License-Free Virtualization for Your Enterprise
- 428 Topics
- 1,421 Replies
Should I stop the cluster to set Erasure Coding?
Hi, I'll create new cluster for 3 nodes that maybe expand. If I add node to cluster, Should I stop it to set Erasure Coding ? Or Should I set Erasure Coding at create new cluster before running user VMs ? I'm concerned about some impacts user VMs running on new cluster for that setting.
NTP time sync in cluster consisting Hyper-V compute nodes and AHV storage nodes
Hi, I have a customer who is having a cluster of 11 Hyper-V 2016 compute nodes and 2 AHV storage nodes. During a NCC health check, there is an error mentioning that the 2 AHV nodes are not syncing with any NTP server. The current NTP time sync setup is something like this. Nutanix cluster (Hyper-V and AHV) → DC → NTP source First question, how should we begin troubleshooting the issue? There is no remote access for our support to perform a webex session troubleshooting due to security. Second question, customer is changing the NTP source. This new NTP source is 1-2 mins behind. Any impact if customer proceeds to update on the DC? Does the cluster auto sync up Third question, at what time intervals does the nutanix cluster probe or sync up with NTP time? Regards, Leonard Thng
CPU Effective RAW Capacity
Hello. I'm trying to understand the sizer. How to calculate Applied Weight? CPU Type : 2 x Intel Xeon Processor 6252 (2.1 GHz, 24 cores) (48 Cores) Actual Core Capacity : 336.00 Applied Weight : 74.39 Adjustment Due To Memory Issues : 0.00 Adjustment Due To NUMA Considerations : 0.00 Effective RAW Capacity : 410.39 (Actual Core Capacity + Applied Weight) https://sizer.nutanix.com/#/help/articles/155 => Page does not open
AOS 220.127.116.11 LTS - Error creating image from URL using PE, acli and REST API
Hi all I´m attempting to create one disk image from http server (I know that NFS is preferred) but i got errors from PE, acli and REST API. AHV, CVM, PE, PC and the web server are one the same network (then I can exclude routing issues) and on the web server (Centos 7.7, apache httpd-2.4.6-90) firewall and selinux are disabled and the url is called using IP to avoid dns issues. The content is available via wget but the image creation command ends with error 503 (Service Unavailable) while on the web server with log at debug level nothing is written on error and access log. I have tested also to stop httpd and use python -m SimpleHTTPServer 80 but doesn´t work (I got one excepction that I cannot fully read and I don´t know where is logged) What´s wrong? I´m missing something? Someone have a suggestion? Here some operation samples: Download test using wget to check http service ~~~ nutanix@cmv:~/tmp$ wget http://192.168.158.40/images/gm-back-test-001-scsi1.qcow2 --2020-03-17 16:
Nutanix space reclaimation
Hi Team, We are running few file servers (windows 2016 machines) which are running on Nutanix + VMware 6.5. For e.g. i have a 5TB VMDK attached to the VM which is holding up a lot of files (being a file server). Now when we check the size of this disk in VMware, we this as around 4TB consumed (similar figures in Prism as well). However within Windows, the actual space consumed is only 1 TB. The question is - how do we reclaim this space to match up the numbers seen by OS with what VMware believes the used space is. (i have seen some posts where users have mentioned using sdelete etc. but it isn’t really a scalable solution) Thoughts ? Thanks. Ravi
SAP Business One on NUTANIX
Hi, my name is Rossana, I am new to the community and I have a question, I would like to know if someone can help me to know what kind of requirements NUTANIX must have to install SAP Business One, with 25 users and a HANA Database engine of 64GB with an average of 20,000 monthly transactions. Thank you very much
Best way to power down an Hyper-V cluster for extended time or relocation
Are you going to have a planned power outage or relocation procedure that needs to shut down your Hyper-V cluster safely? Maybe you have experienced this situation: We have a scheduled power outage at this location for Dec 31th. We are going to need to power everything down prior to the outage. What is the best way to safely power down the Hyper-V cluster? With Hyper-V Clusters it is important to consider the following procedure before shut down all the user VMs in the failover cluster : Make sure that you have at least one domain controller running outside of the Nutanix cluster. Otherwise, you will not be able to start VMs after powering on the cluster. Make sure that the Hyper-V hosts are configured to use this external DC/DNS server. Disable all Metro Availability-enabled Protection Domains, and make sure no on-going replication is happening. Consult the article Disabling Metro Availability for more details. To check the complete procedure and the details follow through to th
ESXi 6.0 Upgrade to 6.7U2
I'm trying to upgrade ESXi 6.0 to 6.7U2 but when try to do it from Prism im getting errors on DRS not enabled. Now we don't have DRS license, our cluster is ESXi 6.0 Standard License, is there any way to do the upgrade without the needs of DRS ?I read few documents that even if i try to use vCenter Update manager update will fail becasue DRS is not enabled. Any workaround solution ?
100% CPU Usage on all my hosts
In the last few weeks we have been experiencing complete host CPU usage at 100% on all of our host(6 of them). We were never this high. When the system is at this level no one can do much on the ystem for a few minutes. The biggest change we did was add Bitdefender Gravity Zone to our system. We have about 650 VMs on the system. Memory usage hovers between 50-60% on all the hosts. We are running ESXI hypervisor with VMware Horizon to run our VDI system. Anyone have an insight into this situation? Is there any tweaking I need to do? What could be causing this?
Download AHV image/vm disk from AOS 5.10 - scp error on port 2222
Hi all, I´m attempting to download one image from a cluster on port 2222 as described on many documents (i.e. AHV | How to access VM disk files on Nutanix container or Copy files to/from a containter ) and I have a strange issue: using Filezilla or Winscp it works fine, using Centos 7.7 Linux scp doesn´t work. A syntax as “scp -P 2222 admin@VCM-IP:/default-container-171248/.acropolis/vmdisk/image-or-disk-uuid” accept the password and then terminate with error “exec request failed on channel 0” On the linux side firewall & selinux have been disabled a scp to other systems works fine. Any suggestion?
Understanding NX GPU Solution
Let us consider a scenario where you are running specific workloads that require extensive video rendering and needs GPU-enhanced acceleration. Nutanix provides a solution in which the hardware is configured with GPU cards that allow video rendering to be passed through to the User Virtual Machine. Want to read about NVIDIA Grid vGPU on Nutanix? The following guide will help in understanding the architecture and requirements of handling it. Nvidia grid vGPU Guide So which hypervisors support this implementation? The following hypervisors support the implementation : AHV VMware vSphere Microsoft Hyper-V The following document lists the hypervisor implementation in-depth for a vGPU solution. vGPU on Nutanix: Hypervisor Implementation. Have a GPU in your NX environment but wondering regarding the configuration, drivers requirement and basic troubleshooting? Go through the following articles to understand some basic troubleshooting steps, command
SQL Licensing - Moving From ESXi to AHV
I’m in the process of migrating from VMWare to AHV. I was curious if there are any licensing changes in regard to SQL. Do I need to just make sure that I have enough core licensing to run the actual VM or do I have to buy core licenses for every core on my entire 4 node cluster? I heard of something called infinity that I could use to keep my VM on just one node? Thanks for your help!
Error adding HyperV feature on Server 2016
Attempting to add the Hyper-V feature to a fresh Server 2016 VM. I receive the message: "Hyper-V cannot be installed because virtualization support is not enabled in the BIOS" After picking through some very limited search results I attempted to modify the VM using "cpu_passthrough=true", however the error remains. Any advice to get this working? Thanks Andy
What organizations lose when not chose Nutanix as the Hyper-Converged Infrastructure (HCI) Solution – Part 1
Technology landscape is changing rapidly, and IT teams in organizations should embrace the newer technology at the earliest as it would be refreshed in no time. Meanwhile, there are some technologies which are making their presence felt and getting enough attention that every other vendor is willing to launch or have a me-too product irrespective of its [b]Reliability, Availability, Serviceability,[/b] and[b] Scalability[/b] features. The technology is Hyper-Converged Infrastructure aka HCI. The organization coined and pioneered this is Nutanix Enterprise and a product initially good for running Virtual Desktop Infrastructure (VDI) Solutions has become de-facto standard for all kinds of virtualization workloads be it VDI, Remote Office Branch Office (ROBO), Business Critical Applications (BCA), or similar virtualized workloads. Nutanix is about to complete 10 Years in industry, lot of things have changed from its inception as a Hardware Appliance-based Solution to True Hybrid Cloud bas
vServer LACP Issue
Hi there, I’m a network guy and this is my first time post here. Sorry if I broke any forum rule. We are having some issue with vServer host on Nutanix, and I would like to see if any experts here can tell the solution of the problem from nutanix stand-point. We have nutanix setup as LACP and connects to two nexus switches(5000) by using virtual port-channel. Sometimes mac address of vServer showed incomplete on arp table in one of the switches, not only one vServer. Then we finally realized that if we shutdown one port of the switch, which mac address incomplete in arp table, the vServer started to work immediately. After we executed no shut, the issue was back again. We checked the issue from switch stand-point, but couldn’t find any issue. Is anyone know the issue can be related to Nutanix? Thank you.
Where are you running your applications and Why?
We are collecting the community’s input on what is driving where they run their applications and why. Share your input on the attributes and factors that are influencing where your applications are being hosted and run by taking the survey here -- https://www.surveymonkey.com/r/app_attributes_survey Also, if you are interested you can read the first of the blog series on this topic here -- https://www.nutanix.com/blog/whats-driving-where-you-run-your-it-applications-and-services.
Network Series | Troubleshooting Networking on ESXi
You have a new Nutanix solution configured using ESXi hypervisor and you’re facing issues with Networking like packet drops and NIC configuration. You want to check if you have quite a lot of RX/TX errors in the NIC or if your NIC is flapping. You might also want to check the VLAN and MTU configuration or how vmkernel port(vmkX)is configured. Troubleshooting is fun if you understand the architecture and know the commands. We have a knowledge base article to guide you regarding troubleshooting network issues on ESXi in a Nutanix environment and help to make the users a little more aware of the commands and the networking architecture. Go through the following KB to get a brief idea regarding network troubleshooting in ESXi.KB-1088 Go through the following vSphere Networking Guide to know more about the architecture.vSphere Guide Networking
Elasticsearch on Nutanix
Ray Hassan from our solution engineering team has blogged about Elasticsearch on his site cannybag.com (don't ask :-) Here are some relevant blogs worth sharing: * http://cannybag.com/2015/10/elk-on-nutanix-elasticsearch/ * http://cannybag.com/2018/08/elasticsearch-sizing-on-nutanix/ Elasticsearch is also available as a pre-seeded app blueprint through Calm -- https://portal.nutanix.com/#/page/docs/details?targetId=Nutanix-Calm-Admin-Operations-Guide-v57:nuc-launching-elastic-search-app-blueprint-t.html Gabe Contreras, consulting architect in our services team is also writing up a blog about Elasticsearch on Nutanix that will be published soon. [user=7898]aluciani[/user] or I will post the link here as a reply once its posted.
Managing a Hyper-V cluster
Let’s say you have a new NX Hyper-converged architecture and want to use Hyper-V as a hypervisor, but now you are confused regarding the initial configuration and what all are required.Questions which are hovering your mind right now !!! What are the requirements to create a Nutanix cluster with Hyper-V? How can I image the nodes with Hyper-V and install AOS? How can I manage my Hyper-V host? How can I create a failover cluster and update Hyper-V settings? How can I create and manage VMs, especially HA VMs? Do we provide a documentation which can help you answer all these queries? Yes, absolutely Give this following documentation a read to easily get started with Hyper-V.KB-2235Want to know about the configuration of Hyper-V in Nutanix in-depth? Go through this documentation guide to understand how Hyper-V gets configured in a Nutanix environment. Hyper-V configuration
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