id stringlengths 1 25.2k ⌀ | title stringlengths 5 916 ⌀ | summary stringlengths 4 1.51k ⌀ | description stringlengths 2 32.8k ⌀ | solution stringlengths 2 32.8k ⌀ |
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KB12744 | NUS card missing on the license portal or the message “No compatible AOS clusters were found” is displayed when attempting to apply Nutanix Unified Storage licenses | A gap between the availability of Nutanix Unified Storage (NUS) licenses and the software that supports them results in a license violation until a software update is available. The products remain fully functional. | The new Nutanix Unified Storage portfolio provides customers with more flexibility and simplicity than ever before. To achieve this, the new portfolio implements a new set of licenses that entitle customers to use the various products.The new Unified Storage licenses will be available to purchase from Feb 15, 2022. In ... | Updating to Prism Central 2022.3 and AOS 6.1.1 or later, when available, will enable customers to apply the Nutanix Unified Storage licenses. Invalid license violation warnings will no longer be displayed.
|
KB13938 | File Analytics - Scenarios of Unexpected Read event may be seen | This article introduces some scenarios that unexpected read event on FA when navigating to a Files share. | In the FA console -> Audit Trails -> Search by User or Client IP, we may notice some unexpected Read Operations events. The customers confirmed that they never opened those files. The logs of FSVMs and FAVM don't include such Read events.The below scenarios can create unexpected Read operations events on our FA Audit ... | Scenario 1: It has been fixed on the AFS 4.0 version of ENG-392213 https://jira.nutanix.com/browse/ENG-392213, which filters the read request smaller than 4K.Scenario 2: This is the expected behavior of MS Windows. Scenario 3: This is the expected behavior of MS Windows. ENG-340736 https://jira.nutanix.com/browse/ENG... |
KB7646 | Modify One-node backup cluster snapshot retention | This KB explains One-node backup retention of expired snapshots. | Nutanix clusters keep one expired snapshot to avoid a full replication, by default.
For one-node backup clusters ( SNRT https://portal.nutanix.com/page/documents/details?targetId=Prism-Element-Data-Protection-Guide-v6_7:wc-cluster-replication-single-node-c.html), the logic is different and the retention policy is to r... | If you do not wish to retain 5 snapshots in your one-node backup cluster consider engaging Nutanix Support at https://portal.nutanix.com https://portal.nutanix.com/ and refer to this knowledge base article. |
KB5890 | Identifying the issue --All disks are offline and all services are down on CVM with Medusa ERROR : Cassandra gossip failed | This KB describes Cassandra gossip failed issue in case of SAS address mismatch in hardware_config.json | This is a scenario in which:
CVM is UP but all the services on that specific CVM is down reporting Medusa ERROR Cassandra gossip failed.All the disks are offline on that specific CVM
Cluster status shows all CVMs are UP, but the services may be down on the CVM which has issues.
nutanix@CVM:~$ cluster status|grep -v ... | If there is a mismatch of SAS Addresses to the ones in hardware_config.json, follow the procedure below:
Download the Phoenix ISO from the Nutanix Support Portal https://portal.nutanix.com.Reboot the Host to Phoenix using IPMI's KVM Console.Run the following command to make sure that Phoenix has rebuilt the md-arrays... |
KB15538 | LCM Inventory setup failed. Reason: None | Unable to initiate inventory operation: Failed to perform the operation as Request to run LCM inventory failed with root task UUID xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx and error message (Inventory setup failed. Reason: [None]) | In rare cases you may see the following error message when attempting to conduct an LCM inventory:Unable to initiate inventory operation: Failed to perform the operation as Request to run LCM inventory failed with root task UUID xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx and error message (Inventory setup failed. Reason: [No... | Workaround: Go into LCM > settings and de-select the Enable HTTPS check box and click save.
This will allow LCM to update to the latest and then allow the inventory process to complete.If the above workaround does not resolve your issue, or if there are any reservations with using this solution, please consult The Lif... |
KB13078 | How to configure IPMI Active Directory Authentication for G8 NX- platforms | This document describes how to set up Active Directory based authentication (LDAP) for IPMI access on G8 series NX- Platform | This document describes how to set up Active Directory based authentication (LDAP) for IPMI access on the G8 series NX- Platform. | The Active Directory authentications method on G8 differs from G5/G6/G7 (Prior to G8, see KB-2860 https://portal.nutanix.com/kb/2860) thus must configure the Remote Group (DistinguishedName) in the IPMI. Also due to a known issue, if the user is a member of multiple large groups, the login may fail so recommended the ... |
KB16156 | Unable to update Distributed vSwitch due to orphaned VM | DVS cannot be synced as an orphaned VM is configured to utilize vSwitch. | In vCenter, if a VM is labelled as orphaned, it means that the VM storage is no longer connected to the host. The VM cannot be edited or reconfigured until the storage is reconnected to the host.
At the host level, this also means that if the VM is configured to use port groups on the Distributed vSwitch, the vSwitch... | In vCenter, take a screenshot of the VM inventory confirming the name of the orphaned VM. That way if the VM must be re-registered to the inventory, you know the VM name.Remove the VM from inventory. This will make the port groups on the vSwitch no longer in use, and allow the vSwitch to sync.To add the VM back to the ... |
KB16742 | Cisco UCS - Imaging via Foundation Central may fail with Error "Failed to receive the first heart beat of the node" | This KB article talks about an issue where Imaging via Foundation Central may fail with Error "Failed to receive the first heart beat of the node" in Foundation Central based on the UI and logs | This KB article talks about an issue where Imaging via Foundation Central may fail with Error "Failed to receive the first heart beat of the node" in Foundation Central based on the UI and logsIdentification of the issue : 1. Below message would be seen on the UI : Failed to receive the first heartbeat of the node2. On... | Steps to configure LACP :
Make sure there is no LACP configuration on the switch side, then perform node imaging using FC with LACP.Enable LACP in Cisco N9K switch configuration.Use Nutanix KB https://portal.nutanix.com/page/documents/kbs/details?targetId=kA0320000004H0vCAE to enable LACP fallback on the switch side... |
KB16703 | AHV upgrade may fail with the "Could not back up /etc/selinux/targeted/contexts/files/file_contexts.local.bin: Got passed new contents for sum" error while running Puppet. | AHV upgrade fails with the "Could not back up /etc/selinux/targeted/contexts/files/file_contexts.local.bin: Got passed new contents for sum" error while running Puppet. | AHV upgrade fails with the "Could not back up /etc/selinux/targeted/contexts/files/file_contexts.local.bin: Got passed new contents for sum" error while running Puppet.We see Puppet failure in the /var/log/upgrade_config.log:
24 Mar 04:20:46 INF Running puppet on upgrade
The "Could not back up /etc/selinux/targeted/con... | Nutanix Engineering is investigating this issue - please collect the full log bundle covering the upgrade failure timeframe and post an update to ENG-647460 https://jira.nutanix.com/browse/ENG-647460. |
KB13061 | Reverse Cluster conversion on ESXi 7.0u3/8.0.c fails with Prism showing error "Finalizing conversion operations" at 80% | This KB talks about an issue where Reverse Cluster Conversion fails from AHV to ESXi 7.0u3/8.0.1c. Cluster conversion from AHV to ESXi would go through. | Scenario 1
Cluster conversion on ESXi 7.0u3 build 19193900 Jan2022 failed with AOS 5.20.2. Prism shows the error "Finalizing conversion operations" at 80%.
If you are hitting this issue, you would see:
Conversion will be stuck with the message "Finalizing conversion operations at 80%".
Virtual Switch configurati... | For AOS 6.7 and later:
Follow the below steps under Nutanix Support's supervision:
Log in to the vCenter.Search for the CVM (Controller VM) in the vCenter, which was supposed to be up and running. If it is in orphaned state, then 'Remove the vm from inventory'.Log in to the host (using ssh) for which the conversion g... |
KB14720 | NDB - Listing and changing the TimeZone settings in NDB | How to list or change the TimeZone settings in a NDB server. | The NDB web interface does not provide a way to list or change the configuration of the TimeZone configured on the server. To list the current settings and to change them, use the era-server CLI. | Log in to the NDB server using SSH as an era user. If this is a High Availability NDB installation, ensure you are on the NDB server and not on any of the HA proxies.Enter the era-server shell:
[era@localhost ~]$ era-server
List the current Timezone:
era-server > era_server list timezone
To change the settings, run:
er... |
KB15420 | LCM Inventory operation failing with Failed to get public key from zknode | This KB covers an issue with LCM Inventory operation failing with Failed to get public key from zknode and Direct upload failing with Could not read V2 public-key from Zookeeper error signatures | Scenario 1 : Customer performs an LCM inventory operation on a connected site cluster failing with the error signatures as below.
Failed to get public key from zknodeCould not read V2 public-key from Zookeeper
ERROR 86770800 ergon_utils.py:903 Failing task [1169ebfd-7ea7-4367-5871-ece0bf92ef15] kRunning -> kFailed, R... | Scenario 1 :
Cause : Issue is caused due to a race condition because of which LCM is proceeding without creating the public_key zknode and doing the verification of master manifest.
This issue is resolved in LCM-2.7. Please upgrade to LCM-2.7 or higher version - Release Notes | Life Cycle Manager Version 2.7 https:... |
KB5487 | NCC Health Check: ngt_installer_version_check | The NCC health check ngt_installer_version_check is run against the VMs that have NGT (Nutanix Guest Tools) installed and compares the version of NGT on the VM to the one on the cluster. If the NGT version on the cluster is higher than the one installed on the VM, the check generates a warning. | The NCC health check ngt_installer_version_check compares the version of NGT (Nutanix Guest Tools) installed on the VMs with the NGT version on the cluster. If the NGT version on the cluster is higher than the one installed on the VM, this check generates a warning.
In order for this check to work, the Nutanix Guest T... | To resolve the issue, upgrade the NGT version on the VMs to the latest version available on the cluster, either using Prism Central https://portal.nutanix.com/page/documents/details?targetId=Prism-Central-Guide:mul-ngt-pc-upgrade-t.html or Prism Element https://portal.nutanix.com/page/documents/details?targetId=Web-C... |
KB13729 | Understanding UEFI, Secure Boot, and TPM in the Virtualized Environment | This KB article describes the set of security capabilities tailored for virtualized environments. AHV provides software implementation for Unified Extensible Firmware Interface (UEFI), Secure Boot, and Trusted Platform Module (TPM) that are used by guest OSs such as Windows 11 Operating System (OS). | Microsoft's latest release of Windows requires an AHV environment to support UEFI, Secure Boot, and TPM. It is observed that Microsoft Windows 11 https://www.microsoft.com/en-us/windows/windows-11-specifications documentation does not distinguish between Windows running on a bare machine versus Windows running in a hy... | The following table describes the actions that you need to perform to enable UEFI, Secure Boot, and TPM support for Windows running on AHV:
For information on system requirements to host Windows 11 OS, see Windows 11 System Requirements topic in Microsoft Technical Documentation.[
{
"Actions": "Enable UEFI",
... |
KB15961 | Unable to login to Nutanix Portal "Forbidden. You do not have permission to access this page." | When attempting to access "my.nutanix.com" the error "Forbidden. You do not have permission to access this page." is returned. | The attempt to access "my.nutanix.com" page results in the error "Forbidden. You do not have permission to access this page"(my.nutanix.com/page/error/403).Example screenshot: | Email portal.accounts@nutanix.com for assistance. Include the login name used. |
KB9214 | HYCU backups taking long time to complete due to phase of Volume Group creation | null | Hycu AOS backups on ESXi (or AHV) takes hours per VM to complete due to the phase of Volume Group creation as reported by Hycu. This KB will provide you with information on what logs to check on HYCU appliance for troubleshooting this issue. I have provided a real example of logs seen in my case. Note: Here, Hycu logs ... | If you see logs matching above scenario, consider engaging HYCU support. HYCU support should be able to help the customer in reducing the number of concurrent operations (based on their analysis) in order to mitigate this issue.For example: In this case, Hycu helped customer in reducing the number of concurrent operati... |
KB8417 | Alert - A1122 - NonSelfEncryptingDriveInserted | Investigating NonSelfEncryptingDriveInserted issues on a Nutanix cluster | This Nutanix article provides the information required for troubleshooting the alert NonSelfEncryptingDriveInserted for your Nutanix cluster. For an overview about alerts, including who is contacted and where parts are sent when an alert case is raised, see KB 1959 http://portal.nutanix.com/kb/1959.
IMPORTANT: Keep y... | Troubleshooting
Check the Prism web console for the disk alert.
Log on to the Prism web console.From the web console, select Hardware > DiagramHover the mouse over the problematic drive and a pop-up message will displayed with error message
Follow the steps under Resolving the Issue #resolving_the_case to fix it.
... |
KB6389 | Nutanix Files - Preupgrade Check failure "Failed to transfer afs software bits" | The following KB explains the reasons for errors when pre-upgrade checks are executed at the time of a Nutanix Files upgrade and also basic troubleshooting to help resolving issues yourself before contacting Nutanix Support. | Nutanix Files Pre-Upgrade checks fails stating following error message
All File Server Upgrades completed, Failed to transfer afs software bits | Failure occurs when the software is about to copy to the AFS storage container. You might see the following error message in the UI.
Transferring AFS software bits to the container <container_name> failed. Please check the container access attributes and retry the upgrade.
This occurs because the file server stor... |
KB6242 | ESX host high cpu utilization caused by stale python processes | ESX hosts may have an issue with high cpu utilization caused by many stale python processes running on the host. | ESX hosts may run into an issue with excessive CPU utilization caused by many stale python processes.
Checking esxtop, you will see many python processes consuming an excessive amount of CPU. It is normal to see python processes running on the host, but it will be fairly obvious when there is an abnormal amount of thes... | Refer to ISB-113 https://confluence.eng.nutanix.com:8443/display/STK/ISB-113-2020%3A+ESXi+hostd+and+kernel+issues+triggering+out-of-memory+condition+in+SSH+Resource+Group for a detailed explanation of the stale python processes, CPU usage spikes, how to handle live issues, and resolution details. |
KB6345 | NCC check summary number mismatch between ncc command line and Prism UI | The number of NCC checks in the summary report after running “ncc health_checks run_all” is different in Prism UI and in the ncli report. | The NCC checks can be run from the command line using the ncc command "ncc health_checks run_all". They can also be run from Prism using the Health page > Actions > "Run NCC Checks" task.
Both give summary reports at the end of their run. Below is a sample of a summary report from the ncc command.
+------------------... | This is valid and expected behavior. The ncc command line reports on the number of NCC plugins while the Prism View Summary window reports on individual NCC checks. An NCC plugin can have multiple checks on it. Because the command line reports on plugins, the numbers would be less than Prism, which reports on individua... |
KB13483 | OVA export from Prism Central fails with "NfsError: ^X" | OVA export from Prism Centralfails with "NfsError" | In some cases, AHV VMs cannot be exported to OVA from PC.On Prism Central VM, the ~/data/logs/metropolis.out shows the OVA export task failed with NfsError error:
E0703 01:03:11.503519Z 15799 vm_export_task.go:486] OVA package create subtask failed with err code 4: Traceback (most recent call last):
On CVMs, the log ... | This has been found to be due to ENG-323989 https://jira.nutanix.com/browse/ENG-323989, where we are encountering delays due to the oplog limits for write and single-threaded workflow for reads.The workaround is to apply Anduril gflag, max_ova_read_retries. Consult with an STL/Sr. SRE since the value of the gflag can... |
KB8465 | Alert - A801003 - VpneBgpDown - eBGP session between VPN gateway peers down | Investigating the VpneBgpDown Alert on a Nutanix cluster. | This Nutanix article provides the information required for troubleshooting the alert A801003 - VpneBgpDown for your Nutanix cluster.Note: Nutanix DRaaS is formerly known as Xi Leap.
Alert Overview
The A801003 - VpneBgpDown alert occurs when eBGP session between the on-prem VPN gateway and Xi VPN gateway is down. This... | Troubleshooting and resolving the issue
Review the error details provided in the alert message.
Ensure that the following ports are open between on-premises and Xi VPN gateway devices:
IKEv2: Port number 500 of the payload type UDPIPSec: Port number 4500 of the payload type UDPBGP: Port number 179 of the payload typ... |
KB14522 | Slow start time of Siemens NX application on AHV due to FlexLM network query | Slow start time of Siemens NX application on AHV (about 60 seconds) while the same applications start three times faster on ESXi (about 20 seconds), caused by a FlexLM query to an unavailable APIPA address | After installing Siemens NX application on a Windows 10 VM running on AHV, launching the application takes much longer compared to the same application on a Windows 10 VM running on ESXi. On AHV, the application takes about 60 seconds from clicking the start menu icon to the application's main window appearing, compare... | The suggested workaround is to block access to 169.254.169.254 in Windows Firewall so that accessing the IP fails immediately instead of waiting to time out.This is documented in the FlexNet Publisher Knowledge Base: FNP calling IP address 169.254.169.254 https://community.flexera.com/t5/FlexNet-Publisher-Knowledge-Ba... |
KB15144 | NKE cluster scrubbing failed | NKE clusters PreUpgradeChecks fail with message "NKE cluster scrubbing failed". | Trying to upgrade Kubernetes or node OS-image might fail during the PreUpgradeChecks phase with the error message:
PreUpgradeChecks: preupgrade checks failed: unable to accept the request. NKE cluster scrubbing failed, check error logs and rectify.
The failing precheck prevents the upgrade from starting.
| Prism Central hosts the Karbon_core service. This service manages NKE clusters and does a scrub operation on all registered NKE clusters when the service starts and/or is restarted. The scrub operations are performed to ensure all NKE cluster nodes are configured properly; for instance, if there are any proxy-related c... |
KB3493 | How to expand a cluster when IPv6 or multicast is disabled | This article provides recommendations for expanding a cluster when IPv6 or multicast is disabled. | The expand cluster feature leverages Nutanix Discovery Protocol (NDP) to discover new nodes and determine their configuration. It uses IPv6 multicast destination addresses (224.0.0.251 / ff02::1).
When the discover-node process is initiated, the CVM (Controller VM) sends out multicast packets. The foundation process o... | Choose one of the following options:
Upgrade to AOS 6.5 or later and retry expand cluster operation. Manual discovery of HCI nodes is supported in AOS 6.5 or later. You need to provide the CVM IP of the new node. Refer to Expanding a cluster https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide... |
KB10962 | Post PC-DR steps when Recovery Plan Jobs are in running state | This article provides the steps to follow after a PC-DR event, if there had been Recovery Plan Jobs running before launching disaster recovery of PC to a replica PE. | After a PC-DR, you may find the following validation error while running a Recovery Plan Job.
The maximum number of VMs that can be recovered concurrently in an Availability Zone is <number of entities based on recovery>. When executing Recovery Plans concurrently, make sure that the sum of the entities across those R... | SummaryAfter performing PC DR:
Identify if any Recovery Plan Jobs (RPJs) are stuck in running state and abort them.Execute the script to take magneto service out of recovery mode.Resume operations.
Step 1:
Find all the Recovery Plan Jobs that are in a Running state, by logging into Recovered PCVM and running the bel... |
KB7880 | All disks on a node show red blinking LEDs | All disks on a node show red blinking LEDs | Customer reports an issue that all of the disks on a node have red blinking LEDs, as shown in the picture below.
All disks on one node of NX-8035-G6 show red blinking LEDs.
Disks are mounted and accessible. No alerts in Prism and all disks passes smartctl test.
Firmware is the same as the other nodes in the cluste... | Below will the sequence of steps to be checked before replacing the chassis/node.
Turn the individual drive LEDs on:off from Prism to help identify if these were enabled by customer for any maintenance. Check status from Prism -> Hardware -> Diagram -> Node -> Click each disk and see towards bottom right of diagram op... |
KB10210 | Move Windows7 VM stuck on the bootup page for the prism console | null | Use Move 3.6.0/3.6.2 migration Windows7 VM(Gen1) from Hyper-V cluster(2012-R2) to AHV Cluster(5.15.2), the Windows 7 VM can be power on when the first bootup on AHV cluster. But it will be stuck on the following page when reboot it. Actually the vm has started normally, we can login through windows RDP.The issue does... | Remove the remote software( Remote Access for VSPACE SERVERS https://www.ncomputing.com/) from the windows 7 vm that running on AHV Cluster, the issue for startup screen stuck was resolved |
KB13025 | Bulk NGT install Failing in Linux VM's | Bulk NGT Installations on Linux VM's throiugh Prism Central Failing with "Internal Error message" | Bulk NGT installation on Linux VMs from Prism Central is failing with "Internal Error Message"Scenario 1:One possible trigger for this scenario is when the customer configured their UVM to display additional messages during user login. One example we encountered in the field is when the customer has configured a timeou... | Scenario 1:
Ask the customer to remove any banners or additional login messages from displaying when a user logs in to the system.Scenario. 2:NGT ISO extraction occupies 521 MB on the /mnt filesystem so we should have at least this amount of space available on the filesystem.A workaround is to mount the CD-ROM and inst... |
KB10204 | NCC Health Check: esx_product_locker_setting_check | The NCC health check esx_product_locker_setting_check checks for ESXi ProductLocker settings. | The NCC health check esx_product_locker_setting_check checks for ESXi ProductLocker settings. This check will generate a FAIL if the host contains a ProductLocker symlinked to any container.This check was introduced in NCC 4.1.0.
Running NCC Check
Run this check as part of the complete NCC Health Checks
nutanix@cvm$... | Open SSH connection to one of the CVMs as "nutanix" user and execute the below command to identify the /productLocker symlink:
[nutanix@CVM] hostssh 'ls -latr / | grep ^l'
Example output:
[nutanix@CVM] hostssh 'ls -latr / | grep ^l'
Map the container:
[nutanix@CVM] hostssh 'ls -latr /vmfs/volumes'
In the above exa... |
KB15460 | File Analytics - Manage File Analytics option gives error while fetch the FA details | Manage File Analytics option gives Error while fetching File Analytics VM | You can encounter an issue where clicking the "Manage File Analytics" tab in your Prism Element (PE) at the File Server section results in a loading pop-up that eventually gives an error message "Error while fetching File Analytics VM."This problem can also cause the file analytics software version to not display on th... | It typically indicates a problem with the communication or configuration between your Prism Element and the File Analytics VM. If you're experiencing an issue with the above symptoms, engage Nutanix Support https://portal.nutanix.com/ for assistance. |
KB13923 | Uploaded AOS installer is not recognized when the installer file name is not in a valid format during the foundation process | AOS installer file is not recognized with the message "No files have been added" during the foundation procedure, although the file is successfully uploaded into CVM or Foundation VM. This KB explains the symptom and workaround to address the issue. | In the step "AOS," where an AOS installer file can be manually uploaded during the foundation procedure, Although the file is successfully uploaded, it cannot be selected to use having the message saying "No files have been added" if the file name is not in a valid format. For issue identification, please see the below... | The issue can happen due to the invalid format of the installer file. In the below screen capture, for example, the file name does not have ".tar" in it, which is the main cause of the issue. It can be fixed by fixing the file name to the correct format. ENG-511350 https://jira.nutanix.com/browse/ENG-511350 has been f... |
KB15760 | Loading the Admin Center and Switching between Apps freezes for AD admin users | Customers logged in with AD admin users may experience screen freeze or stuck loading page when attempting to access the Admin Center or Switching between Apps in Prism Central. | Customers with role mappings referencing duplicated group entries in IDF and IAM DB(Cape) might face issues accessing the Admin center page and switching between Apps in PC.The AD admin users had a role mapping that wasn't migrated to IAMv2, even though logs indicate all groups were migrated. The customer then recreate... | As a result of existing duplicate user_group entities with the same DN, aplos will constantly try to update abac_user_capability and may hit a race condition due to the same cas value on 2 IDF updates. This issue is resolved in the pc.2023.3 version through ENG-569735 https://jira.nutanix.com/browse/ENG-569735.However... |
KB13622 | NDB legacy DR replication failing due to snapshot naming | This KB talks about NDB replications failing due to snapshot naming in legacy DR | Nutanix Database Service (NDB) based snapshots may fail if the snapshot created is named as per Entity Centric snapshots and not as per Legacy DR snapshots.
Legacy DR snapshots are named as "<remote_cluster_name>:<snap_uuid>"Entity Centric snapshots are named as "remote_<remote_site_ip>_uuid:<snap_id>".
This issue is ... | To fix the issue, remote_name object for Legacy DR should be listed before remote_name for Entity Centric. To achieve this, follow the steps below.
Unprotect VMs from Leap Protection Policies. Make a note of the VMs in protection policies to add back later. Disconnect Availability Zone. Reconnect availability zone and ... |
KB12468 | Acropolis service crash due to large number of volume groups | Acropolis service crashing due to very large amounts of volume groups present. | Following an AOS upgrade when a large quantity of volume groups are present on a cluster, the acropolis service can become unstable and enter a crashloop due to failure to complete master initialization within the specified timeout. When this occurs, one or more of the following crash signatures could be generated in a... | The acropolis instability can be eased by deleting any extraneous volume groups on the system, preferably below the thresholds noted in the table above based on the upgrade path in question. If removal of volume groups is infeasible and acropolis is in a crash loop, you may need to tune one or more of the following acr... |
KB15387 | NDB - Archive WAL files are present in /tmp in postgres ha node | Archive WAL files are present in /tmp in postgres ha node due to Log Catchup operation leaving behind temporary files | Noticed Archive WAL files are present in /tmp in postgres HA nodee.g.
[postgres@pg_node1 tmp]$
Reviewing the above files, they can be read like text files, while actual Archive WAL files are in binary format | The logcatch operation determines the start time and end time from the PostgreSQL WAL files. In order to determine the timestamps it dumps the WAL files content into the /tmp directory one by one until until it gets the required information, after that it deletes the dump files. But in one of the work flows it leaves b... |
""ISB-100-2019-05-30"": ""ISB-019-2016-10-10"" | null | null | null | null |
KB13522 | Single SSD Repair fails on G8 node stating "Rescue CVM did not come up" | An out-of-date utility package is causing the "Repair Disk" feature in Prism and the single_ssd_repair script in the CLI to fail on all G8 series nodes. | Due to an out-of-date utilities package in the Rescue ISO, disks on G8 series nodes cannot be inventoried within the Rescue Shell used by the SSD Repair features. This causes tasks for the Prism-based "Repair Disk" feature https://portal.nutanix.com/page/documents/details?targetId=Boot-Metadata-Drive-Replacement-Singl... | The issue is fixed with the AOS 6.5.3 release. Upgrade the AOS to the latest version.
If you have encountered this problem while recovering from a Single SSD failure and have confirmed that the model undergoing repair is the NX-1065(N)-G8, contact Nutanix Support https://portal.nutanix.com/ and cite this KB article ... |
KB10237 | Nutanix Disaster Recovery(Leap) NearSync Transitioning out due to stale Legacy Remote Site config | Nutanix Disaster Recovery NearSync may transition in and out of NearSync due to a stale legacy remote site which can not be garbage collected. | Description:Due to what is found as incorrect handling of remote site types both in Cerebro and Stargate (As seen in ONCALL-9517 https://jira.nutanix.com/browse/ONCALL-9517 / TH-4770 https://jira.nutanix.com/browse/TH-4770) the following scenarios can be observed:
Cerebro is unable to garbage collect the legacy remot... | Change the RPO for the Protection Policy from NearSync (1 - 15 minutes) to 1 Hour RPO to allow for Legacy Remote Site to be garbage collected.Check that cerebro_cli no longer lists the legacy Remote Site which had a status of "to_remove: true"
nutanix@CVM:~$ cerebro_cli list_remotes
Change the RPO for the Protection ... |
KB14145 | [Objects] S3 application(s) may perform poorly due to Envoy load balancer VMs running out of iptables netfilter connection limits in its conntrack table | During rapid connection open/close workload, LB VMs were running out of iptables netfilter connection limits in its conntrack table. | S3 application(s) queries might timeout or get terminated. You can verify following error signature to identify if the cluster hitting the same issue described in this document.Follow below steps to get envoy IPs:
SSH to PCVM.Run the following command from PCVM to get object cluster list:
nutanix@PCVM:~$ mspctl cluste... | The issue has been fixed in MSP-2.4.4, bundled with PC 2023.3. Suggest an upgrade to the same. If you see described symptoms, please follow the below-mentioned workaround and please engage an Object SME before applying the workaround on the customer's environment.Workaround:Please follow below steps for all the Envoy V... |
KB16833 | Nutanix Files: Adding a Nutanix Files Cluster to Rubrik Security Cloud | This KB provides the general guidelines to add a Nutanix Cluster to Rubrik Security Cloud | Details required to add a Nutanix Cluster to Rubrik Security Could is provided in the following screenshot: | Please refer to the following guidelines for filling up the required details:
Rubrik Cluster: Select your respective Rubrik cluster from the drop-down menu.System Name: Select "Nutanix File Server"IP or Hostname: Add the File Server FQDN as the hostname. The following steps can be following to get the file server domai... |
KB14555 | Nutanix Objects or PC with enabled CMSP | iscsi failed to mount the target volumes due to 0-sized iscsi db files present on the nodes | The iscsiadm might fail to mount the target volumes on the kubernetes node due to presence of an empty scsi db file. The observed error: " iscsiadm: Could not stat /var/lib/iscsi/nodes//,3260,-1/default to delete node: No such file or directory." | In environments requiring mounting volumes via Nutanix CSI driver or Nutanix DVP plugin, CSI/DVP may fail to mount iSCSI volume if the iSCSI file-based database contains a malformed 0-sized file.Nutanix CSI and Nutanix DVP rely on iscsiadm to mount volumes. iscsiadm maintains a file-based database. It was observed in t... | Workaround:
Remove 0-sized iscsi database files identified in the "Identification" section:
root@objects-master-0:~# sudo rm /var/lib/iscsi/nodes/iqn.2010-06.com.nutanix\:<traget-id>\:nutanix-docker-volume-plugin-tgt0/<disp>\,3260\,1/default
Re-run discovery so files are regenerated
root@objects-master-0:~# iscsiad... |
{ | null | null | null | null |
KB3051 | Adding Linked Child Account on Portal | This article describes the Linked Child Account or "Login As" feature within the Nutanix Portal and how to enable it. | What is a Linked Child Account?
If at any time a reseller or partner requires access to the account of an end customer within the Nutanix Portal, they can submit a request to enable the Linked Child Account feature.
Once the Linked Child Account is added to a partner's account, the partner can switch to the linked ac... | Authorization to access a Linked Child Account
To enable the Linked Child Account feature, the reseller or partner must first obtain written authorization from the customer in the form of an email or letter granting access to their account. The following information should be included in the authorization.
Name of th... |
KB5717 | NCC Health Check: recovery_plan_entity_limit_check / recovery_plan_vm_limit_check | The NCC health check recovery_plan_entity_limit_check / recovery_plan_vm_limit_check raises a critical alert if the number of VMs in a recovery plan exceeds the maximum limit. | Note: From NCC 4.3.0 onwards, recovery_plan_vm_limit_check has been renamed to recovery_plan_entity_limit_check.The NCC health check recovery_plan_entity_limit_check / recovery_plan_vm_limit_check raises a critical alert if the number of entities in a recovery plan exceeds the maximum limit. This check is executed fro... | The NCC check reports the Recovery Plan name on FAIL if the number of entities in a Recovery Plan exceeds the threshold.
The total number of entities that are supported in a recovery plan are:
AHV to AHV = 200ESX to ESX = 200AHV to Xi = 200 ESX to Xi = 100
Note: Each recovery plan has a limit of 500 entities. If y... |
KB14069 | Cassandra is in forwarding state after CVM wiped by phoenix | Cassandra might get stuck in forwarding state after CVM was wiped by phoenix instead of the reconfigure option | After wiping the CVM with phoenix and adding it back to the cluster with boot_disk_replace script, the CVM is stuck in forwarding mode and cassandra_keyspace_cf_check ( KB 4274 https://portal.nutanix.com/kb/000004274) health check will fail with the following message
FAIL: No metadata disk found on this node
nutanix... | To fix this issue use the commands below for the SSD:
nutanix@cmv:~$ sudo cluster/bin/hades stop
This issue is reported in ENG-409047 https://jira.nutanix.com/browse/ENG-409047, and is fixed in AOS 6.1 and above. |
KB16788 | Unable to configure Recovery Plan over Stretched Network with Traffic Tromboning | This article explains the DR recovery plan cannot be configured by pc.2023.3 over the stretched network with traffic tromboning. | Problem Description
Configuring the DR Recovery Plan fails over the stretched network with Traffic Tromboning.
Symptom
As of May 2024, configuring the Recovery Plan fails with an "Invalid network settings" message over the stretched network with Traffic Tromboning.
About Traffic Tromboning:
Traffic Tromboning represe... | Nutanix is aware of the issue and is working on a solution.
Workaround:
There is no workaround available. The "Non-stretch networks" option allows recovery plan configuration to be saved. However, the VMs take the dummy default gateway value during failover. |
KB12621 | Flow Network Security Visualisation not displaying inbound traffic to a VM | Flow Network Security Visualisation may not display inbound traffic to a VM if the source of the packet is another VM running on same cluster which has a different outbound security policy applied to it. | Flow Network Security visualisation might not display inbound traffic to a VM if the source of the packet is another VM running on same cluster which has a different outbound security policy applied to it.The expected traffic should be visible as outbound traffic in the other security policy that is applied to source V... | This visualisation behaviour is by design. When investigating network traffic behaviour through Flow Network Security, be sure to check if the source and destination traffic fall under multiple security policies and remember to check the source outbound traffic in addition to the destination inbound traffic. |
KB11621 | VMs deleted after registered on the remote site during a PD migration with stuck "delete_vm_intentful" in src site | VMs getting deleted after getting registered on the remote site during a PD migration with stuck "delete_vm_intentful" in src site | After a PD migration VMs will get registered on the DR site and will get deleted within a couple of mins.In this case after a PD migration we will see "delete_vm_intentful" tasks stuck in the Src cluster.
nutanix@CVM:x.x.x.89:~$ ecli task.list include_completed=false
After the VM is registered on the remote cluster w... | This issue is resolved in:
AOS 6.5.X family (LTS): AOS 6.5.4AOS 6.7.X family (STS): AOS 6.7
Upgrade AOS to versions specified above or newer.WorkaroundWe need to restart the Anduril service across the cluster so that its cache gets cleared and then it will request for a new IP.
nutanix@cvm$allssh "genesis stop anduril ... |
KB13409 | Stale vCenter entry in vpxd.cfg causing failure to register Prism Element to vCenter | Stale vCenter entry in vpxd.cfg causing failure to register Prism Element to vCenter | If the vCenter Appliance hostname is changed after installation then the vCenter server config (vpxd.cfg) may contain a stale entry pointing to the old hostname. This would cause the Prism Element "Register vCenter" workflow to fail with an error "Unable to register extension". This also means that any VM operations wi... | If the vCenter was renamed after installation, the vCenter configuration (/etc/vmware-vpx/vpxd.cfg) may still contain a stale entry referring to the old vCenter name. If the owner has been updated, this UUID may be incorrect as well. This stale entry would cause failure to register Prism Element with vCenter.
Check t... |
KB13449 | Nutanix Database Service | Debugging Windows DB Server VM Provisioning Failures | This article describes debugging Windows DB server VM provisioning failures. | Note: Nutanix Database Server (NDB) was formerly known as Era.
Scenario 1: Sysprep fails when antivirus software is installedSysprep of a VM could fail when antivirus software is installed in the system.
Operation logs /home/era/era_base/logs/drivers/sqlserver_database/create_dbserver/<operation_id>.log or /home/era/... | Resolution 1: Sysprep fails when antivirus software is installedAntivirus software should be disabled on the software profiles prior to provisioning.
Disable or delete the antivirus software service (see the antivirus software's documentation on how to do this).Take a new software profile (see Creating a Software Pro... |
KB9581 | Unable to login after IPMI password changed. | Recently changed password will not work when you try to validate by logging into IPMI console or run commands via IPMI using new password. |
Recently changed IPMI password doesn't work while logging into IPMI console or running IPMI tools commandsThe use of script/cmd may not work as expected to change the passwords for all hosts in the cluster.Some of the common causes include using longer passwords than the supported character limit or using unsupported... | Changing IPMI password and password requirements are documented here https://portal.nutanix.com/page/documents/details?targetId=Hardware-Admin-Guide:har-password-change-ipmi-t.html
BMC versions older than 3.40 didn't support all of the special characters (KB- 1737 http://portal.nutanix.com/kb/1737)
Verify the BMC v... |
KB15980 | Prism crashes due to SIGABRT - terminate called after throwing an instance of 'std::bad_weak_ptr' - what(): bad_weak_ptr | Investigation into Prism Crashing due to SIGABRT - terminate called after throwing an instance of 'std::bad_weak_ptr' - what(): bad_weak_ptr | Prism dead flagged in zookeeper_monitor.INFO
I20230827 17:00:59.871104Z 5947 cluster_state.cc:662] 172.20.33.53:9080 is dead
When Prism was dead on the above dates, it was dead due to SIGABRT in prism.out logs below:
terminate called after throwing an instance of 'std::bad_weak_ptr' what(): bad_weak_ptr
Note tha... | This issue is resolved in:
AOS 6.6/6.6.1
Advise to upgrade unless SIGABRT event and traces are not all exactly matched to the ENG. |
KB6084 | NCC ERR: Invalid Raw SEL log | Customers may report this on OEM Platform(Specifically Lenovo) while running NCC: ipmi_sel_check | Part of the ipmi sel check is to check for OCP related events.Powersupply events are parsed using ipmi raw sel list.NCC expects powersupply related events to follow below signature based on Super Micro Platforms:
ESXI/AHV:POWER_SIGNATURE = "0x04 0x08"REG_POWER_ISSUE_SIG = "0xff"REG_POWER_RESTORE_SIG = "0xef"OCP_POWER... | Seems like fix as per discussion in below ENG is to only NX platforms included in NCC 3.6.2.If customer is running Non-Nutanix Platform, ask customer to upgrade NCC and can ignore this test.
Note: As of 29/8/2018 - testing is not fully done. Please check ENG and update NCC if fix is in place
If NCC is upgraded to... |
KB15991 | NCC check idf_db_to_db_sync_heartbeat_status_check fails due to stale Nutanix Files entries | NCC check idf_db_to_db_sync_heartbeat_status_check reports and error due to stale Nutanix Files entries | After a Prism Central restore operation, the NCC check idf_db_to_db_sync_heartbeat_status_check fails with the below error:
Detailed information for idf_db_to_db_sync_heartbeat_status_check:
These UUIDs are minerva protection policy UUIDs, as we can confirm from the below output:
nutanix@PCVM:~$ links --dump 'http://0... | A fix is available in Nutanix Files 4.4.x / FM 4.4 as per ENG-614746 https://jira.nutanix.com/browse/ENG-614746.As a workaround, it's possible to manually remove the minerva policies UUIDs from the zknode with the below steps.WARNING: Support, SEs and Partners should never make Zeus, Zookeeper or gflag alterations wit... |
KB9925 | How to delete all data sent to Nutanix by Pulse | This article describes the process to request the deletion of data that was collected by Pulse on the Nutanix side. | Sometimes it may be required to delete the data collected by Nutanix Pulse for various legal or security compliance reasons. Even though Nutanix does not collect any personal data by Pulse, we understand that it may be required to delete the data anyway and we respect that right.
It is important to note that if Pulse ... | Here is the procedure to request the Pulse data deletion:
Disable Pulse on the cluster. In Prism Element, go to Settings > Pulse > de-select Enable and click Save.
Open a case with Nutanix Support and ask to delete all Pulse data. |
KB16011 | Nutanix DR | Approval Policy changes with SecureSnaphot | This article describes how to add/ remove users from approval policy in SecureSnaphot | The purpose of Secure Snapshot feature is to protect the snapshots/recovery points from a malicious attacker who compromises the administrator id by deleting or modifying the snapshot configuration.Currently in AOS 6.8 and pc.2024.1 there is a limitation with the SecureSnaphot feature that does not allow managing users... | SRE needs to ensure that the request to add/remove user to the approval policy is authentic.SRE needs to send the email below to receive approval from majority of the approvers in the approval policy to go ahead with adding/removing user from the approval policy. If the customer claims no other approvers are available ... |
KB7258 | Hypervisor upgrade stuck at 0% for pre-upgrade checks on Single node cluster | Hypervisor upgrade stuck at 0% pre-upgrade checks on Single node cluster with no progress or warning of what might be stalling it. | 1 click Hypervisor upgrade stuck at 0% for pre-upgrade checks on Single node cluster causing the customer to have no idea why it is stuck.host_preupgrade.out just states that:
2019-12-17 17:56:27 INFO zookeeper_session.py:131 host_preupgrade is attempting to connect to Zookeeper
After figuring out that zookeeper is the... | This issue can occur if any of the DNS servers are not able to be pingable or are down. Check the Name Server configuration in prism and remove the non-pingable DNS server and then refresh the Prism Element screen. Once that has been cleared out you will see the task no longer running. Go back to the settings menu and ... |
KB14796 | Performance | HPE Gen-10 Cascade/Intel M50CYP Using Gen-10 Plus Ice-Lake Systems Experience Degraded Performance With Sleep C-States Enabled | It has been observed that Nutanix clusters running on HPE or Intel hardware may experience performance degradation due to CPUs entering sleep C-States regardless of BIOS settings. This KB provides diagnostics that help identify if this issue is occurring and the steps required to resolve it. | So far, this issue has been seen on HPE Gen-10 Cascade and Intel M50CYP systems, however, it may impact other systems using Gen-10 Plus Ice-Lake CPU's.
When sleep C-States (C2 and lower) are active, this can introduce operational delay when threads are scheduled on physical CPU cores operating at reduced power.
In a... | This issue is resolved in:
AOS 6.5.X family (LTS): AHV 20220304.441, which is bundled with AOS 6.5.4AOS 6.7.X family (STS): AHV 20230302.1011, which is bundled with AOS 6.7.1
Upgrade both AOS and AHV to versions specified above or newer.To verify that sleep C-States are being entered, SSH into an AHV host and execute... |
KB7084 | NCC Hardware Info: show_hardware_info | The NCC Hardware Collector is a module within NCC whose purpose is to periodically scan and inventory detailed information about all hardware components on each node in the cluster. This information is cached and is readily available on demand for immediate reference during hardware triage events, e.g. DIMM/drive repla... | The NCC Hardware Collector is a module within NCC whose purpose is to periodically scan and inventory detailed information about all hardware components on the particular host in the cluster. This information is cached and is readily available on demand for immediate reference during hardware triage events, e.g. DIMM/d... | Below are the data that are captured by NCC show_hardware_info command:
Nutanix Product Info
Manufacturer
Product Name
Product Part Number
Configured Serial Number
Chassis
Bootup State
Manufacturer
Serial Number
Temperature
Thermal State
Version
Node Module
N... |
KB16979 | vCenter server user authentication failed alert on Prism Central | vCenter Server User Authentication Failed alert on the PC for vCenter monitoring may occur in one of the scenarios when the vCenter user authentication is changed but not updated for the vCenter monitoring configuration. | Prism Central reports an alert below:
vCenter Server xx.xx.xx.xx User Authentication Failed for user <domain>\<username>
This alert could be triggered by a potential change in user authentication for vCenter or vCenter monitoring. Even after re-registering vCenter with the username in the alert or a different user, th... | Delete vCenter monitoring from the PC and re-configure it with the correct username and password.
For PC versions 2023.3 and newer
Refer to the 'Modifying Application Monitoring' section in the linked document below for instructions on deleting vCenter monitoring. Multiple links for different PC versions are provided f... |
KB12697 | Prism Central eth0 resets to DHCP settings after Upgrade / Reboot | After an upgrade or reboot a Prism Central VM may lose eth0 configuration and reset to DHCP. | After an upgrade of Prism Central or a reboot of the VM eth0 may lose its ifcfg-eth0 configuration and reset back to DHCP. If you re-configure ifcfg-eth0 file it will again be lost on reboot.This issue was tracked by ENG-419625 which appears to be a regression of ENG-352043. | Solution: Upgrade to pc.2022.1.The issue is solved and delivered on pc.2022.1 According to Release Notes https://portal.nutanix.com/page/documents/details?targetId=Release-Notes-Prism-Central-vpc_2022_1:top-resolved-issues-r.html.Workaround:If the upgrade is not possible, the Current workaround steps are below.
Find ... |
KB17139 | Objects UI not accessible due to aplos service certificate expired | Customers may experience an issue where the aplos service certificate has expired, resulting in the Objects UI being stuck at loading | Customers may experience an issue where the aplos service certificate has expired, resulting in the Objects UI being stuck at loading. This affects all PC versions.
Identification
Objects UI is stuck at loading, as below aplos is unable to query aoss service manager using certificate based authentication. Aplos logs i... | The service certificates are valid for two years since the installation or the last upgrade of Prism Central. If customer is running end of support life Prism Central, all the service certificates could have expired. Upgrade Prism Cental to a newer version to resolve the issue. |
KB15805 | NDB | Database Server VM registration fails with error “Unsuppored configuration: OS or DB_SOFTWARE drives must not used as DATA Drives” | Database Server registration fails in NDB with error “Unsuppored configuration: OS or DB_SOFTWARE drives must not used as DATA Drives” | When we try to register Database server VM to NDB, The operation fails with the below error
'Unsuppored configuration: OS or DB_SOFTWARE drives must not used as DATA Drives'
The below messages are also seen in the DB-Server eraconnection.log (dbserveripaddress/logs/common/eraconnection.log):eraconnection.log
[202... | The above configuration of having OS or DB_software and data drives on the same physical/logical volumes is not recommended.
Ensure that the following requirements are met before registering a database server VM with NDB.
OS or database software disks must be distinct from the data disks.
For general requiremen... |
KB14186 | Nutanix Files - Manual DNS verification fails even if the DNS entries are properly created | Attempting to perform a Manual DNS verification operation may fail even if DNS entries are properly created. | A manual DNS verification in Nutanix Files version 4.2 may fail even if the records are correctly created.When clicking on the "Verify" button, it keeps loading until it eventually fails without returning an evident error.When opening the developer tools, you will see the verify-dns-entries API call returning a 400 err... | This issue was identified and fixed already.To get the fix, upgrade to Nutanix Files 4.2.1 or higher. |
KB10893 | Nutanix Kubernetes Engine - Forwarded logs are missing fields | Logs forwarded from Nutanix Kubernetes Engine clusters are missing kubernetes.* fields on remote Elasticsearch | Nutanix Kubernetes Engine (NKE) is formerly known as Karbon or Karbon Platform Services.Customer using Karbon 2.2 enables log forwarding on deployed Kubernetes clusters.Customer will notice that on the remote Elastic endpoint, kubernetes.* fields are missing from Kubernetes clusters running fluent-bit image v1.5.3 or ... | The fix is present in Karbon 2.2.2. The customer should upgrade to the latest version of Karbon.
Before applying the workaround, please engage with your local Karbon SMEPlease check the Kubernetes cluster to confirm the issue is related to this KB:- verify that the Karbon Kubernetes cluster has log-forward enabled
nu... |
KB4198 | Override default stargate behavior for disk cloning on ESXi (thick provisioned to thin provisioned) | Customers might need to override default Stargate behavior (thick provisioned disks become thin after cloning) for accountability / management reasons. | As KB1591 describes ( Virtual disk provisioning types in VMware with Nutanix storage /articles/Knowledge_Base/Virtual-disk-provisioning-types-in-VMware-with-Nutanix-storage ), Stargate by default will create a thin provisioned disk after a cloning operation (assuming the clone is deployed to the same container), even ... | "WARNING: Support, SEs and Partners should never make Zeus, Zookeeper or Gflag alterations without guidance from Engineering or a Senior SRE. Consult with a Senior SRE or a Support Tech Lead (STL) before doing any of these changes. See the Zeus Config & GFLAG Editing Guidelines ( https://docs.google.com/document/d/1FLq... |
KB13541 | Nutanix Files - Async DR - Protection Domain failover operation fails to deactivate the PD when the container has been renamed | Nutanix Files - Async DR - PD Failback fails to deactivate the Files PD during a failover operation if the Files container name is not in the form "Nutanix_<fs_name>_ctr" and when FSM version = 2.2.0. | During a PD failover or failback operation in the deactivate step we construct the container name using the FS name. Due to a software defect in FSM version 2.2.0 the code incorrectly assumes that the container name will be always in the form "Nutanix_<fs_name>_ctr" however the container name may have manually been cha... | This issue has been resolved in FSM 2.2.2 and later. No workaround is approved to resolve the issue without an upgrade.
|
KB6017 | NGT installation, removal, upgrade, or an update error on Windows VMs: 0x80070643 Fatal | Resolve issues with NGT upgrades when uninstall MSI is missing from system drive or C:\ drive. | The errors below are seen after an AOS upgrade or when re-installing Nutanix Guest Tools (NGT) on a Windows VM.
Prism Alert for the VM:
NGT on <VM_name> should be upgraded.
NGT Setup errors:
The feature you are trying to use is on a network resource that is unavailable
0x80070643 - Fatal error during installatio... | Additional options
Before doing a registry cleanup for NGT, attempt the following options:
Clone the VM and install NGT on the cloned VM.Contact Microsoft to remove NGT using Microsoft internal tools (Fixit, for example).
Registry cleanup
Take a snapshot of the VM before modifying the registry. In Prism > VM tab > ... |
KB13478 | Stargate fatal because of epoll thread stuck in TcpConnection::FlushPendingWritesInternal | Stargate service crash because of epoll thread stuck in a TCP connection on CVM. | Random Stargate service crash has been seen with below FATAL signature on CVM due to rare instances. In most cases, there is no service impact and no cluster wide storage down. However, there is chance of VM restart on local AHV host because of iSCSI timeout.
Symptoms
Stargate service would restart with error "Watch ... | Solution
Recommend upgrading AOS the the version having the fix for ENG-480410 https://jira.nutanix.com/browse/ENG-480410, namely 6.5.3.5 or later on LTS, 6.7 or later STS. |
KB13726 | [JPKB] Windows VMでPrism または API から実行した電源操作が動作しないことがある | AHVで稼働している Windows VM は、スクリーン セーバーが有効である、もしくはACPI要求への応答の構成が原因で電源操作が動作しない場合があります。 | この KB は KB 5828 の日本語版です。最新の内容については KB 5828 をご参照ください。AHV 上で動作する Windows VM に対して、Prism から、または API 経由でゲスト再起動やゲストシャットダウンなどの電源操作を実行すると、これらのアクションが動作しない場合があります。Prism やログにはエラーメッセージは表示されません。その後、同じ電源操作を実行すると正常に完了することがあります。この動作は一般的なサーバー仮想化のユースケースと比較してVDI環境の場合により頻繁に見られます。ゲスト再起動またはゲストシャットダウン操作が実行されると、Acropolis サービスは仮想マシンに ACPIシャットダ... | 以下は Windows Server 2016 で電源ボタンの動作を変更しスクリーン セーバーを無効にする手順です。正確な手順はご利用中の OS バージョンのドキュメントを確認してください。VDIの場合、新しい設定を適用するにはゴールドイメージを更新し、それを使用してユーザーVMを再展開する必要があります。Case 1
設定 > 個人用設定 > ロック画面 に遷移し、スクリーン セーバー設定 を選択します。スクリーン セーバー設定 画面で、スクリーンセーバーを (なし) に設定し OK を押下します。
コントロールパネル を開き、システムとセキュリティ > 電源オプション に遷移します。(もしくは、設定 > システム > 電源と... |
KB10395 | Alert - A801109 - L2StretchLocalIfConflict | Investigating L2StretchLocalIfConflict issues on Prism Central. | This Nutanix article provides the information required for troubleshooting the alert L2StretchLocalIfConflict on Prism Central where Advanced Networking (Flow) is enabled.
Alert overview
The L2StretchLocalIfConflict alert is raised if the local VPN interface IP address is conflicted with one of these:
Gateway IP add... | Resolving the issue
Ensure that the local VPN interface IP address is not used for the gateway IP address, VM, or DHCP pool in local and remote availability zones.
If you need further assistance or if the above-mentioned steps do not resolve the issue, consider engaging Nutanix Support https://portal.nutanix.com.
C... |
KB5797 | NCC Health Check: conflicting_floating_ip_check_plugin | The NCC health check conflicting_floating_ip_check_plugin checks if there are multiple VM NICs associated with Nutanix Disaster Recovery (DR) recovery plans assigned with the same floating point IP. | Note: Nutanix Disaster Recovery (DR) is formerly known as Leap. Nutanix DRaaS is formerly known as Xi Leap.
The NCC health check conflicting_floating_ip_check_plugin checks if there are multiple VM NICs associated with recovery plans assigned with the same floating point IP. This check is executed from the Prism Centr... | In order to resolve the issue, from Prism Central, go to the Recovery Plan Page and review the recovery plans and the associated network configuration. Ensure that Floating Point IPs are associated with only one VM NIC. Correct any duplicate assignment.
In case the above-mentioned steps do not resolve the issue, consi... |
KB3086 | After Apply LSI SAS FW Update SAS Address Is Showing All Zeros | If the SAS FW update is disrupted in any way, it is possible that the 'SAS Address' from the sas3flsh -list command will show all zeros. | If the SAS FW update is disrupted in any way, it is possible that the 'SAS Address' from the sas3flsh -list command will show all zeros as shown below.
| To resolve this issue, you will need to try to obtain the SAS address via one of the two following methods (unless you had previously recorded the entire address per KB2902 https://portal.nutanix.com/kb/2902):
Boot the CVM and go to /home/log an run: sudo grep sas_addr * | less If you cannot find the address via step ... |
KB15666 | Flow Network Security (FNS) PE auto-upgrade fails during node addition/expansion on a kBackplane + kService on NS-enabled-cluster with error ValueError: list.remove(x): x not in list | On clusters where the backplane network and Service network segmentation is enabled, if a cluster expansion is performed, the flow service on the newly expanded node may fail to start and cause genesis to crash on the new node. | After a cluster expansion in clusters where Network Segmentation (Backplane Network) and service network segmentation are enabled, genesis may crash on the newly added node due to failure to upgrade the Flow version on the new CVM.The following traceback may be observed:
2023-10-11 13:20:17,120Z INFO 99331984 flow_upgr... | Note: Consult with a Senior SRE or a Support Tech Lead (STL) before following these steps.Follow these steps below to upgrade Flow Network Security (FNS) PE on the newly added CVM.Note: These steps can also be followed if the CVM has not yet been added to the cluster.
Use Genesis on the new CVM's CLI to stop the flow s... |
KB15555 | NDB - Staging Snapshot replication operation fails with "'NoneType' object is not subscriptable" error | Staging Snapshot replication operation fails with the 'NoneType' object is not subscriptable" error. | Note: Nutanix Database Service (NDB) was formerly known as Era.
Staging Snapshot replication operation fails with the following error message:
'NoneType' object is not subscriptable
If an Update Time Machine SLA operation has failed or timed out before, then this issue can be seen. | Workaround
Get the Time Machine name for which the staging snapshot replication operation fails. The time machine name can be fetched from the alerts page of the NDB UI, where the alert for the failed operation can be seen.
Go to the NDB operations page and select the Nutanix cluster for which the staging snapshot rep... |
KB17055 | Determine who deleted a VM on AHV | In some instances an administrator may need to know who deleted a VM as well as other data useful for VM recovery. | Administrators are sometimes tasked with determining the actions of their users. One such instance is an unplanned VM removal. | If you are using Prism Central, you can look up the VM deleted task and determine the user who requested it. See the Prism Central Infrastructure Guide for more details: https://portal.nutanix.com/page/documents/details?targetId=Prism-Central-Guide-vpc_2024_1:mul-explore-entities-activity-pc-c.html https://portal.nuta... |
KB10124 | Creating a migration plan in Move fails with "Not able to find File on VM." | Creating a migration plan fails with "Not able to find File on VM." Upgrade Move to the latest version. | A migration plan fails during attempt to migrate a VM with the following error message in the Move user interface:
"Not able to find File on VM <vmname>. Got error 'Got error while listing files at path [C:\Users\admin\AppData\Local\Temp\vmware]. Error is [ServerFaultCode: File <unspecified filename> was not found]'
Op... | To resolve the issue, upgrade Move to version 3.7.1 or later. |
KB14014 | Inactive account. Please contact portal_accounts@nutanix.com | Please review this article if you are unable to access the Nutanix support portal and are observing the error ''Inactive account. Please contact Portal_accounts@nutanix.com" | If you have encountered the error "Inactive account. Please contact portal_accounts@nutanix.com" and are not able to access the support portal please send an email to the specified address. The email should include the login name that was used for testing. A support team member will then be able to assist.
Example: ... | Please email portal_accounts@nutanix.com for further troubleshooting as specified in the alert and a support team member will assist. The email should include the login that was used for testing and if possible, a screenshot of the issue including the URL. |
KB15265 | Linux VM static ip resetting to dhcp upon VM reboot | Network configuration file may change after rebooting a Linux VM moved from AWS to AHV. All configuration vanished and "BOOTPROTO" changed in to "dhcp" mode. | After moving the VMs from cloud (AWS) to Nutanix(AHV), windows VMs may move without any issue and network configuration works fine. But linux VMs lose the Network configuration when Vm reboots. All configuration vanished and "BOOTPROTO" changed in to "dhcp" mode.
**ETH configuration before reboot**
[root@linux~]# ... | In this case, Cloud-init service is responsible to vanish the Network configuration during boots.
ifcfg-eth0 file also specifies following:
# Created by cloud-init on instance boot automatically, do not edit.
As a workaround, disable cloud-init to ensure that it doesn’t do anything on subsequent boots
To disable cl... |
KB6313 | Move for VMs migration is stuck on Err="ServerFaultCode: A specified parameter was not correct: changeId" | Move for VMs migration will fail to delete the snapshot during Data Seeding. | When taking creating a migration plan for VMs in Move the Data Seeding part proceeds successfully but the Data Syncing part is where you will see a failure that :
2018-10-03T09:47:18.706485+00:00 E esxprovider.go:1372] [Err="ServerFaultCode: A specified parameter was not correct: changeId", Location="/home/hudsonb/wor... | Check if the CBT is enabled on the VM and on all the controllers on the VM using the KB 4820 https://portal.nutanix.com/kb/4820 Check if there are any backup scheduled for that VM, as there might be a CBT error if there is an ongoing backup schedule. Check the host resources are sufficient, which means that if there i... |
KB4335 | Role-mapping for AD groups does not work under PRISM central | If you are unable to log in to Prism Central using any user who is a member of the configured AD groups. | Customer configured role mapping for their AD groups in their Prism Central. However, they are unable to log in to Prism Central using any user who is a member of the configured groups.The Prism login page responds with an error message that the user does not have enough permissions to log in, even though the group rol... | The above issue can be caused by any of the following situations:
When the AD group is a member of multiple domains and the customer has defined the LDAP address of their AD using port 389 and not 3269. For more info on this issue, reference KB-2066 - Unable to Log In to the Prism web console using Group LDAP authenti... |
KB8564 | NCC Health Check: robo_readonly_state_check | The NCC health check robo_readonly_state_check examines the ROBO cluster to determine if it is in a Read Only state. | The NCC health check robo_readonly_state_check examines the ROBO cluster to determine if it is in a Read Only state. Prior to running this check, upgrade NCC to the latest version.Running the NCC CheckYou can run this check as part of the complete NCC Health Checks.
nutanix@cvm$ ncc health_checks run_all
Or you can r... | If the check reports a failure, follow the below steps to troubleshoot :
Ensure the reported CVM is UP and reachable over the networkCheck there are no hardware issues reported by any other NCC check.Check the Health status of SSD drives on the cluster.
In case the above-mentioned steps do not resolve the issue, cons... |
KB3715 | Nutanix Files - Creating / Updating the FSVM VM-to-VM Affinity Rules on ESXi | An alert is raised if VM-to-VM affinity rules are not created for File Server on ESXi. To set VM-to-VM affinity rules on ESXi, you should enableDistributed Resource Scheduler (DRS) on the cluster. If the DRS rule is not set when you are creating or updating File Server, you can update the rules by following the instruc... | An alert is raised if VM-to-VM affinity rules are not created for File Server on ESXi.
An error message like the following is displayed if the VM-to-VM affinity rules are not created while creating File Server on ESXi.
task.get 3a3e6a34-abcd-486a-8179-d681183bf1a5
An alert similar to the following is raised if the ... | To check if the cluster services are up and running, run the below commands:
run cluster status and check if all the CVMs, FSVMs, and services are UP:
cluster status | grep -v UP
Run file_server_status_check on any of the CVM to determine the issues that would be flagged by NCC.
nutanix@cvm$ ncc health_checks fileserve... |
KB16734 | Creating SQL Quorum on Nutanix File share | Failure observed when adding Nutanix File Share as Quorum disk in SQL Server Cluster due to incorrect share name or permissions. | Adding a Nutanix File Share as Quorum disk in SQL Server Cluster will fail due to permission issues on the share. | Troubleshooting steps:1. Confirm that the selected share has DFS disabled. In the following example, the share name is Quorum. Refer to KB 11210 https://portal.nutanix.com/kb/11210 for more information about DFS and Witness Shares.
<afs> share.dfs Quorum status
2. In SQL Server, the Configure Cluster Quorum Wizard ind... |
KB15392 | PC 1-click DR - pc_backup_sync_check fails due to incorrect Prism Central VM uuid | PC 1-click DR backups may fail when the Prism Central VM was recovered on the source cluster previously. | Customers may receive an NCC alert reporting PC DR backups are failing for the Prism Central VM like below,
Detailed information for pc_backup_sync_check:
Accessing Prism Central Settings -> Prism Central Management Page will not show the status of PC DR no details are shown about PC DR status.Checking the API call wi... | Pre-requisites
All the symptoms in the description section matches the issue.Customer recovered the Prism Central VM on the source cluster after which the issue started happening. NOTE: Customer should have restored the PC VM on the source PE cluster not the Destination PE cluster
Resolution:To resolve the issue follow... |
KB7357 | How to create long living tokens to integrate CI/CD pipeline in Nutanix Kubernetes Engine | How to create long living tokens to integrate CI/CD pipeline. | Nutanix Kubernetes Engine is formerly known as Karbon or Karbon Platform Services. Nutanix Kubernetes Engine default token is valid for only 24 hours, which makes integration difficult with external components like CI/CD pipeline and Kubernetes cluster deployed by Nutanix Kubernetes Engine. | Nutanix recommend using the Nutanix Kubernetes Engine API to regenerate the kubeconfig before the 24 hours expiry and integrate that process in your CI/CD workflow. See Nutanix Dev https://www.nutanix.dev/reference/karbon/Intro/ for reference.Alternatively, you can use Nutanix Kubernetes Engine Service Account. This i... |
KB14520 | VM management tasks fail with error 'Command failed: /sbin/ip tuntap add dev tap0 mode tap multi_queue: Object "tuntap" is unknown, try "ip help"' | VM management tasks fail when AHV is not compatible with AOS. | AOS 6.5.2 and above are not compatible with AHV-20170830.x.Customers who are using older AHV while upgrading AOS using Prism 1-click Software upgrade process could run into issues with VM manageability due to the incompatibility.VM management tasks such as VM power on, Host maintenance mode fail with the following erro... | This issue is resolved in:
AOS 6.5.x family (LTS): 6.5.3
AOS 6.5.3 introduces a capability to provide backward compatibility on a certain AHV VM network management workflow to avoid the reported VM management error in this article. However, AHV must still be upgraded to meet AOS compatibility per the Compatibility an... |
KB2997 | NCC Health Check: ldap_config_check | The NCC health check ldap_config_check examines the Cluster LDAP Configuration. | The NCC health check ldap_config_check examines the Cluster LDAP Configuration available on the Controller VM (CVM) to ensure that the cluster connects properly to the LDAP server.
Running the NCC checkRun this check as part of the complete NCC health checks:
nutanix@cvm$ ncc health_checks run_all
Or run this check ... | If the test result is a FAIL status or WARN status, the cluster function is not impacted, and some users may not be able to log in to the Prism Web Console.
If the check reports a FAIL status, do the following:
Verify that the DNS can resolve the LDAP address:
nutanix@cvm$ ncli authconfig ls
Verify that the configu... |
KB7587 | No foundation service item “foundation: []” in the output of “genesis status” after rescue CVM. | No foundation service item “foundation: []” in the output of “genesis status” after rescue CVM. | No foundation service item “foundation: []” in the output of “genesis status” after rescue CVM. Other services are normal.The output of "genesis status | grep foundation" is empty.Sample output of "genesis status":
2019-06-06 15:33:31.728211: Services running on this node: | Upgrade Foundation to the latest version.Workaround:
Confirm Foundation status.
nutanix@cvm$ ~/foundation/bin/foundation_service status
If the above commands are successful, it indicates that this component is normal. If so, kill the foundation process.
Confirm the Foundation version.
nutanix@cvm$ cat ~/foundation... |
KB15725 | vGPU VM fails to start with "Failed to get VM UUID from QEMU command-line" errror | VMs with vGPU may fail to start on the latest hardware platforms like G9 or HX665 V3. | VMs with vGPU may fail to start on clusters running AOS 6.5.4, 6.5.4.5, 6.7.0.5, 6.7.0.6 with bundled AHV releases and using the latest hardware platforms like G9 or HX665 V3.When the VM is being started, the NVIDIA vGPU manager parses the QEMU command line and looks for the "-uuid" field. In some cases, this field is ... | This issue is resolved in:
AOS 6.5.X family (LTS): AHV 20220304.478, which is bundled with AOS 6.5.5AOS 6.7.X family (STS): AHV 20230302.1011, which is bundled with AOS 6.7.1
Please upgrade both AOS and AHV to versions specified above or newer. |
KB6957 | Backup job fails with an SQL VSS Writer error after installing ACT! Software | Customer has issues with app consistent snapshot taken by Veeam software. Normal snapshot works well. Also, SQL installed on that VM which has vss writers in failed state. (vssadmin list writers) | If you have an ACT! Software installed, Veeam Agent for Microsoft Windows job or Veeam Backup & Replication job with Application-aware processing fails with the following:
Failed to create snapshot. Error code -2147212300. 'Backup job failed.
At the same time, the following errors appear in Windows Application log:
... | Perform the following steps in order to fix the issue:
Open SQL Server Configuration Manager.Navigate to SQL Server Services.Select an appropriate instance (e.g., SQL Server(ACT7)).Change Log On from Built-in account: Local System to Built-in account: Local Service |
KB9892 | NCC check marvell_boss_card_status_check fails on ESXi 7.0 on Dell platforms | This article describes an issue where NCC check marvell_boss_card_status_check fails on ESXi 7.0 on Dell platforms. | NCC check marvell_boss_card_status_check may report below ERR status on ESXi 7.0 based Nutanix clusters on Dell platforms (both PowerEdge and XC).
Sample NCC output:
Running : health_checks hardware_checks disk_checks marvell_boss_card_status_check
Running the following curl command on the CVM (Controller VM) result... | To resolve the NCC check failure, perform the following steps:
For Dell XC:
Perform LCM inventory https://portal.nutanix.com/page/documents/details?targetId=Life-Cycle-Manager-Guide:top-lcm-inventory-t.html and verify that the LCM version is 2.3.4.Rerun NCC Health Checks and verify it completes successfully.
For De... |
KB14698 | Space Accounting | Prism shows different space usage for a VM than the Guest OS shows | This KB explains why the space usage reported in a VM might be different from what is shown in Prism for this VM. | For other Space Accounting issues not covered in this article, please take a look at the Space Accounting | General Troubleshooting article https://portal.nutanix.com/kb/14475.Based on the configuration of your guest OS and hypervisor and the workload within the guest OS, you may encounter a scenario where the disk sp... | For the guest VMs to properly notify AOS of deleted blocks, we need to leverage SCSI UNMAP functionality. By issuing the SCSI UNMAP command, a host application or OS specifies that a given range of storage is no longer in use and can be reclaimed. When the guests send UNMAP commands to the Nutanix storage layer, Prism ... |
{ | null | null | null | null |
KB14749 | Enabling MSP fails after upgrading PC above 2022.9 using dark site LCM | This article covers scenario where enabling MSP fails after upgrading PC to 2022.9 or higher using dark site LCM due to symlinks not preserved during extraction. | Microservices Platform (CMSP) 2.4.3 enablement may fail in dark site scenario if MSP dark site bundle is extracted on the customer web server without preserving symlinks.Symlinks may not be preserved depending on the software and method used to extract MSP dark site bundle. This is usually observed if the MSP bundle is... | PC upgrade to 2023.1.0.2 and MSP to 2.4.3.2 resolves the issue. Suggest upgrading to PC 2023.1.0.2 and deploy MSP 2.4.3.2 bundle in the dark site.
Workaround:As a workaround, copy the contents of
builds/msp-builds/msp-services/464585393164.dkr.ecr.us-west-2.amazonaws.com/nutanix-msp/
to
builds/msp-builds/msp-servic... |
KB11912 | PD based Application consistent snapshot is failing with an error "Quiescing guest VM(s) failed or timeout out" | PD based Application consistent snapshot is failing with an error "Quiescing guest VM(s) failed or timeout out" | While taking Application-Consistent Snapshot for a particular VM, it fails with the below error message :
VSS snapshot failed for the VM's XXX protected by the XXX in the snapshot XXXX because Quiescing guest VM(s) failed or timeout out
In NGT Master, we can notice 'Unable to find VSS transaction id' error
ERROR C:\Pr... | This problem occurs when Cerebro is able to take the snapshot but VSS seems to be taking more than 30 second to issue finish_vm_snapshot call to Cerebro. Cerebro waits for only 30 seconds (FLAGS_cerebro_vss_finish_timeout_secs) after taking the snapshot, after that it drops the transaction id and takes a crash-consist... |
KB12581 | Nutanix Files - Dark Site Files Deployment fails with "NFS: CREATE of / failed with NFS3ERR_INVAL(- 22) | Resolving an issue where dark site deployment fails for Nutanix Files. | This problem occurs exclusively when UI upload is used. During deployment of Nutanix Files in Dark Site Environment, the below error is displayed on the AFS leader in minerva_cvm logs:
MinervaException: Image conversion failed qemu-img: nfs://127.0.0.1/Nutanix_<>_ctr/: error while converting raw: Failed to create file:... | Workaround: To resolve the issue, use the command line approach ncli to upload an image and proceed with Files Deployment in Dark Site.
Remove the old image which failed using UI. Substitute the 'name' with the exact version to be removed:
nutanix@NTNX-CVM:~$ ncli software remove name=4.0.0.1 software-type=afs
Check ... |
KB10911 | Prism Central - After upgrade to PC 2021.1.0.1 or fresh deployment of 2021.1.0.1, the version shown in UI is pc.2020.11 | After upgrading a PC instance to 2021.1.0.1, the UI still shows pc.2020.11 in the Version field | Prism Central UI version incorrectly shows version pc.2020.11 even though we're running pc.2021.1.0.1Scenarios:1. After fresh 1-click deployment of Prism Central pc.2021.1.0.12. Attempt to upgrade to Prism Central pc.2021.1.01 with LCM or 1-Click shows no version available | 1. Confirm in command line current version is should show correct version pc.2021.1.0.1
nutanix@PCVM:~$ ncli cluster info
The "Cluster Full Version" string matches the output in zeus_config_printer:
nutanix@PCVM:~$ zeus_config_printer | grep el7.3-release-euphrates-5.19-stable-
2. To workaround the problem switch E... |
KB9539 | How to clear BIOS password | This KB has information where BIOS of a node has a password set which is lost or forgotten, and also a way to reset the password. | If a password is set for BIOS on a server node and is lost or forgotten there is no way to clear the password from the BIOS screen. This article provides one of the few solutions that may be utilized to clear the BIOS password. | This solution requires powering off and dismounting the server node from the rack. Plan accordingly to execute these tasks.
Power off and disconnect all cables from the node. Make sure to mark the cables to put them back in the same ports.
Before powering off the node, perform the node shutdown pre-checks https://por... |
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