Yellow Bricks

by Duncan Epping

vSAN

Cool fling: vSAN Performance Monitor

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The vSAN team has just published a cool fling, the vSAN Performance Monitor. This performance monitor allows you to monitor multiple clusters at once, or as the team describes it:

The vSAN performance monitor is a monitoring and visualization tool based on vSAN Performance metrics. It will collect vSAN Performance and other metrics periodically from the clusters configured. The data collected is visualized in a more efficient and user-friendly way. The vSAN performance monitor comes with preconfigured dashboards which will help customers evaluate the performance of vSAN clusters, identify and diagnose problems, and understand current and future bottlenecks. The dashboards are heavily inspired by vSAN Observer.

It leverages Grafana for the frontend to visualize the metrics which are stored in an InfluxDB and collected by Telegraf. It is pretty simple to set up and it is made available for free via the Flings website. You can download an OVA and a User Manual to configure. Please note that it does require you to be on vSphere 6.0 or higher, but hopefully everyone is by now!

PS: Yes I know there was an issue with the upload of the OVA, I reported that with the dev team and it has been fixed since! Yes I tested it, and it does indeed import and boot correctly.

Runecast Analyzer 3.0!

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This week I had a brief conversation with the folks from Runecast. I have been following them since day 1 and they have made a big impression on me from the start. During the conversation the Runecast folks shared with me that Runecast Analyzer 3.0 was going to be announced today and they gave a quick overview and demo of what would be announced and included in 3.0. They also quickly went over the functionality that was added the past year, some things which really were well adopted by customers were HIPAA and DISA-STIG compliance feature. Also Horizon support and security auto-remediation capabilities. Another thing that customers really appreciated were the upgradability simulations (beta feature), where Runecast validates your environment against the HCL.

Stan (Runecast CEO) also mentioned that this year Runecast signed up a customer with over 10k hosts, as you can imagine a lot of the work in the past 12 months was focused on scalability and performance at that level of scale. But that is not what today’s announcement is about, today Runecast is announcing 3.0. In 3.0 there are some great enhancements to the platform again. First of all, production-ready HCL Analysis for vSphere and vSAN. On top of that, the ESXi Upgrade Simulation is now GA, and the log analysis has been improved. Runecast is also introducing a new H5 Client plugin-in with new widgets and a dark theme! Just look at it below, you have got to love the dark theme!

But as I mentioned, there’s more to it than just the H5 Client Plugin, the HCL Analysis and the Upgrade Simulation are two key features if you ask me. During the demo, Stan showed me the below screen, and I think that by itself makes it worth testing out Runecast. It simply shows you in one overview if your environment is compliant to the HCL or not, and if it is not compliant, which combination of firmware and driver you should be using to make it compliant. In this example, the driver should be upgraded to 2.0.42. A very useful feature if you ask me. Note that this will work for both vSphere and vSAN and all components needed to run either of these.

Just as useful is the Upgrade Simulation by the way, are you considering upgrading? Make sure to run this first so you know if you will end up in a supported state or not?! And some of you may say that VMware has similar capabilities in their product, but the Runecast appliance doesn’t need to be connected to the internet at all times. You can regularly update the dataset and run these compliancy and upgrade checks (or any of the other checks) regularly offline. Especially for customers where internet access is challenging (dark sites) this is very helpful.

All in all, some very useful updates to an already very useful solution.

vSAN Deep Dive book available in traditional chinese

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It took a while, but it is my pleasure to announce that the publisher DrMaster just published the Traditional Chinese version of “VMware vSAN 6.7 U1 Deep Dive”. For those who would like to get a copy of the book in Traditional Chinese, there are a couple of ways to pick it up:

I would like to thank the folks at DrMaster for taking on the effort of translating and publishing it!

Does a vSAN IO Limit impact resync traffic?

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A question just came in, and I figured other people may have the same question so I would share it. The question was if a vSAN IO limit would impact resync traffic or for instance SvMotion? In this case the customer defines limits within each policy to ensure VMs do not interfere with other VMs or excessively uses IO resources. Especially in cloud environments this can be useful, or when running production and test/dev on the same cluster. The concern, of course, was if this limit would impact for instance recovery times after a failure. Because you can imagine that a limit of 50 IOPS would be devastating when a VM (or multiple VMs) need to have objects resynced.

The answer is simple: no, the IO limit specified within a policy does not impact resync traffic (or SvMotion for that matter). It only applies to Guest IO to a VMDK, namespace or swap object. Which means that it is safe to set limits when it comes to recovery times.

Major vSAN Milestone: 20K customers – Celebrating by dropping the price of our book with 50%!

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I haven’t done one of these in a while, and as it is a question that comes up regularly during customer conversations I figured I would share a nice quote from the VMware earnings call. But before I do I want to thank every VMware employee, partner and customer who helped us reaching this major milestone. Sometimes customers ask how invested VMware is in storage, well very invested. Determined to remain the number 1 player in the hyperconverged and hybrid cloud world, and the below numbers show why!

vSAN license bookings grew over 50% year-over-year in Q1 with a total customer count growing to over 20,000. (seekingalpha.com)

Yes, that is 20,000 customers indeed. Actually, more than 20k customers. Which, again, is a great success and would not have been possible without the help from you guys. So to thank all of you Cormac and I have decided to lower the price of our book temporarily. For 1 week, today until Friday the 7th, we have lowered the price of the book by ~50%. This means that on the Amazon US store the book will be 20 USD for the paper version, and only 5 USD for the ebook. So pick it up! (It may take a day for the price change to reach some of the Amazon stores…) Please note, as an Amazon Associate I earn from below qualifying purchases.

<UPDATE>

It seems the price has been pushed down to all “local” amazon websites. So go to your local website and pick up the book for 50% of the previous price. Links to most localized websites here: