virtuallyGhetto

William Lam

Application Discovery in vSphere with VMware Tools 11

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The holidays are just around the corner and hopefully everyone is taking some time off to spend with their families, I know I certainly will! As I start to wind down 2019, I like to use this time catch up on things in my backlog that I was not able to get to in the year. This can range from blog posts that I still need to read, to session recordings that I have attempted to watch but have only made it half way to random notes on topics to potentially investigate in.

When VMware Tools 11 was released back in September, I had noticed an interesting feature that was delivered as part of that release:

Added appInfo to publish information about running applications inside the guest.

I thought this might be something worth looking at when I found some time. One of the nice benefits of having VMware Tools de-coupled from a specific vSphere release is that VMware can now ship additional GuestOS capabilities to customers without requiring them to upgrade the entire vSphere infrastructure, which brings us to the new appInfo feature.

AppInfo is a new plugin within VMware Tools that enables the collection of the "raw" running application processes within a GuestOS. Once enabled, this information is then published into new VM guestinfo property called guestinfo.appinfo which can then be consumed by standard vSphere Automation Tools. This has been one of the most common VM Automation questions I have received over the years from customers and we can now provide additional insights to our administrators on the underlying applications and its version running within a Virtual Machine. 

By default, this new AppInfo capability is enabled by default after installing VMware Tools 11 and is supported with both Windows and Linux GuestOS. If you wish to disable this feature, you can find the instructions here. Below is a Windows Server 2016 which I have Active Directory among other applications running which has the appInfo collection enabled.


Once enabled, the default collection period runs every 30 minutes which can be changed following the instructions mentioned earlier. To make this easier to consume, I wrote a quick PowerCLI function called Get-VMApplicationInfo.ps1 which expects a VM object and then retrieves the appInfo details. As part of the output, the results also includes the last discovered time along with an update counter which can be used to track the number of times the collection has ran since enabling.

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RSS feed for VMware release notes

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Staying up to date with the latest VMware product releases can be a challenge and with something like VMware Cloud on AWS, which is delivered as a service, it can be even more tricky as new updates are constantly being made available. Historically, there has not been a consistent method for how customers can get notified of new releases and this has also come up from our VMware Cloud on AWS customers.

We posed the challenge to our Information Exchange (documentation) team to see how we can help our VMware Cloud on AWS customers and the team came back with an initial implementation of providing a standard RSS feed which you can now find at the upper right hand corner of the VMware Cloud on AWS release notes page. You can subscribe using your favorite RSS reader, I personally use Feedly and when a new release of the SDDC and/or service, you will get notified via your RSS reader. For those that want a different delivery mechanism such as email for example, you can use the free If This, Than That (IFTTT) service which I also personally use and setup an email notification or any other type of notification that IFTTT supports.


Although this initial requirement was driven by the VMware Cloud on AWS product team, we definitely wanted to see this capability delivered across all VMware products and services which is what the team has done as well. When you navigate to a specific product and/or service release notes, you will now see the additional RSS feed that you can subscribe to.

Here are just a few of the popular RSS feeds that I know folks will want to subscribe to. For a complete list of all VMware product/services, please take a look here.

I think this be a great first step in helping our customers easily get notified of new releases, so that can start reviewing the release notes and start planning. I know many of you have also asked for other methods such as programmatic access to release notes updates or even having a specific changelog for things like our APIs. If folks have any feedback in this area, feel free to leave a comment and I will be more than happy to share this with our documentation team.

Configuring Github Actions self-hosted runners on PhotonOS 

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Ever since Github announced Github Actions, which is now generally available for everyone, I have been a huge fan of the service. I even shared a blog post earlier this year on how you can easily incorporate automated application deployment to a vSphere or VMware Cloud on AWS based environment, which can automatically be triggered by native developer workflows directly from Github. This can be a really powerful and enabling capability for your developers, especially when taking advantage of an on-demand solution like VMware Cloud on AWS.
Right before VMworld Barcelona, I saw a tweet from the Github Twitter account announcing another cool feature which is the ability to run your own self-hosted runners. By default, when you use Github Actions, the runners are hosted by Github and when a Docker Container is launched, it is running within their infrastructure. During the beta, I had noticed some inconsistencies on how long it would take my Github Actions to kickoff which is usually within a minute or so but I have seen cases where it has gone up 5 to 10 minutes.

I was told that this was an infrastructure issue, but it did raise an interesting question in my mind on SLAs. As far as I know, nothing is publicly documented and Github also mentioned they did not have an SLA for the service. If you need a more predictable experience, you now have the option of running the "runners" in your own infrastructure which can be on-premises environment or even a public cloud where you have available compute capacity.

I finally got a chance to explore this capability and of course, I had to figure out how to get this working with our very own VMware PhotonOS. With a bit of trial and error, I was able to get everything working. In fact, I was able to run my Github runner directly in my VMware Cloud on AWS environment which can be quite useful for customers with development and CI/CD-based workloads and being able to leverage Github Actions.

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Listing all Events for vCenter Server

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I had a conversation with one of our VMware Cloud on AWS field leaders a couple of weeks ago at reInvent on his initial experience with the vCenter Event Broker Appliance (VEBA) Fling. There were lots great feedback but one thing that stood out to me which looks to have been a barrier to getting started was being able to figure out a specific vCenter Event and its respective identifier. Although the list of "default" vCenter Events are documented in the vSphere API, it is definitely not the first place most folks would go to look nor is it very intuitive to browse.

To be honest, this is not a unique ask for VEBA. I have also seen this requests come up from customers who are automating vCenter Alarms, which can also be based off of vCenter Events and the same question has come up on before. One challenge with such a request is that the number and the types of vCenter Events will vary from customer to customer depending on the number of 2nd and 3rd party solutions deployed, not to mention it will also vary from version to version. In addition, as a customer, you can also publish your own custom Events into vCenter Server which makes this difficult to provide a single list that would cover all possible scenarios.

Ultimately, this ask is completely valid and I started to look at the vSphere API to see if there was something that could help. It did not take look before I stumbled onto the EventDescription which is part of the EventManager, which provides a nice registry for all currently registered vCenter Events. Time for some Automation 🙂

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Configure NSX-T Enhanced Data path / Network Stack (ENS) for Nested ESXi

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After publishing my Running Nested ESXi, NSX-V or NSX-T on top of NSX-T article which actually turned out to be quite popular, I received an interesting question on whether ENS for NSX-T could also be configured within a Nested ESXi deployment? I was a little familiar with ENS, which I will explain in a second. However, I was not completely sure about the benefits of running ENS in a Nested environment.

With the help from my friend Frank Escaros-Buechsel, who actually works in our NFV group at VMware. Frank helped validate the instructions but he also provided some additional insights on why this could be useful in a lab setup for verifying configuration and behaviors when additional tuning maybe required. If you are NOT running NFV-based workloads, ENS is not something you need to configure when running NSX-T using Nested ESXi.

So what is ENS?  Enhanced Network Stack (ENS) also referred to as Enhanced Data Path is an NSX-T capability which was first introduced with NSX-T 2.3. ENS is specifically designed for Network Function Virtualization (NFV) workloads that require a high performance data path. Such workloads include Telco, 5G and IoT based deployments where improved packet throughput is critical for the responsiveness of these applications.

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Packer reference for building PhotonOS Virtual Appliance using OVF properties 

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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.

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