Installation & Configuration

Life-cycle Manager has made the life of every Nutanix Admin easy by providing a 1-click approach to upgrade the firmware and in the latest version, the hypervisor seamlessly.     Let’s consider a scenario, where you went ahead with an LCM upgrade but noticed it failing as some pre-checks failed.     What are these pre-checks?     Before any upgrade, LCM runs a series of pre-checks to confirm the cluster stability and if all the prerequisites are fulfilled before  proceeding with the upgrade.   Do we have a document listing all the pre-checks and their resolution?    The following document lists all the pre-check, their description and resolution. This might come in handy if we are trying to troubleshoot as to why the LCM pre-checks have failed.   KB-4584   Want to know more about Life Cycle Manager and its features?  Give the following document a coffee read!    LCM Guide 

Hi everyone,   I m new to Nutanix and have just deployed my first cluster. I did all the updates I could find in Upgrade Software Settings. It brought the nodes up to 5.11.2.1 . I tried to run the checks again and it shows no available versions. I saw the notice for the release of 5.16 so I downloaded the manual update binary file and meta file.   When I try to update it says unsupported.  Edit:   NOT SUPPORTED Current version was released after the Target version was released. Upgrading to Target Release version is not supported in this case.     I check the support upgrade path wizard in My Nutanix and it says the 5.11.2.1 is newer then the 5.16 yet they were released the same day!? The Upgrade path shows that if I had the 5.11.2 I could update to 5.16 but not 5.11.2.1 ?? Will Nutanix have an update path for this? or am I stuck for a while?   thanks everyone.   Scott  

Hello, first time to use IPMI. Need to mount ISOt to re-install ESXi. So I’m trying to launch Direct Console from IPMI (note that I just reinstalled Java). but still not launching. Any idea? Nutanix Support wasn’t helpful.

There can be legitimate cases where access to external storage, such as massive tape libraries, massive disk archives is needed to some, but not all VMs running in a Nutanix cluster.  These VMs would be ideally under the AHV hypervisor, but is ESXi is an acceptable alternative.  These external storage systems would likely support 10GbE iSCSI (and faster) and/or 8 gbit fibre channel or faster. I understand that supporting such external access would make the VM “special” and would restrict VM mobility to other specific nodes that were configured for similar external access. The mobility issues are a later discussion, if external storage access is possible. If the external storage was a NAS device, running NFS and/or SMB, I believe it would be straigntforward … just define the external IP address in the VM, and access the data from the VM.  The same technique could be used for external iSCSI devices, for Ethernet iSCSi.   In many cases, if the external storage needed very high performance

I have an opportunity to acquire some retired Nutanix memory.  The retired memory is  NX-1065-G5 nodes and our Cluster is NX-6035-G5.  From what I have been able to trace they appear to use the same memory modules.  Can anyone confirm this?

Let’s say you want to add a node to the cluster, now, the AOS version in the new node to be added should be the same for quick expansion. To do so, you need to use a phoenix image bundled with AOS or in some cases, AOS + AHV bundled image to perform imaging in one go.  Instead of creating a new case with support and save your time too, the fastest way would be to create one on your own. There are 2 ways to do so:- 1. Creating a Phoenix ISO via CVM 2. Creating an ISO by Using a Foundation VM (if option 1 cannot be performed) To know in detail regarding how to go about the above-mentioned ways, take a look at KB-3523.

Hello, after new install single-node cluster, i dont change pass for root user. # passwd root bash: passwd: command not found what am I doing wrong?

The business is growing, and this means more users, more virtual desktops, and you’re likely going to need more RAM. You could add a node or two, but what if rack space isn’t readily available?  The existing nodes may still have room to grow. How do we add memory to nodes in a Nutanix cluster? The process for upgrading memory is covered in this KB: HW: Upgrading Physical Memory You should understand the restrictions and have a plan before purchasing DIMMs. If you need to review supported memory configurations, such as what DIMM capacities are supported and which slots to fill, check the NX Series Hardware Administration Guide for details. There are restrictions on mixing memory in the same node. You can’t just add any DIMM that fits into an existing node, but if each node has some slots available there are options to move forward. You could purchase new DIMMs to populate one node and complete this replacement first, and then use the removed DIMMs to add memory capacity to other nodes i

Hi,I had a problem with the NTP server configured on the Nutanix cluster, unintentionally changed the date to 09012020 instead of 01092020,  the point is that after solving that problem, now the cluster reports to me Critical alerts dated September 1, 2020. The date of the NTP is already corrected, but Web Console  shows some critical alerts, but those alerts are not shown with ncli, but  are shown with Alert tool. I have try to aknowledge and  resolved them, but they are NOT eliminated from alert_list.Does anyone know what I can do so that the web console no longer shows them?

I am reimaging my lab cluster after we had some serious problems with a conversion to AHV and rollback to ESXi.  2 of my 3 nodes reimaged fine, once I put a /firstboot directory in to the existing ESXi hosts.  My 3rd node is losing track of where the firstboot directory would be.   From the foundation log: 20200221 11:40:17 ERROR Command 'scp -i ~/.ssh/id_rsa /tmp/tmp.gkI7z6j7XG/nutanix_provision_network_utils-1.0-py2.7.egg root@192.168.5.1:./vmfs/volumes/4d501d79-cff63899-7951-75210fae7516/Nutanix ./vmfs/volumes/5e4c3359-4b398980-cc34-ac1f6bb9dd8a/Nutanix/firstboot/nutanix_provision_network_utils-1.0-py2.7.egg' returned error code 127 stdout: stderr: FIPS mode initialized bash: line 1: ./vmfs/volumes/5e4c3359-4b398980-cc34-ac1f6bb9dd8a/Nutanix/firstboot/nutanix_provision_network_utils-1.0-py2.7.egg: No such file or directory 20200221 11:40:17 ERROR Failed while copying file /tmp/tmp.gkI7z6j7XG/nutanix_provision_network_utils-1.0-py2.7.egg to host with error Command 'scp -i ~/.ssh/id_r

It happens to the best of us. We are human beings and we make mistakes. Sometimes it means that we forget or lose root passwords to one or more of our AHV hosts.   There are two ways out of that situation. Log into the AHV host from CVM using the host's local IP address. Make sure that you are logging into the CVM of the problematic host. Change root password.  Re-image the AHV host. AHV Administration Guide: Changing the Acropolis Host Password  KB-7068 AHV | Root account password reset   Additional reading: .NEXT Modifying passwords in Nutanix Environment Nutanix Security Guide v5.16

The Nutanix Support portal includes a compatibility matrix available from the Compatibility Matrix link. You can filter and display compatibility by Nutanix NX model, AOS release, hypervisor, and feature (platform/cluster intermixing). Nutanix recommends that you consult the matrix before installing or upgrading software on your cluster. Do you want to know if you can mix different types of CPUs, memory, disks or hypervisors in your Nutanix environment?  Start with this documents that provide the answers you might be looking for, like: Hardware Restrictions: mixing different Nutanix CPU families Storage  restrictions: Mixing all-SSD and hybrid SSD/HDD Mixing NVMe and SSD/HDD Encryption restrictions DIMM restrictions: Mixing DIMM Types Mixing different  DIMM Capacity Mixing different  DIMM Manufactures Mixing different DIMM speed Hypervisor restrictions You can get all the answers in this document : Product Mixing Restrictions In case you need memory specific repla

There are instances where it is necessary  to reseat a node for troubleshooting purposes.   So what exactly is node reseat?   Node reseat is a process in which we stop all the services in the node, put the CVM and Hypervisor in maintenance mode and then physically detach the node from the block and re-seat it.   A node re-seat is sometimes required in troubleshooting related to the power supply as during re-seat of the node the voltage drops to zero.   So do we have a step by step guide explaining the process of the reseat of a node with video tutorials on how to physically remove a node?   Of course, we do   Go through the knowledge base article to understand the process of node reseat.   KB-3182 Reseating a Node in a Cluster   Need some guidance or still confused? Drop a comment and let us start a discussion.  

Your hardware lease period is expired, and you have tried to destroy the cluster to clear the data off the cluster, but the cluster was not destroyed completely? Successful cluster destroy requires to have a clean environment. Clean out cluster config and cluster data. This operation will completely erase all data and all metadata, and each node will no longer belong to a cluster.  There are some situations where cluster destroy does not succeed, especially if cluster destroy is executed while one of the nodes is down. In that case please follow this document  KB 3436 [Forcibly Destroying the Cluster Using the .node_unconfigure File] which can help you further to clear the data from the cluster.  

My stargate contimues to restart. and I cannot find anyting in the GUI to indicate what it my be. When I get in the cli, i see the cluster says all four nodes are up. i try to ping 192.168.5.1 and the icmp request never completes. pinging all other ip’s work as expected. my esx is 6.5u3 aos is 5..5.5 my NCC is 3.7.0.1 foundations is 4.3  

Hi there, I am new with Nutanix and I have a doubt about Acropolis licensing. We have 3 nutanix nodes with Acropolis Start Edition installed. Yesterday, my PRISM console report a License Feature Violation. Looking at https://www.nutanix.com/products/software-options , the only thing that I saw that could be wrong in my configuration was a Volume Group created for a test. Just to be sure, in an Acropolis Start Edition can we create volume groups or this option should only be used in PRO and ULTIMATE editions? The alert don’t give me more information about which feature is violating the license. Thanks in advance for the help! BR, Thelmo    

Hello everyone, I'm having problems with the cd-rom assembly in all my VMs, I can't add it with an * .ISO image, and I can't remove or disassemble the existing cd-rom, can someone help.

Working using CLI is easy, simple, elegant and fast. Every administrator loves scripting and automating tasks using the command line. Nutanix makes Management tasks related to virtual disks easy, simple and efficient using CLI. So, what are the situations in which you might need to perform VM Disk management actions if you’re an administrator? You created a VM with a disk of 250GiB and now you need to increase it to 500GiB What if you need to increase the size of a VM Disk? Created a Disk but now need to clone it to different VMs! Need to create an image from a VM disk? Created a VM with the wrong BUS Type! Do we need to change the index of IDE disk? We all have faced a situation in which we might need to insert an ISO to a CD ROM or eject a CD ROM We have created a Volume Group and now need to manage the disks in the VG Most of these actions can be performed using the Prism GUI but what if we are more interested in CLI approach and want to automate these day-to-day admin tasks Do we

Hi Guys,   i have some questions, first, can we enable flow on ESX hypervisor on nutanix? i have same question with calm on esxi and i get the answer we can enable calm on esx based on nutanix KB, but how about flow? can we enable/using flow on top esx hypervisor?  and just courious, anyone have table comparation about feature nutanix running on ahv, esx, hyperv?

Howdy,   I’ve searched through all corners of the web, but still didn’t find a clear answer to this question: can Nutanix prioritize packets and/or traffic in OVS? And, if yes, is there some online how-to that I can refer to to learn how to do that?   Thanks in advance,

Howdy, I already know that Debian is an unsupported Linux distribution for using NGT on. But I still *must* try NGT on it... how can I force the instalation of NGT on Debian?

 Hyper-V Network Cheat sheet.

If you are trying to install any third party software, specially Antivirus packages on Nutanix AHV hosts or Nutanix CVMs please consider the following: As for running antivirus (or any third-party software) on the CVMs and AHV hosts, this is not something that we support or can allow. The CVM should be treated as a network appliance, with access controls put in place to ensure that only authorized access is allowed, and kept up-to-date with the latest CVE patches. Installing any packages on the Nutanix CVMs is unsupported. Moreover, installing packages on the CVMs will void the support. In general, an antivirus being installed on the Nutanix CVM is not recommended as it can have ill effects on performance and cause negative impact on the stability of the system. However you can install antivirus on HYPER-V and VMware hosts, just follow these articles: KB 2360 Antivirus on Nutanix on vmware. KB 5153  Antivirus on Nutanix Hyper-V Nodes. If you like this content, consider clicking the -

We all have encountered file system corruption in our environment and sometimes it can bring down the entire production architecture.  Do we have a mechanism to proactively check for File System corruption in a Controller VM irrespective of the hypervisor? Nutanix Cluster Check has a specific check “fs_inconsistency_check ” to look for EXT4-fs error/warning in system logs periodically and inform the end-user.  Need more information regarding the Check? Try giving the following KB article a read. KB-8514 So, what should we do in case NCC Health check reports the error? The article mentions steps to identify if it is a false positive or we need to reach out to Nutanix Support with a particular log bundle. KB-8514 Need more help regarding an NCC Health check or confused regarding the same? Drop a comment and let’s start a conversation.  

Hi AllAfter upgrading the NCC version, I get this message CVM was renamed after installation - I haven't changed it!  The recommendation is bizarre - Rename CVM back to its original name.  CVM name is noncofigurable by the end user.So if it is non configurable , what changed it and how do I get it changed back ?  Or is it just having an identity crisis?Is there a fix?