISO (for VMware) or from 
an AMI (for AWS). The provisioner stage logs into that base image and gets 
it up to the expected base configuration using ansible (and some PowerShell 
for Windows). The post-processor takes the "provisioned" (configured) 
images and converts them to VMware templates or new AWS AMIs.

I highly recommend learning packer and using it. Learning how to do Debian 
Preseed or Ubuntu Cloud-Init profiles is a real mess but can be done. Red 
Hat Kickstart profiles are much easier to build. Windows Server requires 
learning how to do unattended answer files. All of this is required to 
master the packer build stage.

A great place to see all this as an example is Jeff Geerling's Packer Boxes 
project on GitHub.
https://github.com/geerlingguy/packer-boxes

This was the basis for our Image Factory project that maintains our base 
VMware templates and AWS AMIs.

The vmare_guest module can easily create VMs from templates. Use packer to 
maintain the templates. Use Ansible to deploy servers sourcing those 
templates.
---
Walter Rowe, Chief
Infrastructure Services
NIST Office of Information Systems Management
US Department of Commerce

On Monday, July 18, 2022 at 10:58:43 AM UTC-4 Antony Stone wrote:

> On Monday 18 July 2022 at 16:51:25, Abhijeet Kasurde wrote:
>
> > You want to check -
> > 
> > 
> https://medium.com/@AbhijeetKasurde/automating-centos-7-installation-using-
> > ansible-and-kickstart-483807a3774c
> > 
> https://medium.com/8042/ansible-automating-windows-server-2012-r2-installa
> > tion-in-vcenter-227577f5917c
>
> Also see https://wiki.debian.org/DebianInstaller/Preseed and 
> https://www.debian.org/releases/stable/amd64/apb.en.html if you happen to 
> be 
> installing Debian or Devuan. It probably works for Ubuntu as well (but 
> I've 
> not tried that).
>
>
> Antony.
>
> -- 
> The Royal Society for the Prevention of Cruelty to Animals was formed in 
> 1824.
> The National Society for the Prevention of Cruelty to Children was not 
> formed 
> until 1884.
> That says something about the British.
>
> Please reply to the list;
> please *don't* CC me.
>

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