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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Top KB Articles for October 2022

Below are the top knowledge base articles for the month of October 2022.KB 1540 - [AOS Only] What to do when /home partition or /home/nutani...
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Albert Mendoza
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Albert Mendoza
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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_...
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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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1223 Topics

Kiran Surya
Nutanix Employee
Kiran SuryaNutanix Employee
posted in How It works

Improving database performance by spreading VMDKs across SCSI Controllers

Nutanix infrastructure customers often suffer performance issues on their database, and call in to Nutanix Technical Support to help them resolve them.  One aspect I have observed with database customers, and which impacts their performance, is the placement of the VMDKs on SCSI Controllers.  Assuming that there are four VMDKs serving the database VM, they might have configured the four VMDKs as follows.  This is an extract from the ESXi Host which the VM is running on:[root@esxasrk63u35:/vmfs/volumes/9f254e88-e3c751d/pqrsd00][root@esxasrk63u35:/vmfs/volumes/9f254e88-e3c751d/pqrsd00] cat pqrsd00.vmx | grep vmdk -A3scsi0:0.fileName = "pqrsd00.vmdk"sched.scsi0:0.shares = "normal"sched.scsi0:0.throughputCap = "off"scsi0:0.present = "TRUE"--scsi0:1.fileName = "pqrsd00_1.vmdk"sched.scsi0:1.shares = "normal"sched.scsi0:1.throughputCap = "off"scsi0:1.present = "TRUE"--scsi0:2.fileName = "pqrsd00_2.vmdk"sched.scsi0:2.shares = "normal"sched.scsi0:2.throughputCap = "off"scsi0:2.present = "TRUE"-

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Kiran Surya
Nutanix Employee
2 years ago
J
John1Scout
asked in How It works

Security logging and SIEM

We are implementing Nutanix with VMware. From a security point of view we want to monitor our new hosting platform. All other systems in the environment log to our SIEM product. Is there any guidance or can anyone give me some guidance on what to have switched on in the logging and to what level?

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

Top KB Articles for June 2020

Below are the top knowledge base articles for the month of June 2020. KB 4116 - Alert - A1187, A1188 - ECCErrorsLast1Day, ECCErrorsLast10Days KB 7503 - G6, G7 platforms - DIMM Error handling and replacement policy KB 1540 - What to do when /home partition or /home/nutanix directory is full KB 4141 - Alert - A1046 - PowerSupplyDown KB 7604 - Disk space usage for root on Controller VM has exceeded 80% KB 4158 - Alert - A1104 - PhysicalDiskBad KB 1113 - HDD/SSD Troubleshooting KB 4409 - LCM: (LifeCycle Manager) Troubleshooting Guide KB 2090 - AHV | Host and Guest Networking KB 4519 - NCC Health Check: check_ntp KB 3357 - NCC Health Check: ipmi_sel_cecc_check KB 2473 - NCC Health Check: cvm_memory_usage_check KB 2486 - NCC Health Check: cvm_mtu_check KB 4273 - NCC Health Check: aged_third_party_backup_snapshot_check and  aged_entity_centric_third_party_backup_snapshot_check KB 1863 - NCC Health Check: sufficient_disk_space_check KB 3741 -  Nutanix Guest Tools Troubleshootin

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Albert Mendoza
Nutanix Employee
2 years ago
N
netgerWayfarer
asked in How It works

Nutanix vs Riverbed SteelFusion

Hi,I am exploring is there any Nutanix solution can like-for-like replace Riverbed Steelfusion solution?

1
P
2 years ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending July 23, 2022

Below are new knowledge base articles published on the week of July 17-23, 2022.KB 13120 - Alert - A400118 - DomainManagerServiceDown KB 13172 - Prism Analysis Dashboard - Disk Usage Percent and Disk Usage Bytes metrics for User VMs show either no data or limited data KB 13230 - File Analytics: Upgrade failed with "Internal IP for dual NIC not found" KB 13311 - [Objects][Alerts] Alert - KubeClientCertificateExpiration KB 13366 - LCM upgrades fail with "Stream Timeout" when using Dark Site local web server KB 13383 - Connection heartbeat workflow failures results in alerts not displaying for PE-PC or PC-PC connection issues on pc.2022.4 KB 13386 - Metro Protection Domain(s) on ESXi and HyperV may be disabled during maintenance operations involving rolling reboots KB 13405 - Enable Remote Tunnel for Prism CentralNote: You may need to log in to the Support Portal to view some of these articles.

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Albert Mendoza
Nutanix Employee
10 months ago
C
CyberGTrailblazer
asked in How It works

Versions of all Nutanix components

HiIs there a way to check the versions of all Nutanix components in one view? “ncli cluster info” displays the AOS and NCC versions, but not those of AHV and PC. The AHV and PC versions may be obtained from the PC UI (in different places though). Further, the Nutanix release timeline shows AOS 5.18 as the latest, but the documentation has tags for 5.19?

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

New KB Articles Published on Week Ending December 7, 2019

Below are new knowledge base articles published on the week of December 1-7, 2019. KB 8546 - Pre-check: test_nsx_configuration_in_esx_deployments KB 8624 - PulseHD shows RED if dmidecode.exe is missing KB 8631 - Accessing Prism Via Citrix NetScaler (ADC) KB 8669 - Nutanix Files - long filename isn't supported yet. KB 8671 - How to determine which M.2 device failed on the node KB 8680 - Metro - Recovery procedure after two-node down scenarios Note: 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
Kiran Surya
Nutanix Employee
Kiran SuryaNutanix Employee
posted in How It works

Print the size of a VM in Bytes, KiloBytes, MegaBytes and GigaBytes

Nutanix customers using AHV as their Hypervisor often need to evaluate resources being used/consumed on their infrastructure.  One of those factors involved is in calculating how much space has been consumed by one or more Virtual Machines.  It is possible to get granular in this scenario and be able to calculate the amount of space taken up by a VM.  Depending on their environment, it should be possible or feasible for one to print out the space usage in terms of Bytes, KiloBytes, MegaBytes or GigaBytes.I have developed the following string manipulation to be able to get those numbers.  Here is a sample from one of the checks I performed:nutanix@NTNX-20FM6L56789-A-CVM:172.31.1.11:~$nutanix@NTNX-20FM6L56789-A-CVM:172.31.1.11:~$ acli vm.list | grep 120-Windows-Invent120-Windows-Invent 99021293-4ea5-440a-a894-846ed07de132nutanix@NTNX-20FM6L56789-A-CVM:172.31.1.11:~$nutanix@NTNX-20FM6L56789-A-CVM:172.31.1.11:~$ acli vm.get 120-Windows-Invent | grep vmdisk_size | awk '

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Kiran Surya
Nutanix Employee
2 years ago
H
HongAdventurer
asked in How It works

Prism log (Alerts/Events) forwarding

I want to transfer Prism Alerts, Events logs to another log collection server. A log collection server is a solution called innerbus. How can I send it?

3
E
1 year ago
P
PSLAdminAdventurer
asked in How It works

Private networks

I have a question regarding private networks.  I have an NFS share that resides in the 192.168.20.x network, however my Nutanix public (Internet access) network is in the 10.10.2.x.  I need to create a network where my VM can talk to the NFS server.  I’ve reviewed some YouTube videos but they’re not very helpful.  Any better documentation out there?

6
Alona
Nutanix Employee
2 years ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending August 29, 2020

Below are new knowledge base articles published on the week of August 23-29, 2020.KB 9683 - Move: User privileges required for migrating Resource Pool based VMs KB 9760 - When creating/updating a Recovery plan on Network settings' page, Production and Test failover subnets are not shown correctly and a message 'No options available' is displayed in the UI KB 9819 - VM power on failure on AWS. Error: Failed to PlugNic KB 9848 - SSP - Project creation failed error "user_capability mandatory field: username is missing" KB 9898 - LCM 2.3.3 - How to update lcm_family attribute for Intel DCB nodes? KB 9905 - AHV upgrade becomes stuck because host is in the process of an HA failover and could not be placed into Maintenance Mode KB 9916 - LCM: Inventory failed for release.smc.sata_update.update due to failed drive on node KB 9918 - Enabling HA on vSphere 7.0 cluster fails to enable VMCP because of ESXi host(s) with APD Timeout disabled. KB 9925 - How to delete all data sent to Nutanix by Pulse

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Albert Mendoza
Nutanix Employee
2 years ago
S
SinghKAdventurer
asked in How It works

Is It Possible to Remove Two Nodes From A Cluster?

I have a Nutanix cluster with 4 hosts and 4 blocks. Is it possible to remove two nodes from Cluster ?

1
Alona
Nutanix Employee
2 years ago
Shaurya
Nutanix Employee
ShauryaNutanix Employee
posted in How It works

NCC Series | same_timezone_check

Let’s say you received an alert stating that all CVMs are not in the same timezone or all hosts are not in the same timezone.   What does it mean? Well, as simple as the alert indicates, the CVMs/hosts are not in the same timezone. We need to ensure that the same timezone is configured across all the CVMs/Hosts as it ensures that all the guest VMs log messages are timestamped consistently.   How will you know about the timezone issue? There is an NCC health check, “same_timezone_check” in place to inform any discrepancy in the timezones.   To know more about the alerts and errors which can be seen and how to change the timezone, take a look at https://support-portal.nutanix.com/#/page/kbs/details?targetId=kA0600000008hm9CAA   Have any questions? Leave a comment and let’s start a discussion.

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Shaurya
Nutanix Employee
3 years ago
S
SinghKAdventurer
asked in How It works

LCM Framework version 2.3.3

Can anyone let me know the release date of the LCM Framework  version 2.3.3 ?

1
N
Nutanix Employee
2 years ago
R
Nutanix Employee
raajiNutanix Employee
posted in How It works

Updating directory Services and Authentication - Files

To update the directory services configuration, do the following:Procedure: Go to the File Server dashboard, click the File Server tab, select the target file server and then click Protocol Management Click Directory Services In the Directory Services window, select the protocols you want to use and complete the fields for the selected protocols. You can select SMB, NFS or both. Each protocol contains more fields to complete.      4.  When all the fields are correct, click the Update button. Authentication:Depending on the primary and secondary protocols configured for your file server, access and authentication configuration vary. File servers using SMB protocol must configure Active Directory (AD). File servers using the NFS protocol can use Lightweight Directory Access Protocol (LDAP), AD, or unmanaged authentication services. LDAPWhen you configure LDAP as the authentication service, Files uses Netgroups to control client access. The Files LDAP setup is based on the RFC 2307 st

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R
Nutanix Employee
1 year ago
Shaurya
Nutanix Employee
ShauryaNutanix Employee
posted in How It works

Maintenance mode | AHV vs ESXi

Most of us are aware of what maintenance mode is. But how is its execution different in ESXi and AHV in Nutanix?   Well… it’s just a small tweak!   While trying to put ESXi host in maintenance mode, it will get stuck as the CVM, which cannot be migrated off to other hosts, needs to be powered off and then the action will be completed.   In the case of AHV, this need not be done, once you provide the instruction to put the host in maintenance mode, the user VMs will be migrated to other hosts and the host will enter maintenance mode, irrespective of the CVM being powered off.   In short, “The CVM need not be powered off to put AHV host in maintenance mode, which is the case with ESXi”   Have any questions? Leave them below and let’s start a discussion! Check out the community post https://next.nutanix.com/how-it-works-22/cluster-maintenance-or-relocation-33391 for more on cluster maintenance or relocation.

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Shaurya
Nutanix Employee
3 years ago
D
Dennis112233Trailblazer
asked in How It works

Looking for AHV 20190916.321 Download

Where can I download AHV 20190916.321?  or any AHV versions?

1
aluciani
1 year ago
maaz
Nutanix Employee
maazNutanix Employee
posted in How It works

AHV networking

AHV uses Open vSwitch (OVS) to connect the CVM, the hypervisor, and guest VMs to each other and to the physical network.    Open vSwitch: OVS is an open source software switch implemented in the Linux kernel and designed to work in a multiserver virtualization environment. By default, OVS behaves like a layer-2 learning switch that maintains a MAC address table.  Bridges Bridges act as virtual switches to manage network traffic between physical and virtual network interfaces. The default AHV configuration includes an OVS bridge called br0 and a native Linux bridge called virbr0 Ports Ports are logical constructs created in a bridge that represent connectivity to the virtual switch BondsBonded ports aggregate the physical interfaces on the AHV host. By default, a bond named br0-up is created in bridge br0   VLANs for AHV Hosts and CVMs     The recommended VLAN configuration is to place the CVM and AHV in the default “untagged” (or native) VLAN, as shown belo

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maaz
Nutanix Employee
2 years ago
K
Kike2020Adventurer
asked in How It works

Error Genesis not starting

Someone who can support me, was doing the idrac update (Hyper-V hypervisor) and failed, but now the node is out and can not lift the services, I try to restart it from the console and I get the error message:2019-12-11 14:04:41 INFO zookeeper_session.py:131 cvm_shutdown is attempting to connect to Zookeeper 2019-12-11 14:04:41 WARNING lcm_genesis.py:219 Failed to reach a [localhost] where LCM [LcmFramework.is_lcm_operation_in_progress] is up. Retrying... 2019-12-11 14:04:46 WARNING lcm_genesis.py:219 Failed to reach a [localhost] where LCM [LcmFramework.is_lcm_operation_in_progress] is up. Retrying... 2019-12-11 14:04:51 WARNING lcm_genesis.py:219 Failed to reach a [localhost] where LCM [LcmFramework.is_lcm_operation_in_progress] is up. Retrying... 2019-12-11 14:04:56 WARNING lcm_genesis.py:219 Failed to reach a [localhost] where LCM [LcmFramework.is_lcm_operation_in_progress] is up. Retrying... 2019-12-11 14:05:01 WARNING lcm_genesis.py:219 Failed to reach a [localhost] where LCM [Lcm

7
K
3 years ago
R
Nutanix Employee
raajiNutanix Employee
posted in How It works

Migrating Guest VM From A Protection Domain To A Protection Policy

You can protect a guest VM either with a protection domain in Prism Element or with a protection policy in Prism Central. If you have guest VMs in protection domains, migrate those guest VMs to protection policies to orchestrate their disaster recovery using Leap Migration from protection domains to protection policies is a disruption process. For successful migration, Ensure that the guest VMs have no on-going replication. Ensure that the guest VMs do not have volume groups. Ensure that the guest VMs are not in consistency groups.  To migrate a guest VM from a protection domain to a protection policy manually, perform the following procedure. Procedure: Unprotect the guest VM from the protection domain Do not delete the guest VM snapshots in the protection domain. Prism Central reads those guest VM snapshots to generate new recovery points without full replication between the primary and recovery Nutanix clusters. If you delete the guest VM snapshots, the VM data replicates

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R
Nutanix Employee
1 year ago
A
Amit_kumarAdventurer
asked in How It works

Nutanix Volumes with Oracle RAC physical nodes

We are facing performance issues with Nutanix volumes configured with Oracle RAC physical nodes. The latency is very high (25-30 ms).  Anyone has any suggestions on this.

3
Alona
Nutanix Employee
2 years ago
ShvetaD
Nutanix Employee
ShvetaDNutanix Employee
posted in How It works

Monitoring A Two-node Cluster During Failover And Upgrade

What is happening to my 2 node cluster during a failover or an upgrade?What does a recovery process look like after a node failure?If you are wondering the above, we have the answer for you! You can monitor the progress of your 2 node cluster in these situations through Prism Element.To monitor node recovery progress after failover: Registering a witness is highly recommended to help the cluster handle the failover situation automatically and gracefully.  Stand-Alone mode: A failed node would trigger cluster to transition into stand-alone mode during which the following occurs: Failed node is detached from metadata ring. Auto rebuild is in progress. Surviving node continues to serve the data. Heartbeat: Surviving node continuously pings its peer. As soon as it gets a successful reply from its peer, clock starts to ensure that the pings are continuous for the next 15 minutes. If a ping fails after a successful ping, the timer will be reset.  Prism Element Home page shows Critical

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ShvetaD
Nutanix Employee
2 years ago
S
Shield07Adventurer
posted in How It works

Nutanix VM affinity rule

Cluster configured RF2 with 3 nodes.I have Created VM with Affinity Rule.If we configured RF2 to maintain 2 numbers of data copies in the cluster.If the Host down, Affinity rule VM also Down.Affinity VMs ⇒ How many data copies are maintained in these VMs. If it's maintained, Why?Note : Affinity rule applied some application licensing, host resources (such as available CPU cores or CPU gigahertz speed), available RAM or RAM speed, or local SSD capacity.

5
S
7 months ago
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works

New KB Articles Published on Week Ending December 21, 2019

Below are new knowledge base articles published on the week of December 15-21, 2019. KB 8204 - Alert - A1061 - vDisk Block Map Usage High Critical KB 8284 - Alert - A130151 - Two node cluster state change to KB 8640 - Prism one click upgrade : Preupgrade/Upgrade options not available after manually uploading metadata json and upgrade bundle KB 8743 - Alerts relating to IPMI sensors report that the component cannot be monitored or be permanently damaged. KB 8747 - Anonymous IPMI user Note: 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
K
Nutanix Employee
kenNutanix Employee
posted in How It works

Nutanix Support is Awesome

Many customers buy #hci technology from the usual suspects (#nutanix, #vmware, #dell, etc.) without any consideration to what happens when things break. Support becomes REALLY important when your systems are not operating as expected.  Thankfully, they don't have to worry if they bought Nutanix. Hear what #nutanix customers say about our award winning #nps90 #support.    

0
K
Nutanix Employee
3 years ago

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