AHV Virtualization

HiI have an intermittent issue where VMs can’t contact VMs on other hosts.  I’m trying to find a pattern with timings and the hosts involved but haven’t found one yet.When a VM can’t reach a VM on another host,  the problem can be resolved by migrating the VMs to the same physical NX hoste.g. VM1 on Host1 can’t reach VM2 on Host2,  workaround is to migrate VM2 to Host1This leads me to believe there is a problem with the network between hosts.  Each host has 2 uplinks going to 2 switches with active-active load balancing and my current theory is the problem lies with the aggregation.   Perhaps packets are leaving eth2 and returning on eth3?I’m going to change the OVS bond mode from Balance-TCP to Active-Backup and see what happens.  I don’t need the throughput of 2 active links so perhaps this should have been the config from the startQuestion - has anyone else seen this behaviour on your cluster?  Environment:4 node clusterUplinks to 2 Cisco Nexus switches aggregrated using Balance-TCP

Hi all, I’m a bit confused about number of vCPU that should be assigned to FSVM. For example, I have 4 nodes and each node with 2 sockets (i.e. 2 vCPU) and each with 16 cores (i.e. total 32 cores per node). When creating FSVM, for example, each FSVM needs 8 vCPUs, but I have 2 vCPUs per node only. And we need at least 3 FSVM, that means we need 24 vCPUs. Is that mean I must have at least 12 nodes? And each vCPU with 1 core only? 

Nutanix can get VM utilization CPU memory (low, high, current) like vmware RVtool?

NIC MAC address can only be configured via acli.It is not possible to change MAC address for an existing NIC. A NIC has to be deleted and then added back with the new MAC address. Nutanix AHV assigns NIC MAC addresses from the range: 50:6B:8D:00:00:00 – 50:6B:8D:FF:FF:FF A statically configured MAC will persist on a Protection Domain migration, but not on any clone or recover from snapshot operation Run the following command on any CVM in the cluster to add a new NIC with a customized MAC address:nutanix@CVM~$ acli vm.nic_create <vm name> network=<network name> mac=<new MAC address>If Network name is not working or not present, we can use Network UUID from acli vm.get <VM-NAME> or acli net.list:nutanix@CVM~$ acli vm.nic_create <vm name> network=<Network-UUID> mac=<new MAC address>Note: “:” symbol must be used as a separator. If no separator is specified or other separator symbols are used, then the addition will fail with an “Invalid MAC addres

can we schedule snapshots weekly at a certain time example weekly Saturday 1PM.

Hi All,  I have done a quick google search and cant find anything on it, would anyone be able to advise if / how with AHV to check / change a VMs disk configuration so that a disk isnt included in a snapshot?  the same way vmware has dependent and independent disks.ThanksStewart

Hello,We will be performing maintenance on a network switch at our DR site that will require some downtime.  This switch provides the trunk ports for our DR nutanix cluster.  Do we need to shut down the cluster prior to the switch maintenance to avoid any corruption or will we be ok with just a temporary loss of networking. Thanks for any info you can provide!

We have a 3-node AHV Nutanix cluster and the cluster wide disk usage reflects the size of the disks provisioned for all the guest VMs. The sum of the disk usage of the VMs do not exceed 3 TB but cluster usage detects 11 TB witch matches the total provisioned disks for the VMs + a few snapshots there. My understanding is the cluster should report a total disk usage of 3 TB + the snapshots, What am I missing here? Thanks in advance for your responses.

I tried to install Windows Server 2022 using OEM provided DIsk image but its getting failed below error. Not sure how i can resolve this    

I have new cluster without license with RF2 redundancy, host failure happens, VM restarted on other host but disk is missing on the vm, is it the expected behavior?

Per the following articlesEnable Nutanix Flow article (Opens in new window or tab) is outdated and is only applicable to older version (Prism Central 5.6). Official Nutanix Flow Network Security (formerly Flow Microsegmentation) article (Opens in new window or tab) is applicable to a newer version 6.6 but it doesn't explain how to send Network Flow data remotely Enhance Application Security with Nutanix Flow and Check Point CloudGuard article (Opens in new window or tab) focuses more on application security that are running on Nutanix Nutanix NetFlow configuration article (Opens in new window or tab) says that Nutanix does not support NetFlow/sFlow out-of-the-box at the moment. Instead, they use an external module https://github.com/sflow/host-sflow/ (Opens in new window or tab) which involves altering production systemsit’s impossible to send network data to a remote server. Since it’s possible in VMware I had an impression that the same can be achieved in Nutanix. I can either use di

Hi guys, i have a scenario here. An Admin forget the password and unable to access to both Prism and CLI.What should he do to regain access to the cluster? I understand if you have access to either one of Prism or CLI, you can reset the password, but what if both unable to access?

Hi team,We have a 20 node(Esxi) vSphere cluster with VCenter . and we want to remove three(3) nodes out of the 20 nodes and all the 20 Esxi nodes part of the cluster.and my questions are1.what are the pre-requisites to remove the esxi nodes from the cluster2.what about the data3.please share the step by step procedure to remove the nodes4.if the polices (affinity or antiaffinity ) are there how we can migrate the data5.what about the functionality of HA and DRS6.what about the network connectivity.please acknowledge as soon as possible.  

If you're working with a Nutanix AHV Cluster and need to download IOS files, here's a step-by-step guide to make the process seamless.Step 1: Connect to CVM via SSHOpen a secure shell (SSH) session to one of the Controller Virtual Machines (CVM) in your Nutanix cluster. Use the following command:ssh nutanix@<CVM-IP-Address>Step 2: List Available ImagesOnce connected, use the Nutanix Acropolis Command Line Interface (acli) to list available images:#acli image.listStep 3: Copy Image UUIDIdentify the IOS image you want to download and copy its UUID.#acli image.get <Image-UUID>From the results, copy the vdisk_uuid associated with the desired imageStep 4: Download Using WinSCPDownload and install WinSCP, a popular file transfer tool. Connect to one of the CVM IP addresses on port 2222 using the SFTP protocol. Ensure that you use the username 'admin,' not the Nutanix CVM username.Navigate to the container and locate the disk image corresponding to the previously copied vdisk_uuid

Can I test Nutanix REST API using Nutanix Test Drive? I also can not change default password for admin user in Test Drive Prism Central: “Nutanix/4u” and “nutanix/4u”  gives “Current password provided is incorrect.”

Can you help get the IPMI for Dell XC server and AD ports for Nutanix cluster 

"Phoenix failed to load squashfs.img from both network and existing CVM filesystems of the node"The error above was seen for each of the four nodes. The nodes are Nutanix NX-8155-G8.Any idea of what could be causing? Thanks

Halo,i have problem when sharing data accross VM using VGroup.So i Create VG with name “VGroupBackup” and attach that to Windows VM for SQL Backup. I want share that VG to multiple Windows VM. The Problem is, the data from VM 1 is not syncronize to another VM. is anyone have solution for this? Thank You.

I have 2+2 10gb nics for 5 nodes, is it advisable to configure 2 in one lacp and 2 nics in one nic.Will it tolerate 2 nic failures

Hi  I am new to the Nutanix and want to know clarity on  below query.Please any body help me on below query,we have  a five  Nutanix node cluster and out of five node cluster three of them G5-Nodes which warranty will be completed on 31-oct-2023. reset of two nodes G8-nodes which we were added recently to the cluster.Now we are planning to remove the three G5-Nodes from the cluster and if we remove three G5-nodes,two nodes will be there and it become a two nodes cluster.if it is a two node cluster there no witness vm for redundancy. Now My Questions are below like. 1.       Is there any possibility of removing 3 nodes from the existing cluster?            A. Removing the 3 (G5) Node from the existing RF2 cluster is not possible. (2Node Cluster                         and  RF2 based cluster are designed for different Infra)            B. RF2 to 2 node cluster is not supported by Nutanix engineering Team.         2. What will happen after the License expires?          A. Replacement of h

I’m looking into setting up an automated task to get the output ofacli snapshot.listfrom each of our clusters, so we can track down forgotten snapshots & which VMs they’re on.Ideally this would run from nutanix itself and spit out the results into some kind of shared storage space we can review, but according to this thread, non-default cron jobs are deleted when AOS gets upgraded. I also can’t see anything in PC/PE to automate this, or find this information without SSHing into the CVMs.At this point, I’m looking into writing a script to host somewhere internally that SSHs into each set of CVMs and runs the command, but then I’ve got to handle password security and frankly it seems like too much of a bother for something I’d only have running monthly at most, that would take me 10 minutes to handle manually (if I remember) Does anyone know of a way to achieve this, or shall I just throw some reminders on my calendar?

what is the difference between these, can anyone share the refernce diagram for these 2 scenarios4 × 10 GbE (2 + 2) and 2 × 1 GbE separated Use to physically separate CVM traffic such as storage and Nutanix Volumes from guest VM traffic while still providing 10 GbE connectivity for both traffic types. The four 10 GbE adapters are divided into two separate pairs. Compatible with any load balancing algorithm. This case is not illustrated in the following diagrams. 4 × 10 GbE combined and 2 × 1 GbE separated Use to provide additional bandwidth and failover capacity to the CVM and guest VMs sharing four 10 GbE adapters in the same bond. We recommend using LACP with balance-tcp to take advantage of all adapters. This case is not illustrated in the following diagrams.

What is the policy for Oracle DB Virtual machine licensing?.

There is a cluster using GPU pass-through. It consists of 11 nodes, including 3 GPU nodes. Servers utilizing GPU pass-through are billed servers and should ideally have minimal or no downtime.Due to the current End of Service Life (EOSL), an upgrade is being considered.For this, the plan involves excluding one GPU node from the cluster, upgrading it to AOS and AHV standalone. Then, using cluster expansion to add it back, turning off the power of the GPU pass-through server, migrating it, and subsequently upgrading the remaining nodes through LCM.Is this plan feasible?

Hello Everyone,We have a cluster that failed. It’s running on an old NX-G5 box, and has been out of support for a while now. When trying to start the cluster, we’ll get varying messages. Sometimes it’ll say the cluster hasn’t finished being configured. Other times it’ll be about genesis or zookeeper. Genesis is currently running on all the CVMs, zookeeper is only running on one of them. I’m able to ping everything from everywhere, and all of the zookeeper and network config files look correct. Any ideas on what to check from here would be greatly appreciated.Another thought was that if we couldn’t get the cluster up and running, is it possible to somehow recover the VM disks and import them into another AHV cluster? Does anyone have any experience with this?