rghosh8/supportGPT_data huggingface dataset:
### Human: Can you tell about NCC Health Check: esx_product_locker_setting_check. ### Assistant: 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$ ncc health_checks run_all

Or run this check separately:

nutanix@cvm$ ncc health_checks run_all

You can also run the checks from the Prism web console Health page: select Actions > Run Checks. Select All checks and click Run.

This check is scheduled to run every day
Sample outputFor Status: PASS

nutanix@cvm$ ncc health_checks run_all
For Status: FAIL

nutanix@cvm$ ncc health_checks run_all
For Status: INFO

nutanix@cvm$ ncc health_checks run_all
 

Output messaging

Check ID106420DescriptionCheck ESXi ProductLocker settingsCauses of failureThe host contains a ProductLocker location that is not properly configuredResolutionsManually configure the ProductLocker location. Review KB 10204.ImpactCVMs appear to be stunned or frozen periodically on an ESXi cluster, potentially causing instability of cluster services and VMs. This issue can affect multiple CVMs at once, causing a complete cluster outage.. 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 / | grep ^l'

In the above example, we can see the /productLocker symlink is pointing to a non-local datastore. You may see the following ESXi setting changed to the path seen below in the String Value line:

[nutanix@CVM] hostssh 'ls -latr / | grep ^l'
Note: If the productLocker String Value points to a Metro Protected datastore, engage Nutanix Support for remediation. If Metro Availability is disabled, do not re-enable and engage Nutanix support immediately. Re-enabling Metro in this state can cause CVMs to lockup and restart, leading to a potential outage.In order to resolve this issue, reconfigured ESXi hosts to point productLocker back to local SATADOM (default config). For more information on this, you can refer to the below VMWare article. Ensure the change is effective.

In case the above-mentioned steps do not resolve the issue, engage Nutanix Support, gather the output of "ncc health_checks run_all" and attach it to the support case. . ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about ESXi - Rename an ESXi host in a Nutanix Environment. ### Assistant: This article provides a proper way to rename an ESXi host, especially after running a bare-metal Foundation install. This also includes non-configurable components which needs to be checked before changing any aspect on Esxi hosts.. For changing the hostname of an ESXi host, as far as Nutanix is concerned, renaming a host is an instant and secure procedure, and can be done by following VMware instructions, from the below VMware Article: Changing the name of an ESX or ESXi host (1010821).
The following ESXi settings should NOT be manually changed as some of them are non-configurable config and others have dependency on Esxi functionality (Please involve VMware technical Support in case there are any concerns on these components):

NFS  datastore settingsVM swapfile locationVM startup/shutdown orderCVM NameCVM virtual hardware configuration file (.vmx file)Each AOS version and upgrade includes a specific CVM virtual hardware configuration. Therefore, do not edit or otherwise modify the CVM virtual hardware configuration file.iSCSI software adapter settingsvSwitchNutanix standard virtual switchvmk0 interface in port group "Management Network"vSwitchNutanix standard virtual switchSSH enabledHost firewall ports that are open

For a complete information please refer to the Non-configurable Esxi Components outlined in Non-Configurable ESXi Components.. For reference, you can check the below steps to change the hostname:

Log in to the ESXi host to rename through SSH or DCUI. Display current hostname:
	root@esxi# hostname
	Run the following command to change the hostname:
	root@esxi# hostname
	Run the following command to set the fully qualified domain name. Note that --host and --fqdn are mutually exclusive.
	root@esxi# hostname
	Display the new hostname and fqdn:
	root@esxi# hostname
	To clear the domain name and leave only the hostname:
	root@esxi# hostname

	root@esxi# hostname
	Depending on the ESXi version, changes might be reflected automatically or imply a service restart. 
	​​​ESXi 5.1 / ESXi 5.5: After changing the hostname, execute the following command in the ESXi host. Prism will reflect the changes after about 30 seconds. Be aware that restarting hostd is a mildly disruptive operation.
		root@esxi# hostname
		​​​ESXi 6.x: Prism will reflect the changes automatically without restarting any service. 
	There is a known limitation with the NFSv3 implementation in VMware. The NFS lock files (.lck) in the VM directory will have the name of the previously named host no matter if existing, moved via VMotion or newly created VMs. This limitation only gets fixed by rebooting the ESXi host. We recommend rebooting the host after a host rename due to the fact that troubleshooting as well as log analysis can be more difficult. . ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about Genesis crashing "No vmknic exists in same subnet as eth0/eth2". ### Assistant: This article describes an issue where genesis is crashing with the message "No vmknic exists in same subnet as eth0/eth2.". While adding a new node to a cluster, the node is not being discovered because genesis is crashing and Foundation is not starting.

genesis.out log shows:

nutanix@CVM~$ less ~/data/logs/genesis.out. There are two possible reasons for the issue:

The CVM eth0 has an APIPA address. Modify /etc/sysconfig/network-scripts/ifcfg-eth0 and assign a static IP address, gateway and network mask. Change BOOTPROTO="dhcp" to BOOTPROTO="none".

	Here is an example of an ifcfg-eth0 output:

	nutanix@CVM~$ vi /etc/sysconfig/network-scripts/ifcfg-eth0
	Host vmk port has APIPA address assigned. The Host vmknic IP configuration can be checked with esxcfg-vmknic -l. Assign a static IP either through IPMI/DCUI or if there is an ssh connection through the CVM using the command below:
	nutanix@CVM~$ vi /etc/sysconfig/network-scripts/ifcfg-eth0
	After making either of the changes above, reboot the CVM:
	nutanix@CVM~$ vi /etc/sysconfig/network-scripts/ifcfg-eth0
	. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about Expand Cluster workflow fails on "Imaging of node" task. ### Assistant: Expanding an ESXi cluster with a node that requires uploading an ESXi iso for imaging may fail if the version of ESXi requested is not compatible with the AOS version running in the cluster.. Expand cluster workflow fails for an ESXi cluster when uploading an ESXi iso to reimage the new node.Clicking through Details hyperlinks of the "Node preparation for expand cluster" task, the task fails with "Imaging of node <new_node_ip> failed. Status: fatal: Running validations".Using allssh 'ls -larth ~/data/logs/foundation/2023*/' (replacing "2023" with the current year), we can locate node_<new_node_ip>.log.
nutanix@NTNX-CVM:~$ allssh 'ls -larth ~/data/logs/foundation/2023*/'
node_<new_node_ip>.log on the previously identified CVM shows the following StandardError. (NOTE: md5sum and versions mentioned can differ)

nutanix@NTNX-CVM:~$ allssh 'ls -larth ~/data/logs/foundation/2023*/'
 . Upgrade the cluster to the minimum AOS version mentioned in the error message, or use a lower version of ESXi and then upgrade the ESXi version outside of Prism Element UI to match the other hosts.. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about Ubuntu loads to a blank screen instead of login prompt from VM console.. ### Assistant: VM console shows black screen for Ubuntu VM, despite being able to SSH to the VM.. Ubuntu 16.04 with Kernel version 4.4.0-116 has a known issue that loads OS into a black screen instead of a login prompt (i.e., no display in Prism VM console), while SSH or OS operations are working fine.

root@vm-0:~# uname -a

root@vm-0:~# uname -a. This is a known issue in that kernel release. Upgrade the OS/Kernel to 16.04.5 and above to resolve the issue.As a workaround, use (Alt+F1) to change to tty1 to get to the login prompt. . ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about VirtIO 1.1.6 or newer installation on Windows 7, Windows Server 2008 R2. ### Assistant: Windows 7 and Windows 2008R2 require SHA2 support for Nutanix VirtIO 1.1.6 to be installed. Installation of VirtIO 1.1.6 or newer may fail on Windows 7 and/or Windows Server 2008R2 with the below error message: 
[Window Title]
Or if you install Windows 7 or Windows Server 2008R2 from Nutanix VirtIO 1.1.6 ISO: 
[Window Title]. Microsoft deprecated signing of kernel-mode drivers with SHA1 certificates in late 2019, hence as of VirtIO 1.1.6, all drivers are signed with SHA2 certificate only. Windows 7 and Windows Server 2008R2 do not have SHA2 support out of the box.To install Nutanix VirtIO 1.1.6, please make sure that Microsoft KB 3033929 is installed or the operating system is fully updated with Windows Update. For fresh deployments of Windows 7 or Windows Server 2008 R2 from Windows installation ISO on AHV clusters use Nutanix VirtIO 1.1.5. Once OS is installed, please install a fix from Microsoft KB 3033929 and then update VirtIO to 1.1.6.. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about USB passthrough support on Nutanix platforms. ### Assistant: Does Nutanix support USB passthrough?. Does Nutanix support USB passthrough?. Nutanix does not support USB passthrough on all platforms/hypervisors. There are no plans to support USB passthrough on Nutanix platforms due to security concerns and due to the fact that it affects features such as live migration, HA, 1-Click upgrades and more.

Alternative

If you need a guest VM to access USB devices, using AnywhereUSB is a valid solution. This solution uses a USB hub accessible over TCP/IP. A driver is installed on the VM and it emulates a USB device connected to the hub as if it was directly attached to the VM. This method is well-known to work and does not affect the features mentioned above. Please see the Digi site for further details: www.digi.com/products/usb-and-serial-connectivity/usb-over-ip-hubs/anywhereusb. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about "Host restore VM locality” task disappears in Prism if the VM migrations fail. ### Assistant: “Host restore VM locality” task may disappear in Prism if the VMs migrations fail. This may be observed if HA is enabled on the cluster and the cluster's memory usage is high.. When the AHV host is restarted, the AOS automatically creates a "Host restore VM locality” task to migrate VMs back to the host where they were initially running. In some cases, you may notice that such a task disappears from the Tasks page in the Prism UI.. Restore VM locality task is run on the best-effort basis as we cannot guarantee that all VMs can be migrated to the original host once it is recovered.It is by design behavior that the "Host restore VM locality” task is hidden on the Tasks page in the Prism UI if we cannot restore locality for all VMs. If locality was restored for all VMs then "Host restore VM locality” tasks will continue to be shown on the Tasks page.. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about How to troubleshoot Network Issues on ESXi in a Nutanix Block. ### Assistant: This article reviews troubleshooting techniques on the physical network layer of ESXi.. If the vSphere when a cluster is configured with Distributed Virtual Switches, health checks are enabled that identify misconfiguration of MTU, VLAN, Teaming and Failover: https://kb.vmware.com/s/article/2032878

Below are some of the things that can be checked when troubleshooting Network issues on an ESXi cluster configured with Standard Virtual Switches:

Check for the link and negotiation status:

~# esxcfg-nics -l

~# esxcfg-nics -l

Note: In some ESXi hosts, ethtool may fail with error "Can not get control fd: No such file or directory." Use esxcli network nic get -n  <vmnic#> instead to display the Network Device information. Example:

~# esxcfg-nics -l

  Check for link up/down/flapping. Log into the respective host and check the log file /var/log/vmkernel.log:

~# esxcfg-nics -l

Force re-negotiation by shutting down and bringing up a port:

~# esxcfg-nics -l

Check VLAN and MTU settings. Use CDP to find the VLAN and network interface it is connected to:

~# esxcfg-nics -l

Display the VLANs each port group is connected to:

~# esxcfg-nics -l

Check for MTU/duplex issues.

~# esxcfg-nics -l

~# esxcfg-nics -l

Check the interface for network errors. (The NIC interface is vmnic2 in this example. To see the list of NICs use the following command: esxcfg-nics -l):

~# esxcfg-nics -l

Note: For Mellanox, use:

~# esxcfg-nics -l

Check if the vmkernel network interface (vmk1) for vSwitchNutanix is enabled:

~# esxcfg-nics -l

Use the following command to enable the vmk1 interface:

~# esxcfg-nics -l. Resolve physical layer issues:
	Move it to a different switch portChange the cableReplace the NIC
	Resolve VLAN issues. Check the VLAN tagging in the management port group. It should match the appropriate VLAN, or if it is a native VLAN, remove the tagging.Resolve packet drop and network latency issues:
	Check the CVM /home/nutanix/data/logs/sysstats/ping_*.INFO for "unreachable" errors by running the following command:
		nutanix@cvm$ cat ~/data/logs/sysstats/ping_*.INFO | egrep -i 'TIMESTAMP|unreach'
		Check the CVM for high network latency issues:
		nutanix@cvm$ cat ~/data/logs/sysstats/ping_*.INFO | egrep -i 'TIMESTAMP|unreach'
		Print any latency beyond 30ms:
		nutanix@cvm$ cat ~/data/logs/sysstats/ping_*.INFO | egrep -i 'TIMESTAMP|unreach'
		
	. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about How to Enable Share Clipboard on Zoom. ### Assistant: How to Enable Share Clipboard on Zoom during remote session. How to Enable Share Clipboard on Zoom during the remote session.. 1. Find the hidden toolbar at the top of the shared screen2. Click on "More" (three dots) -> "Remote Control"4. Make sure "Share Clipboard" is ticked. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about AHV ISO shows "PRE-RELEASE/TESTING" during installation. ### Assistant: Manual installation of AHV 20190916.x ISO downloaded from portal may show as "Pre-Release/Testing" on the installation screen.. Manual installation of AHV 20190916.x ISO downloaded from the portal may show as "Pre-Release/Testing" on the installation screen. This can be seen on UI in red.A similar message is observed during the boot in the text mode.. Installation of AHV directly from AHV ISO is not a supported workflow.In order to reinstall AHV, consider using the Host Boot Disk Repair workflow (the section about hardware replacement is not needed in this case and should be skipped).Or follow the steps in KB 3523 to make a bootable Phoenix ISO with bundled AHV and AOS bits.. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about Memory hot-add to a UVM running on AHV is rounded up to the next GB. ### Assistant: Hot adding memory is always rounded up to the next GB (e.g. setting VM memory to 3.1G will be rounded up to 4G). Setting UVM memory while powered off will always be set as it is without rounding up.. Hot adding memory to a user VM running on AHV will round up the added memory to the next Gb. That can lead to one of the following situations:

UVM's memory is currently set to a whole X GB, so setting it to any value with a fraction will be always rounded up to the next Gb value.
	Example: The VM currently has 8Gb of memory:

	nutanix@CVM:~$ acli vm.get <UVM_name>  | grep -i memory

	Attempting to increase the VM memory to 8392Mb:

	nutanix@CVM:~$ acli vm.get <UVM_name>  | grep -i memory

	The process completes successfully, however, verifying the actual amount of memory shows that the memory is now at 9Gb:

	nutanix@CVM:~$ acli vm.get <UVM_name>  | grep -i memory
	UVM's memory is currently set with a fraction of GB. Increasing the memory with any value will be rounded up to a Gb and then added to the old value.
	Example: The VM currently has 8.5Gb of memory (8704Mb):

	nutanix@CVM:~$ acli vm.get <UVM_name>  | grep -i memory

	Attempting to add 200Mb to that VM (end value 8904Mb):

	nutanix@CVM:~$ acli vm.get <UVM_name>  | grep -i memory

	The operation completes successfully, but instead of 200Mb it adds 1Gb to the original value. So, it rounds up the added amount to the next Gb value:

	nutanix@CVM:~$ acli vm.get <UVM_name>  | grep -i memory
	Cold adding/setting memory to a VM will always be set as entered and will not be rounded up.. To set the memory for a VM with a fraction of Gb, it is required to power off the VM and cold-add the memory.If the VM memory is already configured with a fraction of Gb, in order to set the whole Gb, the VM would need to be powered off.. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about AHV VMs may be restarted unexpectedly due to memory corruption. ### Assistant: In some cases, unexpected user VM restart can be caused by memory corruption. If Frodo process, which is responsible for servicing I/O generated by user VM, tries to access corrupted memory page, it will stop working and user VM will be rebooted.. In some cases, unexpected guest VM restart is caused by memory corruption. It may happen if the Frodo process, which is responsible for servicing I/O generated by guest VM, tries to access a corrupted memory page or during VM live migration.VM was rebooted during normal operations/home/nutanix/data/logs/acropolis.out log on CVM (Controller VM) that hosts Acropolis leader will contain the following events:

2019-08-28 23:02:32 INFO state_change_event_op.py:219 VM 77ea1286-5aed-4a80-9f31-8aa7d709f680 changed state: kOn -> kOff

/var/log/libvirt/qemu/<vm uuid>.log on the AHV host will contain the following events:

2019-08-28 23:02:32 INFO state_change_event_op.py:219 VM 77ea1286-5aed-4a80-9f31-8aa7d709f680 changed state: kOn -> kOff

/var/log/messages on the AHV host will contain the following events:

2019-08-28 23:02:32 INFO state_change_event_op.py:219 VM 77ea1286-5aed-4a80-9f31-8aa7d709f680 changed state: kOn -> kOff

VM was rebooted during live migrationThe migration task may fail with the following error:

2019-08-28 23:02:32 INFO state_change_event_op.py:219 VM 77ea1286-5aed-4a80-9f31-8aa7d709f680 changed state: kOn -> kOff

/var/log/libvirt/qemu/<vm uuid>.log on the AHV host will contain the following events:

2019-08-28 23:02:32 INFO state_change_event_op.py:219 VM 77ea1286-5aed-4a80-9f31-8aa7d709f680 changed state: kOn -> kOff

/var/log/messages on the AHV host will contain the following events:

2019-08-28 23:02:32 INFO state_change_event_op.py:219 VM 77ea1286-5aed-4a80-9f31-8aa7d709f680 changed state: kOn -> kOff

In addition, the following logs can confirm memory corruption:The following error can be seen in the /var/log/mcelog on the AHV host:

2019-08-28 23:02:32 INFO state_change_event_op.py:219 VM 77ea1286-5aed-4a80-9f31-8aa7d709f680 changed state: kOn -> kOff

You may notice on CVM that the value of the HardwareCorrupted counter is not equal to zero:

2019-08-28 23:02:32 INFO state_change_event_op.py:219 VM 77ea1286-5aed-4a80-9f31-8aa7d709f680 changed state: kOn -> kOff. The hardware issue is suspected to cause this problem. Make sure that the latest recommended versions of BIOS and BMC firmware are running and engage hardware vendors to perform hardware diagnostics. If the hardware is NX hardware, consider engaging Nutanix Support at https://portal.nutanix.com/.. ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.
### Human: Can you tell about AHV node removal stuck after successfully entering maintenance mode. ### Assistant: Node removal task for AHV host can get stuck if the the host has already entered maintenance mode before the node removal task was triggered.. Node removal task for the AHV host can be stuck if the host had already entered maintenance mode before the node removal task was kicked.Below are the symptoms and the methods to verify if you are hitting the same issue:
AHV host has successfully entered maintenance mode. Connect to any CVM in the cluster and run the following command to check AHV host state:

nutanix@cvm:~$ acli host.list

Example output:

nutanix@cvm:~$ acli host.list

If the host is schedulable, then True value is shown in the Schedulable column. Otherwise, False value is shown.Run the following command to check AHV host state:

nutanix@cvm:~$ acli host.list

Example output:

nutanix@cvm:~$ acli host.list

Here we can see that host is in maintenance mode.

Node remove status for the host is MARKED_FOR_REMOVAL_BUT_NOT_DETACHABLE. Connect to any CVM in the cluster and run the following command to check the node removal status:

nutanix@cvm:~$ acli host.list

Example output:

nutanix@cvm:~$ acli host.list

Node is removed from the Cassandra ring. Connect to any CVM in the cluster and run the following command to check that the node has been removed from the Cassandra ring:

nutanix@cvm:~$ acli host.list

Here we can see that node has been removed from the Cassandra ring.

Node is present in the Prism Hardware list with the status of "Being removed".. This is a known issue that is resolved in AOS 5.15.2 and above versions. Upgrade AOS to the latest supported version to avoid this issue.If currently affected by this issue then gather the information above and engage Nutanix Support to resolve the issue.When logging a support case with Nutanix Support on this issue. Collect the log bundle using Logbay and upload it to the case directly via FTP/SFTP, or manually via the Support Portal.For more information on how to use Logbay, see KB 6691. To automatically upload the log bundle using Logbay, use the --dst (FTP/SFTP destination) and -c (support case number) options.

 . ### Human: Now explain this as a Nutanix support agent summarizing the answer step by step. In case, you don't know the answer say - I don't know.