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How It works

Have questions about how the Nutanix Platform works? Looking to get started - start here!

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Albert Mendoza

started this topic

New KB Articles Published on Week Ending March 9, 2024

Below are new knowledge base articles published on the week of March 3-9, 2024.KB 16144 - Nutanix Files - "Server has no Shares" error in PC...

Albert Mendoza

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...

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HITESH0801Nutanix Employee

posted in How It works

Confused regarding vNic and Physical Nic and their capabilities?

Let's say that you have 25 Gbps SFP+ Network card in your host and have created a Windows Virtual Machine with a 1 Gbps Nic card and now confused regarding the bandwidth for the virtual machine and how the Virtual Nic of the VM is different than the Host Nic when it comes to bandwidth and functionality. vNic is the software NIC emulation in the VM and is just a driver and in latest VMs the NIC is para-virtualised, which means that the NIC and Operating System is aware of the Host Physical NIC capability and understands that the vNic is just a driver. So what basically is this driver supposed to do? The vNic driver is really an API between the guest and the hypervisor so the vNic bandwidth is totally disconnected from any physical hardware. So what is the Physical NIC card then? Physical Nic is the physical network adapter connected to your physical switch and is responsible for the transfer of packets in your environment. So how Para virtualised vNic is better, does it have any advanta

27960

5 years ago

AlonaNutanix Employee

posted in How It works

Encryption domains and levels - Data-at-Rest Encryption feature - no more confusion

What can be encrypted? What configuration is supported? At which layer the data is encrypted? Which layer encryption is more secure?Nutanix offers three options of data encryption:Data-at-Rest Encryption - Self Encrypted Drives (SEDs) - cluster's native or external KMS for software-only encryption. If the Controller VM cannot get the correct keys from the key management server (KMS), it cannot access data on the drives. If a drive is re-seated, it becomes locked. If a drive is stolen, the data is inaccessible without the KEK (key-encrypting-key) (which cannot be obtained from the drive). If a node is stolen, the key management server can revoke the node certificates to ensure they cannot be used to access data on any of the drives. Data-at-Rest Encryption - Software Only For AHV, the data can be encrypted on a cluster level. This is applicable to an empty cluster or a cluster with existing data. For ESXi and Hyper-V, the data can be encrypted on a cluster or container level. The c

27960

5 years ago

AlonaNutanix Employee

posted in How It works

There is no such thing as too many layers of security - Nutanix network ports

Looking to strengthen security of your HCL cluster? Consider keeping only necessary ports open. Following is the list of firewall ports that must be kept open to successfully access the Nutanix cluster. Prism web console: 9440, 80 SSH to both CVM and Hypervisor: 22 Cluster remote support: 80, 8443 vCenter remote console: 443, 902, 903 from both the user host and vCenter vCenter from Prism web console: 443, 80 Citrix MCS: virtual IP, Port 9440 (TCP) Xtract for VMs (Move): ESXi hosts (TCP 443, 902); AHV (TCP and UDP 2049, 111) Following is the list of ports that must be kept open for the 1-Click upgrade. *.compute-*.amazonaws.com:80,443 release-api.nutanix.com:80 ntnx-portal.s3.amazonaws.com and s3*.amazonaws.com Information above is extracted from KB-1478 which also explains what to do when configuring the entire range of IP address for AWS is not acceptable and using FQDN wildcards is not an option supported by the firewall the environment. KB-1202 Lists port number

22232

5 years ago

Albert MendozaNutanix Employee

posted in How It works

Nutanix Customer Support Services

Nutanix provides customer support services in several ways:The Pulse feature sends diagnostic data from customer clusters to Nutanix Support on a regular schedule. This enables Nutanix to deliver proactive, context-aware support to customers, monitor customer clusters and provide assistance when, or even before, a problem occurs. This data collection is anonymized, securely transmitted, has no effect on system performance and only basic system-level data needed to monitor the health and status of the cluster are collected. The Pulse framework also allows Nutanix Support Engineers to remotely collect logs from customer clusters on demand with customer approval but without needing assistance from the customer. This saves time in the data gathering stage of the troubleshooting process. Instead of asking the customer to run commands and send the output, which could go back and forth several times, the Support Engineers can just collect the logs themselves via the connection provided by Pul

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5 years ago

JaniKVoyager

asked in How It works

Entity CAS version mismatch when "Invoke-WebRequest" - Vms

We have below script which is changing VM's project from default to some other project but after we execute invoke-webrequest, we notice that it will change Vm's "spec_version" to different number than it's in out $body variable. That's the reason why invoke-webrequest is given below error. Just before we run invoke-webrequest, we checked that vm's configuration metadata "spec_version" is same than in $body that we are trying invoke. So it seems that invoke-webrequest is somehow first changing the vm's spec_version in vm's configuration data (in our case to 18) and after that trying to invoke spec_version = 16 on top of that. But because the version should be same, it's failing. Same error occured when you are trying the same in REST Explorer - "vms". SCRIPT: Import-Module d:\temp\PSNutanixPrismCentral.psm1 Invoke-NutanixPrismCentralLogin -Username "username@xxx.local" -Uri "https://prismcentral.xxxx.local:9440" # Get non default projects $Projects = Get-NutanixPrismCentralProje

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5 years ago

HITESH0801Nutanix Employee

posted in How It works

Confused regarding RF-2 and RF-3, and which one is suitable for your cluster?

If you have a 3 node cluster and your data resiliency is okay, you can handle a failure of 1 node, this is termed as FT-1 (Fault Tolerance), or alternatively RF-2. RF-2 is Redundancy Factor - 2, which states that all data in your NX environment has another copy distributed in your cluster, which makes it possible for the cluster to sustain a single component failure and is the default fault tolerance configuration for your cluster. What if you're handling a larger cluster and your workload is extremely critical? Redundancy factor 3 is a configurable option that allows a Nutanix cluster to withstand the simultaneous failure of two components by saving 2 copies of all your data in two different nodes in your NX environment. The requirements for RF-3 are as follows- Minimum number of Nodes in your environment should be 5 and the storage containers should be RF-3. Want to know more about how RF-3 works? Redundancy Factor 3 So what if you created a storage container with RF-2 and

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5 years ago

Albert MendozaNutanix Employee

posted in How It works

New KB Articles Published on Week Ending October 12, 2019

Below are new knowledge base articles published on the week of October 6-12, 2019. KB 8046 - Set Up Frame Admin user with Domain Joined Instances KB 8076 - Sysprep fails on Windows 10 due to AppX packages not being installed for all users KB 8098 - Renewal of licenses/Buying new licenses KB 8101 - Licensing Steps to License Capacity Based Starter License KB 8149 - NCC Health Check: check_dvs_esxi_version_compatibilty KB 8151 - Saml authentication using ADFS unable to login KB 8229 - Alert Email Digest gets delayed within 30 minutes in AOS 5.10.5 or later KB 8237 - Kubernetes Dashboard deployment fails due to incompatible version with Kubernetes cluster. KB 8249 - LCM Pre-check : test_node_uuid_validity KB 8282 - Poor thread load balancing within RHEL/CentOS guests constraints guest IO performance KB 8304 - Era Server displays incorrect time after reboot KB 8312 - VMs not getting IP address from IPAM KB 8313 - AHV | Kernel debugging of Windows VM via network (KDNET) KB 83

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5 years ago

AlonaNutanix Employee

posted in How It works

Memory reserved calculation imrovement - AOS 5.1.5 and above

Prior to AOS version 5.1.2 memory_reserved had not been populated at the time of VM creation. Once the VM was powered on the memory_reserved field was populated and the value remained persistent even when the VM was powered off. The issue was fixed in version 5.1.5 and 5.5 and above. It is important to remember that there is no over-provisioning of memory in AHV. The "total provisioned memory" amounts to all the memory configured on all VMs regardless of power state. The "total reserved memory" is memory configured to all Powered on VMs only.

7760

5 years ago

Ha NguyenVoyager

asked in How It works

Nutanix Collector on Windows

Hi, We have several Hyper-V servers. We intend to implement Nutanix to replace those Hyper-V servers. We have been given Nutanix Collector win32 v2 to run collecting the information of the Hyper-V servers to estimate what Nutanix to buy. However, I don't know how to run it. Has any one run this before ? Is there any guide document ? Thank you very much for your help.

28852

5 years ago

AlonaNutanix Employee

posted in How It works

Firmware upgrade before breakfast - Life Cycle Manager (LCM)

Once you complete firmware upgrade start prepping for another one. Eternal compatibility matrix checks, arguments with vendors on a version that is supported by both compute and hypervisor, forgetting to include plugins into upgrade and the list just goes on and on. Sounds familiar? There is a way out. Developed as the second generation of one-click upgrade LCM simplifies this problem for Nutanix environments. LCM provides a single process in Prism that identifies and qualifies upgrade paths against tested and validated versions, then uses a nondisruptive one-click process to complete the upgrade. LCM can perform firmware upgrades on the following server platforms: Nutanix NX appliances. Dell XC and XC Core appliances. Lenovo HX and HX Core appliances. When you upgrade firmware, we recommend that you use the latest versions of AOS, Foundation, and LCM. Quick snapshot of LCM workflow: Interested? Start with LCM glossary. Coffee read on LCM: Nutanix Upgrades: Life Cycle Manager

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5 years ago

sbarabNutanix Employee

posted in How It works

Cluster Maintenance or Relocation

Occasionally you need to temporarily power off your cluster hardware for maintenance, relocation or any other necessary task. To do this you will need to stop your cluster and then start it back after the required task was done. But you will need to perform the following tasks before and after the cluster stop/start commands: 1- Disable any “Protection Domains” in the cluster and make sure there is no ongoing replication occurring. 2- Make sure no “Fail” message appears when performing the ncc health check on the cluster 3- Power off all the Vms running in the cluster 4- Stop “Files” (previously AFS) if you are using it in the cluster 5- Run "cluster stop" command 6- power off all CVM 7- Put all hypervisors in maintenance mode 8- Power off the hardware After the maintenance and powering on the hardware, you will need to undo the above steps. Put nodes out of maintenance mode and make sure all Cvm are powered on, to run the command “cluster start”; you could then go ahead with st

16911

5 years ago

user_vmVoyager

asked in How It works

vMotion in case of resource contention

Hello I'm new to Nutanix and setting up a small 3 node cluster with ESXi. Just wanted to know whether there is any automatic migration from Nutanix side in case of resource contention on 1 node. One such example: if there are too many VM hosted on a single node and causing storage contention, is there any option on Nutanix to automatically migrate some VM to other nodes (similar to what VMware DRS does - but this time, for storage) Thanks

13966

5 years ago

egillonWayfarer

posted in How It works

Nutanix Files Shares

I'm curious to find out how folks have been implementing departmental shared folders in nutanix files. We are currently running SMB files from a NetApp filer which has the ability to setup Qtrees/quotas for subfolders of the top level share. Is this possible in nutanix files as I'm not seeing anything in the documentation around it.

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5 years ago

sbarabNutanix Employee

posted in How It works

Setting EVC on a vSphere cluster

if you are trying to set “Enhanced vMotion capabilities” (EVC) on a running cluster, you may see a pop up Error Window saying: “… Powered-on or suspended Virtual machines on the host may be using cpu feature hidden by that mode” You can create a new cluster in vSphere and set the EVC on it first with no hypervisor, and then move the nodes and Vms from the old cluster to the new cluster. Please follow the link “Unable to Set Enhanced vMotion Capability (EVC) on a Newly-created Cluster” for detailed instructions.

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5 years ago

11441Pathfinder

asked in How It works

3000 vs 8000 Series

Hello, What are the pros and cons of these two series? What workloads are better suited to which series? Why would you choose an 8k block over a 3k block and conversely? Thanks

8481

5 years ago

Albert MendozaNutanix Employee

posted in How It works

New KB Articles Published on Week Ending October 5, 2019

Below are new knowledge base articles published on the week of September 29-October 5, 2019. KB 7668 - FAIL: Unable to get Kerberos Key Distribution Center IP'susing DNS resolution. Check Name Server configuration on this cluster. KB 8044 - How to enable Windows Search on Windows Server 2016 KB 8156 - Alert - A1195 - Cluster in Read-Only Mode KB 8182 - NCC INFO Message: Unable to fetch PSU type info of block for known reasons KB 8216 - Changing Data Services IP Address KB 8258 - Alert - A130207 - Failed Hosting Network Segmented VIP KB 8274 - Alert - A130173 - Unable to get Availability Zone Endpoint KB 8276 - Alert - A300408 - Recovery Plan Validation Failed With Errors KB 8277 - Alert - A300422 - Recovery Plan Execution Failure due to Validation Errors KB 8278 - Alert - A300401 - Recovery Plan Execution Failure KB 8281 - Alert - A130158 - VM Protection Failed Note: You may need to log in to the Support Portal to view some of these articles.

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5 years ago

Albert MendozaNutanix Employee

posted in How It works

Top KB Articles for September 2019

Below are the top knowledge base articles for the month of September 2019. KB 4141 - Alert - PowerSupplyDown KB 1540 - What to do when /home partition or /home/nutanix directory is full KB 4519 - NCC Health Check: check_ntp KB 4409 - LCM: (LifeCycle Manager) Troubleshooting Guide KB 4188 - Alert - IPMIError KB 2090 - AHV | Host and Guest Networking KB 4158 - Alert - PhysicalDiskBad KB 3523 - How to create a Phoenix ISO or AHV ISO from a CVM or Foundation VM KB 7077 - Alert - CassandraSSTableHealth KB 2608 - Cluster Health Checks Incorrectly Show Warnings and Failures KB 7503 - G6, G7 platforms with BIOS 41.002 -DIMM Error handling and replacement policy KB 1863 - NCC Health Check: sufficient_disk_space_check KB 3357 - NCC Health Check: ipmi_sel_cecc_check KB 4273 - NCC Health Check: aged_third_party_backup_snapshot_check KB 6937 - Firmware Binary Links for Host Boot device(SATADOM/M.2), HBA(LSI 3008) & SATA Drive devices KB 5731 - NCC - ERR: Identified as CPU inten

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5 years ago

Albert MendozaNutanix Employee

posted in How It works

New KB Articles Published on Week Ending September 28, 2019

Below are new knowledge base articles published on the week of September 22-28, 2019. KB 8052 - Nutanix Files - Performance for clients going over WAN KB 8174 - Foundation stalls on NX-1175S-G6 platform KB 8194 - AHV | "Size should be greater than 0 and less than or equal to 8589934591 GiB" error shown when trying to insert ISO into CDROM KB 8199 - Alert - A1145 - RestartVMsFailure - Failure To Restart VMs For HA Event KB 8201 - Kubernetes Cluster deployed by Karbon with Proxy transitions to a CRITICAL state when proxy is decommissioned. KB 8208 - Alert - A130107 - Recovered VM Disk Configuration Update Failed KB 8231 - CVM Reboot (and several other) SNMP traps not generated KB 8234 - Error when trying to delete an AHV network that has associated NIC KB 8252 - Alert - A200801 - Availability Zone Connection Failure KB 8253 - Alert - A200704 - Xi Payment Missed KB 8254 - Alert - A200703 - Xi Payment Missed KB 8255 - Alert - A200702 - Xi Subscription Expired KB 8257 - NCC ER

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5 years ago

JSmisek

asked in How It works

Assistance using Powershell to retrieve last snapshot time stamp

This is my first script using the Nutanix provided Powershell cmdlets. Everything has been pretty straight forward so far. But i'm having one problem, i think someone will probably know off hand. I'm building a report. In this report it should have next snapshot time for protection domain (Easy enough). But also last snapshot created time (haven't found it yet). Anyone will ing to assist? I'll show the two object types i'm building already in the script. Basically PD's and Cron schedules. code:$pd = Get-NTNXProtectionDomain | where {$_.Active -eq $True}#Showing basically how the loop is setupforeach($p in $pd){$e = (Get-NTNXProtectionDomainCronSchedule -PDName $p.Name).userStartTimeInUsecs#showing how my custom object is built$dpcust = @{ ProtectionDomain = $p.Name VMName = $p.vms.VMName -join "," NextSnapshot = $scheduledtime Usage = $convertUsage Schedule = $p.cronschedules.Type LocalRetention = $p.cronschedules.retentionpolicy.localmaxsnapshots -join ","

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5 years ago

bbeavisAdventurer

asked in How It works

Trying to produce Projects and Roles report

So I can use prism central to go into each project and get the access control list, which is group and role. I am unable to decipher the API to produce a comprehensive list of Projects with the associated Group with Role. Does anyone know the link between these sets of data? I can get individual lists. The Access_Control_Policy does not have the correct information. I have a particular role that does not show up in a dump of the acp list or details. I've looked by uuid and name. Thanks, Bill

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5 years ago

quentinbadoudVoyager

asked in How It works

API update VM categorie. "Cannot clear previously set time zone"

Hi, I want to set a VM to a categorie, using the REST API. However I Get the message INVALID_REQUEST code:"Cannot clear previously set time zone Don't know what to do with this. Please note that I had to add the "power_state", because if I don't I get an INVALID_REQUEST code: "VM power state must be specified for Update operation." Which I dont understand, as API documentation said power_state is optional. Endpoint used: PUT /vms/{uuid} Body: code:{ "spec": { "name": "BACHELOR2018", "resources": { "power_state": "ON" } }, "api_version": "3.1", "metadata": { "kind": "vm", "spec_version": 3, "categories": { "SLA": "A3" } }} Response body: code:{ "api_version": "3.1", "code": 422, "message_list": [ { "message": "Cannot clear previously set time zone", "reason": "INVALID_REQUEST" } ], "state": "ERROR"}

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5 years ago

Albert MendozaNutanix Employee

posted in How It works

New KB Articles Published on Week Ending September 21, 2019

Below are new knowledge base articles published on the week of September 15-21, 2019. KB 7966 - LCM Pre-check : test_esxi_scratch_space KB 8031 - Alert A1103 - Physical Disk Removed From Slot KB 8047 - Error when adding roles and features KB 8127 - Changing IP address of DB Server in Era KB 8160 - Secure Boot/UEFI with Nutanix KB 8169 - IKVM console error server disconnected code 1006 KB 8173 - LCM: GUI displays "No data found" after successful Inventory operation KB 8178 - BEAM GOVCLOUD FAQs KB 8191 - This cluster has multiple licensing violations KB 8211 - Removing Unreachable DB servers from Era KB 8212 - ESXi-6.5U3 - Updated iso_whitelist Note: You may need to log in to the Support Portal to view some of these articles.

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5 years ago

galad2003Adventurer

asked in How It works

How to Run Execuatble Script from Desktop

Hi. I am fairly new to scripting especially with Nutanix. I can do Powershell scripting just fine but making the conversion to shell scripts has my brain in a knot. I have some acli commands to create a new vm, create a new Disk and a new NIC but I was unsure how to run them as an executable from my Windows desktop. Our cluster is Nutanix AHV. So I run this from a command line to open putty and connect. It works fine without the script. putty.exe -ssh admin@xxx.xxx.xxx.xxx -pw ****** -m "C:\newVM.sh" The script is: acli; #creates a clone of Server2016 #vm.clone aTest clone_from_vm="Server2016RefImage" memory=8G num_cores_per_vcpu=2 num_vcpus=2; #creates a D drive # vm.disk_create aTest bus=scsi create_size=200G index=1 container="Container-1"; #Add a NIC #vm.nic_create aTest connected=true network="Vlan6"; Each line will run fine if I run it in putty but I am not sure if I am stringing the commands together correctly. If I try to execute the script it opens the putty session the

18614

5 years ago

alucianiChevalier

posted in How It works

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How It works

New KB Articles Published on Week Ending March 9, 2024

Top KB Articles for February 2024

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