How It works

Hello,I am writing to inquire whether PRISM Central supports the same REST APIv3 webhooks as PRISM Element. The documentation for the webhooks I am referring to can be found here: https://portal.nutanix.com/page/documents/details?targetId=AHV-Admin-Guide-v5_10:ahv-webhooks-event-notifications-c.htmlThanks and regards,Mathias Guillemot

Below are the top knowledge base articles for the month of September 2024.KB 1536 - NCC Health Check: disk_online_check KB 3827 - Alert - A130087 - Node Degraded KB 8885 - Alert - A15039 - IPMI SEL UECC Check KB 8514 - NCC Health Check: fs_inconsistency_check KB 6945 - How Upgrades Work at Nutanix KB 8094 - NCC Health Check: disk_status_check KB 7837 - This cluster has expired licenses. To be compliant. View licensing details. KB 5505 - Long Term Support (LTS), Short Term Support (STS) and Extended Short Term Support (eSTS) Releases (Applicable only to AOS) KB 4639 - How to place CVM and host in maintenance mode KB 9437 - How to restore a node from LCM firmware upgrade failure using lcm_node_recovery script KB 14298 - Account has been locked. Please contact portal-accounts@nutanix.com error at the Support Portal login page KB 1113 - HDD, SSD, and HBA troubleshooting KB 5987 - Reclaiming Licenses KB 9132 - Alert - A1305 - Node is in degraded state KB 4141 - Alert - A1046 - PowerSupplyDo

Below are new knowledge base articles published on the week of September 22-28, 2024.17111 - Failed to upgrade the PC to 2024.2 during migration of DVP data to Vdisk 17351 - NC2 on Azure - Dummy vNETs 17354 - NDB - Cloning a SQL database fails while executing VSS command with "VSS_E_NO_SNAPSHOTS_IMPORTED" 17471 - How to remove entities created during Nutanix Object Store provisioning 17472 - NDB Oracle Database patching fails if software PD is not present 17504 - Citrix VDIs created with the same name as golden image 17529 - Windows VM fails to boot with INACCESSIBLE_BOOT_DEVICE error as disks are offline 17536 - Nutanix Files | NFSv3 mounted exports may have degraded performance 17544 - Shibboleth IDP Metadata XML File Fails Import into PC 17552 - Cluster expansion fails for ESXi clusters used in combination with LACP 17557 - Cisco UCS ISM - Foundation Fails at 1% with Node Configuration Error 17568 - Move - Broadcom VMware VDDK framework alternative download page. 17572 - Prism Centr

Below are new knowledge base articles published on the week of September 15-21, 2024.KB 16959 - NDB - MSSQL DB server registrations fails with error "Could not create SSL/TLS secure channel" KB 17124 - AOS - Network topology is not populated after upgrading to AOS 6.8 KB 17363 - Self-Service Pre-upgrade_check: test_mpi_enabled_dm_upgrade KB 17394 - Foundation Central - Deployment fails on CISCO HCI device with exception "InstallerVM failed to install OS" KB 17440 - Handling UI Warnings for Resource Limits and Usage with Default Cluster Sizes KB 17478 - NDB - Sanitized Snapshot creation using API KB 17487 - When restoring a VM with Veeam on a new cluster, it may fail to power on with "No host has enough available resources" error KB 17503 - Prism Central – Upgraded stalls at the 'Freeing SMP alternatives memory' stage during the boot phase KB 17533 - Poor Network performance in Linux VMs on AHVNote: You may need to log in to the Support Portal to view some of these articles.

An administrator is tasked with enabling Calm 3.2.0. What is the minimum version of Prism Central that should be running?  PC.2020.8  PC.2020.11  5.17  5.15  

Below are new knowledge base articles published on the week of September 8-14, 2024.KB 16327 - NCC Health Check: network_controller_host_certs_expiry_check KB 17032 - SSH access fails after upgrading to ESXi 7.0 Update 3d KB 17278 - VMs with Windows Credential Guard enabled may enter paused mode due to the "emulation failure" error KB 17359 - Incorrect use of "Prism Central Installation in a Non-Nutanix ESXi Environment Guide". KB 17360 - FNS 5.x version not offered for upgrade in LCM when running FNS 4.x or earlier due to current policy version KB 17441 - CALM Runbooks stuck in Pending state KB 17453 - AOS, PC, Flow or FSM upgrade may hang at running preupgrade checks KB 17461 - Mantle service on CVM utilising excessive CPU due to expired certificates KB 17468 - Klas Voyager VM4.0 - Foundation may fail with "IndexError: bytearray index out of range" KB 17474 - NVIDIA GRID GSP firmware timeout causes host crashes with Lovelace family GPUs KB 17480 - Alert - A200611 - NetworkSecurityRul

Which command can administrator can run to find the correct VLAN ID from the CVM?manage-ovs ovs-vscl

I'm surprised how RDMA connect different memories through NIC without needing CPU. Memory is volatile storage and NIC is network I/O. they can't perform anything and can't understand application needs! 

I’m a newbie to Nutanix products and would like to understand more on the Nutanix web interface in regarding to the security standard. Is it unique session ID assigning to each session from the browser? Best regards, YLW 

Below are new knowledge base articles published on the week of September 1-7, 2024.KB 16965 - Users getting logged out automatically every 15 minutes from Prism Central KB 17060 - Files UI Fails to load on PC After PCVM Scale-Out KB 17066 - Nutanix Files - A160202 - files_deprecated_share_check KB 17199 - Nutanix Move Error: "Failed to perform list on the entity with name as - Source" while trying to migrate SMB file shares KB 17265 - Images uploaded from Prism Central remain in an inactive state due to missing PUT request KB 17326 - How to locate the NDB provisioned MSSQL server disks in Prism KB 17335 - The network-crashcart script on AHV 20230302.x versions might fail with the " [Errno 1] Operation not permitted: '/etc/resolv.conf'" error KB 17353 - Static threshold User Defined Alerts (UDA) logic KB 17375 - Self-Service UI is displaying blank page when trying to create Approval Policy KB 17379 - Nutanix Files - unable to configure file share for Remote Desktop Services User Profile

I have learned that Guest VMs transmit data to AHV and AHV reroute data to CVMs. Then, CVMs transmit data through PCIe passthrough (I haven’t got this point because CVMs still VM. so, it can’t bypass its hypervisor) to HBA hardware. After that, HBA transmits data to disks. But I want detailed data flow that explain hardware and software (like Curator, Medusa… etc) data flow from guest VM to the disks because it will be useful for troubleshooting and confidants while working with Nutanix Solution. Could anyone help me?

Below are the top knowledge base articles for the month of August 2024.KB 3827 - Alert - A130087 - Node Degraded KB 1536 - NCC Health Check: disk_online_check KB 8453 - Alert - A1044 - PathOffline KB 8885 - Alert - A15039 - IPMI SEL UECC Check KB 8094 - NCC Health Check: disk_status_check KB 8514 - NCC Health Check: fs_inconsistency_check KB 7837 - This cluster has expired licenses. To be compliant. View licensing details. KB 1113 - HDD, SSD, and HBA troubleshooting KB 4141 - Alert - A1046 - PowerSupplyDown KB 3786 - Alert - A1081 - CuratorScanFailure KB 4639 - How to place CVM and host in maintenance mode KB 6945 - How Upgrades Work at Nutanix KB 11794 - NX Hardware [Memory (CECC)] - G6, G7, G8 platforms - hPPR Diagnosis KB 2090 - AHV host networking KB 5505 - Long Term Support (LTS), Short Term Support (STS) and Extended Short Term Support (eSTS) Releases (Applicable only to AOS) KB 8098 - How to renew your expired licenses or update your cluster with renewed licenses KB 14298 - Acco

Below are new knowledge base articles published on the week of August 25-31, 2024.KB 16873 - Nutanix Database Service - NDB Agent Service Registration & Upgrade KB 17144 - Time Machine Operation Restrictions from NDB 2.6 onwards KB 17333 - DKP/NKP - How to secure secure access to prometheus node exporter KB 17356 - LCM: IVU based upgrade fails with "Unable to boot ivu into cvm" KB 17373 - An ncli command on Windows machines fail on AOS and Prism Central KB 17389 - CMSP - CVE-2024-41110 : Docker Engine Authorization Plugin Bypass (CVE-2024-41110) Not Impacting Prism Central KB 17396 - Nutanix Database Service (NDB) Support Policy KB 17406 - The "Task <UUID> cannot be updated." error is shown when trying to abort or cancel the Acropolis task in AOS 6.7 or newer KB 17411 - DR - Restoring VMs with Multiple NICs from Third-Party Backup Snapshots May Cause Loss of Network ConfigurationNote: You may need to log in to the Support Portal to view some of these articles.

Hi While troubleshooting a performance issue with some VMs on the cluster, we noticed that the cluster-wide latency, as shown in the Prism graph on the front page, was around 23ms on average. This is significantly higher than our usual 10-12ms. Upon further investigation by support, the issue was traced to two VMs with high I/O activity, writing large blocks of data (over 1MB in size). To troubleshoot, we added the following graphs for each VM: Storage controller bandwidth (MB/s) Storage controller latency (ms) I have a few questions: Why is the term “bandwidth” used instead of “throughput”? My understanding is that bandwidth refers to the capacity (size of the pipe), while throughput is the amount of data passing through it per second. If the average cluster latency is high, wouldn’t this impact other workloads? Does the term “storage controller” refer to the CVM?Thanks in advance 

Hi,I am checking out Nutanix as a hypervisor. I understand however from our technical supplier that Nutanix will not be able to scale a GPU server using a storage server. Namely, I have a GPU server with some limited storage, which I would like to extend with a storage server(s). These would then be linked through a dedicated switch to the GPU server.He tells me that Nutanix is not good for that, and that we would have to go with VMWare. I understand that this has to do with hyperconverged infrastructure (HCI). However, I cannot imagine that Nutanix does not have a solution for such use-case. My question therefore is: can a GPU server be extended with a storage server using Nutanix?Thanks!

Does anyone have any documentation on the upgrade steps for nutanix firmware with LCM? I want to perform a firmware upgrade on my Nutanix cluster.   

Below are new knowledge base articles published on the week of August 18-24, 2024.KB 16427 - NDB - When DB Server provisioning operation is resubmitted, it will fail if the same DB Server VM name is used KB 16684 - NDB | Missing required prerequisites for logger KB 16685 - NDB | rsyslog-ndb not configured KB 16686 - NDB | rsyslog-ndb not started KB 16687 - NDB| rsyslog-ndb not stopped KB 17056 - Nutanix Move: Unable to list VMs of a VMware ESXi source cluster KB 17106 - NDB - Time Machine Transition KB 17158 - Foundation central reports Failed to fetch the API Key error while connecting to Cisco Intersights KB 17159 - Prism Central Unregistration precheck is fails on Prism element Hosting Objects-Lite Service KB 17217 - [IPMI-1009] CPU1 Temp, Upper Critical - going high - Assertion KB 17298 - Nutanix Files - Disallow NFS clients to query the list of exported shares, or filesystems, available on a File Server instance. KB 17299 - NDB - Oracle DB Registration Operation Fails Due to Parte

Hello,I’m somewhat new to Nutanix and have a lot to learn obviously.  I think this is my first post/question.We have an old cluster running a single VM for Prism Central that used to work for a 3 node cluster.  I cant recall when it stopped working.  The cluster is fine, the nodes are fine, Prism portal on each node runs fine.My thought… Q1) Does the Prism Central web service require credentials to start properly (see orange highlight below)?  Maybe I somehow need to reset the nutanix or root passwords that the HTTP service is trying to use/connect?Q2) Any other tips to try to help get PC working again?Q3) Can I simply de-register the PC from the cluster, then try to redeploy a new one or over top of the existing one?  Would that process have an impact on the VMs currently running in the cluster? Prism Central Status from PE = Disconnected Warning : PE-PC Connection Failure Nutanix v5.17.3 NCC v4.40 LCM 3.0.1 I can SSH to the VM A reboot of the VM does not help.  Same conditions afterw

Hi TeamI am trying to create a VM in a specified container by using Prism Central V3 API. I am passing the container details in the storage_config → storage_container_reference of the payload. But what i observed that the VM is always getting created in the SelfServiceContainer.I am using Nutanix Community Edition.AOS : 6.5.2 LTSPrism Central : pc.2022.6.0.11Can you please let me know why new VMs are not being created in the specified storage container and instead end up in the SelfService Container despite passing the correct container UUID in the VM creation API payload? ThanksAkash

I recently built a Nutanix CE 3-node cluster on ESXi. The cluster’s up and I want to add a 4th identical node so I can replace node 1 (I have another thread on the disk skew issue I’m seeing there), but the precheck cassandra_ssd_size_check fails when preparing to add the new node (SSD tier on nodes [u'xx.xx.xx.xx'] is not sized to accomodate expected metadata growth on cluster).I wonder if this is a bug because the same NCC Health Check (cassandra_ssd_size_check) runs every hour on the cluster without any problems, and the new node is identical in its disk sizes to the existing nodes.Is there a log somewhere that would tell me what it checked and how/why it failed?Is there a way to verify which disk was assigned to Data and which to CVM boot during install? All of the commands I can thus far locate just tell me info on the virtual disks.

I am doing 4 node AHV cluster decommission. I did all the steps and finally gave cluster destroy and ensure it was destroyed completely. I want to do a factory reset of all the nodes where the hypervisor /CVM configurations like hostname, IP etc will be wiped out. Please let me know the procedure for this. Thanks.

Below are new knowledge base articles published on the week of August 11-17, 2024.KB 16493 - Alert - A160152 - file_server_vg_delete_check KB 17087 - Entity Centric : Planned failover of syncrep protected VM hangs at 5% due to connectivity issues with the Anduril Port KB 17117 - Multiple drives are frequently marked offline on HPE DX360 KB 17190 - CVM in Paused State KB 17233 - Cluster Quick Access stays on loading for AD users with special characters in Prism Central KB 17258 - AHV - Microsoft NLB in unicast mode loses network connectivity after the host startup KB 17262 - Prism Central - "noVNC encountered an error" error is displayed when launching ESXi VM console on pc 2023.4 KB 17290 - Flow Network Security (FNS) task "Network security rule import" stuck running at 0% if any address group was renamed between imports KB 17294 - Prepare Database Server VM for NDB Software Profile Creation - RHEL and EnterpriseDB EPAS KB 17324 - Nutanix Files - FSM Upgrade to 5.0.0.2 failsNote: You m

Currently, i see that prism java client and other java libraries with version of 4.0.1-beta-1 are dependent on spring-boot (2.5.14). Since it includes many vulnerabilities, is there a version with the latest springboot version or version above 3.0? Thanks

I am preparing for Nutanix NCA 6.5 Exam, can someone tell me Nutanix test drive is free for practice or not?

HP DL380P Gen 82x Xeon E5 2667128GB RAMboot: 128GB SSDhypervisor: 1TB SSDstorage: 1TB HDD=============================Im attempting to create a single node cluster. Everything appears to install fine. I selected the “create single node cluster” option in the installer, and entered my local DNS server. I waited the ‘15 minutes’ after install for the cluster to start itself. I do see ports opening on the server, but not 8000: Starting Nmap 7.94 ( https://nmap.org ) at 2024-08-15 16:04 Atlantic Daylight TimeNmap scan report for 10.110.10.101Host is up (0.0022s latency).Not shown: 960 filtered tcp ports (no-response), 33 closed tcp ports (reset)PORT     STATE SERVICE22/tcp   open  ssh111/tcp  open  rpcbind2099/tcp open  h2250-annex-g2100/tcp open  amiganetfs2103/tcp open  zephyr-clt9876/tcp open  sd9877/tcp open  x510MAC Address: 50:6B:8D:F7:85:3A (Nutanix)==============================================If I run a `cluster status` I see this:nutanix@NTNX-cbf1e3ab-A-CVM:10.110.10.101:~$ clust