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Hi all, did you guys know that AHV to ESXi conversion is only possible from Prism (Convert cluster option) if the cluster was earlier Esxi converted to AHV and being converted back to ESXi. AHV to ESXi conversion is not supported from the Prism. Some pre- requisites for converting AHV to ESXi via prism are-https://portal.nutanix.com/#/page/docs/details?targetId=Web-Console-Guide-Prism-v55:man-cluster-conversion-requirements-limitations-r.html#nref_amd_hlp_k5 However one could always re-image an AHV node to ESXi manually. Before converting the cluster, customer should always migrate the running vms on the AHV cluster to their DR cluster. This can be done using Protection Domains. More information on Protection Domains can be found below: https://portal.nutanix.com/#/page/docs/details?targetId=Prism-Element-Data-Protection-Guide-v511:Prism-Element-Data-Protection-Guide-v511 or also refer KB-3059 https://portal.nutanix.com/#/page/kbs/details?targetId=kA03200000098T7CAI Once cluster is c
Hi all, I’m very new to Nutanix, and pretty new to Ansible. I’ve been tasked with updating / installing guest tools on any machines that need them, and they’d prefer to do it via Ansible. I’d like to be able to have Ansible use the uri module to grab the UUID of a given VM, or grab a list of UUID’s and the associated VM; however I’m having a lot of trouble parsing this information out in a way that Ansible can actually use it. Does anyone have experience with this? Or at least can tell me that there’s a better way to be doing this? Thanks!
Below are new knowledge base articles published on the week of November 17-23, 2019. KB 8193 - NCC Health Check: secure_boot_check KB 8223 - NCC Health Check: sed_key_availability_check and sw_encryption_key_availability_check KB 8513 - VSS Snapshot Fails for Windows VM having Dynamic Volume with Multiple Disk Extents KB 8514 - NCC Health Check: fs_inconsistency_check KB 8569 - Accessing Prism from a browser on MacOS 10.15 "Catalina" blocked by ERR_CERT_REVOKED error. KB 8571 - LCM firmware update unable to commence as VMs are unable to migrate off KB 8580 - When configuring a remote site configuration (Physical Cluster), "vStore Name Mapping" field will show an error "Remote site is currently not reachable. Please try again later." KB 8594 - How to change a snapshot's expiration time to indefinite KB 8600 - Calm License Changes and Grandfathering of Existing Users KB 8614 - Nutanix Files - Deleting TLDs in a NFS distributed share Note: You may need to log in to the Support Portal to v
Nutanix REST API gives flexibility to a developer or an administrator to create scripts which can execute administrative jobs on a Nutanix cluster. Using the API, you can request information about different entities in the cluster or even change some configuration. Everyone at the end of the day wants to make sure that their infrastructure is fully secure. So what about Authentication? What kind of authentication does REST API require? Nutanix support multiple authentication options. Want to know about them and how to configure and use them in your scripts? Give the following KB a readKB-2257 Want to know more about Nutanix REST API and different dev tools we provide? Log on to https://www.nutanix.dev/ Want to know more about Nutanix REST API Explorer and play around(with caution) with the APIs in your Nutanix Cluster? REST API Explorer
In this post we will go through the steps required to shut down and power off all hosts in a VMware vSphere cluster on AOS to perform maintenance or other tasks such as physical hardware relocation. Note: Upgrade to the most recent version of NCC before proceeding with the following steps. Points to consider before attempting to shutdown a vSphere Cluster running atop AOS:Cluster health and Resiliency (Prism Dashboard) vCenter hosted on the same AOS cluster or outside? Any on-going / running protection domain replication? User Virtual Machines shutdown CVM – Controller virtual Machines shutdown Access to ESXi Hosts (SSH & ESXi Host Client)Steps to ShutdownSSH to a Nutanix Controller VM (user : nutanix) and run an NCC health check prior to the scheduled shutdown. If there are any errors or failures, check the relevant KB or contact Nutanix Support.ncc health_checks run_allShut down all the VMs in the Nutanix cluster. Verify if vCenter VM is running on the same Nutanix cluster that y
Maintaining a big infrastructure requires planning and knowing your architecture inside and out.Let's say, sometimes you need to check the upgrade history of different components in your cluster.Sometimes you want to know when you last upgraded AOS or Nutanix Files.The timestamp of the upgrade.Let's say you want to plan a future upgrade and creating a time-line and want to know when you upgraded the software last and at which version.We all need this information, either to maintain a proper record of our cluster infrastructure or to plan the future upgrade.So how can we achieve this?Give the following Knowledge base article a read to find out the upgrade history of different components in your cluster and plan your future upgrades accordingly.KB-1151 Want to know how upgrades work in Nutanix? Try going through the following Knowledge Base to understand how upgrades work in Nutanix architecture.KB-6945 Have a question regarding upgrade workflow? Drop a comment and let’s start a conversa
Below are new knowledge base articles published on the week of November 10-16, 2019.KB 8349 - AHV | VM Goes Offline After Migration KB 8415 - Alert - A1132 - EntitiesSkippedDuringRestore KB 8512 - VM does not boot from Windows OS mounted as CD-ROM if VM already has OS installed on DISK Drives KB 8522 - LCM inventory failure "The requested URL returned error: 404 Not Found" in a dark site LCM environment KB 8525 - Alert - A130202 - AtlasNetworkingHostMemoryReservationFailure KB 8526 - Alert - A130201 - AtlasNetworkingHostConfigError KB 8527 - Pre-check:test_vcenter_connectivity KB 8540 - Pre-Upgrade Check: test_version_check KB 8544 - Pre-Upgrade Check: test_co_nodes_present KB 8551 - DiscoveryOS: Cluster Expansion - Cannot add or discover nodes : IPMI console displays phoenix prompt KB 8553 - How to change TimeZone in Move VM KB 8559 - Alert - A1182 - ShellvDisksAboveThresholdNote: You may need to log in to the Support Portal to view some of these articles.
Nutanix offers a distributed data and control plane, so it’s fairly easy to start, stop and graceful shutdown a cluster. Even, in abnormal / dirty shutdowns, Nutanix cluster has powerful self-healing capabilities - as all data & meta-data is distributed across the cluster which significantly reduces the chances for data corruption or data-loss. However, as a Nutanix Cluster hosts business critical data and applications, it is important to ensure all services stop in a graceful manner and all data + meta-data is consistent. This allows the cluster to be restarted in a healthy - usable state later.There can be several reasons to gracefully shutdown a running Nutanix AHV & AOS Cluster. When shutting down a Nutanix Cluster, following order needs to be followed:User VMs Shutdown AOS Shutdown - Data services / Cluster components CVM Shutdown Hypervisor ShutdownIn this post, we will focus on the shutdown process for a Nutanix Cluster running with AHV (Acropolis Hypervisor).Points to C
Hi,Our metro cluster is running AOS18.104.22.168 (since yesterday’s update from AOS 5.10.8) on x8 NX-8035-G6. During an LCM update for bios and HDD, a node failed due to a bad DIMM. The node pair were eventually evicted from the meta data ring at which point support were supplying a replacement DIMM. After a lot of coaxing both nodes were back in the cluster and hosting vSphere6.5 without any apparent issue, however, since the outage we are being warned in PC\PE and NCC that the active and standby PDs are not mounted on all nodes, even after manually ensuring that the containers are available and connected correctly. Support have advised that this is a known NCC error and just wondered if anyone else in the community has experienced this issue? Thanks in advance
Let’s say you are managing an Infrastructure and have a range of networks defined in your environment and now you have to delete a few.You go to Prism, try deleting the network but get a generic error.So what’s going wrong here?Why can’t you delete a network?Well, one possibility is that if there are NIC connected to the network, it won’t let you delete the network, kind of like a guard-rail.So what can you do to mitigate it?Try giving the following KB a read KB-8234 Want to know more about AHV Networking? AHV Networking Best Practices Still confused about AHV Networking?Drop a comment and let’s start a discussion.
LACP configuration is always a tricky business for every administrator and network engineer and enabling and verifying the configuration of LACP on NX Nodes should not send chills down your spine.First, let’s understand why we need LACP What are the advantages of LACP? A single user VM with multiple TCP streams could use up to 20 Gbps of bandwidth in an AHV node with two 10 GB adapters. A traffic-hashing algorithm such as balance-TCP can split traffic between multiple links in an active-active fashion. Because the uplinks appear as a single L2 link, the algorithm can balance the traffic among bond members without any regard for switch MAC address tables. With LACP, multiple links to separate physical switches appear as a single layer-2 link.Note: To use multiple upstream switches, you must configure MLAG or vPC on the physical switch Points to seriously consider before jumping towards configuring LACP Read the following a guide to understand AHV Networking better AHV Networ
Below are new knowledge base articles published on the week of November 3-9, 2019.KB 7563 - NCC Health Check: ofpfmfc_table_full_check KB 8279 - Alert - A130116 - Automatic Promote Metro Availability KB 8326 - AHV | How to convert VM running Windows 10/2016/2019 from BIOS to UEFI KB 8413 - Alert-A1087-Metadata Volume Snapshot Persistent Failure KB 8451 - Move Migration Plan fails due to duplicate VMUuid KB 8477 - NCC Health Check: remote_site_in_same_datacenter_check KB 8485 - Alert - A130088 - Failed To Snapshot Entities KB 8487 - Alert - A130197 - VmRestorationFailed KB 8492 - Nutanix Files - While trying to update permission using Windows Explorer "Enable inheritance" is not working KB 8495 - Missing vnics after AHV Protection Domain Failover. "Failed to find a network: Unknown network" error KB 8504 - Pre-upgrade check: test_vlan_detection KB 8506 - Era - Unable to register Cluster with due to non-UTC timezone on Era Server VM KB 8520 - Alert - A130199 - VM Migration Failed KB 8521
Cluster data usage grows and occasionally it grows more rapidly then planned and expected before a new node to be added to handle this growth. Nutanix offers data Compression and Deduplication to hold more data in the container, by reducing the stored size and avoiding duplicate data, respectively. Usually Compression should be used first, as de-duplication is recommended only on some specific scenarios (please, check documentation links provided below). Compression: ============ You can enable compression on a storage container. Compression can save physical storage space and improve I/O bandwidth and memory usage which may have a positive impact on overall system performance. The following types of compression are available. - Post-process compression: Data is compressed after it is written. The delay time between write and compression is configurable, and Nutanix recommends a delay of 60 minutes. If compression is enabled in "Post-process", then existing data will also
NOTE: If you are running AOS 5.11.x Please upgrade to AOS 22.214.171.124 or higher before enabling the Remote Support TunnelWhat is the Remote Support TunnelThe Remote Support Tunnel allows Nutanix SREs and Engineers to access a cluster via a Secure SSH Tunnel.We can also send a public SSH key to allow access without the need for the cluster password to be exchanged. Enable the Remote Support Tunnel In Prism, go to; Settings, by clicking the gear wheel or from the Dashboard selection Select Remote Support Enable for n hour(s) (maximum of 24 hours)After 5 - 10 minutes, go back or refresh the Remote Support setting screen to see the Status. The Connection Status should be reporting “Success”. If the status is reported as Disabled, (as seen below), please review the following Knowledge Base Article for Troubleshooting options. Nutanix Remote Support Tunnel Troubleshooting Guide
Could we get some more documentation on this command?Clone-NTNXVirtualMachineOne of the required parameters is -SpecListI would like some clarification on this parameter and how to use it. Is this an array of values? Am I linking to a csv or json file?An example would be nice.Using the UI, I currently clone a reference image to create vm’s and I would love to get a PS script to work to do the same. I can get it to work with the ACLI commands but PS is a bit more versatile and I believe I could get it to do more if I understood this command and specifically this parameter better.
Hello Masters, Today I have this alert: System Non-Root Partitions Space Usage HighI read this KB https://next.nutanix.com/installation-configuration-23/cvm-non-root-partitions-space-usage-high-clear-space-safetly-33597and check my filesystem and all files inside of this directories are ok (small sizes):/home/nutanix/data/cores/ /home/nutanix/data/binary_logs/ /home/nutanix/data/ncc/installer/ /home/nutanix/data/log_collector/My problem look to be at the file “/home/nutanix/data/logs/ncc_log_collector.log”. It has actually this size (14 and 6 GB): $ allssh du -h ~/data/logs/ncc_log_collector.log================== 192.168.150.92 =================5.7G /home/nutanix/data/logs/ncc_log_collector.log================== 192.168.150.94 =================14G /home/nutanix/data/logs/ncc_log_collector.log================== 192.168.150.96 =================238M /home/nutanix/data/logs/ncc_log_collector.logthe file don’t show error, only INFO. It safe to delete it ?? can I delete it using “rm /home/n
Occasionally you will need to deal with nutanix support who needs access to your cluster but not over a webex or zoom sessions. You can always setup a remote support channel so nutanix SREs can perform troubleshooting in the background, leaving you free to work on other more important issues in your environment. Simply run:To check if it is already set up:nutanix@cvm$ ncli cluster get-remote-support-statusTo start itnutanix@cvm$ ncli cluster start-remote-supportTo close itnutanix@cvm$ ncli cluster stop-remote-support For troubleshooting instructions, please refer to public nutanix KB titled: “Nutanix remote Support Channel Troubleshooting Guide”.
In order to check Nutanix AOS, AHV or 3rd Party Hypervisor Compatibility with certified hardware, you can visit the Nutanix portal and select "Compatibility Matrix". Home > Documentation > Compatibility MatrixYou can check compatibility for:Hardware model, for e.g. NX, HPE, Dell, Cisco UCS AOS Version Hypervisor Version (AHV, ESXi, Hyper-V, XEN)You can filter by hardware model, AOS version or Hypervisor Version.Visit Compatibility Matrix (Nutanix portal account required) to check for hardware compatibility with AOS and Hypervisors (AHV / ESXi / Hyper-V / XEN).From the same page, you can also check AHV Guest OS compatibility as well.
Below are new knowledge base articles published on the week of October 27-November 2, 2019.KB 7837 - How to update expired licenses KB 8266 - Alert - A1037 - Node Forwarding Metadata Requests KB 8275 - Alert - A130161 - Protection Rule Conflict Occurred KB 8369 - AHV: Create Tenable Core with Nessus VM from OVA KB 8388 - Expected Inputs for Alerts Notify Creation on API v3 KB 8393 - CVM inaccessible via SSH after removing node or destroying cluster KB 8434 - Host Kernel panic due to BIOS setting change (CPU Configuration settings) KB 8439 - LSI Firmware Upgrade for Hyper-V 2012R2 KB 8441 - Snapshot Chain Height has exceeded the threshold limit KB 8445 - AHV: Ubuntu Cloud Image VM creation KB 8446 - Portable Foundation Failing "ERROR Exception in <ImagingStepInitIPMI(<NodeConfig(x.x.x.x) @af70>)" KB 8453 - Alert - A1044 - DiskBad KB 8454 - High utilization noticed on CVM loopback interface KB 8459 - [Karbon] Password with $ symbol breaks K8s cluster deployment KB 8460 - Alert-
Below are the top knowledge base articles for the month of October 2019.KB 4141 - Alert - A1046 - PowerSupplyDown KB 1540 - What to do when /home partition or /home/nutanix directory is full KB 4905 - NCC Health Check: notifications_dropped_check KB 4188 - Alert - A1050, A1008 - IPMIError KB 4409 - LCM: (LifeCycle Manager) Troubleshooting Guide KB 1113 - HDD/SSD Troubleshooting KB 4116 - Alert - A1187, A1188 - ECCErrorsLast1Day, ECCErrorsLast10Days KB 4519 - NCC Health Check: check_ntp KB 2090 - AHV | Host and Guest Networking KB 7503 - G6, G7 platforms with BIOS 41.002 -DIMM Error handling and replacement policy KB 4158 - Alert - A1104 - PhysicalDiskBad KB 2608 - Cluster Health Checks Incorrectly Show Warnings and Failures KB 4273 - NCC Health Check: aged_third_party_backup_snapshot_check KB 3523 - How to create a Phoenix ISO or AHV ISO from a CVM or Foundation VM KB 4541 - Alert - MetadataDiskMountedCheck KB 1863 - NCC Health Check: sufficient_disk_space_check KB 3357 - NCC Health Ch
In some scenarios, we might have a need to find the disks associated with a virtual machine hosted on a Nutanix AHV Cluster. Nutanix offers a distributed storage fabric, which forms a large storage pool across “N” number of nodes. we then create containers for different types of workloads or we can easily use a single container as well.Virtual Machines are created via Prism Management and all vDisks associated with the VMs are hosted on the distributed storage pool. On a Nutanix AOS Cluster, Acropolis service runs across the cluster to manage virtual machine operations and configurations. As both Data & MetaData is distributed across the cluster, we can use the “Acropolis” service on almost any CVM to retrieve virtual machine information running on any node.In order to interact with the Acropolis service, Nutanix offers “acli”. a powerful set of commands for virtual machine operations across your Nutanix cluster.acli offers tab-completion once inside the acli shell or we can execu
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