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 July 22, 2023

Below are new knowledge base articles published on the week of July 16-22, 2023.KB 14262 - Alert - A200614 - FNSVersionMisMatch KB 14552 - P...
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Albert Mendoza
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Albert Mendoza
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Top KB Articles for June 2023

Below are the top knowledge base articles for the month of June 2023.KB 1540 - AOS Only - What to do when /home partition or /home/nutanix d...
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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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1302 Topics

M
MiguelMartinezAdventurer
asked in How It works

Deleting old VMs older than 2 years

Hello everyone,I currently have several old VMs that have been turned off for more than 2 years. No one in my workplace can tell me or remember what are they for. I am considering deleting them (to release storage), but before doing that is there something I should check before? Could those VMs be connected with online VMs in anyway for production?Could I take a useful snapshot, even though I will delete the VM afterwards?

1
G
Nutanix Employee
1 year ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

Top KB Articles for October 2020

Below are the top knowledge base articles for the month of October 2020.KB 7503 - NX Hardware [Memory] – G6, G7 platforms - DIMM Error handling and replacement policy KB 4116 - NX Hardware [Memory] – Alert - A1187, A1188 - ECCErrorsLast1Day, ECCErrorsLast10Days KB 1540 - What to do when /home partition or /home/nutanix directory on a Controller VM is full KB 4141 - Alert - A1046 - PowerSupplyDown KB 4158 - Alert - A1104 - PhysicalDiskBad KB 4409 - LCM: (LifeCycle Manager) Troubleshooting Guide KB 1113 - HDD/SSD Troubleshooting KB 6970 - PE-PC Connection Failure alerts KB 2090 - AHV | Host Networking KB 4519 - NCC Health Check: check_ntp KB 2473 - NCC Health Check: cvm_memory_usage_check KB 4272 - Alert - A6516 - Average CPU load on Controller VM is critically high KB 6945 - How Upgrades Work at Nutanix KB 7386 - NCC Health Check: power_supply_check KB 1863 - NCC Health Check: sufficient_disk_space_check KB 3523 - How to create a Phoenix ISO or AHV ISO from a CVM or Foundation VM KB 463

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Albert Mendoza
Nutanix Employee
3 years ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending September 12, 2020

Below are new knowledge base articles published on the week of September 6-12, 2020.KB 9960 - AD user cannot manage PC and NCC upgrades after upgrading to PC 2020.8 version KB 9980 - Cluster outage may occur during an LCM upgrade when restoring block fault-tolerance KB 9981 - SSP | VM nic update task performed by SSP user may fail on Prism Central 5.17 and above versions KB 9985 - Intermittent Network Disconnects Due to MAC Learning Disabled When Using AHV Bond Mode Balance-SLB KB 9989 - LCM : Could not find any upgrading entities forgroup Group-Cluster Service-Foundation KB 9995 - Move - Guest preparation may fail when SSL is enabled on Windows VMNote: You may need to log in to the Support Portal to view some of these articles.

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Albert Mendoza
Nutanix Employee
3 years ago
A
AbdulrahmanAdventurer
asked in How It works

vSphere over Nutanix

Good day dearsI have 2 nutanix blocks, each 3 nodes , I have the following questions:I have vSphere license and I want to install it on the nodes, I only have prism element ( don`t have prism center) , should this work or I have to buy vCenter? While connecting the nodes to the same switch besides the firewall, should the switch be on access mode in order to Discover the nodes while using foundation, or I can segment the nodes through VLANS?

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Moustafa Hindawi
1 year ago
N
Nur AkbarAdventurer
asked in How It works

Need AOS 5.10.0.1

Hi i need to download AOS 5.10.0.1 LTS

4
N
2 years ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending February 4, 2023

Below are new knowledge base articles published on the week of January 29-February 4, 2023.KB 12456 - NCC Health Check: ahv_gateway_check KB 13445 - Alert - A130377 - StaleVolumeGroup KB 13611 - Alert - A130382 - SynchronousReplicationPausedOnVM KB 13739 - Alert - A300441 - RecoveryPlanDynamicSubnetExtensionDeletionFailure KB 13773 - Alert-A130385 - SyncedVolumeGroupRunningAtSubOptimalPerformance KB 13796 - Alert - A130386 - AutoPlannedFailoverOfVolumeGroup KB 14126 - LCM Pre-check: test_ptagent_status KB 14173 - The cluster raises "A130184: Data At Rest Encryption key backup warning: Last user backup taken at MMM DD" even after performing the backup. KB 14211 - OpenShift 4.12 installation via the “openshift-install create install-config” command fails KB 14222 - Nutanix Database Service - Ubuntu/Debian DB Provisioning is failing due to static IP allocation failure KB 14224 - LCM UI is not available and inventory task stops at 0% KB 14234 - Alert - A160054 - File Server Partner Server

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Albert Mendoza
Nutanix Employee
9 months ago
L
LimExplorer
asked in How It works

When cluster has no free space, does data rebuilding occur

Hello Community!! I'd like to discuss an ambiguous issue.There is an 3-nodes Hybrid Storage AHV cluster set to RF2. In this case, each node has 70% storage usage. Each node’s storage capacity is same.Of course, it's 70 percent overall.The data resiliency status is critical.That cluster has enough CPU and memory. The problem comes up from here.If one node goes down, will data rebuild occur?If data rebuilding occurs, the total cluster capacity will be over 95%.That would cause problems with the cluster's IO. Is there anyone who can clearly tell me how the cluster works in the event of a failure in that situation.

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L
2 years ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending March 18, 2023

Below are new knowledge base articles published on the week of March 12-18, 2023.KB 13746 - NCC health check: LongRunningSubtasks KB 13913 - LCM inventory fails with the error "nothing to open" on pc.2021.9.0.5 and later due to frequent registration/unregistration KB 14088 - NCC Health Check: check_host_password_expiry KB 14307 - Unable to start docker due to inode exhaustion in Objects cluster. KB 14391 - AHV upgrade or host rolling reboot tasks may fail on AHV clusters with AMD CPU during test_cluster_config pre-check KB 14433 - Objects: Bucket deletion failed with "The bucket you tried to delete is not empty. You must delete all versions in the bucket." error KB 14450 - Oracle DB in Oracle Dataguard configuration shows high latency / lag while performing NDB operation KB 14467 - Cluster will fail to upgrade through LCM if AOS version is 5.10.x or 5.5.x KB 14477 - NCC check may fail to complete due to vCenter connectivity failure KB 14479 - AHV hosts or VMs may lose network connectiv

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Albert Mendoza
Nutanix Employee
8 months ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending July 30, 2022

Below are new knowledge base articles published on the week of July 24-30, 2022.KB 13191 - HPE-LCM - SPP 2022.03.0 upgrade is blocked for certain HPDX platforms KB 13239 - vCenter incomplete Maintenance Mode tasks prevent VM migration during LCM upgrades KB 13390 - RBAC users are unable to perform certain Categories operations after upgrading to pc.2022.4/pc.2022.6 KB 13408 - LCM Upgrade get stuck when multiple components are selected with AOS KB 13415 - Smart DR ACL Loss KB 13422 - Licensing - False-positive alerting for NCI licenses KB 13424 - Open Source SupportNote: You may need to log in to the Support Portal to view some of these articles.

2
Albert Mendoza
Nutanix Employee
1 year ago
I
itops-mgmt-31630Adventurer
asked in How It works

SSL Cert Update Issue

So i uploaded my new certs, everything went fine, prism then restarted, but then I get the following message when trying to connect again.refused to connect.I’ve stoped the prism service and did a cluster start, prism is showing as running but I can’t get anything other then the above message.I can’t even update the certs again incase its a cert issue as the web interface is not working and I can’t for the life of me find a way to do it via ssh.

2
I
1 year ago
D
Dr.MVoyager
asked in How It works

VM-VM Anti Afinity configuration

Hi, How can I disable ani-affinity rules ? 

6
mikkisse
8 months ago
C
CarloNXTrailblazer
asked in How It works

Re-seat Physical RAM

Hello,Seeking for advice, I have 3 nodes cluster having problem with node B DIMM is undetected. I’m planning to reseat my DIMM, if I will just manually move the VMs to node A and C then perform a shutdown on node B without entering maintenance mode does the VM will join back to node B?Can please also share a link to a document to refer for the procedure.

1
N
Nutanix Employee
2 years ago
G
GavExplorer
asked in How It works

Snapshot & System storage usage via Rest API

Hi,Looking to automate some reports using the Rest API. So far I can successfully pull out CPU, RAM and Physical & Logical storage cluster wide and snapshot details but am unable to calculate the values as shown on the capacity runway when viewing a cluster in PC.. specifically the storage usage figure for ‘snapshots’ and ‘system.Anyone know how these are calculated?Thanks

0
G
2 years ago
D
DaveKozPathfinder
posted in How It works

Hanging while booting to hard disk via PVS ???

Create3 new hard drive in PVS. Trying to boot via PVS and system boots directly to hard drive. Doesn’t use PVS even though the BDM iso points to PVS.  Anyone have any ideas.  Using Citrix LTSR 1912 ThanksDave 

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D
3 years ago
N
n-tchenPathfinder
asked in How It works

Execute a NC-Check from remote via Ansible

Hello,I'm trying to execute a NC-Check via Ansible on all of our clusters, because till know it failed because of a missing firewall unlock. It seems to work kind of fine until the very end, were it does not say "Failed" or "Passed" (or something like that) but "Failed to execute NCC..":         "stdout_lines": [            "",            "################################################",            "# TIMESTAMP : 07/02/2021  2:33:05 PM (UTC +0200)",            "################################################",            "ncc_version: 4.0.1-329829c4",            "cluster id: 7805490355129540044",            "cluster name: gbru0010",            "node with service vm id 5",            "    service vm external ip: 10.202.89.19",            "    hypervisor address list: [u'10.202.89.15']",            "    hypervisor version: VMware ESXi 6.7.0 build-17700523",            "    ipmi address list: [u'10.202.89.11']",            "    software version: euphrates-5.15.1-stable",            "  

0
N
2 years ago
G
GodabaPathfinder
asked in How It works

Learning AHV and AOS

Hi All, I am a beginner to Nutanix, just wanted to AHV / AOS! how its function.

1
R
Nutanix Employee
2 years ago
J
Jason.SandauAdventurer
asked in How It works

Snapshot replication was skipped newer snapshot is available

The last couple days I have received an error email indicating that snapshot replication to AWS was skipped because a newer snapshot is available. I'm looking at the replication status and I see:Id                        : 15008898    Protection Domain         : Exchange    Replication Operation     : Sending    Start Time                : 04/09/2021 19:49:01 MDT    Remote Site               : *RemoteSite*    Snapshot Id               : 15008893    Aborted                   : false    Paused                    : false    Bytes Completed           : 75.22 MiB (78,870,811 bytes)    Complete Percent          : 3.2552084E-4    Id                        : 14973755    Protection Domain         : ERP    Replication Operation     : Sending    Start Time                : 04/08/2021 18:00:01 MDT    Remote Site               : *remoteSite*    Snapshot Id               : 14973750    Aborted                   : false    Paused                    : false    Bytes Completed           : 1.4 GiB (1,508

1
P
2 years ago
A
AwaisVoyager
asked in How It works

Two VM on different node in same cluster using same storage on both VMs

I need this type of solution two VM on different node in same cluster using same storage  on both VMs   

4
UPX
2 years ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending May 28, 2022

Below are new knowledge base articles published on the week of May 22-28, 2022.KB 12211 - Alert - A200803 - AZNameUpdateFailed KB 12219 - Disconnecting Availability Zone fails KB 12428 - Alert - A110026 - Nutanix Cloud Clusters (NC2) - CloudAPIEndpointUnreachable KB 12445 - NCC Health Check: ahv_duplicate_secondary_ip_check KB 12699 - How to map a block to Rack after chassis or node replacement or after relocation KB 12711 - Missing link to reset the Nutanix Support Portal password KB 12782 - NCC Health Check: pmem_health_check KB 12783 - NCC Health Check: pmem_size_check KB 13014 - File copy throughput differs based on Windows version KB 13068 - Microseg update task failures every 1-2 minutes on a cluster where microseg has been disabled using acli KB 13070 - VM may experience network issues due to Flow rules left over from a previous VM that used the same Tap port KB 13157 - LVM partition "home" disappeared from a new RHEL 9.0 guest VM with SCSI disk running on AHV KB 13161 - CVM and

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Albert Mendoza
Nutanix Employee
1 year ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending February 20, 2021

Below are new knowledge base articles published on the week of February 14-20, 2021.KB 9314 - Nutanix-Auth-FAQ KB 9866 - NCC Health Check: ergon_checks KB 10310 - Alert A801101 - L2StretchDeletionFailure KB 10574 - Pre-Upgrade check: test_vmd_node_esxi_upgrade_versions_compatible KB 10657 - Discrepancy between Memory Capacity on Prism and Hyper-V KB 10720 - Modify snapshot expiration date and time for Xi Leap snapshots KB 10758 - PDF Report generation fails on Prism Central after upgrading to pc.2021.1 KB 10762 - Prism Central reports showing "No Data" when multiple filtering rules are applied to filter specific entities KB 10765 - AHV upgrades from 20170830.x to 20190916.x and 20201105.x on Dell clusters fail with "Failed to run 'yum remove -y DellPTAgent dcism': 1" error message. KB 10776 - NGT installation fails on Linux VM with Permission denied error KB 10787 - LCM pre-check failing with Failed while performing pre_actions err: Unable to boot cvm [xx.xx.xx.xx] into ivu. KB 10789 -

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Albert Mendoza
Nutanix Employee
2 years ago
Riddhima.singh
Nutanix Employee
Riddhima.singhNutanix Employee
posted in How It works

Handling AWS Health Notifications

Nutanix Clusters Console receives the results of the status checks performed by AWS to see the status of the instances.Status checks on AWS are performed every minute, returning a pass or a fail status. If all checks pass, the overall status of the instance is OK. If one or more checks fail, the overall status is impaired.    There are two types of status checks, system status checks, and instance status checks. System status checks monitor the AWS systems on which instance runs. Instance status checks monitor the software and network configuration of individual instances.If Nutanix Orchestrator detects that AWS has marked system status or instance status of an instance impaired, following WARNING message will be seen in the Notification Center of the Nutanix Clusters Console: More information on - http://portal.nutanix.com/9704 What does Nutanix Cluster On AWS mean :- Nutanix Clusters provides a single platform that can span private and public clouds but operates as a single c

0
Riddhima.singh
Nutanix Employee
3 years ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending December 18, 2021

Below are new knowledge base articles published on the week of December 12-18, 2021.KB 10013 - Alert - A110023 - Cloud Subnet Not Found KB 11629 - NCC Health Check: recovery_plan_vm_volume_attachment_config KB 11831 - NCC Health Check: crash_dump_check KB 11983 - NCC Health Check: hyper_threading_enabled_check KB 12447 - NX-G8: Nutanix BMC and BIOS Manual Upgrade Guide KB 12457 - LCM shows 'Hardware Entities' update as available even after updating it via LCM however the update option is greyed out KB 12462 - Getting "This API is not supported on Prism Central" error when trying to update Virtual Switch (vs0) configuration via Prism web console KB 12482 - MSP/Objects CVE-2021-44228 Advisory KB 12483 - Karbon CVE-2021-44228 Advisory KB 12484 - Nutanix Mine CVE-2021-44228 Advisory KB 12489 - Prism does not load Remote Site settings after removing a network from PE KB 12491 - Security mitigation for Apache log4j2 vulnerability on Witness VM 6.x (CVE-2021-44228) KB 12499 - Files Analytics

0
Albert Mendoza
Nutanix Employee
1 year ago
maaz
Nutanix Employee
maazNutanix Employee
posted in How It works

Life Cycle Management (LCM 2.3.2)

It enables administrators to take inventory of the firmware and software in their Nutanix environment and perform updates in a simple, cluster-aware, fashion. LCM adds a management layer and logic that deploys firmware/software upgrades taking into account upgrade paths and potential conflicts between versions.  LCM performs two operations: Inventory: Detects what can be managed on a cluster. Update: Performs an update to a certain version. With Release of LCM 2.3.2 we have introduced a new page which shows best practices guide and redirect you to FAQ’s troubleshoot guide     it introduces two new FEAT’s along with several others AOS upgrade FEAT-10222 PC upgrade FEAT-10223 List of supported Firmware updates Nutanix (NX) Dell XC / XC Core Lenovo HX / HX Ready HPE DX Fujitsu XF Intel DCB HPE DL (G10) Inspur InMerge Please follow the links to check out additional information https://portal.nutanix.com/page/documents/details?tar

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maaz
Nutanix Employee
3 years ago
maaz
Nutanix Employee
maazNutanix Employee
posted in How It works

Running AHV Architecture

Nutanix offers enterprise ready hypervisor. Its integrated with Nutanix enterprise cloud OS stack. Below diagram shows how a single AHV node looks The AHV is built upon the CentOS KVM foundation and it include features like HA, live migration.KVM architecture consists of following components  KVM-kmod Libvirtd:An API, daemon and management tool for managing KVM and QEMU.  Qemu-kvm: A machine emulator and virtualizer that runs in userspace for every Virtual Machine (domain) For details about AHV architecture please refer following articleAHV

0
maaz
Nutanix Employee
2 years ago
Alona
Nutanix Employee
AlonaNutanix Employee
posted in How It works

Best Before Date For Manually Uploaded Upgrade Packages

We’re over a hump day, and I would like to share an insight that may come handy to those of you that upload binaries to their clusters manually. Did you know that you have seven days to use the upgrade package that you uploaded to the cluster manually before it is removed from the file system? That’s right. Even if you have triggered pre-upgrade checks for the version, but the package is not used it deleted automatically. Make sure to clean up uncompressed software location and check the /home space on a CVM before you re-attempt the upload.KB-10300 Uploaded AOS upgrade binary is unavailable on Prism has more information To wrap your head around upgradesAll things considered — upgrade sequence and preaparation guidelinesFoundation of a successful upgrade - up to date FoundationNutanix upgrades FAQ: AOS, LCM, NCC, Hypervisors, Files

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Alona
Nutanix Employee
3 years ago

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