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How It works

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Albert Mendoza

started this topic

New KB Articles Published on Week Ending October 29, 2022

Below are new knowledge base articles published on the week of October 23-29, 2022.KB 13136 - NCC Health Check: microservice_infrastructure_...

Alona

started this topic

Help us help you! Assign Support Contact to your Nutanix assets.

We know you care about your infrastructure. Every time and auto support ticket is created for one of Nutanix clusters a Support Engineer con...

1207 Topics

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sbarabNutanix Employee

posted in How It works

Opening "Remote Support" channel and troubleshooting for it

Occasionally you will need to deal with nutanix support who needs access to your cluster but not over a webex or zoom sessions. You can always setup a remote support channel so nutanix SREs can perform troubleshooting in the background, leaving you free to work on other more important issues in your environment. Simply run:To check if it is already set up:nutanix@cvm$ ncli cluster get-remote-support-statusTo start itnutanix@cvm$ ncli cluster start-remote-supportTo close itnutanix@cvm$ ncli cluster stop-remote-support For troubleshooting instructions, please refer to public nutanix KB titled: “Nutanix remote Support Channel Troubleshooting Guide”.

3 years ago

MutahirNutanix Employee

posted in How It works

Hardware Compatibility with AOS & Hypervisors

In order to check Nutanix AOS, AHV or 3rd Party Hypervisor Compatibility with certified hardware, you can visit the Nutanix portal and select "Compatibility Matrix". Home > Documentation > Compatibility MatrixYou can check compatibility for:Hardware model, for e.g. NX, HPE, Dell, Cisco UCS AOS Version Hypervisor Version (AHV, ESXi, Hyper-V, XEN)You can filter by hardware model, AOS version or Hypervisor Version.Visit Compatibility Matrix (Nutanix portal account required) to check for hardware compatibility with AOS and Hypervisors (AHV / ESXi / Hyper-V / XEN).From the same page, you can also check AHV Guest OS compatibility as well.

3 years ago

guifAdventurer

asked in How It works

Albert MendozaNutanix Employee

posted in How It works

New KB Articles Published on Week Ending November 2, 2019

Below are new knowledge base articles published on the week of October 27-November 2, 2019.KB 7837 - How to update expired licenses KB 8266 - Alert - A1037 - Node Forwarding Metadata Requests KB 8275 - Alert - A130161 - Protection Rule Conflict Occurred KB 8369 - AHV: Create Tenable Core with Nessus VM from OVA KB 8388 - Expected Inputs for Alerts Notify Creation on API v3 KB 8393 - CVM inaccessible via SSH after removing node or destroying cluster KB 8434 - Host Kernel panic due to BIOS setting change (CPU Configuration settings) KB 8439 - LSI Firmware Upgrade for Hyper-V 2012R2 KB 8441 - Snapshot Chain Height has exceeded the threshold limit KB 8445 - AHV: Ubuntu Cloud Image VM creation KB 8446 - Portable Foundation Failing "ERROR Exception in <ImagingStepInitIPMI(<NodeConfig(x.x.x.x) @af70>)" KB 8453 - Alert - A1044 - DiskBad KB 8454 - High utilization noticed on CVM loopback interface KB 8459 - [Karbon] Password with $ symbol breaks K8s cluster deployment KB 8460 - Alert-

3 years ago

darshan.patelTrailblazer

asked in How It works

Why the 'Guest OS' field in nutanix vm is NULL?

When I pull the VM details using powershell, the Guest OS for all of my VM is empty. I am using the correct syntax '$vm.guestOperatingSystem' to pull the information. All the other information like VMName, Container, PowerState, NetworkAdapters, etc... are coming except Guest OS and Description of VM. Even if I create a new Windows Server 2012 R2 VM, the Guest OS field shows nothing for new VM as well. I have 47 VMs currently on a Nutanix host but the Guest OS information is empty for all of them. Please let me know if anyone else is having this issue and how to resolve it. Details: ---------------------- Hypervisor: AHV

3 years ago

Albert MendozaNutanix Employee

posted in How It works

Where is my VirtIO ISO file in container?

Hey guys,I have uploaded some of ISO and disk image files including VirtIO to container via Prism Central and they all are marked as ACTIVE means that the upload process has completed successfully.But when I looked into the container to find the uploaded files via command line or WinSCP, all of them are being kept in container except for VirtIO iso file. Do you know how I can find it? Thanks and Regards.

3 years ago

EH_GIP_SYSTEMSVoyager

asked in How It works

Nutanix cluster move and CVM IP change

Hello,We plan to move some nutanix cluster to a new location and we already know that it will not be possible to keep the network vlan and IP setup for the installation.We found the document on how to change the CVM IP and you first advice is to keep the initial network if possible.So we should understood what are the argument pro and against regarding the IP reconfiguration process, can we have some performance issue?In some case we want to keep the data on the cluster and other don't take care of them. So what are the best choice to manage this different move.And if some of yours have already perform this kind of operation, could you share your feedback or advice on that.Thanks for your answers.Regards.David ALEXANDRE.

3 years ago

MutahirNutanix Employee

posted in How It works

Power Supply Alerts - AHV | ESXi

Sometimes, NCC (Nutanix Cluster Check) will alert for PSU down and a case is automatically created when a PSU down is detected.This can be a false positive alert or are transient errors (when relocating a node or some maintenance which requires a PSU down).However, a Power supply alert should never be taken lightly. One can always verify the physical status of Power supply by checking the LED indicators on the PSU unit itself, but in certain cases this may not be possible right away - due to the equipment location etc. To ensure Power Supplies of a Block or Node are in optimal state, you can login to the physical host or execute a command from the CVM to check their status:From a AHV Host:[root@AHV-HOST~]# ipmitool sdr | grep -i psPS1 Status | 0x01 | okPS2 Status | 0x01 | okFrom a CVM on AHV (this will query all HOSTS in the cluster):nutanix@cvm$ hostssh "ipmitool sdr | grep -i ps"From a CVM on a ESXi Host:You can query all hosts PSU status:nutani

3 years ago

MutahirNutanix Employee

posted in How It works

Keeping the Lights Green - NCC - Hardware Checks

Nutanix offers a monitoring & alerting utility, NCC - Nutanix Cluster check, which comes pre-installed on every CVM.Nutanix Cluster Check is a powerful framework which includes several plugins to monitor & alert on different hardware and software components. It is installed on every CVM across a single cluster on all nodes.It comes with almost all Nutanix products, such as Prism Central, Files etc. NCC will include the relevant checks for these products, enabling Nutanix administrators to keep on top of any software, configuration issues. Following are some of the important Hardware (Physical Components) checks and alerting offered byNCC:a) Periodic Disk checksb) Periodic BIOS / BMC Firmware checks (Versions / Upgrades required)c) Boot Devices Monitoring (Sata DOM or M.2)d) SSD and HDD wear and tear checkse) BIOS, BMC checks to ensure all hardware components are current and stablef) Network Interface card checksg) IPMI / Out of band management interface checksh) Power Supply

3 years ago

RanjbAdventurer

asked in How It works

Create local user accounts for files SMB share

Hi We currently use Files and I have created an SMB share. The share is setup to store disaster recovery information in the event a production failure. We use Data protection to replicate the share to another Nutanix cluster at another site.We want the ability to access this share in the event that our Active Directory isn’t available. I was looking for a location either in PE or PC where I could create local accounts and assign them as a user to this share but have been unable to find.Is this possible to do? Thanks

3 years ago

Albert MendozaNutanix Employee

posted in How It works

New KB Articles Published on Week Ending October 26, 2019

Below are new knowledge base articles published on the week of October 20-26, 2019.KB 4639 - How to place CVM and Host in maintenance mode KB 8232 - Network Segmentation with isolated physical NIC KB 8285 - Alert - A130152 - Two Node Cluster changed state to stand-alone mode KB 8308 - Cluster expansion with Network Segmentation KB 8370 - Determining expected bandwidth for Pulse data KB 8376 - [Karbon] Node image upgrade stalls at 5% when an HTTP proxy is configured on Prism Element KB 8380 - Remote Site Connectivity Test - Test Connection Feature in PRISM KB 8386 - NCC check failure with "ERR : Failed to fetch NIC list on X.X.X.X for 00:0c:29:b2:a3:20" KB 8399 - SSR volume detach may issue the Windows event log "Error code: 0xc000009d" if FSRM quota is enabled KB 8400 - Interpreting advertised capacity configuration and logical usages of Storage Containers KB 8401 - Manage IPMI Configuration > Alerts through SMCIPMITOOL KB 8403 - Alert - A130108 - Cloud remote site failed to start K

3 years ago

HITESH0801Nutanix Employee

posted in How It works

Number of Files in your NFS Datastore

Let’s say you’re running a Nutanix cluster with ESXi as a hypervisor and noticing a lot of files in your datastore and different service crashing.You’re running a VDI workload and number of files in the datastore is exceeding 30,000 and the vpxa service is crashing. This can be critical for your infrastructure as vpxa is responsible for communication between the ESXi host and the VirtualCenter Server. Does Nutanix give you a warning before the file limit is reached?Absolutely yes!The NCC health check nfs_file_count_check verifies if an NFS datastore has more than 20,000 files.Want to run the check individually? Login from any CVM and try running the following command: nutanix@cvm$ ncc health_checks hypervisor_checks nfs_file_count_check Nutanix recommends that the number of files in any datastore should be less than 20,000 if vpxa instability issues occur.Want to manually check the number of files in any datastore?Try running the following command from an ESXi host shellfind /vmfs/vol

3 years ago

sbarabNutanix Employee

posted in How It works

Duplicate user VM ip addresses in Prism

If you are running AOS 5.10 or later, you may notice some user VM in Prism show two IP addresses. This could happen if the VM releases its older IP address and acquire a new one. You will see both old and new IP addresses in Prism for this VM, even if VM uses a temporary IP address like APIPA addresses (APIPA addresses fall into 169.254.1.0 - 169.254.254.255 range and use 255.255.0.0 netmask)This is by design and should nto last more than 10 minutes as we scan the arp cache every 10 minutes as we scan the ARP cache every 10 minutes to detect duplicate entries, and remove all entries corresponding to an IP address except for the most recent one. Tis has been explained in your nutanix portal kb 7652.

3 years ago

etr.ericAdventurer

asked in How It works

Move API 3.3 - Create migration plan from ESX to AHV

Just curious if there is going to be an update to the Move API documentation to explain how we can create a migration plan from ESX to AHV. Currently the only example shown is for AWS to AHV and when we try to substitute that payload with values from ESX it fails. Create plan example is here:http://{{ move-ip-address }}:8082/#/v2api/plans/createplan We’ve tried using this same template to create a plan for ESX, but it seems to choke on the network identification section with a return code of {'ApiVersion': '2.0.0', 'Code': 20512, 'Message': "Invalid Network Mapping for VM 'NX-TEST'. Ensure sufficient user permissions on source environment to fetch network information.", 'State': 'Error'}(we have validate permissions) This appears to be the part of the payload that it doesn’t like:From the AWS example: "Networks": [ { "SourceID": "vpc-8e1c3de7", "TargetUUID": "343eaa8f-a251-4ec0-8ede-729c97f7cddc" } We’ve substituted these AWS specific

3 years ago

sbarabNutanix Employee

posted in How It works

CVM memory usage alarm in vCenter

You might have noticed vCenter alarms regarding CVM memory usage being high, and when you look at Prism console for the CVM, you will see it reports 100% but no prism alert will has posed up.This is a known visual artifact with passthrough VMs that could be bypassed by creating a customize alarm in vCetner for VM memory usage and apply it to all other VMs or to the folders containing the VMs. Disabling the builtin vCenter alarms in conjunction with enabling this customized alarm can by pass the alarm reported for VCM while continue reporting any VM high memory usage. For better understanding of this issue and its by pass please review the KB 4465 in your nutanix portal.

3 years ago

perkinsaNutanix Employee

posted in How It works

How to correct your Cluster Health Checks

What is the color of your Cluster Health Heart? We use the following stoplight style color code to report the quick view of the cluster health, in the form of a color coded heart. Cluster Healthy Cluster has at least one Warning Alert Cluster has at least one Critical Alert To view the specific alert(s), on the Health Dashboard click on any of the selections from the Home Dashboard, or click on the Heart directly to be taken to the Health Dashboard overview. Selection Options:Remote Sites Hosts Services Protection Domains …Once you have selected a specific Alert to review, you will have several options for the Alert.Run Check Turn Check Off Alert Policy ScheduleMake a note of the Alert name, and locate the Alert ID by searching for the Alert name in the Cluster Settings, Alert Policies view. False Positive Alerts Occasionally there will be an alert that will inaccurately show a warning or failure. When this occurs there are a few options to correct

3 years ago

ITNINJAVoyager

asked in How It works

Changing Project with powershell

Hi guys, I'm somewhat new to Nutanix and I was curious if there was a powershell command that will allow you to set the project for a VM. Essentially I want to use scripts to deploy VM's and then when the VM is deployed move it into a project so we can track resources. The deployment part of this is easy enough, but nothing in powershell seems to indicate it can even do this. Is this something that can even be done? I really like the powershell integration, and I really like the SSP Prism Central and Projects. I'd really really like to be able to use both of these together. Thanks

3 years ago

sbarabNutanix Employee

posted in How It works

Remote syslog server and alerts

If you already have a functioning “Syslog Server” and you would like to forward cluster logs to it, you can follow instructions in:“https://portal.nutanix.com/#/page/docs/details?targetId=Advanced-Admin-AOS-v511:set-rsyslog-config-c.html”However, presently (as of fall of 2019) the activity entities like Alerts/Events/Audits in prism central cannot be redirected to remote syslog servers. This can be changed in future releases of PC and AOS will be reflected in Release notes.

3 years ago

HITESH0801Nutanix Employee

posted in How It works

vCPU and cores per CPU boggling your mind?

Let’s say you have Nutanix cluster with 24 CPU cores and 2 sockets and now you’re confused regarding the terminology. vCPU and cores per CPU and how to provision CPU to a Virtual Machine confusing you? Let’s break the terminology down in simple terms!In the world of Hardware, we have sockets and cores. In a host, there would be 2 sockets(or CPU) and 12 cores in each socket, resulting in 24 cores.So what is a vCPU?vCPU corresponds to the number of sockets for the VM. Cores per vCPU correspond to cores in a socket, so in conclusion, if you have provisioned your VM with the following configuration:2 vCPU 4 core per vCPUIn this scenario, your VM would have 2 sockets and 8 cores in total.How can I provision my vCPU, is there a guide or documentation regarding it?Absolutely yes, please give the following article a readCPU Configuration So is there a way to overprovision my CPU?Absolutely yes, please give the following article a readCPU Oversubscription

3 years ago

SankarArumugamVoyager

asked in How It works

How to destroy a Multi node cluster?

"cluster -f destroy" does not help. This is a new cluster, but during one click ESXi upgrade, tasks for stuck and now nothing can happen. I am fed up with tasks getting stuck and not completing, I would like to destroy the cluster and individually update ESXi on each node. We are runing XC740xd-12

3 years ago

AlonaNutanix Employee

posted in How It works

Curator scans types and frequency or where is our free space?

When expecting to witness changes in storage utilisation performance, increase in free space in particular, please be aware that the change may not take effect immediately.There are two main types of Curator scans:Scheduled Scans Curator Full Scan — in 6 hrs after the last Full Scan Curator Partial Scan — in 1 hour after the last Partial Scan. Triggered Scans — as a response to a situation in the cluster where Curator is urgently required.For more information:KB-2101, KB-2924.Posts here in NEXT community curator task type list or a search.Nutanix University video on Curator.Nutanix Bible on monitoring Curator tasks Application Mobility Fabric (AMF)

3 years ago

AlonaNutanix Employee

posted in How It works

Changed your mind? — No problem! How to disable Erasure Coding (EC-X).

Suppose you have Erasure Coding (EC-X) enabled on all of your containers. Over time you find that workload structure and type has changed and is no longer suitable for EC-X. What do you do?Since migrating VMs between containers is a disruptive task alternative approach would be to disable EC-X on a container.In preparation for the task there are a couple of factors we recommend are taken into consideration:There will be increased I/O at the storage layer. Once EC-X is disabled on a container additional data will be written to the container and replicated. The influx of the data can be estimated by reversing EC-X gains. Expect temporary increase of storage utilisation in addition to calculations above. Parity data will not be removed immediately. Parity data size can be reverse calculated based on the same EC-X gains estimates. There are no guardrails in terms of storage utilisation once EC-X is disabled. Please make sure there is sufficient space for the decoded data to be written —

3 years ago

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How It works

Top KB Articles for October 2022

New KB Articles Published on Week Ending October 29, 2022

Help us help you! Assign Support Contact to your Nutanix assets.

1207 Topics

Opening "Remote Support" channel and troubleshooting for it

Hardware Compatibility with AOS & Hypervisors

Failed SATADOM

How to get VM/Host/Cluster/etc. statistics from API in bulk?

Nutanix Sizer - downstroking?

New KB Articles Published on Week Ending November 2, 2019

Why the 'Guest OS' field in nutanix vm is NULL?

Top KB Articles for October 2019

Where is my VirtIO ISO file in container?

Nutanix cluster move and CVM IP change

Power Supply Alerts - AHV | ESXi

Keeping the Lights Green - NCC - Hardware Checks

Create local user accounts for files SMB share

New KB Articles Published on Week Ending October 26, 2019

Number of Files in your NFS Datastore

Duplicate user VM ip addresses in Prism

Move API 3.3 - Create migration plan from ESX to AHV

CVM memory usage alarm in vCenter

How to correct your Cluster Health Checks

Changing Project with powershell

Remote syslog server and alerts

vCPU and cores per CPU boggling your mind?

How to destroy a Multi node cluster?

Curator scans types and frequency or where is our free space?

Changed your mind? — No problem! How to disable Erasure Coding (EC-X).

Badges