Team Leader - Nutanix Technology Champion - Nutanix NTC Storyteller

Julien DUMUR
Infrastructure in a Nutshell

A question that comes up regularly: “what are the default passwords on my cluster?”

Here is an exhaustive list of passwords for a Nutanix cluster after installation, as well as those for some additional components:

AHV hosts passwords:

  • “root” account: nutanix/4u
  • “nutanix” account: nutanix/4u
  • “admin” account: nutanix/4u

CVMs passwords:

  • “admin” account: nutanix/4u
  • “nutanix” account: nutanix/4u

Prism Central password:

  • “admin” account: Nutanix/4u
  • “nutanix” account: nutanix/4u

Nutanix Move password:

  • “admin” account: nutanix/4u

Nutanix Files password:

  • “nutanix” account: nutanix/4u

I invite you to read this article to change your cluster passwords: https://juliendumur.fr/nutanix-ahv-operations-post-install-partie-1/

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After re-iping a Prism Central at a customer’s location, the menu to switch between application sections no longer worked at all and generated an error message when hovering over it:

By inspecting the log file “Styx.log” : /home/docker/domain-manager/log/styx.log, I was able to find this type of log lines:

V3ApiError: ACCESS_DENIED | No permission to access the resource.;

In the “Athena.INFO” file I also found JWT errors that indicated certificate parsing problems:

ERROR 2024-11-18T17:49:01,154Z Thread-1 athena.authentication_connectors.CertificateAuthenticator.getX509Certificate:309 certificate parsing exception {}. Please ensure the certificate is valid

To fix the error, I had to regenerate a new certificate using the following command:

nutanix@PCVM:~$ncli ssl-certificate ssl-certificate-generate

Once the regeneration process was complete, my Prism Central menu started working perfectly fine again.

Official Documentation: https://portal.nutanix.com/page/documents/kbs/details?targetId=kA07V0000004UtNSAU

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When deploying Prism Central on my Nutanix CE 2.1 cluster, I was faced with an error message that prevented registering my cluster on Prism Central…

Indeed, once all the parameters are filled in during validation, I get the error message “Cluster has dual stack enabled. Cannot register to a PC.” :

This error message is related to the presence of IPv6 in parallel with IPv4 on the cluster, but a solution exists and it resides in the following command:

manage_ipv6 unconfigure; manage_ipv6 disable

You must answer “Y” to the question “Proceed to remove above IPv6 configuration?” in order to validate the process:

nutanix@NTNX-436d2f97-A-CVM:192.168.84.200:~$ manage_ipv6 unconfigure; manage_ipv6 disable
[INFO] Initializing script… done
[INFO] Current IPv6 configuration on cluster: {
"svmips": {
"192.168.84.200": null
},
"hostips": {
"192.168.84.199": null
},
"prefixlen": null,
"gateway": null
}
[INFO] Note: This operation will restart the following services: ['CerebroService', 'StargateService']
Proceed to remove above IPv6 configuration? [Y/N]: Y
[+] CVM and Hypervisor IPv6 addresses unconfigured
[+] Cleared IPv6 configuration from Zeus
[+] CVM and hypervisor firewall rules updated
[+] Necessary services have been restarted
[INFO] Marked Ergon task 4673fda3-92da-4efe-59f5-1dd3fc51a6cd as kSucceeded
[INFO] Action unconfigure completed successfully
Script output logged to /home/nutanix/data/logs/manage_ipv6.out
[INFO] Initializing script… done
[+] IPv6 disabled on CVMs and Hypervisors
[INFO] Marked Ergon task 9cdfcb37-436a-479f-4d7a-08ef69e266b0 as kSucceeded
[INFO] Action disable completed successfully
Script output logged to /home/nutanix/data/logs/manage_ipv6.out
nutanix@NTNX-436d2f97-A-CVM:192.168.84.200:~$

Once the procedure is completed, the Prism Central registration goes smoothly:

If you still have issue, Goerge bring us another way to disable dual stack :

Add all these lines in /etc/sysctl.conf:

net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.all.disable_policy = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.default.disable_policy = 1
net.ipv6.conf.eth0.disable_ipv6 = 1
net.ipv6.conf.eth0.disable_policy = 1
net.ipv6.conf.eth1.disable_ipv6 = 1
net.ipv6.conf.eth1.disable_policy = 1
net.ipv6.conf.eth2.disable_ipv6 = 1
net.ipv6.conf.eth2.disable_policy = 1
net.ipv6.conf.lo.disable_ipv6 = 1
net.ipv6.conf.lo.disable_policy = 1

Run :

sudo sysctl -p 

And rolling reboot of all the CVMs.

Then run manage_ipv6 unconfigure :

manage_ipv6 unconfigure; manage_ipv6 disable
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I am proud to announce that I have been selected to be part of the Nutanix Technology Champions program for the year 2025.

This is the 2nd consecutive year that I have the honor of being selected by Angelo, the program manager. He and his team have been great this year, especially at .NEXT in Barcelona or NTC Tech Connect in San José, a huge thank you to them!

You can find the full list of Nutanix Technology Champions 2025 here: https://next.nutanix.com/community-blog-154/introducing-the-nutanix-technology-champions-for-2025-a-celebration-of-excellence-and-innovation-43855

Congratulations to all the program’s elected officials, I can’t wait to see what Angelo has in store for us this new year.

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We’ve been waiting for them for several days, they’ve finally arrived! I’m obviously talking about AOS 7 and AHV 10 which were made available this Wednesday, December 4 by Nutanix.

What’s new in AOS 7

Among the new features in AOS 7 you will be able to find:

  • Disaster Recovery for Flow
  • Cloud KMS support (if you missed the OVHcloud announcements, it’s here)
  • Increased the amount of memory supported by nodes up to 8TB
  • Centralized password management in Prism Central for AHV system accounts
  • Nutanix API v4

More than 150 bugs have been fixed with 28 bugs still being worked on.

For the full release note, click here: https://portal.nutanix.com/page/documents/details?targetId=Release-Notes-AOS-v7_0:Release-Notes-AOS-v7_0

What’s new in AHV 10

In AHV 10, here are some features that are coming:

  • New format for version naming
  • PCIe Passthrough for Guest VMs
  • Support for NVidia A2 Tensor Core and H100 NVL graphics cards
  • Support for configuring the boot device order from the aCLI

At the same time, more than 40 known bugs have been fixed. Be careful, however, 13 are still identified.

For the full release note, it’s here: https://portal.nutanix.com/page/documents/details?targetId=Release-Notes-AHV-v10_0:Release-Notes-AHV-v10_0

To your updates!

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nutanix university

Nutanix, through Nutanix University, has just launched the new versions of its flagship certifications: the Nutanix Certified Associate (NCA) 6.10 and the Nutanix Certified Professional – Multi-Cloud Infrastructure (NCP-MCI) 6.10.

If you are an IT professional, passionate about the cloud or if you want to validate your skills with one of the major players in the sector, this certification update is an opportunity not to be missed.

Why take these certifications?

Nutanix certifications are recognized worldwide to validate skills in the design, deployment, and management of cloud infrastructures. In particular:

The NCA 6.10 certification is aimed at beginners or intermediate professionals, those who wish to demonstrate their understanding of the fundamental principles of virtualization, storage, and cloud environments with Nutanix.

The NCP-MCI 6.10 certification is aimed at experts who want to validate their mastery of multi-cloud infrastructure concepts, resource management across multiple platforms, and how to optimize hybrid and multi-cloud environments with Nutanix.

These certifications can play a decisive role in your career path, proving your skills and opening up new opportunities in companies of all sizes.

Free Registration Until December 13!

To celebrate the launch of these new certifications, Nutanix is ​​offering an exclusive opportunity: the NCA 6.10 and NCP-MCI 6.10 certification exams are free until December 13, 2024! This is the perfect opportunity to validate your skills for just 1 cent.

Registration is quick and easy. All you have to do is go to the official Nutanix University website, log in, and select the certification you want.

Once registered, you will have access to the online training platform and will be able to schedule your exam according to your availability. At the time of payment, use the discount coupon corresponding to the chosen certification:

  • NCA 6.10: NXFRNCA24
  • NCP-MCI 6.10: NXFRNCP24

Important: The free offer is valid until December 13, 2024. After this date, the discount coupons will no longer be valid. So don’t hesitate to register now to avoid missing this opportunity!

Official Nutanix post : https://next.nutanix.com/education-blog-153/announcing-nca-ncp-mci-v6-10-get-certified-for-free-with-limited-time-offer-43744?blaid=6791730

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I told you about it in my previous article, Nutanix invited all the members of its “Nutanix Technology Champion” program to come and participate in the very first NTC Tech Connect ever organized, at its headquarters in San José, California. The opportunity for me to come back to this privileged event during which we had the chance to be in direct contact with the internal teams of the editor.

Un long voyage

The journey to NTC Tech Connect was long from France. First a TGV to Lyon Saint Exupéry with a night in a hotel. Up at 3:30 am on Sunday to take the plane to Amsterdam where I picked up Jeroen Tielen with whom I did the 11 hours of flight to San Francisco. Once there, we had an evening planned at the bar “MINIBOSS” which mixes cocktails, pizzas and arcade games!

Day 1: Nutanix Cloud Solutions

The first day began with a presentation by Angelo Luciani, Community Manager at Nutanix, who warmed up the room and enthusiastically launched the event to prepare the ground for the various speakers we were going to meet during the day.

Although it was not planned in the program, Cameron Stockwell took the floor to discuss LCM (Lifecycle Manager), an essential tool in infrastructure management, and Foundation, which allows us to deploy our clusters with ever greater speed. These two building blocks are constantly evolving and improvements are already planned.

Then, Rajiv Ramaswami, CEO of Nutanix, did us the great honor of joining us to offer us a strategic overview of the evolution of Nutanix’s business, emphasizing the company’s long-term vision and its ability to remain a leader in the cloud and hyperconverged infrastructure market. He also engaged in a series of questions and answers with the NTCs present in the room.

The technical sessions were then able to begin! The focus was first on Nutanix Cloud Manager with the presentation of Vijaay Doraiswamy, Ramachandran Varadharajan and Pranav Gupta. They shared with us the latest innovations around this key platform that facilitates the management of multi-cloud environments with Intelligent Ops, Self-Service, Cost Governance and Security Central.

The discussion then focused on the Nutanix Kubernetes Platform (NKP), where Deepak Goel highlighted the importance of integrating Kubernetes into the Nutanix ecosystem, particularly with regard to automation, container orchestration and container security.

Oscar and Ramya Prabhakar introduced us to the latest developments in AOS (Acropolis Operating System) and NDK (Nutanix Data Keeper), two technologies that enhance the Nutanix infrastructure to provide optimal resiliency and performance enhancement.

The morning being over, a friendly lunch break allowed us to all meet around a table to share a meal with Mexican flavors. The opportunity for us to share our experience and strengthen our ties.

After the lunch break, Jennifer Rowland spoke to focus on AOS and AHV and in particular on the entire development roadmap of these 2 essential bricks of the Nutanix ecosystem.

We restarted the afternoon technical sessions with Ahmad Elayat who gave a presentation on Nutanix Database (NDB), explaining how this solution simplifies large-scale database management for all Nutanix customers.

Hillary Hill then gave us a quick overview of Nutanix’s social media activities, with a particular focus on the company’s digital strategy. She also discussed the avenues explored internally to collaborate more closely with our community.

The day continued with a presentation by Srinath G S Adharsh Praveen R, who highlighted Nutanix Central, a unified platform for managing customer infrastructure across multiple clouds. Currently a cloud-only component, an on-premise version is under consideration…

Finally, the event concluded with a reception in the company gardens where we were all able to enjoy a friendly moment to continue to exchange together and get to know each other better.

Day 2: Security, storage and object management

The second day of this Nutanix Tech Connect, which unfortunately only lasted one morning, focused on the other key Nutanix solutions.

Aniket Daptari and Swaminathan Sankar opened the morning with a technical presentation of Nutanix Flow, a network and security management platform for hybrid cloud environments, including VPCs and how they work.

Ramesh VelurEunni then took the floor to tell us about Nutanix Files, a scalable and high-performance file storage solution that facilitates the management of unstructured data. A focus was made on the performance of the solution which has been optimized:

The last session of the event, hosted by Gowtham Alluri and Mayur Sadavarte, focused on Nutanix Objects, a highly scalable object storage solution that is essential for large enterprises requiring robust management of growing data volumes.

Conclusion

This first edition of NTC Tech Connect was a great success and offered us a unique opportunity to be as close as possible to the publisher’s internal teams. This meeting allowed us to have a detailed overview of Nutanix’s latest innovations, reinforcing the company’s commitment to offering cutting-edge cloud solutions.

These two days of technical discussions and exchanges allowed us to build stronger links between NTC and to develop our professional network. We owe all this to Angelo Luciani and his team, who have been working hard in recent weeks to allow us to fully experience this exceptional event.

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ntc tech summit 2024

I told you about it at the beginning of September, I am lucky as a privileged member of the Nutanix Technology Champion program to be invited by Nutanix to their headquarters in San José, California.

So in the next few days I will be flying to the United States and Silicon Valley for an exclusive event reserved for all members of the NTC program. The first step of the journey is to join my 2 acolytes Jeroen and Maroane in Amsterdam, from where the 3 of us will fly to San Francisco. We will then reach San José where we will meet up with all our colleagues from the program.

This event will allow us to visit the publisher’s headquarters but also to:

  • meet the technical directors, product managers, some engineers, etc.
  • attend sessions dedicated to the roadmap and led by experts
  • activate and develop our NTC network
  • take a look at Nutanix !!!UNDER NDA!!! 2.0

For the occasion and to mark the occasion, I had some unfortunately already collector’s stickers since the name of the event changed less than 10 days ago!

Oh well! They will still be distributed during the event. In short, you will have understood, I started my suitcase and I am impatient to take off towards the California sun for these few days which already promise to be memorable.

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Announced a few weeks ago, the overhaul of the NCSE Core and NCSR 2022 certifications that were unavailable on the Nutanix University portal has finally taken place!

The NCSR 2022 is now replaced by the NCSR: Nutanix Basics. The content remains broadly the same, the course and questions have simply been redesigned and seemed more understandable to me.

You can find the NCSR Nutanix Basics on the Nutanix University website.

The NCSE-Core has undergone a complete transformation. It is now replaced by the Nutanix Accredited Professional Infrastructure which is free for the moment. Indeed, you can follow the complete course on the Nutanix University which will allow you to obtain 2 certifications for free:

  • Sizing Professional
  • Nutanix Accredited Professional Infrastructure

You can find the Nutanix Accredited Professional Infrastructure on the Nutanix University website.

These certifications are intended for profiles who wish to do pre-sales work, so if this interests you, go for it!

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Nutanix Technology Champion NTC

It has been a year since I first applied to join the exclusive Nutanix Technology Champion program. After my application was deemed admissible, I had the immense privilege of being included in the very select group of NTC 2024 by Angelo Luciani, the NTC program manager at Nutanix.

This year, I was able to meet incredible professionals from the sector with whom I was able to discuss Nutanix and the world of infrastructure in general. I was invited to exclusive online sessions reserved for members of the NTC program but especially to .NEXT in Barcelona during which we were able to benefit from privileged access (front row seats at the conferences, meeting with Rajiv Ramaswami (the president and CEO of Nutanix) or Sebastian Vettel (one of the personalities invited to the event), dedicated space…).

Nutanix .NEXT Barcelona 2024

As is the case every year, registration is open again for the 2025 Nutanix Technology Champion class.

Introducing the NTC Program

This program recognizes Nutanix hybrid multicloud experts for their continued external contributions to the community and industry. Our Nutanix Technology Champions are our technology advocates and ambassadors, influencing change with practical advice and bold ideas.

The NTC program provides unique opportunities for individuals to enhance their knowledge, build their brand, and help shape the future of hybrid multicloud.

Program members receive the following benefits:

  • Early access information on Nutanix products and announcements.
  • Private beta testing and insight into product development are available.
  • Participation in exclusive meetings with engineering teams.
  • Access to discussions with internal teams on the Nutanix NTC Slack channel.
  • Unique activities at our annual .NEXT conference include pre-show briefings.
  • Career development and guidance for those aiming for NCP, NCM, and NCX.

To be considered for the program, candidates must complete and submit the online NTC application form.

The following criteria will be considered:

  • Be involved in the Nutanix community forums and actively contribute content.
  • Speak at community events and industry user groups.
  • Hands-on experience with our products and services.
  • Blogging, podcasting, YouTube videos, and being active on social media.
  • A desire to contribute to the IT community.
  • Demonstrate how to develop, deploy, and scale Nutanix environments.

The activity is held externally for others to see and learn from, as the NTC program is a community-driven program.

When accepted into the program, we expect you to:

  • Share best practices with your peers on our Slack channel.
  • Participate in discussions and research on products, brand, and other topics.
  • Join us for our monthly live meetings.
  • Contribute blogs or videos to the online community or your personal blog.
  • Participate in customer stories, case studies, and other marketing activities.
  • Interact with attendees and share your story on .NEXT.
  • Participate in user group or industry events.
  • Help people find answers in the online community.

We want to foster an active and collaborative group of experts, so space is limited.

If you think you have what it takes and are interested in joining the program, please fill out the application form on the official website.

Official article: https://next.nutanix.com/community-blog-154/nutanix-technology-champion-2025-applications-are-open-43601

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