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ova

How to build a customizable Raspberry Pi OS Virtual Appliance (OVA)?

11/16/2020 by William Lam 6 Comments

After posting the instructions on how to install Raspberry Pi (rPI) OS into a Virtual Machine running on ESXi-Arm, I was already thinking about an easier consumption method that not only benefited VMware customers interested in running rPI OS as a VM but also the larger rPI OS development community. Just imagine, you can now easily deploy, build and test multiple rPI OS/application on a single physical rPI and get all the benefits of vSphere that many customers have enjoyed for the past two decades. 

My goal was to build an rPI OS OVA that would enable some basic guest customization such as networking and configuring the password for the default pi user. As you can see from the screenshot below, I was able to accomplish this with minimal trial/error and works fantastic!


I was initially planning to release the rPI OS OVA as a VMware Fling which can then be made available to the community. However, due challenges in the way rPI OS is distributed today via an image file and the inclusion of packages that makes it difficult for redistribution, I decided to forgo the VMware Fling route and simply publish the instructions with some supplemental scripts that can be used to produce the same rPI OS OVA that I have built for my own personal use.

It would have been great if this could be made available and if anyone from Raspberry Pi organization is reading this and is interested in hosting the download, I would be more than welcome to provide you with OVA file.

[Read more...] about How to build a customizable Raspberry Pi OS Virtual Appliance (OVA)?

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Filed Under: Automation, ESXi-Arm Tagged With: Arm, ova, ovf, Raspberry Pi, Raspberry Pi OS

Packer reference for PhotonOS Arm NFS Virtual Appliance using OVF properties for ESXi-Arm

10/21/2020 by William Lam 4 Comments

In case the title was not descriptive enough, I was curious if I could build an Arm Virtual Appliance (OVA) using OVF properties that would allow for all sorts of interesting guest customizations which I have blogged about before here, here, here and here using x86 PhotonOS as a reference implementation. My idea for this actually pre-dated the release of the ESXi on Arm Fling, but it was only until recently with support for VMware Tools for Photon OS Arm, was I able to finally piece together this solution.

It was also neat to see that I could build an Arm OVA using x86 tooling (Packer and OVFTool) which ran on my desktop and you simply needed an ESXi-Arm host. This really goes to show the level of compatibility from a management and vSphere API point of view that an ESXi-Arm host behaves just like a standard x86 ESXi host!

and successfully deployed maybe the “1st” OVA on #ESXionARM?

Just confirmed all guest customization via OVF properties executed correctly! Will be publishing reference Packer image in case you wish to build your own pic.twitter.com/PiSpceXtFF

— William Lam (@lamw) October 15, 2020

To demonstrate a more interesting use case than just basic network customization for the ?first? Arm OVA, I thought it would be useful to setup a simple NFS appliance that would take input from the user such the size of the exported volume (default 60GB) and then the name of the mount point. Upon first boot up, there is a guest customization script that would read in the OVF properties and configure the networking, OS password and NFS server configuration which you can certainly use to host your Arm VMs.

[Read more...] about Packer reference for PhotonOS Arm NFS Virtual Appliance using OVF properties for ESXi-Arm

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Filed Under: Automation, ESXi-Arm Tagged With: Arm, ova, ovf, Packer, Photon

Full OVA/OVF property support coming to Terraform provider for vSphere

06/11/2020 by William Lam 13 Comments

Terraform is one of the most popular Infrastructure as Code (IaC) tool out there today and it should come as no surprise there is Terraform provider for vSphere which many of our customers have been using. In fact, VMware just recently released a couple more new providers (here and here) supporting VMware Cloud on AWS and NSX-T solutions respectively.

Although I have used Terraform and the vSphere provider in the past, it has not been my tool of choice for automation as it still lacks a number of basic vSphere capabilities which I require on a regular basis. The most common one being the ability to deploy a Virtual Appliance (OVA/OVF) which has been my biggest barrier and I know this has been a highly requested feature from the community as well.

In early May of this year, I noticed that v1.18 of the vSphere provider finally added support for OVA/OVF deployment and I was pretty excited to give this a try and may even have been the first to kick the tires on this feature? Although OVA/OVF support was added, it looks like support for customizing OVF properties which is commonly included as part of an OVA/OVF would only possible if you are cloning from an existing imported OVA/OVF image. One of the most common use case is to import an OVF/OVA from either your local computer or from a URL and it looks like this use case was not possible.

I filed two Github issues, one for supporting OVF properties for initial OVA/OVF deployment and another regarding a bug I ran into when importing OVA/OVF from a remote URL. Just yesterday, I got the good news that my feature request has been completed and I was given an early drop of the vSphere provider to try out this feature. I may have also hinted to the Engineering team to use my popular Nested ESXi Appliance OVA as a reference test implementation as I knew this was something many customers will want to deploy 🙂

UPDATE (06/23/20) - Support for OVA/OVF properties is now available as part of 1.20 of the Terraform Provider for vSphere

[Read more...] about Full OVA/OVF property support coming to Terraform provider for vSphere

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Filed Under: Automation, vSphere Tagged With: ova, ovf, Terraform

Packer reference for building PhotonOS Virtual Appliance using OVF properties 

11/25/2019 by William Lam Leave a Comment

I was introduced to HashiCorp Packer several years back by Timo  Tsugliani, who if you are not following on Twitter, you are missing a TON of really useful nuggets which this guys shares both VMware/IT related and cool stuff. I am constantly learning about new things things from Timo and this guys is just a wealth of knowledge if you get the chance to work with him. At the time, I had played with Packer for a bit but did not have an actual use case for it, so I mostly forgot about it.

Fast forward a few years later and with recent projects like the vCenter Event Broker Appliance (VEBA) Fling, I have really spent time learning about Packer in greater depth and I now realize how powerful Packer is for building various artifacts including VMware-based templates that is not only easy but consistently from source control.  It took me awhile to get to the aha moment but now I use Packer for so many different things to help simplify my life.

With the recent open sourcing of our VEBA Fling which includes the use of PhotonOS and Packer, I was reminded of a blog series that I did earlier on how to build your own Linux and/or Windows Virtual Appliance using OVF properties (Part 1, Part 2 and Part 3). I realized it would have been useful to have an actual reference implementation on building a very simple PhotonOS Virtual Appliance that exercises some basic OVF properties so folks could quickly get started beyond the manual steps that were documented.  I was also motivated by a chat I had with Luc Dekens (Godfather of PowerCLI) last week on some of the Automation he was trying to with PhotonOS and I figured this might be something he and others could also benefit from.

[Read more...] about Packer reference for building PhotonOS Virtual Appliance using OVF properties 

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Filed Under: Automation, OVFTool Tagged With: guestinfo, linux, ova, ovf, Packer, Photon, vapp, virtual appliance

Building your own Virtual Appliances using OVF properties Part 3

03/19/2019 by William Lam 3 Comments

To conclude this three-part blog series, we are now going take a look at reference implementation for building your own Microsoft Windows Virtual Appliance (VA). Similar to the Linux VA build, the Windows OVA will also support the ability to customize basic networking configuration including the use of a static or DHCP option.

In addition, to demonstrate the endless possibilities for building your own VA, I have also included an option to automatically join a Microsoft Active Directory Domain as part of the OVA deployment, which is a fairly common operation after deploying a Windows-based system. In the example below, I am using Windows Server 2016 and PowerShell to perform all the required automation.

Step 1 - Create a new VM in vCenter Server and then install Window Server 2016 using the ISO. Once you have completed the OS installation, you may want to apply any patches or packages that you want included as part of your VA. Once that is done, go ahead and shut down the VM.

Step 2 - Select the VM in the vSphere Inventory and then click on Configure->vApp and then check the Enable vApp Options. Once enabled, select OVF environment for the IP allocation scheme. In the OVF Details tab, select VMware Tools for the OVF environment transport. (Optionally) You can specify some additional metadata including appliance name and URLs to help others who maybe consuming your VA once it has been exported to an OVF/OVA.

Step 3 - Next, add the following 9 OVF properties which will be used as input to configure networking within PhotonOS. Click Add and provide a Label, Key and optional Category.

Label Key Category
Hostname guestinfo.hostname Networking
IP Address guestinfo.ipaddress Networking
Netmask guestinfo.netmask Networking
Gateway guestinfo.gateway Networking
DNS Server guestinfo.dns Networking
DNS Domain guestinfo.domain Networking
AD Domain guestinfo.ad_domain Active Directory
AD Username guestinfo.ad_username Active Directory
AD Password guestinfo.ad_password Active Directory


Step 3 - Power back on the VM and once it is available on the network (assuming DHCP), download and copy the sample first boot script customize-guest.ps1 to C:\Users\Administrator\Desktop. This script is where all the magic happens and will process the OVF property input and then configure the network settings and if specified, it will also perform the Active Directory domain join. Right now it assumes the networking fields are optional, meaning if they are left blank, it will default the system to DHCP. If you provide all input properties, then it will go ahead and configure a static network address.

[Read more...] about Building your own Virtual Appliances using OVF properties Part 3

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Filed Under: Automation, OVFTool, vSphere Tagged With: active directory, guestinfo, ova, ovf, vapp, virtual appliance, windows

Building your own Virtual Appliances using OVF properties Part 2

02/19/2019 by William Lam 7 Comments

In the previous article, we reviewed the concepts and basic approach to building your own VMware Virtual Appliance (OVF/OVA). In Part 2, we are now going to take a look at a reference implementation for building a Linux VA using VMware PhotonOS. Although I am using PhotonOS as the guest, you can apply these same techniques to any other Linux distribution of your choice.

Step 1 - Create a new VM in vCenter Server and then install PhotonOS using the ISO format. Once you have completed the OS installation, you may want to apply any patches or packages that you want included as part of your VA. Once that is done, go ahead and shut down the VM.

Step 2 - Select the VM in the vSphere Inventory and then click on Configure->vApp and then check the Enable vApp Options. Once enabled, select OVF environment for the IP allocation scheme. In the OVF Details tab, select VMware Tools for the OVF environment transport. (Optionally) You can specify some additional metadata including appliance name and URLs to help others who maybe consuming your VA once it has been exported to an OVF/OVA.

Step 3 - Next, add the following 6 OVF properties which will be used as input to configure networking within PhotonOS. Click Add and provide a Label, Key and optional Category.

Label Key Category
Hostname guestinfo.hostname Networking
IP Address guestinfo.ipaddress Networking
Netmask guestinfo.netmask Networking
Gateway guestinfo.gateway Networking
DNS Server guestinfo.dns Networking
DNS Domain guestinfo.domain Networking


Step 4 - Power back on the VM and once it is available on the network (assuming DHCP), download and copy the sample first boot script rc.local to /etc/rc.d/rc.local. This script is where all the magic happens and will process the OVF property input and then configure the network settings. Right now it assumes these fields are optional, meaning if they left blank, it will default the system to DHCP. If you provide all input properties, then it will go ahead and configure a static network address.

[Read more...] about Building your own Virtual Appliances using OVF properties Part 2

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Filed Under: Automation, OVFTool, vSphere Tagged With: guestinfo, linux, ova, ovf, Photon, vapp, virtual appliance

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William Lam is a Senior Staff Solution Architect working in the VMware Cloud team within the Cloud Services Business Unit (CSBU) at VMware. He focuses on Automation, Integration and Operation for the VMware Cloud Software Defined Datacenters (SDDC)

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