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by Duncan Epping

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Taking a break with VMware Take-3

Duncan Epping · Dec 3, 2019 ·

Over the past 6 years, my focus has very much been VMware vSAN. I started focussing on vSAN when we internally started working on Project Marvin in 2012, or EVO:RAIL as it was officially called, which then became Dell EMC VxRail. After a brief stop in the corporate Office of CTO I then joined the Office of CTO for Storage and Availability to focus solely on vSAN. I think it is fair to say that vSAN has been on top of mind for what feels forever. As such, I figured I needed a break, some time to think and talk about something different for a change, some time to learn new technologies, some time to work on something else.

Fortunately, VMware has this great concept called “Take 3”. Take 3 provides you the opportunity, if you have been with VMware for at least 5 years, to spend 3 months working on something else. No, I am not going to a cabin in the woods and think for 3 months. That would be nice, but that is not an option. Take 3 provides you the option to join projects, or teams, which have published an opening and are looking for help. I looked around the Take 3 portal to see what kind of opportunities were listed, and I found one that immediately caught my attention: Spatial Computing aka VR/AR/MR. (If you work for VMware and want to know more, or are interested simply go to the Take 3 portal, note that the Spatial Computing team has other T3 opportunities open.)

Some of you may recall the awesome demo Alan Renouf gave at VMworld during the keynote a few years ago. Well, that demo ultimately turned in to an incubation project which Alan is running together with my old professional services colleague Matt Coppinger. I had a conversation with Alan, Matt and their lead developer Arjun Dube and decided to jump on-board for 3 months. Note, jump on board for 3 months! This doesn’t mean I will be leaving the HCI BU or move away from vSAN. I will return for duty in March, but until then I will dive into virtual/augmented reality. I am aiming to update you folks occasionally, over the course of the next 3 months, on my experience of taking on this project. If you want to know more about what it is all about, listen to Alan on the VMTN Podcast below.

For now, I am looking forward to learning new technologies like AR, VR, GPUs etc. I am very thankful that VMware provides its employees with opportunities like these. The only thing I wonder is, why I waited 11 years before trying this. Ah well, time to put on my goggles and submerge in virtual reality!

NET::ERR_CERT_REVOKED driving you nuts after upgrading to OSX Catalina?

Duncan Epping · Nov 20, 2019 ·

NET::ERR_CERT_REVOKED driving you nuts after upgrading to OSX Catalina? Well it is driving me nuts for sure. I just found out that if you hit the NET::ERR_CERT_REVOKED error while accessing a page, in Chrome, you can simply continue clicking in the Chrome window and by typing the following: thisisunsafe. Of course you should only do this when you are sure you want to access the page as it basically is telling you that the certificate that doesn’t align with what Apple expects to receive. In my case, I use it for when I want to access our in-house developers cloud. Also, it appears that when you open the page in “developers mode” (go to More Tools >> Developer Tools” you can continue to the blocked page. Very useful to know!

VMworld Odyssey Lab Competition, sign up and win a Macbook!

Duncan Epping · Oct 29, 2019 ·

At VMworld US there was this really cool new initiative at the hands-on-labs. They had this competition called Odyssey where lab teams were competing against each other to complete labs successfully as fast as possible! These labs are on the topic of vSAN, vSphere, vRealize, NSX-T, Horizon and AppD. Not only was the gamification aspect of the HoL a very interesting and fun concept, but it also meant for the participant that they had to work in teams to complete the labs and had to communicate to get a good understanding of who is doing what. Adds a whole new aspect to the exercise, and at the same time made it even a bit more similar to how you manage your datacenters.

But why would you bother doing this? Well besides that it is an enormous amount of fun, believe I have witnessed the competition and everyone was extremely motivated yet at the same time had a huge amount of fun, you also can win a brand new shiny Macbook Pro. Yes you are reading that correctly, every participant of the winning team will get a Macbook Pro, and a nice Oculus Go for the second place. On top of that, for every single participant of the Odyssey challenge the HoL team has created these awesome jackets, which are a trophy to begin with if you ask me!

There are free slots available for teams that want to compete, you (and your team) can register using this link http://hol.pub/regodyssey, or on-site on Monday by going to the Hands-on Labs Area/ Odyssey Info desk.

VMworld Session Repeat – HCI1870BER – HA best practices with vSAN on Thursday 12:00!

Duncan Epping · Oct 19, 2019 ·

Unfortunately the rooms they allocated to my sessions filled up extremely fast. They have been able to move my sessions in to other rooms twice, but as HCI1870BER (HA best practices for vSAN) filled up again and there was no bigger room available the VMworld team decided to schedule a repeat for Thursday at 12:00, it is also filling up fast so make sure to register ASAP if you want to join the HA best practices session for vSAN. Note it is only a 30 minutes session, so it won’t be a full-on deep dive. Anyway. go to the following link to find all of my sessions and register. Before I forget, the Virtually Speaking Podcast session was a huge hit in the US, and I would also highly recommend signing up to that one!

https://my.vmworld.com/widget/vmware/vmworld19eu/eu19catalog?search=Epping

2 node direct connect vSAN and error “vSphere HA agent on this host could not reach isolation address”

Duncan Epping · Oct 7, 2019 ·

I’ve had this question over a dozen times now, so I figured I would add a quick pointer to my blog. What is causing the error “vSphere HA agent on this host could not reach isolation address” to pop up on a 2-node direct connect vSAN cluster? The answer is simple, when you have vSAN enabled HA uses the vSAN network for communication. When you have a 2-node Direct Connect the vSAN network is not connected to a switch and there are no other reachable IP addresses other than the IP addresses of the vSAN VMkernel interfaces.

When HA tries to test if the isolation address is reachable (the default gateway of the management interface) the ping will fail as a result. How you can solve this is simply by disabling the isolation response as described in this post here.

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About the Author

Duncan Epping is a Chief Technologist and Distinguished Engineering Architect at Broadcom. Besides writing on Yellow-Bricks, Duncan is the co-author of the vSAN Deep Dive and the vSphere Clustering Deep Dive book series. Duncan is also the host of the Unexplored Territory Podcast.

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