Topics started by rohan.saksena-55595

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rohan.saksena-55595Nutanix Employee

posted in Installation & Configuration

Microsoft Failover Cluster (MSFT) on Nutanix

With AHV-20190916.189, Nutanix supports Directly Attached Volume Groups in a Guest VM Cluster. On AHV clusters, you can create a guest VM cluster by directly attaching a volume group to guest VMs.After you attach a volume group to guest VMs, vDisks appear as SCSI devices to the guest operating system and you do not need to set up any in-guest connections when you are creating a guest cluster. If you directly attach volume groups to guest VMs, you can seamlessly share vDisks across VMs in the guest cluster.You can directly attach a volume group to guest VMs to create the following guest clusters:1. Microsoft Failover Cluster (MSFT)2. Red Hat Enterprise Linux (RHEL) Cluster For more details, refer to following:Guest VM Cluster Configuration (AHV Only)Create Guest VM Clusters by using iSCSIAcropolis Release Notes

rohan.saksena-55595Nutanix Employee

posted in How It works

Data Protection and Recovery with Prism Element

Protection Domain–Based Data Protection is configured using Prism Element. Nutanix supports several types of protection strategies including one-to-one or one-to-many replication. These strategies are as follows:Per-VM Backup. The ability to designate certain VMs for backup to a different site is particularly useful in branch office environments. Typically, only a subset of VMs running in a branch location require regular back up to a central site. Such per-VM level of granularity, however, is not possible when replication is built on traditional storage arrays. In these legacy environments replication is performed at a coarse grain level, entire LUNs or volumes, making it difficult to manage replication across multiple sites. Selective Bi-directional Replication. In addition to replicating selected VMs, a flexible replication solution must also accommodate a variety of enterprise topologies. It is no longer sufficient to simply replicate VMs from one active site to a designated passiv

rohan.saksena-55595Nutanix Employee

posted in How It works

Boot Over ISCSI

Volumes support ability to boot an Operating System over iSCSI for physical servers. In this configuration, a host can start a supported Operating System from a LUN instead of a Local Disk instance.This procedure describes how to configure Network Adapter BIOS Settings to enable this feature.Important Points:Refer to Intel Ethernet Adapter Vendor Documentation for more details about Intel iSCSI Boot Configuration. According to Intel, we might be able to configure these settings through Adapter's Properties > Data Options Tab in Microsoft Windows Device Manager. Check Volumes Requirements and Supported Clients for a list of the supported network hardware and clients. Refer to Enable Nutanix Volumes and read about the procedures to perform on the Nutanix cluster. Before performing an iSCSI target discovery of the Nutanix cluster, configure BIOS boot settings for the network adapter as described in these stepsFor Step-By-Step Guide, Refer to Link

rohan.saksena-55595Nutanix Employee

posted in How It works

How to Identify Next Version to Upgrade

Are you still wondering about the following questions?To Which Version of AOS should I upgrade to from my current version? Will it be 1-Click Upgrade or not? What are the EOL versions for AOS, Nutanix Files or Prism Central? What is my software compatibility?Answer to above queries and many other queries is one single Link i.e. Upgrade PathsHere are some snapshots from Tools:Image 1 Image 2Image 3

rohan.saksena-55595Nutanix Employee

posted in How It works

Nutanix BMC and BIOS

Nutanix platforms use a baseboard management controller (BMC) and basic input/output system (BIOS) to control the motherboard.The Nutanix BIOS contains optimized power management settings by default. Please do not change Power Management Configuration settings in the BIOS. Nutanix does not support custom power management configurations, and changing the power management settings in the BIOS can cause unpredictable behavior.Procedures updating the BMC and BIOS:1. Upgrade through LCM2. Manual UpgradeBMC: Nutanix BMC Manual Upgrade GuideBIOS: Nutanix BIOS Manual Upgrade GuideNote: Always upgrade BMC before BIOSRelease Notes: G6 And G7 Platforms

rohan.saksena-55595Nutanix Employee

posted in How It works

Cluster Maintenance Utilities (CMU)

Nutanix provides a suite of utilities for cluster maintenance, including tools and scripts that help you use CVM and Prism resources more efficiently.Latest Version of Cluster Maintenance Utilities is CMU 2.0.3Procedural Notes:Update CMU with the Life Cycle Manager, starting with LCM version 2.3.4. Nutanix supports CMU with AOS 5.10 and later, and with both Prism Central and Prism Element.New Features:Beginning of update Support for CMU Scavenger tool for Cluster Cleanup (Scavenger is not a cluster-level service. It operates per VM)CMU 2.0.3 Release Notes

rohan.saksena-55595Nutanix Employee

posted in How It works

How to Troubleshoot Remote Support Tunnel Error

In some scenarios, when you enable the remote support tunnel, it’ll tell you that it has been temporarily enabled but the status will show “disabled”.To troubleshoot, you can start by checking Basic IP connectivity to nsc01.nutanix.net or nsc02.nutanix.net. If that times out, then it is either a DNS resolution problem or a firewall issue.Check the firewall rules of your system to allow outbound connections to nsc.nutanix.com on port 80 or 8443.For more details on troubleshooting, check KB-1044

rohan.saksena-55595Nutanix Employee

posted in How It works

Hardening Instructions for AHV and CVM (NCLI)

Hardening is the process of securing a system by reducing its surface of vulnerability, which is larger when a system performs more functions; in principle a single-function system is more secure than a multipurpose one. Reducing available ways of attack typically includes changing default passwords, the removal of unnecessary software, unnecessary usernames or logins, and the disabling or removal of unnecessary services. There are various methods of hardening Unix and Linux systems. This may involve, among other measures, applying a patch to the kernel such as Exec Shield or PaX; closing open network ports; and setting up intrusion-detection systems, firewalls and intrusion-prevention systems. There are also hardening scripts and tools like Lynis, Bastille Linux, JASS for Solaris systems and Apache/PHP Hardener that can, for example, deactivate unneeded features in configuration files or perform various other protective measures. We can implement Security Hardening features for Nutani

rohan.saksena-55595Nutanix Employee

posted in How It works

Nutanix Integration with ServiceNow

Nutanix has worked closely to build integrations between ServiceNOW’s SaaS offering andNutanix infrastructure with the following areas of focus:ServiceNOW CMDB integration for Nutanix hyper-converged infrastructure discovery and modeling Nutanix Alert Integration with ServiceNOW Events and Incidents and remediation via XPlay ServiceNOW Request Management and Fulfillment for Services Hosted on Nutanix via CALM plug-in For More Details: https://www.nutanix.com/blog/nutanix-integration-with-servicenow

rohan.saksena-55595Nutanix Employee

posted in How It works

Nutanix Cluster Check (NCC)

Nutanix Cluster Check (NCC) is cluster-resident software that can help diagnose cluster health and identify configurations qualified and recommended by Nutanix. Depending on the issue discovered, NCC raises an alert or automatically creates Nutanix Support cases. NCC can be run provided that the individual nodes are up, regardless of cluster state.NCC actions are grouped into plugins and modules:A Plugin is a purpose-specific or component-specific code block inside a module, commonly referred to as a check. A plugin can be a single check or one or more individual related checks. A Module is a logical group of common-purpose plugins. It can also be a logical group of common-purpose modulesNCC Output: Each NCC plugin is a test that completes independently of other plugins. Each test completes with one of these status types:PASS FAIL WARN INFO ERRNCC can be executed via:a) GUIb) CLINutanix Cluster Check (NCC) 3.10 Guide Reference LinkLogbay Tags Reference Guide for Nutanix Cluster Check (

rohan.saksena-55595Nutanix Employee

posted in How It works

Manual Firmware Updates

Nutanix recommends that you use the Prism Life Cycle Manager to perform firmware updates. However, firmware must be updated manually if:The component is located in a single-node cluster, OR The component is located in a multi-node cluster, but the hypervisor the cluster is running does not support LCM firmware updates.Manual Upgrades:Manually Updating SATA DOM Firmware Manually Updating M.2 RAID Hypervisor Boot Drive Firmware Manually Updating the BMC and BIOS Manually Updating HBA Controller Firmware Manually Updating Data Drive Firmware Manually Updating NIC FirmwareFor more details: https://portal.nutanix.com/page/documents/details?targetId=Hardware-Admin-Ref-AOS-v5_18:bre-manual-firmware-update-c.html

rohan.saksena-55595Nutanix Employee

posted in Nutanix Cloud Clusters (NC2)

Nutanix Clusters and Licensing

Licensing is an important and integral part of Nutanix Clusters. All Nutanix Software Products does not require a license. Nutanix provides these products and their features without requiring you to do anything license-wise:Nutanix AHV Karbon (enabled through Prism Central) Prism Central (Prism Pro, however, requires a license for its advanced features, but you can manage registered Prism Element clusters with the base Prism Central software) Framework and utility software such as Life Cycle Manager (LCM), X-Ray, and Move FoundationViewing License Status: The most current information about your licenses is available from the Prism Element or Prism Central web console. It is also available at the Nutanix Support Portal from the Products link. You can view information about license levels, expiration dates, and any free license inventory (that is, unassigned available licenses)Displaying License Features and DetailsRequirements and Considerations for LicensingLicensing Guide

rohan.saksena-55595Nutanix Employee

posted in Nutanix Cloud Clusters (NC2)

Nutanix Clusters on AWS

Nutanix Clusters deliver a hybrid multi-cloud platform addressing the need of a single platform, that can span private, distributed, and public clouds. This will help in managing traditional and modern applications using a Consistent Cloud Platform.Nutanix Clusters has features like:Operational Simplicity Seamless Application Mobility Cost EfficiencyThe above features help to run applications in private or multiple public clouds and reduce the operational complexity of migrating, extending, or bursting your applications and data between clouds.Nutanix Clusters extends the simplicity and ease of use of Nutanix Hyper-Converged Infrastructure (HCI) software, as well as the full Nutanix stack to public clouds such as AWS.We can Modify, Update Display, Hibernate, Resume or Delete Nutanix clusters running on AWS by using the Nutanix Clusters console.Release NotesKnown Issues

rohan.saksena-55595Nutanix Employee

posted in Move Application Migration

Nutanix Move – FAQs (Frequently Asked Questions)

Nutanix Move (a.k.a Move) is a cross-hypervisor mobility solution to move VMs with minimal downtime. Move supports migration from the following sources to targets, with first platform being the source and second platform being the target.VMware ESXi to Nutanix AHV VMware ESXi on legacy infrastructure to VMware ESXi on Nutanix Microsoft Hyper-V to Nutanix AHV AWS EC2 to Nutanix AHV AWS EC2 to VMware ESXi on Nutanix Nutanix AHV to AWS EC2Since infrastructure underneath platform is different, a small downtime is incurred during cutover from any of the preceding sources to targets.If this sounds Interesting, but you have a lot queries about this Amazing Solution i.e. NUTANIX MOVE.Relax…!!Here is link to answer most of your queries – Move FAQsFor more details refer to Move User Guide

rohan.saksena-55595Nutanix Employee

posted in How It works

VMware vSphere ESXi Hardening for Nutanix Clusters

When hardening ESXi Security, some settings may impact operations of a Nutanix cluster. Here are some recommended settings and their possible effect on a Nutanix cluster Summary of Hardening Requirements can be implemented in /etc/ssh/sshd_config as below:HostbasedAuthentication : noPermitTunnel : noAcceptEnvGatewayPorts : noCompression : noStrictModes : yesKerberosAuthentication : noGSSAPIAuthentication : noPermitUserEnvironment : noPermitEmptyPasswords : noPermitRootLogin : noMatch Address : x.x.x.11,x.x.x.12,x.x.x.13,x.x.x..14,192.168.5.0/24PermitRootLogin : yesPasswordAuthentication : yes For more details,

rohan.saksena-55595Nutanix Employee

posted in How It works

Importing Third Party Appliances to AHV

Do you want to import Third Party Appliances on AHV and wondering about following questions?Is my Third-Party Appliance compatible with AHV? What is supported and un-supported? How will I migrate my Appliance to AHV?We have multiple options that can be used to deploy Third Party Appliances on AHV. Third-party application vendors provide different applications or appliances that are certified to run on AHV.Here is the full current list of such applications: Compatibility MatrixNote: Software vendors can utilize this link to request an official software validation on AHVFor more details, refer to KB 9849

rohan.saksena-55595Nutanix Employee

posted in AHV Virtualization

Windows VMs unexpected crash / reboot on AHV Clusters with BugCheck Code 0x109 or 0xFC

Reported Issue: Nutanix has identified an issue Windows VMs may crash and reboot unexpectedly hosted on AHV Cluster with following bug checks: CRITICAL_STRUCTURE_CORRUPTION (0x109) ATTEMPTED_EXECUTE_OF_NOEXECUTE_MEMORY (0xFC) Solution: If you are experiencing above issue, Nutanix recommends upgrading to AHV Version 20190916.231 or later. These versions contain fix for this issue.For more details reference to KB 9351Nutanix Field AdvisoryAHV Upgrade

rohan.saksena-55595Nutanix Employee

posted in Virtual Desktop Infrastructure

Unidesk Best Practices

Is answer to following Questions: “Yes”Are you Implementing Unidesk on Nutanix ? Want to improve Desktop Power-On Time ? Help stabilize vMotion Operations ?Unidesk and Nutanix request that any customer deploying a Unidesk/Nutanix/vSphere implementation adopt these guidelines: Unidesk Best Practices

rohan.saksena-55595Nutanix Employee

posted in How It works

Early Detection and Error Handling related to Memory DIMMs

Are you still facing DIMM Errors which cause Un-Expected Node Reboots / PSOD and Degraded Node Situations ? And your answer to above question is : YES Solution: Nutanix has further improved the ability to detect problematic DIMMs and prevent unnecessary service disruption as a result of uncorrectable memory errors (UECC).Whats are DIMM Errors ? A Memory Error is an event that leads to the logical state of one or multiple bits being read differently from how they were last writtenAll About DIMM Errors Nutanix has rolled out a Field Advisory for early detection and error handling related to memory DIMMsNutanix Field Advisory #71