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AHV Virtualization

Webscale Virtualization for the Enterprise

  • 660 Topics
  • 2,155 Replies
660 Topics
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michaeltregoning83Explorer
asked in AHV Virtualization
Error creating VM

Hi - I’m having an issue with a new installation of Nutanix on AHV (single node cluster) that I’m hoping someone hear can help with.Basically, using Prism, when I attempt to create a new VM the process fails with the error “VM with ID ‘*********’ was not found”. However, if I attempt to add a VM without a new disk, it successfully creates the VM but I can’t add a disk to it, error “Operation Failed: InternalException”.I’ve been able to upload my ISOs for installation etc. and of course the CVM is seemingly working fine. Any ideas what could be wrong? Many thanks.

14602
J
3 years ago
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Moises S FAdventurer
asked in AHV Virtualization
Solution microVMs and nested virtualization

Is there the possibility of using the microVM concept in Nutanix? Are solutions like firecracker (https://firecracker-microvm.github.io/) possible with Nutanix?As I understand it is not possible to nested virtualization with Nutanix (https://next.nutanix.com/server-virtualization-27/nested-virtualization-33423), so is there any provision for a feature that enables the use of microVMs with Nutanix?

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M
3 years ago
R
Nutanix Employee
raajiNutanix Employee
posted in AHV Virtualization
Virtual Machine High Availability

Virtual Machine High Availability (VMHA) ensures that VMs restart on another AHV host in the cluster if a host fails. VMHA considers RAM when calculating available resources throughout the cluster for starting VMs. VMHA respects affinity and anti-affinity rules. For example, with VM-host affinity rules, VMHA does not start a VM pinned to AHV host 1 and host 2 on another host when those two are down unless the affinity rule specifies an alternate host. There are two VM high availability modes:  Default: This mode requires no configuration and is included by default when installing an AHV-based Nutanix cluster. When an AHV host becomes unavailable, the VMs that were running on the failed AHV host restart on the remaining hosts, depending on the available resources. If the remaining hosts do not have sufficient resources, some of the failed VMs may not restart.  Guarantee This non-default configuration reserves space throughout the AHV hosts in the cluster to guarantee that all VMs can re

5090
R
Nutanix Employee
3 years ago
J
jmilicPathfinder
posted in AHV Virtualization
SQL Clusters on Nutanix

Anyone running Traditional SQL Clusters on a Nutanix / HyperV implementation?

370821
H
Nutanix Employee
3 years ago
B
BSchafferAdventurer
asked in AHV Virtualization
Windows Server Patching

I am looking for a patching product that will tie into Nutanix and be able to take a snapshot before patching, we are looking to automate this process to get away from manually taking snapshots prior to deploying patches. We do have Protection Domains setup but with the timing intervals it is not ideal only use those pre-deploy as they can be hours behind the actual patching deployments. If anyone is using a product that has this capability please let me know or if you may have a better way to accomplish this within Nutanix.

15533
J
3 years ago
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galad2003Adventurer
asked in AHV Virtualization
VM creation with ACLI

So I use the following script to create a VM. I actually have a small batch file that opens putty, logs into a CVM, prompts me for the $name and then runs the script below. The image is one I made, then sysprepped and uploaded as a disk image.Everything works great except that when I then open the console it goes through the Windows setup. I have an Unnattend file but I am unsure how to use it with my script. If I go through the GUI to create a VM I just point it to the unattened file in our file share.Is there a way to attach the sysprep file? I thought it might be a parameter vm.disk_create but I am not clever enough to figure that part out and thought maybe someone else smarter could help. First world problems I know but it could help save me 30 extra seconds of not having to type the admin password in and set the keyboard settings etc.#creates a vmacli vm.create $name memory=$mem num_cores_per_vcpu=$core num_vcpus=$vcpu uefi_boot=TRUE &&#Create C:acli vm.disk_create $name c

11751
G
3 years ago
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Luiz_SilvaExplorer
asked in AHV Virtualization
AHV image service - uploading not fast enough

Do you know guys a way to speed up uploading large image files (vhdx etc) to a Nutanix container? Using browser or winscp we got maximum 180GB/hour (using a windows VM with direct connect to CVM network, no routers/firewalls). Any idea?

2190
L
3 years ago
Sayo
SayoAdventurer
asked in AHV Virtualization
AOS upgrade from 5.10.6 to 5.15.5 Can I roll back ?

I will upgrade AOS version from 5.10.6 to 5.15.5 on Dell XC640 that hypervisor version is vSphere6.7 U2.Can I rollback AOS version If upgrade process occurs any trouble? Please give me any manuals if do you know that.

8762
Sayo
3 years ago
M
Nutanix Employee
marcel-kleineNutanix Employee
posted in AHV Virtualization
Running Red Hat Openshift on Nutanix AHV

The technical piece below found our way through our partner channels. Installation instructions for Red Hat OpenShift on Nutanix are detailed in the documentation below. Enjoy, and as always feel free to provide us with feedback. User Provisioned Installation of Red Hat OpenShift 4.3 on Nutanix AHV 5.15 This manual was created during a proof of concept environment using Nutanix AHV 5.15, the KVM-based hypervisor of Nutanix, with OpenShift 4.3 in combination with the Nutanix CSI driver. The Nutanix CSI driver provides scalable, persistent storage for stateful applications using Nutanix Files and Nutanix Volumes. Please note: At the time of writing, Nutanix AHV in combination with OpenShift is supported by Nutanix, but not certified by Red Hat. If certification is required, clients are advised to use any of the other hypervisors supported by Nutanix. The installation steps followed are documented in the IBM Cloud Architecture & Solution Engineering repository guide. The PoC envi

73024
S
3 years ago
T
themingsenVoyager
asked in AHV Virtualization
Defragment Guest OS

I was wondering what best practice is for defragmenting guest OS on a Nutanix node.  I am running ESXi on the nodes.  I have looked all over but I cannot find anything that tells me definitively the best practice.

28646
Jon
Nutanix Employee
3 years ago
S
SinghKAdventurer
asked in AHV Virtualization
ESX Patching.

I have VMware 6.5 U2 running  on Dell XC 740 xd appliance in NUTANIX environment.ESX are not patched since a year now. Looking for the best option to apply patches.Is VUM will be ok or from PRISM ?

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R
Nutanix Employee
3 years ago
J
jholmgrenPathfinder
asked in AHV Virtualization
Sybase ASE on AHV?

Hello Everyone,Has anyone here run Sybase ASE in a Linux VM in AHV?   We have a few legacy physical servers that I’m looking to migrate into our AHV cluster.  I know it ‘should’ work but looking for a reference or reassurance from anyone who has ‘been there, done that’.  Thanks,Jim

1581
AnishWalia20
Nutanix Employee
3 years ago
C
CyberGTrailblazer
posted in AHV Virtualization
Self Service VM Customization

I want to introduce Self-Service VM operations via Prism Central for our end-users (do not have CALM). So, I’ve used cloud-init (Linux VMs) and cloudbase-init (Windows VMs) along with customization code (Python) to deliver this Self-Service VM provisioning experience. You may refer https://github.com/cybergavin/nutanix/tree/master/self-service for details of this set up. Any feedback always welcome. Sorry if the code isn’t too pythonic as I’m a python newbie.

2220
C
3 years ago
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JukkaFINVoyager
asked in AHV Virtualization
Nutanix CVM - diskspd

I’m new to Nutanix and we have a Nutanix cluster online. For testing purposes I’m running diskspd test in a VM.I’m running some diskspd test with identical VM configs in several enviroments 3-tier Hyper-V/ VMware and HCI Nutanix AHV.Why is it that running a test with -Sh flag (no software/hardware cache) gives almost 10 times lower results in Nutanix compared to other platforms? Without -Sh flag Nutanix is running test with higher results compared to my other testing platforms. Is it because of how CVM is designed to work? I’m just trying to understand.

2753
Alona
Nutanix Employee
3 years ago
M
MarvinBAdventurer
asked in AHV Virtualization
Determining appropriate methodology for cpu over subscription

We are new to Nutanix. We are migrating from ESXi to AHV.  We currently have some level of CPU oversubscription in place on ESXi.  We anticipate the need to oversubscribe CPU on some clusters and I am looking for ways to do this safely.  I’ve looked in the Best practices guide but there was very little there.  Any help would be appreciated.

30494
Sergei Ivanov
Nutanix Employee
3 years ago
A
Andrew_ussVoyager
asked in AHV Virtualization
Memory Consumption Report

Hi,We have PRISM Central Pro license and I’d like a report or Analysis view on which virtual machines are consuming the most memory. The Cluster in question is VMware 6.7. Is this possible and what is the best way to go about it?

15622
A
3 years ago
G
Gregg_ITXVoyager
asked in AHV Virtualization
Nutanix lock a VM

Good afternoon, all!I’m setting up a new PKI infrastructure in a Nutanix cluster and I want to shut down the root CA for safekeeping. Is there a way to add some safeguards so that the VM can’t be started inadvertently?

1673
Alona
Nutanix Employee
3 years ago
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HasAdventurer
asked in AHV Virtualization
Easy way to put Vmware ESXi host into maintenance mode.

I know there’s another topic like this but, it is 3 years old. Is there an easy way to put a single ESX host into maintenance mode?Not to compare products but with Cisco Hyperflex, you right-click on the host and there’s a “Hyperflex maintenance mode” option.  This does what needs to be done to the CV without having to SSH into anything.I was just wondering if the process has improved in 3 years.

84755
H
3 years ago
Sayo
SayoAdventurer
asked in AHV Virtualization
I cannot expand the cluster.

Hi,I cannot expand the cluster when Pre expand-cluster tests were failed and error message was "Failure in pre expand-clustrer tests.Errors:Failed to get vlan tag of node:XXXXX" on Prism Element.CVM and HyperVisor Network use Tagged VLAN and PortChannel in L2 switch ports.Ping to HyperVisor’sManagement IP from other NW segment is OK.Of course, CVM and HyperVisor’sManagement IP are same segment.Should  I do any other? As below, each of versions.・DELL XC640・AOS：5.10.6・ESXi：6.7 Update 2 (Build 13006603)

51008
H
3 years ago
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CESCPathfinder
asked in AHV Virtualization
Windows 2019 Standard edition guest OS licensing on AHV

Hi, We have deployed couple of guest VMs on Windows 2019 Standard Edition OS on our 6 node cluster. Both the guests are configured with 1 VCPU with 2 cores along with 16 & 32 memory respectively. We have procured standard paper license of the OS. The hypervisors are running on AHV version 20170830.337 & AOS - 5.10.8.1 LTS. Is there any specific licensing model for Windows Server OS to run on AHV? How are the Windows licenses determined? Kindly help.

76984
M
3 years ago
jonas.hogman
jonas.hogmanTrailblazer
asked in AHV Virtualization
PrismCentral 2020.9.0.1 cant delete Project

Hi! have a Project in Prism Central that's acting wierd.When i try to update the Project trough GUI i get this error message:Edit conflict: please retry change.Notification { "api_version": "3.1", "code": 409, "kind": "project_internal", "message_list": [ { "message": "Edit conflict: please retry change.", "reason": "CONCURRENT_REQUESTS_NOT_ALLOWED" } ], "state": "ERROR" }So i connect with SSH to a PC CVM, and try to delete the project trough nuclei,<nuclei> project.delete Project \Name confirm=trueConfirm deletion of project? (yes/no) yes{ "message":{ "kind": "project","code": 409,"message_list":[ { "message": "Edit conflict: please retry change.", "reason": "CONCURRENT_REQUESTS_NOT_ALLOWED" } ],"state": "ERROR", "api_version": "3.1" } }It is only the specific project that has this problem, other projects works just fine. I have searched KBs but cant find anything. The ncc health_checks run_all are not showing up anything suspicious.  I have also opened a case on this error!

5281
jonas.hogman
4 years ago
Sayo
SayoAdventurer
asked in AHV Virtualization
Cloud Connect needs NTP sync?

Hi , Could you advice me  ?Now, Hypervisor and CVM is NOT syncronized from NTP Server.I use CloudConnect everyday , but that was failed.Is CloudConnect faiure reason relevent to NTP Server unsyncronization? TestConnect is OK from Onpresmiss Cluster to AWS.I read this;https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism-v5_17:wc-cloud-connect-wc-c.htmlSincerely, 

1121
Alona
Nutanix Employee
4 years ago
M
MrMikeTrailblazer
asked in AHV Virtualization
AD domain controller disaster recovery question

Just curious how other users running AHV plan their ad disaster recovery?  AHV does not support VM-Generation ID so it looks like the most straight forward method not including additional software would be to use the builtin server backup to backup and restore at least the server with the fsmo role.  I wonder what happens in a protection domain scenario especially if there are multiple servers.  Seems like there could be usn rollbacks issues.  Any input on how others are doing it would be appreciated since the documentation seems to be scarce for AHV.

7041
Alona
Nutanix Employee
4 years ago
Sayo
SayoAdventurer
asked in AHV Virtualization
Cloud Connect AWS is failed.

Hi, I am always taken care. I use CloudConnect by VPN connection to AWS and enable NW compression.Everyday repeat that.Since 1 year ago, All PDs are failed. below the message on Prism ;---Replication was skipped for protection domain XXXX of snapshot (X,X,X) to remote site XXX. Replication was skipped as a newer snapshot was available.---I executed cli on CVM, replication statuses are “Sending” .---$ncli pd list-replication-status Replication Operation     : Sending And I did “Test Connection” on Prism was “OK”. What do you think this reason? Sincerely,

1613
Sayo
4 years ago
Sayo
SayoAdventurer
asked in AHV Virtualization
upgrade Hyper-V 2012R2 to 2016 on XC630

Hi,I am always taken care.I'll upgrade Hyper-V 2012R2 to 2016 on XC630 so I have some questions.・metadata(json) download from Nutanix Portal. Can I do that Hypervisor ISO file there ?・What difference are metadata(json)  each ? ・Use Hypervisor ISO file of Evaluation version, is it OK?・ISO's language adapt any languages? or English only? Sincerely,

3823
Sudhir9
Nutanix Employee
4 years ago

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