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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KB7753 | Nutanix Objects - "dial http://127.0.0.1:2082/msp/cluster/list : connection Refused" error when deploying object store | Nutanix Objects v1.x deployment failure - "dial http://127.0.0.1:2082/msp/cluster/list : connection Refused" | When creating an object store fails, and the following error message is displayed:
type[CREATE]:Get http://127.0.0.1:2082/msp/cluster/list: dial tcp 127.0.0.1:2082: connect: connection refused
The /home/nutanix/data/logs/aoss_service_manager.out log file on the Prism Central VM contains errors similar to the following ... | Nutanix Objects depends on the MSP cluster and deployment will fail if MSP is not healthy. Wait a few minutes after the deployment has failed and resume the deployment from the Prism Central UI. If the deployment still fails, the cause of the MSP cluster being unresponsive needs to be investigated and resolved. Conta... |
KB5338 | How to inject storage VirtIO driver if it was not installed before migration to AHV | Failure to install VirtIO drivers prior to converting physical-to-virtual (P2V), or migrating from a different Hypervisor platform (ESX / Hyper-V) to AHV may result in a Blue Screen of Death (BSOD) for inaccessible storage (boot device). | Failure to install VirtIO drivers prior to converting physical-to-virtual (P2V), or migrating from a different Hypervisor platform (ESX / Hyper-V) to AHV may result in a Blue Screen of Death (BSOD) for inaccessible storage (boot device), showing stop error 0x0000007B.
Sample error text:
0x0000007B
This happens becau... | Typically, in preparation for performing your P2V or migration, you would want to install the VirtIO MSI package before shutting down the target and starting the migration. This will pre-load all of the required drivers and prevent this BSOD from occurring. However, if this was not done, you can do a post P2V / Migrati... |
KB8641 | Dell PowerEdge 730 foundation failed | Foundation might fail on Dell PowerEdge 730 due to unrecognized backplane model on the Node | Foundation on Dell PowerEdge-730 fails with the below error:
20190701 22:38:41 ERROR Failed to generate hardware_config.json. Error:
Trying to foundation the node with versions 3.9.x or 4.x fails as well with the same error. | The issue is with the backplane model on the Node. Nutanix supports only models 0JJTTK, 0DTCVP, 0FWXJR and 0CDVF9 with DELL PowerEdge-730, but not 0Y97XNA00.You can check the backplane model using the below commands:
root@AHV# ipmitool fru print
For ESX Host
root@ESX# /ipmitool fru print
For Hyper-V Host
nutanix@cvm$... |
KB6510 | Create Network (IPAM) with Nutanix Api v2 | null | To create a network using Nutanix API v2 we need to send POST call to URL https://cluster_ip:9440/api/nutanix/v2.0/networks/. Call Body parameter template shown below:
{
In this example we will create network with below parameters:name: nuran_net_160vlan: 160network address: 10.XX.XXX.0prefix lenght(mask): 24(255.255.... | null |
KB7597 | Imaging with Phoenix fails for Dell ESXi 6.5 U1, U2 and U3 images | Dell-specific ESXi 6.5 images contain a network driver with a defect that causes Phoenix installation to fail. This article describes the issue and potential workarounds. | When trying to run Phoenix on a node after imaging using a Dell-specific version of ESXi 6.5 (U1, U2 and U3), the imaging may fail during the firstboot script execution with the following message in the first_boot.log:
2019-06-07 20:30:28,604 FATAL Fatal exception encountered:
This error is due to a problematic NIC ... | This issue is driver-specific and not necessarily specific to a version of Phoenix/Foundation or AOS.
In this case, the reported 1.1.0, 1.5.6 and 1.7.11 versions of the i40en driver encountered the issue, and any image using these driver versions may experience this issue. Potentially, there could be other versions of... |
KB8541 | Re-enabling Metro PD may fail with the error 'Attempt to lookup attributes of path /XXX/XXX...... failed with NFS error 2' | If customer registers by mistake a VM from .snapshot folder, re-enabling Metro will fail and in some scenarios it can cause Storage outage. | After unplanned Metro failover, a user may need to remove one or more VMs from the inventory, then register them back with vCenter.In some scenarios, when browsing the datastore if you search for VM name it will display files from live and from .snapshot folder so a user may register more than one VM with .vmx file tha... | The above issue can cause an outage if a customer registers more than one VM from .snapshot folder and if impacted VMs are running on different nodes. Also never try to delete missing files from the reference snapshot on the remote site, as this will prevent Cerebro from aborting replication and increase chances of ano... |
KB6315 | Prism Central shows message: "There is a licensing violation for Flow. To be compliant, please license now." for Flow Network Security | This KB article describes actions that can be taken to remove the banner in Prism Central about Flow Network Security (FNS) microsegmentation feature license violation. | The following error can be displayed in Prism Central after Flow Network Security (FNS) microsegmentation feature trial has expired:
There is a licensing violation for Flow. To be compliant, please license now. | If you want to continue using Flow Network Security (FNS), install a valid Flow license. Refer to the Licensing documentation on the Support Portal https://portal.nutanix.com/page/documents/list?type=software&filterKey=software&filterVal=LicensingIf you are not planning to continue using FNS, use Prism Central Setting... |
KB10117 | Image upload will fail if the container has # in the name | Image upload will fail if the container has # in the name | If an image upload is attempted to a container that has the symbol # in the name, the upload will fail and the error will be generated:
"Could not access the URL nfs://127.0.0.1/%23ISO_Images/.acropolis/image/106ac31b-6236-4534-a2ae-808c08bb912f: Failed to parse the file size"
| That happens because the URLs cannot have the # in them and it gets automatically replaced with %23. That creates the inconsistency between the container name and the URL. To resolve the issue, rename the container and remove the # from the container name and retry the image upload. |
KB8159 | Enable debug level logging for VirtIO network adapter driver (netkvm) | This KB describes how to increase debug level for in-guest (Windows) NIC | In situations were additional detailed log information is needed for in-guest network operations, the Nutanix VirtIO Ethernet Adapter's logging level needs to be increased.Some examples where this may be useful include (not exhaustive list):
Checking Acropolis operations against in-guest VM network operations;Debugging... | NetKVM support logging levels
NetKVM driver supports the logging levels from 0 to 6:
- Basic configuration and unload trace, critical errors.- Warnings, corner cases.- Network packet flow.- More verbose trace of packets.- VirtIO library, DPC.- ISR trace.- Registers read/write.
Enabling and collecting NetKVM debug lo... |
KB14223 | Data Lens Ransomware Detection is flagging files that are not ransomware | Temp files created by MS Office (like Excel .xlb) may be created in a way that appears to mimic a ransomware attack. | Application Files like that of MS Office Suite and Chrome files show up as ransomware-infected files.
The way these application files get written to and renamed mimics that of the ransomware audit event pattern, and the final result of the file is a binary encrypted file. That is the reason why these files are getting... | To view the detected attacks and list out the files, you can use the following section of the Data Lens User Guide https://portal.nutanix.com/page/documents/details?targetId=Data-Lens:ana-analytics-view-threat-details-t.html.
You can export the list in a .csv format and review the File Name column to see the extensio... |
KB12491 | Security mitigation for Apache log4j2 vulnerability on Witness VM 6.x (CVE-2021-44228) | This article provides mitigation steps for Apache log4j2 vulnerability on Witness VM 6.x | A critical vulnerability in Apache Log4j2 (CVE-2021-44228) has been publicly disclosed that may allow for remote code execution in Witness VM 6.x release.Witness VM 6.x has an inactive version of log4j2 present which is not instantiated nor listening for connections.For more details refer to the Security Advisory #23 ... | In order to mitigate the Apache log4j2 vulnerability, SSH into the Witness VM as user nutanix and execute the following command to remove the affected binary.
nutanix@CVM:~$ USE_SAFE_RM=no rm -rf ~/adonis
|
""cluster status\t\t\tcluster start\t\t\tcluster stop"": ""esxcfg-route -l"" | null | null | null | null |
KB10490 | EXT4-fs (loop0): warning: mounting fs with errors, running e2fsck is recommended | This article explains how to resolve FS errors on /tmp or loop0 in CVM | Sometimes, the /tmp or loop0 device on CVM can get soft filesystem corruption. This article explains how to resolve such cases.The "dmesg -T" command on CVMs will show the following output:
Fri Jul 17 12:12:48 2020: EXT4-fs (loop0): warning: mounting fs with errors, running e2fsck is recommended
NCC will report the fo... | The File-system corruption on /tmp can be fixed using following steps.1. Put the CVM (on which the /tmp File-system error is seen) to Maintenance Mode. Refer KB- http://portal.nutanix.com/kb/4639 4639 http://portal.nutanix.com/kb/46392. Un-mount the /tmp Filesystems.
nutanix@CVM:~$ sudo umount /tmp -l; sudo umount /va... |
""Form Factor"": ""VMD node (Hot-plug capable)\n\t\t\tAHV: No CVM reboot | no Hypervisor reboot | no script needs to be runESXi: No CVM reboot | no script needs to be run\n\t\t\t\t\t\tNon-VMD node\n\t\t\tAHV: CVM will auto reboot upon the NVMe drive “add and partition” workflow | no Hypervisor reboot |
KB6228 | Citrix Director plugin "Unable to connect to the host" | Citrix Director plugin for AHV fails to make the connection with Nutanix cluster and fails with error "Unable to connect to the host" | Issue:Citrix Director plugin for AHV fails to make connection with the Nutanix cluster and fails with error "Unable to connect to the host".Cause:ICMP traffic between Citrix Director and Nutanix Cluster is blocked. | Verify if the server that Citrix Director is installed on has connectivity to the Virtual IP of the AHV cluster via port 9440. Please disable Proxy if there have a proxy config with IE on DDC server.Run command from Power Shell:
Test-NetConnection <Cluster VIP> -Port 9440
Example of successful connection:
PS C:\Users\... |
KB6995 | Nutanix DRaaS - A130179 - Replication is stuck because of long running replication tasks | It has been observed in the field where the replication is tuck due to long running replication tasks. | Nutanix Disaster Recovery as a Service (DRaaS) is formerly known as Xi Leap.We have seen issues where replication gets stuck because of the long running replication tasks. This lead to the inability to delete old local recovery points due to running cerebro tasks. This issue can happen when one of the VM vdisks get ina... | Do not attempt to abort the tasks without consulting with Nutanix Support as this may lead to data inconsistencies.
If you need assistance from Nutanix Support, add a comment to the case on the support portal asking Nutanix Support to contact you. You can also contact the Support Team by calling one of our Global Su... |
KB4399 | ESXi: How to configure LSI HBA passthrough | Circumstances can lead to the PCI address of the HBA to change leading to CVM booting issues.
Here is how to detect and correct these issues. | After BIOS or ESXi updates, the LSI HBA might get a different PCI address after the host reboots.
An error similar to the following is generated when the CVM starts:
Insufficient resources. One or more devices (pciPassthru0) required by VM NTNX-CVM are not available on host host01.local.
For the newer ESXi version For... | For the newer ESXi version
Check the current PCI address for the LSI adapter:[root@esxi:~] lspci | grep -i lsi
0000:01:00.0 Serial Attached SCSI controller: Avago (LSI Logic) Fusion-MPT 12GSAS SAS3008 PCI-Express [vmhba2]
In the vmkernel.log, you see that the CVM tries to access 0000:03:00.0, which is no longer valid.G... |
KB16269 | NKE - Certificate rotation fails to rotate ETCD DVP certificate | NKE certificate rotation fails when rotating ETCD dvp certificate | Certificate rotation tasks initiated in NKE will fail reporting etcd service restart failed.
2024-02-22T20:53:40.13Z etcd_configure.go:469: [ERROR] Error while rotating the etcd cert for etcd node: karbon-xxx-yyyy-etcd-0, err: Operation timed out: Failed to configure with SSH: Failed to run command: on host(xx.xx.xx.x... | To resolve the issue follow the steps below, Step1: Download the script https://download.nutanix.com/kbattachments/16269/karbon_extract_cert.py to extract the new certificate from failed task from here into ~/tmp folder on one of the Prism Central VM. md5sum is 5d494bfd5426af6ea73f42260ff5ab44Step2: List the failed ce... |
KB7181 | Aborting Move VM Tasks | This KB emphasizes on how to Abort / Cancel migration plans manually if the Abort option on UI fails. | This KB has been merged with the contents of KB 5560.For aborting / cancelling Move VM tasks for Move versions prior to 3.x as well as 3.x and above.
PLEASE NOTE: This issue is fixed in the latest Move 3.5.1, If you encounter this issue in Move 3.5.1 and above, please reach out to Move Engineering on Slack Channel... | For Move Versions 3.x or later follow the below steps :
1. Login to Move VM through SSH using admin / nutanix/4u (default password)
2. Switch to the root user.
[admin@nutanix-move ~]$ rs
3. Login to postgres shell, This can be done by below command
root@nutanix-move ~]# postgres-shell
4. Then invoke the Postgr... |
KB13918 | Remote connection update task may get stuck or fail on PE and PC | Stuck remote_connection_intentful task while deleting/updating/resetting the remote connection. PC shows as "Disconnected" in PE UI | Stuck remote_connection_intentful task while deleting/updating/resetting the remote connection:Scenario 1 : Stuck task on PE :
nutanix@CVM:~$ ecli task.list include_completed=0
Stuck task on PC :
nutanix@PCVM:~$ ecli task.list include_completed=0
Remote connection task on PE fails with error message - ENTITY_NOT_FOUN... | Workaround: Scenario 1 :
Make sure there is no problem with connectivity between PE and PC on port 9440 (see KB 6970 https://portal.nutanix.com/kb/6970)If the parent task (update_remote_connection_intentful) is stuck on PE then restart aplos and aplos_engine on PE to clear the task:
nutanix@CVM:~$ allssh genesis st... |
{ | null | null | null | null |
{ | null | null | null | null |
""ISB-100-2019-05-30"": ""Description"" | null | null | null | null |
KB6925 | CVM fails to power on with error message "The virtual machine cannot be powered on because virtual nested paging is not compatible with PCI passthru in VMware ESX 6.0.0." | In rare cases, particularly after ESXi updates, a CVM (Controller VM) may fail to boot with the error message "The virtual machine cannot be powered on because virtual nested paging is not compatible with PCI passthru in VMware ESX 6.0.0." | In rare cases, particularly after ESXi updates, a Nutanix CVM (Controller VM) may fail to boot with the error message "The virtual machine cannot be powered on because virtual nested paging is not compatible with PCI passthru in VMware ESX 6.0.0."
In vmware.log, you see the following messages or similar:
2019-02-05T1... | On the ESXi host that owns the affected CVM, use KB-4399 http://portal.nutanix.com/kb/4399 to verify that all basic LSI passthrough settings are correct.
If the issue still persists after going through KB-4399 http://portal.nutanix.com/kb/4399, continue.
The setting that enables the nesting of hypervisors should be... |
KB9924 | Nutanix Self-Service - Steps to increase IDF memory | This KB article has the steps to increase IDF memory for the VM migration to succeed. | Nutanix Self-Service (NSS) is formerly known as Calm.When VM gets migrated to Calm as a Single-VM application, a number of IDF entities are created pertaining to the newly created Calm Application. As these entities are created in the IDF, IDF memory requirements increase.If a large number of VMs are Getting migrated o... | "WARNING: Support, SEs and Partners should never make Zeus, Zookeeper or Gflag alterations without review and verification by any ONCALL screener or Dev-Ex Team member. Consult with an ONCALL screener or Dev-Ex Team member before doing any of these changes. See the Zeus Config & GFLAG Editing Guidelines https://docs.g... |
KB11466 | Objects - Objects Deployment post CMSP enablement with IAM service is not healthy | If the deployment of the objects cluster is performed after CMSP is enabled, it might result in the deployment failure. | Problem Signatures
You are running PC 2021.5, but Objects Manager is on a version < 3.2You have enabled Objects and then enabled CMSP in Prism Central prior to deploying your objects clusterThe object store deployment will fail with the error:IAM service is not healthy
Service Manager logs (in Prism Central: /home/nut... | This issue is fixed in Objects Manager 3.2.
To resolve the issue, upgrade Objects Manager and start a new deployment:
Delete the existing failed deployment in UIUpgrade Objects Manager via LCM to 3.2 or higherRe-attempt deployment.
As a workaround, restart Objects Manager service and resume Objects Deployment:
SSH into... |
KB15502 | Nearsync could experience issues after upgrading AOS to 6.5x or higher if one of limits in the PD configuration maximums is not complied with. | Nearsync might be malfunctioning after upgrading AOS to 6.5 or higher if one the limits in PD configuration maximums is not respected" | After upgrading AOS version to 6.5x, nearsync may be malfunctioning due to the PD configuration maximums enforced in the newer AOS versions.
Symptoms : To pinpoint the issue please proceed with the following steps:
The following/similar alerts will be detected from the cluster/PD:
Above alert "failing PD sn... | To fix the issue, please follow these steps:
Make sure that you are following Nutanix Configuration Maximums https://portal.nutanix.com/page/documents/configuration-maximum/list?software=Disaster%20Recovery%20-%20Protection%20Domain&version=6.5Split nearsync PDs with a max of 10 VMs per PD. Note that in the newer AOS ... |
KB12537 | Troubleshooting Nutanix DRaaS connectivity with Multiple VPN gateways | Troubleshoot On-Prem connectivity to Nutanix DRaaS when using multiple VPN gateways | Nutanix Disaster Recovery as a Service (DRaaS) is formerly known as Xi Leap.You will note that the replication from one or more clusters is not working and customer has multiple VPN gateways for redundancy purpose.At the Xi portal everything looks fine:
VPN gateway Status is On at all VPN gateways;The IPSec status is C... | Please check the routes at the affected cluster:To check the routes run:
route -n
Or
ip route
PS: You may also compare the output with a working cluster if you have one.The output should return one route to the Xi public IP using the VPN gateway as router.Ex:
Kernel IP routing table
If you have the route to Xi missing... |
KB5179 | SCOM Exception: The remote server returned an error: (401) Unauthorized. | null | When you configure the Nutanix cluster discover SCOM template, you might receive the Cluster connection successful validation from the Nutanix Cluster Configuration and Verified from the IPMI Account Configuration.
However, when you apply the configuration, nothing is discovered. From the SCOM server Operations Manage... | This issue occurs because you do not have the local administrator rights. When you are running the cluster discovery, you need to run the SCOM dashboard as the administrator.Right-click the SCOM dashboard and run it as the administrator. This should resolve the Unauthorized message. |
KB11461 | LCM inventory is taking longer time to complete on large clusters | LCM inventory is taking longer time to complete on large clusters | LCM run inventory is taking longer time to complete on large clusters which are running with huge workloads.
Example:Inventory on ESXi 48 nodes cluster and it took close to 9 hours for a successful inventory.
Prechecks ran for 20 minutes and inventory op for 7 hours 52 min. Inventory op had 500+ sub tasks. | Please investigate the issue to understand what task is stuck and why ?There can be multiple areas where LCM Inventory task can take time - it is important to know what is the cause for individual case.Steps to triage:
Understand the stuck task from ecli task.list
Example :
nutanix@CVM:10.x.x.x:~$ ecli task.get 535... |
""cluster status\t\t\tcluster start\t\t\tcluster stop"": ""ethtool -i VMNic Name"" | null | null | null | null |
KB13243 | Nutanix Self-Service: Creating VM fails with error "Script execution failed with status 1!" | This article discusses an issue with launching VM/App on Self-Service (formerly Calm). | Nutanix Self-Service is formerly known as Calm.
Deploying VM/App from a Market Place throws the following error under section "Allowed to deploy new desktop"
Script execution failed with status 1!
The styx logs (/home/docker/nucalm/log/styx.log) will show the following entry:
[2022-06-13 00:54:59.920495Z] INFO ... | From the UI error and the log snippet, it is clear that user authentication error is causing the issue. The user in concern can be found in the logs (here user@xyz.com).The issue can be caused if the credentials https://portal.nutanix.com/page/documents/details?targetId=Self-Service-Admin-Operations-Guide:nuc-app-mgmt... |
KB13800 | VSS snapshot fails with error "cannot snapshot file in recycle bin" in Hyper-V clusters | Hyper-V VSS snapshot during any Backup process on Nutanix fails as it tries to snapshot files in recycle bin as well. | It has been discovered in the field that backup operations using VSS fail on Hyper-V clusters upgrading to AOS 5.18.x and above.
Identification:
Backup fails with error messages in Stargate logs below:VSS snapshot attempts to take a snapshot of the files in recycle bin causing snapshots to fail.
E20220901 22:35:18.... | Root cause:
This is caused due to recycle bin feature being enabled on AOS 5.18.x and higher versions. As the VSS snapshot tries to backup the contents of the recycle bin it fails.
Workaround:
The workaround for this is to disable recycle bin and clear any existing contents.Follow Recycle Bin in AOS /articles/Knowled... |
KB7751 | Hyper-V: Upgrade: Manual Upgrade Process | It may be required to perform a manual upgrade for a Nutanix Hyper-V cluster due to issues or scenarios where the 1-click automation may not be supported or may not function as expected. | Purpose:
It may be required to perform a manual upgrade (or perform specific steps) for a Nutanix Hyper-V cluster due to issues or scenarios where the 1-click automation may not be supported or may not function as expected.
Known Scenarios:
The customer is using SCVMM (System Center Virtual Machine Manager) with Log... | It is recommended that you read through the entire process thoroughly before attempting this process.
If you are unsure about any steps, please reach out to a senior Nutanix resource.
Upgrade Cluster Preparations Steps:
Stage ISO.
Windows 2016Windows 2019Phoenix
For G4/G5 Nodes, test the SATADOM write speed. If lo... |
KB5118 | AOS Upgrade to 5.5.x Is Unresponsive - Genesis Is Unresponsive in a Loop | Any incorrect or malformed NFS whitelist IP address or netmask created in an AOS version earlier than 5.5 and still present in Zeus configuration at the time the upgrade to AOS 5.5.x is triggered, will not pass the new network validation and will lead to a genesis crash loop. | Symptoms
Upgrading AOS to 5.5 by using the Prism web console is not making any progress.Genesis is unresponsive in a loop according to the genesis.out file. The following error message is displayed before the Genesis becomes unresponsive.
AddrFormatError: invalid IPNetwork
The full stack trace in ~/data/logs/genesi... | Perform the following procedure to solve the issue.
If your CVMs (Controller VMs) are in the up state and you can still access nCLI , remove the incorrect NFS whitelist entry.
nutanix@cvm$ ncli cluster remove-from-nfs-whitelist ip-subnet-mask=<IP/Netmask>
Restart Genesis on the cluster.
nutanix@cvm$ $ allssh gene... |
KB3764 | ESXi reboot fails with error "No hypervisor found" | ESXi reboot after BIOS upgrade files with error "No hypervisor found." This article describes how to troubleshoot and resolve this issue. |
Attempt to reboot the ESXi host after BIOS Upgrade or after successfully installing the ESXi fails with the below error:
BANK5: not a VMware boot bank
This issue occurs due to a prior partition table present in the local datastore (SATADOM).
Reinstalling ESXi fails with the below error:
Error: Both the prim... | Resolution is to boot the node from a Live Linux CD/DVD ISO of your choice, delete all the partitions of the local datastore, relabel the local datastore, create a partition table with one partition, and then re-install ESXi.
Below are the detailed steps that need to be followed one by one:
Download a Live Linux CD/DV... |
KB16661 | Failure to add node to preprovisioned cluster due to "No available hosts" | Failure to add node to preprovisioned cluster due to "No available hosts" | null | If you are trying to add nodes to a DKP preprovisioned cluster, you may encounter a scenario where the node is stuck being provisioned.
Checking the logs for the cappp-controller-manager logs, you might see messages like the following:
20XX-XX-XXTXX:XX:XX.XXXZ ERROR controller.preprovisionedmachine Reconciler err... |
KB3777 | ESXi CVM memory showing 100 percent | ESXi CVM memory running 100 percent | In ESXi the CVM memory utilization status might show %100 but when you check within the CVM there are free memory available.Symptoms:On vSphere Client you'll see the status of the CVM as shown below:On ESXi using ESXTOP with the "m" option you will see similar to this output depending on the memory size allocated to th... | The problem is due to Latency-Sensitivity feature that was introduced in vSphere 5.5.To fix the issue, Latency Sensitivity needs to be disabled or set to Normal on the CVM. This setting is only available in vSphere Web Client.For more information about this feature, you can refer to this technical whitepaper Deploying... |
KB15363 | NCC Health Check: smtp_server_security_check | The NCC health check smtp_server_security_check checks if the SMTP server's outbound email setting uses SSL or TLS security mode. | The NCC check check_smtp_server_security confirms whether the SMTP Server in PC is configured to use recommended security mode (STARTTLS or SSL) for secure snapshots.The check was introduced in NCC 5.0.0 and PC.2024.1. This is applicable only on PC.2024.1 or above. This check doesn't run on CVM.The check_smtp_server_s... | It is strongly advised to configure the SMTP server to utilize STARTTLS or SSL Security Mode.Approval Policy (Secure Snapshots) relies on email communication for approval requests. Failure to secure the SMTP server with these protocols may lead to the compromise of approval requests and the unauthorized manipulation of... |
KB6692 | Configuration error in event logs of BMC (G6 platforms) | Support should not replace the node on the basis configuration errors in event logs | You may see configuration errors in the IPMI SEL logs for G6 platforms. We have observed two symptoms when this SEL is observed.Issue1: No impact to the system operation but Configuration Error in SEL events.
IPMI SEL logs will have this entry:-
0x04 0xce 0x00 0x6f 0x04 0xff 0xff # Unknown #0x00 Unknown
Web UI SEL l... | The error signature from the decode of registers, it is CPU cache correctable error.Please collect the below logs for both issues and open a case with Nutanix Support to confirm this instance.
NCC log collector bundle
Gather NCC log bundle using the following plugin and component list for a 4-hour window around wh... |
KB13846 | Alerts/Tasks not loading anymore after click to 'Overview' subnavigation link in Alerts and Tasks pages | Alerts/Tasks not loading anymore after click to 'Overview' sub-navigation link in Alerts and Tasks pages. This prevents the PE administrator from viewing alerts. | In Prism Element UI of AOS 6.5.1, 6.5.1.5, or 6.1, Alerts and/or Tasks page may not load and may be stuck with "Loading..." message after clicking on 'Overview' sub-navigation link in the 'Alerts' and 'Tasks' pages.Identification:
In Prism Element UI, after navigation to 'Alerts' or 'Tasks' page, the page not loading, ... | The issue has been fixed in AOS 6.5.2 and above. If the upgrade is not immediately possible, please, follow the steps described in the workaround section.Workaround:To workaround the problem, clear cookies for the Prism website in the browser; Once cookies are cleared the default view type will be reset to 'entities', ... |
KB16225 | Replication network testing with DR Replication Simulation Tool | DR Replication Simulation Tool is for running network tests in different pathways in a DR environment. | Prerequisites
AOS version >= 6.8 for the source site.
No requirements for the remote sites.
DR Replication Simulation Tool helps you debug network issues and gives a potential idea of network delays to expect in the DR workflow.The tool provides you with a utility that can debug:
Connection issue in Control... | Running the simulation
To run the simulation, one needs to provide the -a / --all while running the script, -np / --num_of_pkts, -ps / --pkt_size, -mo / --max_outstanding_pkts can be provided additionally if not running with default values.
The tool for each site that is known to Cerebro, will return the following:
... |
KB14396 | Prism Central - "Virtual Switch API Fetch Error" when accessing a Subnet in PC UI | UI error "Virtual Switch API Fetch Error" seen when clicking on subnets in the Subnets dashboard in Prism Central | When navigating to the Subnets dashboard in Prism Central and clicking on a subnet, the error message "Virtual Switch API Fetch Error" appears. This error will appear for every subnet when clicking on it. This behavior is cosmetic in nature and will not prevent configuration updates for any subnets via CLI.Scenario 1To... | Scenario 1
This issue is resolved in pc.2022.9 or higher. Please upgrade to latest release from Support portal.
Scenario 2
This issue is currently tracked under ENG-624827, it happens because it fails to retrieve the distributed_virtual_switch(es) as their protos do not contain logical_timestamp.Adonis uses logical... |
KB7671 | SSH to Kubernetes VM does not work - Permission denied | This article describes an issue where SSH to Nutanix Kubernetes Engine does not work. | Nutanix Kubernetes Engine is formerly known as Karbon or Karbon Platform Services.Accessing an NKE Kubernetes node via SSH requires downloading an ephemeral certificate via the NKE UI or generating it the karbonctl utility. This certificate expires after 24 hours and must be re-downloaded. When the certificate expires... | Ensure you have validated the below points:
As VMs are locked down by design as a security feature, you need to download the SSH script from Nutanix Kubernetes Engine UI. Follow instructions under Accessing Locked Nodes in the NKE Guide https://portal.nutanix.com/page/documents/list?type=software&filterKey=software&f... |
""Title"": ""Hyper-V: TCP checksum mismatch causing Nutanix Cluster Service crashes"" | null | null | null | null |
KB7812 | NX-G6/G7: Nutanix BMC and BIOS Manual Upgrade Guide (BMC 7.10 and BIOS 42.600 and higher) | This article describes the upgrade procedure for BMC 7.10 and BIOS 42.600 and higher. As these are signed firmware versions, the upgrade procedure is different from previous releases. | This is the manual upgrade procedure for upgrading G6/G7 nodes to BMC v7.10, BIOS v42.600, and higher which are signed firmware versions. As a result, there is a deviation from the standard firmware upgrade procedure to transition from Unsigned to Signed firmware versions. LCM (Life Cycle Manager) support for upgrading... | BMC Upgrade Process:Note: BMC 7.15 resolves critical vulnerabilities in BMC IPMI firmware. For more details, please check Nutanix Security Advisory-30 https://download.nutanix.com/alerts/Security_Advisory_0030.pdf. The fix will not allow the upload of any unsafe config files. This means any previous saved config file ... |
KB13567 | IAM - Unable to log into PC - Permission Denied | Customer is unable to login into Prism Central with IAMv2 enabled. | The customer is unable to login into Prism Central with IAMv2 enabled and the customer is redirected to the HTTP 403 Error: Permission Denied Page.
Note: See KB 9696 for IAM Troubleshooting ( https://portal.nutanix.com/kb/000009696 https://portal.nutanix.com/kb/000009696 )
Note: The scenario encountered in this KB wa... | 1. Collect Mercury logs:
Enable Debug Logging:
nutanix@PCVM:~$ allssh curl http://0:9444/h/gflags?v=4
Attempt to log into Prism CentralDisable Debug Logging:
nutanix@PCVM:~$ allssh curl http://0:9444/h/gflags?v=0
Upload Mercury Logs to Diamond
2. Save Keys to a file
Save Keys
nutanix@PCVM:~$ curl -k https://iam-p... |
KB3670 | How to set MAC address for VM NIC on AHV cluster | This article describes how to set custom MAC address for AHV VM NIC. | In some cases, it may be required to change the MAC address of an AHV VM NIC. By default MAC addresses are dynamically generated during NIC addition. | Things to consider:
NIC MAC address can only be configured via aCLIIt is not possible to change the MAC address for an existing NIC. A NIC has to be deleted and then added back with the new MAC addressNutanix AHV assigns NIC MAC addresses from the range: 50:6B:8D:00:00:00 - 50:6B:8D:FF:FF:FFA statically configured MAC ... |
KB7865 | NCC Health Check: file_server_licensing_check | The NCC health check file_server_licensing_check checks if one or more cloned Nutanix Files file servers are in grace period of free licensing. | The NCC health check file_server_licensing_check introduced in NCC version 3.9.0 checks if one or more cloned Nutanix Files file servers are within the grace period of free licensing.
The check will PASS if there are no file servers, or if there are file servers and no clones, or if each clone is within the grace peri... | If this check returns INFO and generates a corresponding alert, it will indicate the remaining days outside of the 90-day free test period for the cloned file server.
Nutanix Files product is licensed on Used capacity - “Used TiB” of data, including Snapshot and Clones (just the deltas). After 90 days, File Server clo... |
KB13611 | Alert - A130382 - SynchronousReplicationPausedOnVM | Investigating SynchronousReplicationPausedOnVM issues on a Nutanix cluster. | This Nutanix article provides the information required for troubleshooting the alert A130382 - SynchronousReplicationPausedOnVM for your Nutanix cluster.
Alert Overview
The alert A130382 - SynchronousReplicationPausedOnVM is generated when the recovery site set up for synchronous replication becomes unreachable or th... | [] |
KB14067 | Foundation - HPE nodes foundation stuck in phoenix mode | HPE nodes foundation failed in Powering off nodes, and stuck in phoenix. | The foundation fails on HPE SPP versions earlier than 2022.09.01. The node's log error shows "computer system.v1_13_0 is not a valid system type."For the standalone foundation check the logs from GUI using the Log button or find the CVM running foundation service and check the foundation logs on this node if it's runni... | To resolve the issue, follow the recommendations below:
Ensure you are using Foundation 5.3.2 or later.Upgrade HPE SPP to 2022.09.01 or newer.Enable IPMI/DCMI over LAN (refer to KB-5494 https://portal.nutanix.com/kb/5494), and then re-attempt the foundation process. |
KB16418 | NDB | Deletion of VM does not occur if Provisioning operation fails at step " Activate Time Machine for database" | Deletion of VM is not happening if Provisioning operation failed during registration of database step "Activate Time Machine for database". | If the provisioning of a database with a new DBServer fails at the 'Activate Time Machine for database ...' step, the resulting VM will not be deleted during the rollback process. This is because the step to deregister and delete the DBServer fails, preventing the VMs from being deleted.Below is an example of such a sc... | Engineering is aware of this issue and working to resolve it in a future NDB release. Until then, if the issue is encountered, follow the workaround.Workaround:In the event of such failures, the virtual machine (VM) will always be retained and not automatically deleted. If required, the VMs can be deleted manually. |
KB9728 | NCC Health Check: nearsync_stale_staging_area_check | NCC 3.10.1. The NCC health check nearsync_stale_staging_area_check warns you if there is stale staging data from a NearSync restore operation which is older than 24 hours old and which exceeds 10 GB in size. | The NCC health check nearsync_stale_staging_area_check warns you if there is stale staging data from a NearSync restore operation which is older than 24 hours old and which exceeds 10 GB in size. Under normal circumstances, NearSync operations will clean up this data for you before it goes stale and this check was adde... | If you are seeing this check warning, you should open a case with Nutanix Support for help with this issue. Once the support case is open, Nutanix Support can help with confirming this check failure and help with manually cleaning up the stale data, if required. Since this is a manual process, we currently only suggest... |
KB4423 | AOS Upgrade or CVM Memory Upgrade Stalls on VMware Cluster | When upgrading from AOS 5.0.x or earlier release to AOS 5.1/5.5/5.6, Controller VM memory is increased by 4GB by the finish script. In some cases, the script fails to re-configure the Controller VM, causing the upgrade process to stall. Similar issues can occur when upgrading CVM memory through Prism in 5.1.x or later ... | Please Note: Below KB article is only applicable for clusters running below AOS 5.5.4, The issue listed below is resolved for all greater AOS versions.
This article is divided into 2 parts and applies to
1. Controller VMs (CVMs) in ESXi clusters. 2. CVMs with 32 GB of memory or higher are not affected.3. For nodes wi... | Problem # 1 - Firewall Rule Issue
Fixed with AOS 5.1.1
Workaround for older versions
1. Record the current status of the following firewall rule from the local ESXi host to the CVM which is stuck in the upgrade:
root@host# esxcli network firewall ruleset list | grep -i httpClient
2. Log on to the ESXi host (by usin... |
KB9909 | Nutanix Files - Deployment network check fails and UVMs update properties stuck on loading to get information from vCenter | Nutanix Files deployment fails on network check, UVMs unable to get update/details from vCenter. | Under certain conditions where HTTP protocol/port 80 is blocked, customers may run into the following issues:
The deployment of Nutanix Files does not detect the network configurations from vCenter and cannot proceed if the Network pre-req check has failed.Properties of UVMs from Prism are stuck on loading while tryin... | Consider opening the required ports. The following is the list of firewall ports that must be open to successfully access the Nutanix cluster.
vCenter remote console: 443, 902, 903 from both the user host and vCentervCenter from Prism web console: 443, 80
The requirement to use Best Practices for connection using ext... |
KB3209 | Prism Central alerts - Cluster is running out of storage capacity in approximately 0 days | The Capacity Runway uses n+1 configuration, which means it takes out 1 node capacity during total calculation since that capacity is required for node recovery in case of a node failure. In case of a node failure, a 3-node cluster does not have sufficient capacity to rebuild, hence the 0 days estimation. | Prism Central displays a critical alert on the Prism Central Alerts page:
Cluster <name_of_cluster> is running out of storage capacity in approximately 0 days
On the Prism Element page of the cluster, no alerts are displayed.Alerts displayed are for storage capacity, and also for CPU and memory. | This alert is displayed on a 3-node cluster managed by Prism Central. Prism Central Storage Runway calculates the total amount of available storage space using the n+1 configuration as part of Prism Central Capacity Runway.
The Capacity Runway uses n+1 configuration, which means it takes out 1 node capacity during tota... |
KB8091 | CVM won't power on after maintenance on ESXi Host | Unable to power on the CVM after a Maintenance on the ESXi Host or increasing the CVM memory. Power on task in the vCenter server completes, but CVM doesn't power up | Checking the ESXi hosts /var/log/hostd.log for ServiceVM_Centos we see that VM is marked to be in Invalid state and transition to VM_STATE_OFF right after the power on attempt.
2019-08-31T02:16:17.572Z info hostd[F381B70] [Originator@6876 sub=Vmsvc.vm:/vmfs/volumes/5b9a731a-7ede90c2-8e9d-e4434b0f3974/ServiceVM_Centos/S... | We can check the amount of memory assigned to the CVM and confirm the same with customer if it was increased recently.As in this scenario the memory assigned is 36 GB.
[root@hqidvntxvh09:/vmfs/volumes/5b9a731a-7ede90c2-8e9d-e4434b0f3974/ServiceVM_Centos] less ServiceVM_Centos.vmx | grep -i mem
1st issue - This error oc... |
KB13452 | AHV Citrix Director Plugin: Install error “Citrix Director is not installed. Please install Citrix Director to proceed" | AHV Citrix Director not installing due to error “Citrix Director is not installed. Please install Citrix Director to proceed" even though Citrix Director is installed. | When installing the AHV Citrix Director plugin, the installer looks for the below registry keys in the below location.
SOFTWARE\Wow6432Node\Citrix\DesktopDirector
New versions of Citrix Director (i.e. Director from Citrix Virtual Apps and Desktops 7 2206) do not create registry keys in the above location, which cause... | Open regeditExpand HKEY_LOCAL_MACHINE > SOFTWARE > WOW6432Node > CitrixRight-click Citrix > New > KeyName it "DesktopDirector"In the right pane, add new string values. Right-click an empty area, then click New > String ValueCreate the following string values and right-click on each, then click Modify and add the follow... |
KB12999 | Nutanix Files: "Invalid IP format" error when configuring NFS exceptions | When configuring NFS exports with clients that have exceptions (read/write | read-only) to the default access behaviour via the Files Console, the error "invalid IP format" is returned. This issue is fixed in Nutanix Files 4.1.0. | When configuring NFS exports with clients that have exceptions (read/write | read-only) to the default access behaviour via the Files Console, the below error is seen:
invalid IP format
| This issue is fixed in Nutanix Files 4.1.0. Upgrade to the latest Nutanix Files version or follow the steps below for the workaround.
From any CVM run the below to identify the current clients with read-write and note the UUID and Share UUID.
ncli fs list-all-fs-shares | grep -B15 -A11 "/<share name>"
Example:
nutan... |
KB4409 | LCM: Life Cycle Manager Troubleshooting Guide | This article lists the most commonly encountered issues with respect to LCM. There are separate KB articles created for individual LCM issues. Present article is helpful in general LCM troubleshooting. | LCM Introduction
Life Cycle Manager (LCM) is the 1-click upgrade process for firmware and software on Nutanix clusters. This feature can be accessed through the Prism UI. Select the LCM entity from the pull-down list after the cluster name.
LCM performs two operations:
Inventory – detects what can be managed on a clust... | Below are the best practices for troubleshooting a failure in LCM.
Download failures
LCM framework requires connectivity to the URL to perform its operations. If a download failure occurs, the error below is displayed:
Operation Failed. Reason: Failed to download manifest sign file
Triage processLook at the lcm_wget.l... |
KB6902 | False positive Disk failure alert on Lenovo Platforms | This article describes an issue where false alerts were observed on Seagate drives on Lenovo platforms. | NOTE: This issue has been observed on Seagate drives only.
We have observed false positive disk failure alerts for Seagate drives (e.g. ST2400MM0129) on Lenovo platforms.
Alert message would be like this:- Drive xx with serial xxxxxx and model ST2400MM0129 in drive bay 10 on Controller VM x.y.z.10 has failed.
Starga... | This issue has been fixed in AOS 5.10.7 and 5.11.1. Please upgrade your cluster's AOS version to resolve the issue. |
KB4302 | Adding a New Metadata Disk to an Existing Cloud Controller VM in AWS | This KB article describes how to attach an additional metadata disk to your cloud Controller VM in AWS | Note: Nutanix has announced End Of Life for Azure Cloud Connect Feature. For more information refer to the Azure Cloud Connect End of Life bulletin https://download.nutanix.com/misc/AzureCloudConnectEOLNotification.pdf, To manage existing deployments refer to KB 10959 http://portal.nutanix.com/kb/10959If the metadata... | Perform the following procedure to attach an additional metadata disk to your cloud Controller VM in AWS.
Start the Dynamic Ring Changer service on the cloud Controller VM.
Set the cloud_start_dynamic_ring_changer gflag to true in the /home/nutanix/genesis.gflags file.
--cloud_start_dynamic_ring_changer=true
Re... |
""Verify all the services in CVM (Controller VM) | start and stop cluster services\t\t\tNote: \""cluster stop\"" will stop all cluster. It is a disruptive command not to be used on production cluster"": ""You could even do a “dry-run” to see what the result would be before installing updates or upgrading drivers"" | null | null | null |
KB14995 | Prism Central upgrade may fail if PCVM is improperly moved to a new cluster | The only supported method to relocate a Prism Central VM (PCVM) cluster is by using Prism Central Disaster Recovery feature. If the PCVM is migrated using another method such as shared-nothing vMotion, then subsequent upgrades of Prism Central can fail. | The only supported method to relocate Prism Central (PC) from one cluster to another is using the Prism Central Disaster Recovery feature and performing a planned failover. Any other method used to relocate the PCVM(s) will cause subsequent upgrade workflows of Prism Central to fail.
Typically, the upgrade workflow fa... | If it is necessary to relocate the PCVM(s), use PC DR features to set up replication of the Prism Central deployment on the target cluster. Refer to Prism Central Guide https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism:mul-cluster-pcdr-introduction-pc-c.html for instructions.
If you h... |
KB4562 | How to recreate and define CVM XML on AHV host | KB article to outline the recreation of CVM .xml file in the event that it is corrupted or missing | This KB was created from a specific corner case in which a CVM.xml file was corrupted, and cleaned up with FSCK after a DC power event. Note that there could be alternate scenarios in which the CVM.xml file can be missing/corrupted. Use this KB article for guidance on the recreation of the .xml file.
Scenario : Custom... | The steps below are only applicable for AHV versions older than 20230302.100173.Starting with AHV 20230302.100173, CVM is automatically recreated on every host reboot using configuration from the /etc/nutanix/config/cvm_config.json file. Updating CVM XML on AHV won't guarantee changes will persist across host reboot or... |
KB15527 | File Analytics with CAC Authentication | Instructions on how to enable CAC for File Analytics. | If Prism Central is using CAC authentication, it can be enabled for File Analytics v3.3 and later. | Note: These instructions can be found in the README on the File Analytics VM (FAVM) in /opt/nutanix/analytics/generate_fa_certs/Pre-requisites:
Minimum version: File Analytics 3.3.0File Analytics already deployed/upgraded. If a File Analytics deployment or upgrade is failing due to CAC authentication being enabled on ... |
KB10289 | Karbon 2.0.1 to 2.2 - cni config uninitialized after host reboot post os-image upgrade | cni config uninitialized after host reboot post os-image upgrade | Nutanix Kubernetes Engine (NKE) is formerly known as Karbon or Karbon Platform Services.Symptoms
Karbon hosts has been created pre 2.0.1, Karbon has been upgraded to > 2.0.1 and a host (os-image) upgrade has been performed recently.After a reboot the host will stay in NotReady state with the following errors observed i... | To fix the ongoing cni issue :
Edit the /etc/cni/net.d/10-flannel.conflist on the affected node and add the missing "cniVersion": "0.3.1"
from
{
to
{
Then restart kubelet (systemctl restart kubelet-worker ((or kubelet-master))
Keep in mind the above workaround will be removed during next host rebootTo permanentl... |
{ | null | null | null | null |
KB6224 | Prism Central: Error message "Showing XX of YY permissions in role. To view all permissions please use the API." | This article describes the Prism Central error message "Showing XX of YY permissions in role. To view all permissions please use the API" and how to resolve it. | In Prism Central > Administration > Roles page, when attempting to Update, Manage or Clone a Role, you might see a warning banner:
Showing-XX-of-YY-permissions-in-role-To-view-all-permissions-please-use-the-API
Where:
XX would be the number of permissions the UI is displaying; andYY would be the number of permission... | This warning banner is seen when the Role has been created using API and it contains permissions that the UI does not have access to.
The UI has only a subset of the total permissions available via the API.
To proceed, use the API to update/manage/clone such roles created by the API. If you proceed with the operation... |
KB8351 | Network changes on a AHV host can cause lead to an outage due to extended zookeeper leader election time | Network changes on a AHV host can cause lead to an outage due to extended zookeeper leader election time | A network change such as updating bridge configuration on AHV hosts can lead to a cluster outage due to network partitioning and multiple zookeeper elections happening. Below there is a depiction of the events of ONCALL-5773 and how a network change impacted the whole cluster:
Customer enabled LACP time fast on a no... | ENG-226742 https://jira.nutanix.com/browse/ENG-226742 has been filed to relinquish Zookeeper leadership from a node when the CVM is set to maintenance mode to avoid unnecessary zookeeper migrations. |
KB1976 | RMA: Return Instructions (Mexico) | This KB shows the printout sent to the customer when a replacement part is requested. | Below is the return instruction letter provided with a replacement part. Spanish and English translations are listed. | AVISO IMPORTANTEReferente a la Devolución de Productos
Este envío contiene equipos designados como reemplazo de acuerdo al RMA de Reemplazo Avanzado. Bajo los términos de la política de RMAs de Nutanix, el equipo defectuoso debe ser devuelto a Nutanix dentro de un plazo no mayor a 7 días.Favor de seguir los pasos aba... |
KB16470 | HTTP Proxy - Error: Unable to resolve FQDN as hostname with current DNS settings | Prism and NCLI will return the unable to resolve X as hostname with current DNS settings when attempting to modify the http-proxy whitelist if an existing FQDN entry is no longer available / does not resolve against the DNS servers | Prism and NCLI will return "Error: Unable to resolve <FQDN> as hostname with current DNS settings" when attempting to modify (add/remove) an entry from the http-proxy via Prism UI or ncli.A common example of this issue would be after a cluster was decommissioned and all records were scrubbed client-side, but the FQDN s... | 1. Get a list of the existing targets on the http-proxy whitelist
nutanix@NTNX-PCVM:~$ ncli http-proxy get-whitelist
Optionally grep for the base domain and get all results - customer should have some input on which are no longer in use
nutanix@NTNX-PCVM:~$ ncli http-proxy get-whitelist | grep "example"
2. Get a list ... |
KB7345 | Hyper-V Highly Available VM's disappeared from Hyper-V manager and Prism | the steps about how to fix the problem that if the VM's on the Prism and Hyper-V Manager disappeared after a Storage downtime. | We have seen situations where the VM's on the Prism and Hyper-V Manager disappeared after a Storage downtime. Even the PowerShell command Get-VM does not show any VM.I would like to discuss one specific situation here where the complete Storage was down for some time. After the Nutanix Storage is brought back up, there... | Let's have a look at the Cluster Resource policies page to understand the issue. Each Virtual Machine in a Failover cluster is contained in an entity called as Cluster Group. The Virtual Machine Cluster group contains cluster resources as below:1. Virtual Machine Resource - Corresponds to the actual virtual machine2. V... |
KB9220 | Changing ownership of applications, blueprints and users to other projects in Calm not supported. | Changing ownership of VMs, applications and blueprints between projects in Calm is not supported. | Nutanix Self-Service is formerly known as Calm.If a VM or an application or a blueprint is moved from one project to another, the entity does not appear as part of a new project on the Calm UI to any user.
The VM's configuration shows that the VM is correctly associated with the new project on the CLI. You will see a ... | Nutanix Engineering is aware of the issue and is working on a solution. In the meantime, a workaround is available. Re-deploy the entity in the new or correct project for the entity to appear correctly. |
KB4806 | Dell Support Portal Registration Guide | Dell Support Portal Registration Guide: This article describes how you can register for the Nutanix OEM portal access. | The following article describes how to register for the Nutanix OEM portal access. | Perform the following procedure to register the Nutanix OEM portal access.
In the address bar of a web browser, type: https://my.nutanix.com https://my.nutanix.com and press Enter.Click Sign up now.Type the values of First Name, Last Name, Email, Password in the fields and click Submit. Note: Follow to the specified ... |
KB3629 | How to generate memory dump for hung Windows VM on AHV | This article describes how to generate a memory dump for a VM running on AHV. | For troubleshooting unresponsive VMs Nutanix support can request to generate a memory dump for analysis. This article describes how to generate a memory dump on Windows VMs. | The only way to generate a memory dump from hung VM is to inject NMI interrupt into a Windows guest and triggering Windows to bugcheck.
Follow the instructions described in the following Microsoft KB article to configure the VM for crash on NMI: https://docs.microsoft.com/en-US/windows/client-management/generate-kern... |
KB17145 | Unable to remove VLAN from Self-Service Application | Subnet is unable to be removed from the environment, as it is still referenced by the application, despite having been removed. | Attempting to remove an unnecessary subnet from a Self Service Environment is unsuccessful due to the subnet still being referenced in an existing Application.Navigating to that Application, it does not show the subnet in question as present.
In this scenario, the user had a VM created from that Application, and had re... | Confirmation:
Get the application UUID from the GUI.Get the subnet UUID from nuclei subnet.list
nutanix@PCVM:~$ nuclei subnet.list
2024/07/16 14:16:32 ZK : Initiating connection to server X.X.X.30:9876
2024/07/16 14:16:32 ZK : Connected to X.X.X.30:9876
2024/07/16 14:16:32 ZK : Authenticating connection 0x0
2024/07/16... |
""Title"": ""Unable to create VMs in SSP on AOS 5.1.1.1 and 5.1.1.2"" | null | null | null | null |
KB6429 | Pre-Upgrade Check: test_supported_multihome_setup | test_supported_multihome_setup checks if the cluster is a multihomed setup. | This is a pre-upgrade check that that checks if the cluster is a multihomed setup. If Zookeeper/Nutanix services are using eth0 for communication, then the check would pass. If they are using eth2, then this is not supported, and the check would fail.
Note: This pre-upgrade check runs on Prism Element (AOS) as well as... | See table below for the failure message you are seeing in the UI, some further details about the failure message, and the actions to take to resolve the issues.
[
{
"Failure message seen in the UI": "Zookeeper servers are configured on eth2. This is an unsupported multihome setup. Contact Nutanix Support for a... |
KB13245 | PC - Some LDAP users cannot login to Prism Central due to "Server not reachable" error | Some AD users cannot login to Prism Central, they get "Server not reachable" error when they redirected back to the login screen. | Scenario 1: Some Active Directory users cannot login to Prism Central due to "Server not reachable" shown right after they try to login with LDAP credentials. Note: "Server not reachable" is a generic error message and you need to confirm the problem in aplos log.On Prism Central in /home/nutanix/data/logs/aplos.out lo... | This issue may happen if a customer has IDP and LDAP (AD) authentication providers configured. If IDP (e.g. ADFS) is configured to return User Principal Name (UPN) in NameID claim, it may lead to user_uuid collision for two user accounts (with "kDIRECTORY_SERVICE" and "kIDP" types) of abac_user_capability type due to t... |
""ISB-100-2019-05-30"": ""Title"" | null | null | null | null |
{ | null | null | null | null |
KB16376 | Nutanix Files - SmartDR Planned Failback stuck at 50% for max 4 hours leaving shares inaccessible | Nutanix Files - SmartDR Planned Failback stuck at 50% for hours with 'Planned FailOver Failback for Files' on PC minerva tasks | During smart DR failback operation, Prism central task may get stuck on 50% for maximum of 4 hours, then failing.During this time, file server shares are in read-only mode on both sites.Verification :
Checking PC task on the remote site, ~/data/logs/files_manager_service.out in PCVM:
nutanix@NTNX-A-PCVM:~$ ecli tas... | Checking the network bandwidth using KB-13052 https://portal.nutanix.com/page/documents/kbs/details?targetId=kA07V000000LZLwSAO showed that much data needed to be replicated with a limited bandwidth.The problem is that a reverse replication policy was not created initially when failover was performed, hence by doing... |
KB3709 | NCC Health Check: switch_interface_stats_collector | The NCC health check switch_interface_stats_collector verifies if interface statistics are being collected from the network switches. This check runs only on AHV node clusters. | The NCC health check switch_interface_stats_collector verifies if interface statistics are being collected from the network switches.
The check fails if interface statistics are not being collected from the upstream switch.
When you add a switch configuration in Prism, if SNMP and LLDP connectivity are available, the... | Steps to verify if the configurations are in place:
Verify if LLDP or CDP is enabled on the upstream switch connecting to Nutanix hosts.
From the AHV host, verify if the LLDP or CDP packets are getting discovered by either running packet capture to see if the packets are received, or use the following command.
[ro... |
KB15051 | AHV Hosts non-schedulable or VM connectivity issues caused by duplicate Flow Network Security rule entries in table=6 | On clusters running AHV, hosts can become non-schedulable or non connected due to bloated vNIC's metadata in OVS table 6 in br0.local
Duplicate entries in table 6 can cause the overflow of resubmit actions of broadcast in taps leading to VM connectivity issues | Affected AOS versions are from 6.1.2 to 6.5.2.7.Scenario 1Symptoms observed include reconciliation delays/failures during acropolis leadership changes triggered by common maintenance operation (upgrades, CVM memory reconfig, ...), which can lead to HA Event and unexpected UVMs reboot.Identification:
We may see some AHV... | Permanent fix :This issue is caused by https://jira.nutanix.com/browse/ENG-534330 https://jira.nutanix.com/browse/ENG-534330, and an upgrade to AOS 6.5.3 or newer is needed to fix this issue permanently.Workaround for Scenario 1Check if the Flow Network Security is enabled on this cluster
nutanix@CVM:~$ microsegmentat... |
""ISB-100-2019-05-30"": ""Title"" | null | null | null | null |
KB16077 | How to create an NX Core quote | null | This guide will allow you to create a quote for a "NX Core" model at cost, fully decoupled from the software. Licensing through this type of quotation should be quoted based on the number of Cores into the configuration. | For step-by-step instructions, click here https://drive.google.com/file/d/1ZWh2XybcrZudwWXIo-979A1Vj7tJ508k/view?usp=sharing. Point of contact: sarahi.monroy@nutanix.com and salesupport@nutanix.com |
KB1283 | Mellanox QSFP-SFP+ Adapter (QSA) support note | This article describes the Mellanox QSFP to SFP+ Adapter (QSA). | The QSA is a mechanical QSFP to SFP+ Adapter. It is strictly a mechanical adapter. See here http://www.mellanox.com/pdf/prod_cables/QSA.pdf for the product brief. This connector allows an SFP+ cable to attach to the QSFP cage (with low insertion loss).
Note: Everything here is in the Electrical Domain.
Once the sign... | null |
{ | null | null | null | null |
KB10573 | Alert - 130352 - VolumeGroupProtectionMightFailPostRecovery | This alert reports that the Recovery of the Volume Group might fail if the Recovery site does not support multisite protection. |
Note: This alert will be retired in a future release. Make sure you are running the latest version to avoid retired alerts.
This Nutanix article provides information required for troubleshooting the alert VolumeGroupProtectionMightFailPostRecovery for your Nutanix cluster.
Alert overviewThe alert VolumeGroupProtecti... | If the Remote (Recovery) cluster is running an AOS version that is less than 5.19 (STS) and using a multisite configuration, it is highly advisable to upgrade the cluster to 5.19 (STS) or above. Information on Long-Term Support (LTS) or Short-Term Support (STS) releases can be found in KB-5505 http://portal.nutanix.c... |
KB13565 | Nutanix Files - Quota limit usage is not calculate correctly | Nutanix Files - Quota limit usage is not calculate correctly. | Identity Mapping (IDMAP) is the mechanism with mapping between Windows security identifiers (SIDs) to Unix/Linux UIDs and GIDs.For further information on IDMAP, please see this link. https://www.samba.org/~ab/output/htmldocs/Samba3-HOWTO/idmapper.htmlThe UID for specific user is generated based on range number, ranges... | Nutanix Engineering is aware of the issue and will support for distributed autorid feature on Nutanix Files 4.2.However, this feature is enabled only when deploy new file server on Nutanix Files 4.2 and is disabled on upgraded file server by default.Engineering will provide steps to fix autorid.tdb and script to correc... |
KB14198 | UpdateVmDbState task can often be seen on AHV clusters | UpdateVmDbState task can often be seen on AHV clusters | UpdateVmDbState task can often be seen on AHV clusters.Depending on AOS versions, it can be found on the Tasks page or in the "VM tasks" tab in Prism Element.This task often appears for VMs that have NGT enabled. | This internal task does not affect the functionality and can be safely ignored. |
""Title"": ""Cluster Expansion fails if Nutanix cluster is configured to use vLANs"" | null | null | null | null |
KB10111 | Alert - A130124 - Metro availability Pre-Checks failed | Investigating MetroAvailabilityPrechecksFailed issues on a Nutanix cluster. | This Nutanix article provides the information required for troubleshooting the alert MetroAvailabilityPrechecksFailed for your Nutanix cluster.
Alert OverviewThe Metro Availability Prechecks Failed alert can be generated if Metro availability operation could not be started.
Sample alert
Block Serial Number: 16SMXXXXX... | The issue arises due to an operation at the host level and hence its not a specific cause that can be pre-determined. If the check fails consider engaging Nutanix Support.Collecting Additional InformationBefore collecting additional information, upgrade NCC. For information on upgrading NCC, refer KB 2871 https://port... |
KB8223 | NCC Health Check: key_manager_checks | Introduced in NCC 3.9.3, the health checks sed_key_availability_check and sw_encryption_key_availability_check will check if the cluster disk passwords and the software encryption keys (respectively) are missing in the key management server configured on the Nutanix cluster. Additionally, local_key_manager_unsafe_mode_... | The NCC health checks sed_key_availability_check and sw_encryption_key_availability_check will check if the cluster disk passwords and the software encryption keys (respectively) are missing in the key management server configured on the Nutanix cluster. These plugins were introduced in NCC 3.9.3.The NCC health check l... | For details on configuring data-at-rest encryption, see AOS Security Guide https://portal.nutanix.com/page/documents/details?targetId=Nutanix-Security-Guide-v5_17:wc-security-data-encryption-wc-c.html.
Investigating a FAIL
1. For sed_key_availability_check and sw_encryption_key_availability_check
Engage the third pa... |
KB15099 | NX-G8 node - Kernel Panic due to CPU internal execution error | The article describe a situation that NX-G8 node crashes frequently due to kernel panic that caused by processor errors | It's seen in the field that NX-G8 node may experience kernel panic and crash frequently. Here are the steps to identify the issue:
Check if the crash dumps are generated under /var/crash in the AHV host:
[root@AHV ~]# ls -lahtr /var/crash/
Check the file vmcore-dmesg.txt in these directories, the following errors cou... | Note: HW engineering identified the ppin value 0x42a513c0e7d51607 as a CPU internal execution error.
FaultCPU= ICX
If the BIOS version is WU20.005, upgrade to the latest version WU40.002 and see if the issue still happens.If the node still crashes after the upgrade, collect HW logs:
KB-2893 https://portal.nutanix.com/... |
KB6734 | AHV host management network troubleshooting | This KB aims to provide some troubleshooting commands to aid in situation where the AHV Host Management network has connectivity issues | This article is to aid SREs or customers in situations where only AHV management network is reportedly having connectivity issues and no issues reported with the User VMs or CVM. This may be visible via Alerts in Prism, or the host being marked degraded or via intermittent ping drops to the Management IP. AHV upgrade m... | Confirm if the AHV management IP is reachable by pinging from its own CVM and also another CVM. If the issue is seen only from the external CVMs, then the problem most likely has something to do with the external network (including AHV configuration like teaming modes). Perhaps point 2 and 3 are of use here. If you not... |
KB13725 | cassandra-token-range-skew-fixer start/stop can prevent node from being added back to metadata ring | cassandra-token-range-skew-fixer start/stop can prevent node from being added back to metadata ring | After starting a cassandra-token-range-skew-fixer operation as per the instructions in the KB 1342 https://portal.nutanix.com/kb/1342, the operation may be aborted by the user using the "ncli cluster cassandra-token-range-skew-fixer stop" command.
Under some circumstances, after the operation is aborted, the Cassandr... | Workaround:
Cancel the node addition using the script from KB 5747 https://portal.nutanix.com/kb/5747:
nutanix@cvm$ /home/nutanix/cluster/bin/cancel-node-addition.py --node_ip=<insert_limbo_cvm_ip_address>
Check that Cassandra on the node which is not part of the ring is stable - this is indicated by the lack of FA... |
KB15995 | Nutanix Files: FSVM is consistently experiencing crashes, resulting in degraded performance | FSVM is consistently experiencing crashes, resulting in degraded performance and stargate shows Disk IO error due to network problem. | File Servers Virtual machines may randomly crash.Crash dumps will be keep generating on FSVM, when a FSVM is stunned due to high IO wait time in mpstat.The below is an example of what the core dump contained in this scenario:
root@NTNX-xx-xx-xx-xx-A-FSVM:/home/nutanix/data/cores/127.0.0.1-2023-03-30-19:20:44# gunzip ... | The issue stems from a network problem on the underlying host, impacting the Stargate operation. Consequently, this disrupts the Stargate operation, resulting in packet drops for IO operations. The aftermath of these packet drops includes elevated IO wait times for the FSVM, ultimately causing it to enter a crash loop.... |
KB9138 | LCM on INSPUR - BIOS-BMC Compatibility matrix | BMC can only be upgraded from a specific version of BMCs. BIOS Upgrade is dependent on BMC version. | BMC can only be upgraded from a specific version of BMCs. BIOS Upgrade is dependent on the BMC version. | Inmerge 1000 series:
Inmerge 900 series:
[
{
"Update version": "BMC 4.25.7",
"Compatibility": "Upgrade from previous versions 4.25.2, 4.25.5 and 4.25.6"
},
{
"Update version": "BIOS 4.1.13",
"Compatibility": "Upgrade is dependent on BMC 4.25.7 and supported from BIOS version 4.1.11"
},
{
... |
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