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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
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Albert Mendoza
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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...
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Albert Mendoza
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Albert Mendoza
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Top KB Articles for February 2024

Below are the top knowledge base articles for the month of February 2024.KB 6082 - inode_usage_check fails due to large amount of email file...
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Alona
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Alona
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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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1405 Topics
M
mcguppyAdventurer
asked in How It works
Data Resiliency Status critical - what happens when another node goes down?

Hi all. I have read the document about the different failure scenarios. For me it is still not clear, what really happens, if the data resiliency status is still critical and another node fails. In the doc I read this: With two sets of physical disks that are inaccessible, there would be a chance that some VM data extents are missing completely. In our starting time when using Nutanix (version 3.x) I remember our Nutanix partner was telling me, in such a case the cluster stops to make sure data keeps consistent. Do I have some UVMs that are not working any more correctly or is cluster stopping and all UVMs are stopped? Thank you very much. Kind regards, Stefan

5
J
5 years ago
M
Nutanix Employee
Manuel-RHNutanix Employee
asked in How It works
Getting Cluster Health Status from PE

Hi, I've been trying to get access to PE Health Status (e.g. Failed, Warning, etc) via CmdLets or REST API with no much luck. Any ideas? Cheers, Manuel

2
dlira
5 years ago
M
MallikarjunaAdventurer
asked in How It works
How to get Data Resiliency status using Rest api version v2.0

Hi, I am not able to get Data Resiliency status using Rest api version v2.0. I see for v1 it is [url=https://server_ip:9440/PrismGateway/services/rest/v1/cluster/domain_fault_tolerance_status]https://server_ip:9440/PrismGateway/services/rest/v1/cluster/domain_fault_tolerance_status[/url] Using v1 as well I am not able to get this metrics value. Please help us in getting Data Resiliency status using Rest api version v2.0. Regards, mallikarjuna

4
D
5 years ago
D
devwanglerAdventurer
asked in How It works
Shutdown Grouping of VM's

Hi. We have a large grouping of VM's that are not always required to be running and would like to find a way to shutdown these particular VM's on a sunday night. Now anyone know how to find a group of VM's (either via label, project, category etc) and pass a shutdown command. Ideally I would like to do this via PowerShell but I will take anything.

6
R
5 years ago
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MallikarjunaAdventurer
asked in How It works
v1 /vms missing metrics in v2 apiversion

Hi Team, Previously we are using apiversion v1 and getting metrics using /vms [url=https://hostname4:9440/PrismGateway/services/rest/v1/vms/]https://hostname4:9440/PrismGateway/services/rest/v1/vms/[/url] Now with api version v2 we are not able to get below mentioned metrics [b]hypervisor_cpu_usage_ppm[/b] not able to find this with both urls(vms,virtual disks) [b]hypervisor_memory_usage_ppm[/b] not found [b]memoryCapacityInBytes[/b] not found [b]ipaddresses[/b] not found but found requested_ip_address are both same?? [b]controllerVm[/b] not found Able to get few metrics using virtual_disks and above mentioned metrics we are not able to get, Are these not available in v2 or modified to anyother url. Please let us know how to get these values using v2 apiversion.

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M
5 years ago
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devwanglerAdventurer
asked in How It works
Failing to execute Set-NTNXVMPowerState from PoSH Script - access denied

I've written a PoSH script which does the following. [list=1] [*]Authenticates to Prism Central V3 API [*]Calls /category/query API to get a list of VM uuid's that are members of the PROD category. [*]Write this list of uuid's to a string [*]Connect to the NTNX cluster using Nutanix PowerShell cmdlets. [*]Iterate through the above string and execute Set-NTNXVMPowerState against the uuid's. [/list] Steps 1 - 4 work as expected. Step 5 seems to iterate through the list as it should but when I put in the Set-NTNXVMPowerState command to be executed, it throws an access denied error. Once the script gives the error, the powershell connection looks like it locks the account and you cannot execute any commands. If I comment out the foreach loop, and just execute a normal PoSH cmdlet (after the Connect-NTNXCluster) such as Get-NTNXClusterInfo, it works fine. I have tried both my account (which has Prism admin rights) and the Prism Central admin account with no luck. So 2 q

1
D
5 years ago
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Chandan PathakVoyager
asked in How It works
How failover of VMs would work in case of multiple hypervisor in commercial edition.

In a Nutanix Cluster, if we have three hypervisors (say VMware / Hyper-V / AHV) if the AHV node is down, can the VMs from AHV node failover to Hyper-V or VMware hypervisors available in the same cluster in commercial edition of Nutanix.

2
C
5 years ago
Q
quentinbadoudVoyager
asked in How It works
Find what are the options for a parameter in the API developer Guide

Hi, I have troubles to use Prism API v3 using the reference guide. For exemple I don't see the different possible options for an attribute. I explain myself with a quick example: If I want to create an alert with api using the reference guide below https://developer.nutanix.com/reference/prism_central/v3/api/alerts/postalertsnotify the attribute "notification_type" is required and must be a string. But [b]what kind of value is expected here?[/b] I need to know what are the possible values, and what does mean each value. This is just an example, but it is the same for all other API end point. At this point API becomes a headache for me... Do I miss something here? Thank you for your help

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D
5 years ago
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randyramandaniTrailblazer
asked in How It works
Expand Node Dell XC630 and XC640

Dear all, I have previously asked, but it was wrong forum, i have existing cluster with Dell XC630-10 4 node, and i want to expand capacity in my cluster, but my team can only buy new hardware ( dell XC640 ) cannot buy dell xc630-10 again, can i expand my cluster with different hardware? and please advice about the step to expand my cluster

2
R
5 years ago
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jitendraAdventurer
asked in How It works
intermixing 3 node All Flash NX-3360-G5 & 4 node Hybrid NX-1465-G5

Is it possible to mix, [h3] [/h3][h3][b]3 node [i][u]All Flash[/u][/i] NX-3360-G5[/b] &[/h3][h3][b]4 node [i][u]Hybrid[/u][/i] NX-1465-G5[/b][/h3]and form a AHV cluster ? NX-3360-G5 is 2*10 core CPU, 12*32GB Memory, 18*1.9TB SSD whereas NX-1465-G5 is 2*10 core CPU, 8*32GB Memory, 1*960GB SSD, 2*4TB HDD how storage tearing will work in this scenario ?

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J
5 years ago
B
bohara
asked in How It works
controller vm's

I'm trying to get a better basic understanding with regards to controllers in a VM farm's data path. We are going to be in the process of migrating some of our farm resources to another data center which may include powering down controllers in a rolling fashion. What type of service interruptions would users expect to see?

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RichardsonPorto
Nutanix Employee
5 years ago
X
xiaobaiWayfarer
asked in How It works
This cluster is not registered to any vCenter server. You must register a management server and enable DRS before you can create a VM.

I'm running nutanix 5.5.0.7 with esx ,when i create vmware machine，it's prompts “ This cluster is not registered to any vCenter server. You must register a management server and enable DRS before you can create a VM. ” Is vcenter installed directly on the node node ，then register this vCenter and enable DRS? Thanks in advance,

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RichardsonPorto
Nutanix Employee
5 years ago
M
Maxim GrishinTrailblazer
asked in How It works
Nutanix Cluster API v2 reports normal status when a node is "down"

Yesterday our Nutanix CE cluster suffered a node loss (onboard NIC went offline somehow, investigating), HA failover performed correctly, but I had Zabbix monitoring cluster API 2.0 which did not state there is a problem. The only difference was that the host stopped being visible in the discovery by its proper name and remained only by IP, every other reading were "normal" and "not degraded" and even cluster state was reported "normal" during host effective downtime. WTF?! Also, WTF is with re-posting a question to another forums when asked to? Do you maybe have crosslinks allowed to ask the same question in a different subset of forums?

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M
5 years ago
M
Michelp_bePathfinder
asked in How It works
Create Protection Domain Schedule via API/Python

Hi, I'm trying to create a schedule for an existing Protection Domain like this: [code]def createProtectionDomainSchedule(self,pdname): # Set the schedule for the protection domain try: policy = {"retention_policy": {"remote_retention_type": None, "remote_max_snapshots": {}, "local_retention_period": None, "local_max_snapshots": 1, "remote_retention_period": {}, "local_retention_type": None}, "start_times_in_usecs": [1549477620000000L], "rollup_schedule_uuid": None, "user_start_time_in_usecs": 1549477620000000L, "is_rollup_sched": None, "pd_name": pdname, "values": None, "suspended": False, "app_consistent": False, "end_time_in_usecs": None, "type": "DAILY", "id": "63c037e5-41e4-4630-8641-23509a5360a1gg", "every_nth": 1} protectionDomainURL = self.base_url + "/protection_domains/"+pdname+"/schedules" serverResponse = self.session.post(protectionDomainURL, policy ) print serverResponse.text return json.loads(serverResponse

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Nutanix Employee
5 years ago
R
RevanSimbolonExplorer
asked in How It works
Migration VM From Old Nutanix Cluster To New Nutanix Cluster (AHV)

HI , I have Question, i want to build new cluster Nutanix using Nutniax NX3000 Series G6, Now I have existing Nutanix cluster running with server NX1000 Series G5. I want to Migrate All VM from the existing Nutanix cluster to the New Nutanix Cluster, Is it possible migrate between cluster nutanix? Can you please tell me step-step to migrate?

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RichardsonPorto
Nutanix Employee
5 years ago
F
Funky
asked in How It works
VM operations using vmUUID instead of vmID?

I have a scenario where I only have the vmUUID available to me and the NGT tools aren't currently installed on a VM so it appears to be limiting what I'm able to do with the API. Is there a way to retrieve a VMs vmID using the vmUUID?

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sandeepmp
Nutanix Employee
5 years ago
aluciani
alucianiChevalier
posted in How It works
Does Data Locality Really Matter?

GV Govindasamy (Nutanix Senior Solutions and Performance Engineer ) has written a series of three blog posts on data locality, I thought I would summarize and share them here. Be the first to reply with a question below. [url=http://bit.ly/2UzofWF]Does data locality really matter?[/url] Does data locality matter in HCI Architecture? Data locality is not just about storing new data in local node. It's also about keeping relevant useful data local when needed for low latency access. Read more. [url=http://bit.ly/2DJQyf9]Can data locality help scale throughput?[/url] X-Ray's throughput-scalability-random-reads and throughput-scalability-sequential-reads tests help answer the following: Can IOPS or throughput rate sustain over time? As number of nodes grow in cluster, can throughput or IOPS scale with it? Read more. [url=http://bit.ly/2DL05md]What if Data Locality was not a design choice in Nutanix AOS?[/url] What if data locality was not considered in Nutanix AOS architecture

1
ozzy01
5 years ago
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Jegan SAdventurer
asked in How It works
Windows Virtual Disk locked

I have windows 2012 r2 VM but I forget the windows administrator password. When I'm trying to reset the password from recovery command line using below command. [list=1] [*]X:\sources [*]d: cd windows\system32\ren utilman.exe utilman.exe.old [*]copy windows\system32\cmd.exe utilman.exe. [/list] Usually above command will work for normal physical windows server , ESXi Guest vm's to reset the local administrator password. ** In nutanix recovery command line I am unable to view my actual OS disk. Is there any way, How can i view my guest VM os disk on recovery mode. ?

6
J
5 years ago
aluciani
alucianiChevalier
posted in How It works
Can Two Disks Fail in a Short Interval?

Yes. of course. The real answer lies on how these failures are handled in HCI architectures. What happens to the Data Availability during these failures? The questions arise: [list=1] [*]Does HCI architecture start protecting data as quickly as possible? [*]How smart the architecture is to rebuild the lost data and how long it's going to take? [/list][list] [*]If the rebuild takes longer, this time window is called risky period. Administrator must hope that there is no other failure occurs during this long rebuild window to ensure FTT and RF requirements. [*]Vendors may offer another brute force method of increasing RF / FTT which increases the cost (in the absense of smart architecture). [/list] In this video, I have two disk failures simulated with soft disk pulls on Nutanix AOS. This short video can articulate how fast the AOS gets into action to protect the data from subsequent failures and how fast it completes with its truly distributed architecture by employing all av

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aluciani
5 years ago
P
Paul IlavarasuOutrider
asked in How It works
How Prism Leader election happen ?

Can you please help me with below questions 1.How prism master/Acropolis master will be elected ? is there any criteria to become a leader ?

1
nishantpanchal
5 years ago
M
Muhammad Usman Ayub
asked in How It works
Sizer Extent Store and Actual Container Size

Can anybody confirm if the Extent Store size shown in the Nutanix Sizer tool will be equal to the Container Maximum Capacity that can be used by the VMs for data storage? I am designing a 3-node cluster with following Disks 3 * 960 GB SSD 6 * 4 TB HDD Nutanix Sizer shows Extent Store (Assuming RF2) = 9.63 TiB for HDD and 0.64 TiB for SSD The total shown is 10.27. Will this value be the Maximum Capacity available for the Container to be made out of storage pool? As I have observed the Container Maximum Capacity is exactly half of what the Storage Pool Capacity is shown. What will be the Storage Pool Capacity shown for the above mentioned specs and is this value visible in Nutanix Sizer tool/Storage Capacity Calculator?

3
manfred
5 years ago
M
Muhammad Usman Ayub
asked in How It works
Network connectivity failure scenario

Hi folks, I want to ask about the details regarding the network connectvity failure and cluster behaviour in such cases. I am mentioning two such scenarios but other scenarios may also be possible. Scenario 1. If one host in the cluster gets completely disconnected from other nodes at network level but host is up and running what will be the cluster behavior and what will happen to the vms running on that particuar host Scenario 2. If all hosts in the cluster get disconnected from each other at network level but hosts and cvms are up and running, what will happen to the vms running on each host.

1
E
5 years ago
M
Manuel80Explorer
asked in How It works
Mixed Hypervisor in same cluster ?

Hello, with latest AOS (5.10 or newer) it's possible to run multiple hypervisor in same cluster ? For example one cluster with 5 nodes with esxi and 3 nodes with AHV ? Thanks Manuel

1
RichardsonPorto
Nutanix Employee
5 years ago
S
Stefano P.Wayfarer
asked in How It works
Space really available in a container with thick provisioned VM

Hi all, we are performing a POC and we have a cluster that originallly had about 30 Tib of available space made of SSD+ HDD. Then, to show the customer the performance improvement moving to All Flash we made an inline conversion addind SSD and removing all the HDD and now we have a total available space is about 11 TiB. The storage container has compression enable and the real used capacity is 4,5 Tib. The problem is that most of the VM are thick provisioned and the actual use space is reported at 12 Tib hence above the available capacity. This triggers RED alarms on the Prism console saying that he Data Resiliency is not available. So I have 2 questions: 1) since the actual used capacity is 4,5 Tib what happens in case of a disk failure? 2) how can we manage to eliminate these alarms? Question number 2) is particularly relevant since if we succeed in the POC and the customer could purchase Nutanix all flash systems , they will like to use th

2
manfred
5 years ago
H
hpExplorer
asked in How It works
Is there a network status for Nutanix?

URLs such as insights.nutanix.com *.compute-*.amazonaws.com release-api.nutanix.com ... According to our security team, those URLs are white listed, so they must be down. e.g. "release-api.nutanix.com could not be reached. Please check Name Server and Proxy settings" Thx

1
J
5 years ago

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