How It works

Below are new knowledge base articles published on the week of December 13-19, 2020.KB 8562 - NCC Health Check: robo_witness_configured_check KB 8563 - NCC Health Check: robo_witness_state_check KB 8565 - NCC Health Check: robo_cluster_witness_sync_check KB 9271 - NCC Health Check: ahv_fs_integrity_check KB 9472 - NCC Health Check: category_protected_vms_multiple_fault_domain_check

LCM (Life Cycle Manager) is a tool provided by Nutanix to upgrade firmware and software across a Nutanix environment. Depending upon the type of firmware that needs to be upgraded, a reboot of a node may be required.While reviewing the inventory of software/firmware that needs to be upgraded, you may not know which upgrades require a reboot of a node (or not). This information might be crucial in determining the impact and precautions that need to be taken in planning for the upgrade event (change windows, time allocated, etc.).KB 6107 details which upgrades require a node or CVM reboot and which ones do not. Navigate to the

Below are new knowledge base articles published on the week of December 6-12, 2020.KB 10285 - Nutanix Files :- Alert "Error in updating CA Chain to file servers: Subtask failed for <FSVM Name>" KB 10322 - Alert - A200602 - MicrosegmentationControlPlaneFailed KB 10380 - Xi Leap: VPN troubleshooting guide KB 10400 - Mismatch in Prism Central End of Life alerts KB 10411 - [ Karbon ] K8s clusters using XFS storageclass might encounter mou

In many ways, identifying the problem is harder than solving it. At least in IT.In order to better understand the performance of Nodes in a cluster and User VMs, ESXTOP for ESXi hypervisors and TOP for Linux OS based machines provide us an immediate birds eye view of the performance of the host. It is important to understand the output as a tool towards problem-solving. Here I aim to discuss scenarios you might need to isolate and troubleshoot High CPU observed at the Hypervisor or User VMs.ESXTOP : This command when run lists live CPU statistics specific to the Node the

PCI device enumeration is one of a large number of concepts that transitioned from the physical world. Originally, being a bus and a slot number now, of course, is a virtualised concept.When OS boots during the POST process the local devices are enumerated (checked for presence and size). If an expected device is found at the PCI slot that is a failure of the test. In AHV deployments, the Controller VM (CVM) runs as a VM and disks are presented using PCI passthrough. That means that if AHV PCI devices enumeration has changed CVM may not be aware of the fact and attempt to direct I/O to the devices that are no longer accessible via known PCI bus and slot. This can happen after hardware replacement on an AHV host and the CVM will not boot or will boot with only part of the expected devices accessible. 

Anyone have an issue where you are not able to apply labels anymore to VMs after upgrading to 5.18.1.1 AOS and Prism Central pc-2020.9.0.1?  I am unable to apply labels after upgrade.

Hello,I’m trying to stop the cluster before shutting down and powering off the CVM Nodes. I’m using the following command to attempt to stop the cluster, however, it doesn’t seem to work, the command and the output is pasted, please tell me what am I doing wrong?$nutanixclusterstatus = Invoke-VMScript -VM $cvms[0] -GuestCredential $nutanixlogincreds -ScriptText {/usr/bin/echo 'I agree' | /usr/local/nutanix/cluster/bin/cluster stop} -ScriptType Bash ScriptOutput-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|  /usr/bin/echo: /usr/bin/echo: cannot execute binary file|  2020-12-05 04:30:17 INFO zookeeper_session.py:143 cluster is attempting to connect to Zookeeper|  2020-12-05 04:30:17 INFO cluster:2716 Executing action stop on SVMs 10.65.241.247,10.65.241.248,10.65.241.249

The cloud connect feature enables you to back up and restore copies of virtual machines and files to and from an on-premise cluster and a Nutanix Controller VM located on the Amazon Web Service (AWS) or Microsoft Azure cloud. When a new cloud remote site is created, Nutanix will automatically spin up a single node Nutanix cluster in EC2 (currently m1.xlarge) or Azure Virtual Machines (currently D3) to be used as the endpoint.The Cloud Connect feature enables you to back up and restore copies of virtual machines and files to and from an on-prem cluster and a Nutanix Controller VM on the Amazon Web Service (AWS) or Microsoft Azure cloud. The Nutanix Controller VM is created on an AWS or Azure cloud in a geographical region of your choice. It is a single-node cluster with a 30 terabyte (

Below are new knowledge base articles published on the week of November 29-December 5, 2020.KB 9623 - NCC Health Check: cvm_network_error_check KB 9963 - NCC Health Check: host_boot_disk_uvm_check KB 10232 - Pre-Upgrade Check: test_duplicate_disk_ids KB 10375 - Nutanix Files : Windows clients error "Insufficient system resources exist to complete the requested service" KB 10379 - [Karbon] kubectl commands return "Forbidden" error for domain u

Protection Domain–Based Data Protection is configured using Prism Element. Nutanix supports several types of protection strategies including one-to-one or one-to-many replication. These strategies are as follows:Per-VM Backup. The ability to designate certain VMs for backup to a different site is particularly useful in branch office environments. Typically, only a subset of VMs running in a branch location require regular back up to a central site. Such per-VM level of granularity, however, is not possible when replication

SFP give us freedom of choice and granular control over the media being used in the network segment. Mix and match optic fibre and copper of various throughputs and lengths of the segment. Very convenient and flexible solution and easily replaceable SFP modules.  When troubleshooting issues or during maintenance, the hardware details of the SFP module plugged into a host NIC may need to be identified and verified. Typically the useful information is printed on the SFP label but who has the time for this. More importantly, it would mean taking the SFP module out and that means another maintenance window. Using ethtool on AHV and XenServer will help with retrieving information like vendor, model, part number, serial number, transceiver type, cable length, connector type, signal quality, and more. 

Do you often get confused between alert generated and Nutanix Cluster Check (NCC) failure?Here are some points to understand them both:Alert: Mechanism to report underlying issues in the system. NCC: Tool to check the cluster health and report alert if required. (If there is a NCC failure then it does not always generates an alert.) Three important sections of the above diagram:Notifications received - Cluster Health service.

Below are the top knowledge base articles for the month of November 2020.KB 7503 - NX Hardware [Memory] – G6, G7 platforms - DIMM Error handling and replacement policy KB 4116 - NX Hardware [Memory] – Alert - A1187, A1188 - ECCErrorsLast1Day, ECCErrorsLast10Days KB 4141 - Alert - A1046 - PowerSupplyDown KB 1540 - What to do when /home partition or /home/nutanix directory on a Controller VM is full KB 1113 - HDD/SSD Troubleshooting

Below are new knowledge base articles published on the week of November 22-28, 2020.KB 8564 - NCC Health Check: robo_readonly_state_check KB 8566 - NCC Health Check: robo_cluster_witness_network_check KB 8567 - NCC Health Check: robo_cluster_nodes_ping_check KB 9100 - 2 node cluster upgrade with witness VM unreachable causes downtime KB 9736 - Unregistering hosting AOS/PE Cluster from Prism Central with CMSP Enabled

AHV creating disk with 4k physical sector size. I have a requirement to create 512-bytes sector size. Finding no options parameter with vm.disk_create. Is there any other way to achieve this requriement. 

I created a Project in Prism Central and assigned a bunch of users to it, expecting them to be able to provision their own VMs with cloud-init configs customised to their liking.I found this awesome example code https://www.nutanix.dev/code_samples/create-linux-vm-customised-with-cloud-init/ which shows it can be done with API calls, however, as a user in the Project, there does not seem to be any options in the PC UI that allow me to specify a custom script when creating a VM.Are custom scripts deliberately hidden when using Projects? How are my users supposed to customise their VMs?

I’m looking for a way to expand storage a 6-node VMware cluster (ESX 6.7 U3), adding one or more Storage-only node could be an option. But, as I know, Storage-only nodes come with AHV, so I’d like to understand how I could add those nodes to the existing cluster.Trying to picture the idea, I'm assuming that SO nodes would work as new storage pool and cannot be expanded the existing one, am I right? I'm looking for documentation that give me some direction about the idea I have in mind.Any idea about this? 

Hi Team,I am using “Nutanix_Cluster_as_Built_Windows_v3.1.1” but received below error.“C:\Users\anwarsa\Desktop\Nutanix_Cluster_as_Built_Windows_v3.1.1>generate_document.exe -c "Microland Ltd." -n https://<FQDN>Enter Nutanix Cluster loginLogin: adminEnter Nutanix Cluster Password for login: adminPassword:Generating document for the https://<FQDN> cluster.ConnectionError - https://<FQDN>- HTTPSConnectionPool(host='https', port=443): Max retries exceeded with url: //<FQDN>:9440/api/nutanix/v1/cluster (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x00000000043540F0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed',))”looks like connection error , but wondering if anyone has script or latest version to try again .Thanks

Nutanix AHV is a bare metal Type-1 hypervisor developed by Nutanix. Nutanix AHV can be directly installed on any Nutanix certified OEM hardware server i.e SuperMicro NX, IBM CS , Lenovo HX , HPE ProLiant, Cisco UCS, Dell XC and many more being added along the way.AHV is built upon the CentOS KVM foundation and extends its base functionality to include features like HA and live migration, etc. Full hardware virtualization is used for guest VMs (HVM).In AHV deployments, the Controller VM (CVM) runs as a VM and disks are presented using PCI pass-through.  This allows the full PCI co

We’re over a hump day, and I would like to share an insight that may come handy to those of you that upload binaries to their clusters manually. Did you know that you have seven days to use the upgrade package that you uploaded to the cluster manually before it is removed from the file system? That’s right. Even if you have triggered pre-upgrade checks for the version, but the package is not used it deleted automatically. Make sure to clean up uncompressed software location and check the /home space on a CVM before you re-attempt the upload.KB-10300 Uploaded AOS upgrade binary is unavailable on Prism has more information 

The Acropolis Operating System (AOS) provides the core functionality leveraged by workloads and services running on the platform Building upon the distributed nature of everything Nutanix does, we’re expanding this into the virtualization and resource management space.  AOS is a back-end service that allows for workload and resource management, provisioning, and operations. 

Volumes support ability to boot an Operating System over iSCSI for physical servers. In this configuration, a host can start a supported Operating System from a LUN instead of a Local Disk instance.This procedure describes how to configure Network Adapter BIOS Settings to enable this feature.Important Points:Refer to Intel Ethernet Adapter Vendor Documentation for more details about  Intel iSCSI Boot Configuration. According to Intel, we might be able to configure these settings through Adapter's Properties > Data Options Tab in Microsoft Windows Device Manager. Check Volumes Requirements and Supported Clients for a list of the supported network hardware and clients. Refer to

Below are new knowledge base articles published on the week of November 15-21, 2020.KB 10272 - Prism leader unavailable during LCM upgrade KB 10302 - Mounting ISO image on CVM for HPE platform KB 10308 - Xi-Leap: How to add public floating to a VM in XI Leap KB 10309 - Xi-Leap: How to update public IP of the Onprem VPN Gateway device KB 10311 - Installation of AHV 20190916.294 timeouts if done through PhoenixNote: You may need

A Nutanix cluster relies upon passwordless secure-shell (SSH) connectivity between the controller VMs (CVMs) and the hosts. If you are ever prompted for a password when attempting to connect from a CVM to a host using SSH (instead of being taken directly to the host shell), this could indicate that there is an issue with the SSH key exchange. This could also manifest as other issues such as a hypervisor upgrade failing due to the inability to copy the upgrade bundle to the host. However, please be aware that a prompt for a password could also indicate that a username is being attempted for connection which is not configured for passwordless authentication (i.e. not using the “root” username to login to an AHV or ESXi host).A host SSH key exchange issue can sometimes be resolved by verifying that an entry for the public key from each CVM is maintained within the authorized_keys file o

Hello,Can I please get an explenation of the different commands? Cheers!