Visio by DPTPB: Nutanix stencil G6 (Skylake) update

Block NX-3460-G6 IPMI

Nutanix seems to have done a soft launch for the next generation G6 hardware. I haven’t seen much marketing around this, but some information is already trickling down. For example HW specifications of G6 platform are already available at Nutanix website.

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First experiments with Nutanix AHV Turbo.

One of  the improvements that came along with Nutanix  AOS 5.5 was IO path optimization feature called “AHV Turbo”.

While the marketing department at Nutanix might have fallen asleep and woken up in 1990s with god-awful name like this, it is actually a GOOD feature.  Every time I hear word “Turbo” in IT related matters, it just reminds me of my first ever PC, a 286 with a “Turbo” button, which supposedly boosted performance by increasing  frequency from 8 Mhz to 12 Mhz, but did actually do diddly-squat 🙂

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Nutanix Acropolis hypervisor (AHV) vs Vmware vSphere hypervisor, AOS 5.5 edition

Third installation of this popular post comparing Nutanix Acropolis Hypervisor (AHV) and Vmware vSphere Hypervisor. This version is based on Nutanix AOS 5.5 version. Earlier versions of this post can found by clicking following links: 4.6 and 5.0.

There are still some use cases where using Vmware with Nutanix platform is required. But the list is getting smaller and smaller and there are less and less reasons to pay hypervisor licensing fees.

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Enabling Nutanix “Stargate” I/O statistics page access with allssh command, AOS 5.5 edition

Finally got my hands on AOS 5.5 and upgraded our lab Nutanix cluster to this version.

In my earlier post I described how to manipulate “iptables” rules to allow access to “Stargate” or “port 2009” pages. Stargate page contains lots of detailed information of I/O operations, more info in my earlier post. It seems that “iptables” configuration has changed in this version.

In versions prior AOS 5.5 “iptables” chain used was called “WORLDLIST”. In AOS 5.5 the name of the chain has changed to “MGMT_OPENFROMALL”. This requires changes in “iptables” commands used.

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Nutanix AHV: removing corrupted images from catalog

For some reason I managed to upload images into Nutanix AHV image catalog that were corrupted. This might be a browser related issue, I have to do some digging in order to find root cause for the problem.

One symptom of image corruption was that all the controls for the image were missing from the Prism GUI. The image was there, but no controls and there was no way to remove the corrupted image.


  • Login into one of the CVMs as nutanix user
  • Launch acropolis CLI: acli
  • List images: image.list
  • Delete images: image.delete

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Visio by DPTPB: Updated NetApp Sample Drawings + Bug Fixes

April 10, 2017 Visio by DPTPB update notes

Executive Summary

  • Minor update to DPTPB stencil collection
  • Updated all NetApp sample drawings to use V2 style switch and cable shapes
  • Additional Rubrik Sample Drawings
  • Few bug fixes

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Nutanix AHV + Brocade using native VLAN per port

Got one of our Nutanix demo boxes back from the field a while ago and set it up again in our demo lab.

Our lab network is VLAN segmented and the last time I did similar exercise, I had to set Acropolis Hypervisor (AHV) to send tagged frames also for management (CVM/Hypevisor) traffic. Instructions for this can be found from Virtual LANs for your Acropolis Hypervisor Virtual Machines. This includes modifying bridge “br0” on all AHV hosts , one AHV host at time. And setting each Controller Virtual Machine (CVM) to use VLAN tagging.

However in the post above Nutanix recommends CVM and Hypervisor traffic to use “untagged” (or native VLAN).

I was wondering whether you could use native VLAN setting for management traffic by modifying switch configuration and skip making changes to AHV hosts and CVMs. It would be much easier especially if you have many AHV hosts. Just log in to your switch and make changes in one place rather than logging into each and every AHV host / CVM separately.

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