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3161 Topics
Sayo
SayoAdventurer
asked in Installation & Configuration
AOS version is different that additional node for expanding cluster

Hi,Ｉ plan expanding cluster to add 3 nodes that model are XC640 and hypervisor is ESXi 6.7 U2.Cluster’s AOS versio is 5.10.6 LTS but additional node’s 5.16STS.I cannot add nodes...Can I anything to do additional nodes?And Do you know how to recreate CVM on new nodes?

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Neel Kotak
Nutanix Employee
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Nutanix Employee
NutonianNutanix Employee
posted in How It works
Controller VM Components

 Ever wondered what are some of the main services/components that make up Nutanix?The following is a simplified view of the main Nutanix cluster components.All components run on multiple nodes in the cluster and depend on connectivity between their peers that also run the same component. Cluster components ZeusKey Role: Access interface for Zookeeper·  A key element of a distributed system, zeus is a method for all nodes to store and update the cluster's configuration. This zeus configuration includes details about the physical components in the cluster, such as hosts and disks, and logical components, like storage containers. The state of these components, including their IP addresses, capacities, and data replication rules, are also stored in the cluster configuration.·  Zeus is the Nutanix library that all other components use to access the cluster configuration, which is currently implemented using Apache Zookeeper. MedusaKey role: Access interface for Cassandra·  Distributed sy

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Nutanix Employee
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Nutanix Employee
Mohammed111Nutanix Employee
posted in How It works
Why does my Nutanix cluster not show free or reclaimed space after deleting many VMs or files?

We notice that after deleting VMs or Files the free space on Nutanix cluster doesn’t  increase instantly and may only reflect after a few hours.  This behavior of free space being slowly presented back to the cluster is expected behavior for Nutanix. The reason for this is because of the service responsible for cleaning up space, Curator. Curator takes time to perform scans on the cluster and spreads the storage across the disks and carefully removes the correct files (egroups) while maintaining redundancy for any data you want to keep. It takes a few curator scans before all expected free space is available again. Each curator scan is scheduled to be performed once per hour. To remove more data, it will take longer time for curator to clean up data relative to the existing workload of the cluster. In case after 24 hours, the space is not reclaimed and does not appear as free space, contact Nutanix Support for assistance with diagnosing the cluster health.  Portal document explaining t

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Nutanix Employee
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vicdeveloperExplorer
asked in How It works
AHV Oracle Solaris OS

Hello Community,Just, I want to know how can I setup a Solaris 11.4 or Solaris 11.3 VM on Nutanix, any guide or walkthrough?. Please, let us know how can we have this OS running on AHV. We have AOS 5.15 LTS.

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Diego Oliveira
Alona
Nutanix Employee
AlonaNutanix Employee
posted in Installation & Configuration
Nutanix Move and Hyper-V

Nutanix Move (Move) is a cross-hypervisor mobility solution to move VMs with minimal downtime. Move supports migration from the following sources to targets, where first platform being the source and second platform being the target.Starting with version 3.0 Move supports Hyper-V which means that you can now migrate consolidate your workloads from ESXi, AWS EC2 and Hyper-V on Nutanix and perform reverse migration in some cases. For a list of supported OS versions, Hyper-V versions, port requirements, useful commands and caveats be sure to check KB-6667 Hyper-V: Move | Basic understanding and troubleshooting.For all things Nutanix Move there is Move User Guide (v3.6).For a Move FAQ try KB-8070 Nutanix Move - FAQ (Frequently Asked Questions)

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Alona
Nutanix Employee
Sergei Ivanov
Nutanix Employee
Sergei IvanovNutanix Employee
posted in Installation & Configuration
How to configure a web server for LCM Dark Site on a Linux machine

If your cluster has no direct access to the internet, you can use the Dark Site LCM bundle, which you can put on a local web server and use it as a source for the LCM downloads.The web server can be a machine on the same Nutanix cluster that you want to upgrade or any other machine that the cluster will have access to. In this topic we will be creating a web server on a Linux machine and we will be using Apache Web Server. Note that this guide is for absolute beginners, so you will not need any prior experience. For this example, I have selected CentOS 7 as Linux distribution. If you want to use another distribution, the commands can be slightly different, so you will have to consult the documentation of the selected distribution. However, if you use CentOS, you can simply follow this guide. So, to start, install the CentOS selecting the “minimal install” and log in as root. Also, you can select in the installer in the Software Selection the Basic Web Server option. Then, you can skip

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Sergei Ivanov
Nutanix Employee
Sergei Ivanov
Nutanix Employee
Sergei IvanovNutanix Employee
posted in Installation & Configuration
How to configure a web server for LCM Dark Site on a Windows Server

If your cluster has no direct access to the internet, you can use the Dark Site LCM bundle, which you can put on a local web server and use it as a source for the LCM downloads.The web server can be a virtual machine on the same Nutanix cluster that you want to upgrade or any other machine that the cluster will have access to. In this topic we will be creating a web server on a Windows machine and we will be using Microsoft IIS (Internet Information Services), so you will not need to download and install any third party software. Note that this guide is for absolute beginners, so you will not need any prior experience with this technology. So, first, we need to enable the IIS. Type the “Server Manager” in the Windows search and launch it.In the Server Manager click Manage in the top right corner and select “Add Roles and Features”. Click Next until you get to the Server Roles. In the list of Server Roles, select Web Server and click Next. The default options are sufficient. Click Next

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Sergei Ivanov
Nutanix Employee
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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?

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simply_NutanixPathfinder
asked in How It works
How to update NCC via API or automate it

We have multiple clusters in our nutanix environment and where is NCC upgrade is required. Is there a way to automate this or use API to update NCC? We are on version 3.9.5 and want to upgrade it to 3.10.0.1

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John_B_newAdventurer
asked in Installation & Configuration
How do you remove an Objects store?

So, on a dev cluster with Prism Central I created a Proof-of-Concept Nutanix Objects "Store". I did some experimentation (spotted a few problems with the deployment) and then decided I wanted to remove the store. First off I tried to delete the bucket, and was told "You need to delete all versions first": grr! Went and deleted all objects, but this wasn't enough, as versioning was enabled. So, turned version lifespan down to 1 day, and waited 24 hours. Great, now I could delete the bucket - however, I can't find any option to delete the store. So, I'm stuck with the (in my mind, greedy) VMs the deployment created, as I can't even go behind it's back and do anything with the VMs, as they're "special", just like the hidden Calm project which is used to deploy the store. All in all, not very impressed on first experiences...

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Alona
Nutanix Employee
A
AngeTrailblazer
asked in Installation & Configuration
Nutanix Installation with different network ports speed

Hello Everybody,Hope you’re all doing well !I want to install Nutanix using Foundation.I have 3 Lenovo nodes and one Cisco 2960X switch that consists of 24 x 1 Gig RJ45 ports and 04 x 1 Gig SFP ports.Unlike Supermicro nodes, Lenovo nodes do not have Shared IPMI ports.So, for each Lenovo node, I have to connect 01 x 10 Gig port and 01 GbE IPMI Port to the same CISCO 2960X switch (10 Gig ports of the nodes connected to 1 Gig SFP ports of the switch and 1Gig IPMI ports to the 1 Gig RJ45 ports ).Please take a look of the picture below…Since 10 Gig ports of the nodes are connected to 1Gig ports of the switch, I wonder if this architecture can allow me to install nutanix and create the cluster without any issues ? Thanks in advance.

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Alona
Nutanix Employee
C
ChristopherRAdventurer
asked in Installation & Configuration
Upgrade AHV on AWS Cloud instance

HI We use an AWS cloud instance as a remote data protection ‘site’. The production cluster has been successfully updated to  AOS 5.15.1.1 (LTS) but this needed an AHV update to keep everything compatible.. Is is possible / desirable to upgrade the AWS cloud instance AHV ? IIRC it’s not supported to do OS upgrades (MIcrosoft OS anyway) on cloud infrastructure, it’s generally a migration to a new server. Is it possible to put a new AWS remote Nutanix instance in place and connect the backup data ??? Any advice on how to keep the whole Nutanix environment up to date is appreciated.

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Alona
Nutanix Employee
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works
New KB Articles Published on Week Ending August 1, 2020

Below are new knowledge base articles published on the week of July 26-August 1, 2020.KB 9482 - Following AHV upgrade PTAgent service does not start KB 9726 - IPMI web console is not able to log-in KB 9749 - LCM not showing available versions after successful inventory for Darksite configured on non-English WebServer KB 9788 - Convert a disk from Nutanix Volumes to a direct attached disk KB 9791 - Prism Central VM Services Will Not Start After Virtual Memory or vCPU Hot Add in AHV KB 9797 - ESXi 6.7 nodes imaged with Foundation 4.5.4 have vibs missing KB 9799 - PC Cluster Runway/Scenarios not working on PC 5.17/ 5.17.0.xNote: You may need to log in to the Support Portal to view some of these articles.

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Albert Mendoza
Nutanix Employee
Albert Mendoza
Nutanix Employee
Albert MendozaNutanix Employee
posted in How It works
Top KB Articles for July 2020

Below are the top knowledge base articles for the month of July 2020.KB 4116 - NX Hardware [Memory] – Alert - A1187, A1188 - ECCErrorsLast1Day, ECCErrorsLast10Days KB 7503 - NX Hardware [Memory] – 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 1113 - HDD/SSD Troubleshooting KB 4409 - LCM: (LifeCycle Manager) Troubleshooting Guide KB 4519 - NCC Health Check: check_ntp KB 4158 - Alert - A1104 - PhysicalDiskBad KB 2090 - AHV | Host Networking KB 2473 - NCC Health Check: cvm_memory_usage_check KB 7604 - Disk space usage for root on Controller VM has exceeded 80% KB 3357 - NCC Health Check: ipmi_sel_cecc_check KB 8860 - During AOS upgrade from a pre-5.10.2 version to a later version services on a CVM may fail to start with "stderr sudo: Account or password is expired" error KB 3523 - How to create a Phoenix ISO or AHV ISO from a CVM or Foundation VM KB 378

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Albert Mendoza
Nutanix Employee
G
Nutanix Employee
GaretNutanix Employee
posted in How It works
Managing AHV Networking using manage_ovs

Have you ever wanted to view or change the network configuration of an AHV host but thought that working directly with Open vSwitch seemed daunting or overwhelming? Don’t worry! Nutanix developers have produced an AHV-specific tool that allows for the management of Open vSwitch via a simple interface called “manage_ovs”. This interface has the following features (among others) and even maintains a built-in help system:Viewing current network interfaces statuses Viewing/changing the uplink interfaces configuration Viewing/changing the uplinks bonding configurationThe “manage_ovs” interface is available (as a command) while connected to any of the CVMs of an AHV cluster via CLI. You can find more information about the “manage_ovs” interface as per the AHV NETWORK MANAGEMENT section of the AHV Networking Guide.

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G
Nutanix Employee
G
Nutanix Employee
GaretNutanix Employee
posted in How It works
What is Flow (Microsegmentation) and How to Enable It

Nutanix Flow is a security feature which allows for firewall-type protection at the VM layer. However, flow goes another step further in allowing the configuration of “Security Policies” which can govern individual VMs or “Categories” of VMs or (grouped into convenient application-specific domains).Flow is a function of Prism Central and is disabled by default. To enable it, simply access the “Microsegmentation” option from within the “Prism Central Settings” options, tick the “Enable Microsegmentation” check box and click “OK”. To note, you may first want to review the capability checks that Prism Central automatically performs on all registered clusters prior to enablement, which is also possible right from within the “Enable Microsegmentation” dialog box.You can find more information regarding Nutanix Flow as per the FLOW MICROSEGMENTATION GUIDE found on the Nutanix Support Portal.

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Nutanix Employee
N
Nutanix Employee
nimNutanix Employee
posted in Installation & Configuration
LCM and HTTP proxy

Recently we have introduced a couple of changes in LCM.  HTTPS is a requirement for many enterprise customers. Many of our customers employ strict firewalls, Deep Packet filtering algorithms that only let certain HTTPS traffic through the external gateway. And so today we allow LCM to access the Nutanix portal over HTTPS. (The URL accessed when performing inventory is https://download.nutanix.com/lcm/2.0/)   Nutanix is transitioning from delivering LCM modules as a payload that is associated with an LCM release to delivering them as release-independent repository image modules (RIM). This includes both software and firmware modules that is available from LCM 2.3.2.  That’s great! But how does it affect me?Only if you have blocked HTTP traffic. At the time of this post,  we have identified an issue where LCM could incorrectly poll a HTTP endpoint, instead of HTTPS. It has been documented in the release notes as well. (ENG-310334)https://portal.nutanix.com/page/documents/details?targetId

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Nutanix Employee
Riddhima.singh
Nutanix Employee
Riddhima.singhNutanix Employee
posted in How It works
Do I need to arrange for a downtime for an upgrade?

Do I need to arrange for a downtime for an upgrade? How long does the process takes? If you are planning for an upcoming upgrade and have these questions, look no more:At Nutanix, upgrades are always designed to be done without needing any downtime for User VMs. Before every upgraded it is recommended to go through the Prerequisitesto avoid any issues in upgrades. This document is intended to explain a bit about how each upgrade work and to share some useful best practices for administrators.Is downtime required?No. Is there performance impact?Nutanix recommends performing upgrades during your scheduled maintenance window or outside your normal business hours. Otherwise, users might experience latency during the upgrade process. This latency may be especially noticeable for clusters that use only 1GB-speed network uplinks due to the limited bandwidth available on this configuration.How long does it take?From 15 minutes to one hour depending on number of nodes and type of upgrade For in

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Riddhima.singh
Nutanix Employee
P
pvogelVoyager
asked in How It works
/protection_domains/{name}/snapshots/{snapshot_id}/clone ignores prefix parameters

Hi allI use the v2 Prism Elements API to clone a VM from a Protection Domain Snapshot.It seems to work and the VM is created (cloned) correctly.However: The new VM always has the Prefix “Nutanix-Clone-”.The values i pass via vg_name_prefix and vm_name_prefix are simply ignored. In the Web UI (using the v1 API internally) it works fine.Please see the attached screenshots of the Web UI and the API call. Thanks in advance!

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N
Nutanix Employee
nirmal.ravirajan-57912Nutanix Employee
posted in Installation & Configuration
Emailing IPMI Event Logs

In Nutanix Hardware, the IPMI (BMC) keeps track of hardware-related events using the Event Log/System Management Feature. If there is a hardware event that needs to be dealt with, Prism will create an alert and send you an email if Alert Email Configuration is set up. However, there are still other events in IPMI that can be useful.For example, a power button assertion, a chassis intrusion, shutdown related events, or session audits (failed login attempts) will be logged by the IPMI events logs and can be forwarded via email using SMTP.If you may be interested in this functionality, check out KB 2581 to find more information on configuring SMTP in the Nutanix IPMI.

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Nutanix Employee
S
SinghKAdventurer
asked in Installation & Configuration
Dell Server query.

Team,I have a NUTANIX cluster running on the Dell Hardware with 11 Dell XC6320-6 model servers. I have spare Dell XC630-10 server and want to  check can i re purpose that server to the existing Cluster which is running with  Dell XC6320-6  hardware ?

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HITESH0801
Nutanix Employee
HITESH0801Nutanix Employee
posted in Installation & Configuration
Configurations you shouldn't change for a ESXi Hypervisor in Nutanix HCI

You have just configured the ESXi hypervisor in a Nutanix cluster, and now wondering about the recommended configuration?Below are the configurations which shouldn’t be altered in Nutanix HCI. NFS settings VM swapfile location VM startup/shutdown order iSCSI software adapter settings vSwitchNutanix standard virtual switch vmk0 interface in port group "Management Network" SSH enabled Host firewall ports that are open Wondering how to change the ESXi hostname and is it even supported?Absolutely yes, you can change the ESXi hostname  Follow the KB Mentioned below Changing ESXi Hostname  Interested to know more? Give the following articles a coffee read  How to Configure ESXi Host Networking  Changing CVM Memory configuration in ESXi  VSPHERE ADMINISTRATION GUIDE FOR ACROPOLIS 

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ShvetaD
Nutanix Employee
ShvetaDNutanix Employee
posted in Sizer Configuration Estimator
Nutanix Collector Portal

Collector Portal is the cloud version of the Collector desktop version offering a lot more in terms of features and capabilities.Collector Portal is an online repository for storing collections, creating projects for viewing, analyzing the collected data, and eventually sizing the collected data in the SIzer. The portal also allows for collaboration/sharing of the data/analysis between stakeholders for more informed sizing. You can also revisit/track old sizings/collections and regenerate the analysis/graphs for the data at a later point in time. Collector Portal Navigation Login Open collector.nutanix.com in your browser. Click My Nutanix Login to logon to the application. You can use your Nutanix login to connect with the application.  Sidebar After a successful login, you will see the sidebar on the right side of the Collector Portal dashboard . The sidebar has important information such as the number of projects and collections associated with the user who is logged in. The sidebar

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ShvetaD
Nutanix Employee
Alona
Nutanix Employee
AlonaNutanix Employee
posted in How It works
Snapshots - so simple and yet so complicated - FAQ

I find that the simplest things in life are the most complicated. Snapshot is one of those things, I believe. It is something we, administrators, do not hesitate to use and yet, not many undersand what it is or how it works. Below are a few things out of many. What is a snapshot? A snapshot is a difference. When a snapshot is created its initial size is zero. That is because initially there is no change to capture. Original data is locked. It can be read but it can’t be altered. All the changes are written to the snapshot. That is why and how you can recover the data before the snapshot - because it is still there and is still intact. What is a VM snapshot for? It is a recovery point that is meant to be kept for a brief period of time as opposed to backups that can be stored for months, years or even decades. Why does a VM snapshot file grow in size? Because the changes to the original data keep coming in. Files on the VM are edited or deleted, new files are created. The longer the

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Alona
Nutanix Employee
N
newlinksolutionsAdventurer
asked in Installation & Configuration
Hybrid cold/hot data ratio non disk size dependent

Hello team, I hope that someone can explain to me why, looking to sizer’s recommandations about hybrid configuations, SSD/HDD ratio is not size dependent but form factor dependent. Basically if you select 2 SSD and 3.5”HDD then a minimum 1:1 ratio is possible (SSDx2 + HDDx2) but if you have have SSDx2 and 2.5” HDD then the minimum ratio is 1:2 (SSDx2 + HDDx4). Is it because 3.5” HDD SAS or SATA are usually faster than 2.5”? It’s not about size or hardware vendor, recommandations seems to changes according to the disks form factor only

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