Installation & Configuration

Hi, everyone I’m trying to use LCM to update firmware of host machines on my cluster. It all went well until the post action phase. Error message said: ‘Operation failed. Reason: LCM failed performing action reboot_from_phoenix in phase PostActions on ip address xx’. I searched the KB and found KB9177，but it’s about ‘Mixed Hypervisor cluster‘, my cluster uses solely AHV so it doesn’t applied. Anyway I still tried to follow the KB9177’s suggestion and upgraded my cluster’s foundation to 4.5.3 and retried the LCM firmware update process on another host but still got the same ‘ LCM failed performing action reboot_from_phoenix’ error. I used the workaround provided in that KB to make the affected two hosts’ CVM out of maintenance mode. It works and the cluster is back to normal. Then I logged on to the affected hosts’ IMM and found out that actually the primary IMM2 firmware has already been updated by the LCM( the backup IMM2 firmware is not upgraded), and when I go to the LCM section

Hello, for LCM updates I see that pre-checks require DRS in fully automated mode. It’s possible to perform LCM updates without DRS in fully automated mode (in the event that a customer does not have DRS in his licenses) ? Thanks Manuel

Hello, We have a cluster with 4 nodes and I will perform the update from 5.9.4.2 to 5.10.10.1. a some minutes ago, I see that my cluster have a disk space problem and the resilience board is red with the “not resilience” information. In this case I will have a problem when perform the AOS upgrade? I not have time to resolve the space issue now…  Please, send me any information.

I’m trying to setup a new bridge (br1). After ssh to the Nutanix AHV,  I continue with input “ssh root@xxx.xxx.xxx.xxx” to get to the CVM,  it ask me for a password.  Is there a way to change/ continue with a different logon name as well at that? The password I input is being denied due a different username for the CVM.

Hello, comunity I’m been trying to figure out why the configuration with RF2 & N+1 reserves more capacity than just RF2. I understand that with RF2 all the data is duplicated along the cluster and the failure of one node is tolerated. In my scenario I have a 3-node cluster with 34TiB of effective capacity, so with RF2, I would have only 17TiB, everything is clear until that point. But the extent store assuming RF2 & N+1 gives me 11.3TiB, which is 1/3 of my available capacity. So...the question is: If I reserve capacity, by tripling all the data, that is for tolerate 1 additional node failure besides the 1st one (tolerated by RF2)?  A silly conclussion would be that with RF2 & N+1 the cluster is able to tolerate 2 nodes and continue operating just with one node, but I know that is not posible. So, why assuming RF2 & N+1 reserves more TiB’s than just RF2? Please, I would appreciate the help. Thanks in advanced!

Dear all We run 2 Clusters with each 3 ESXi and 2 AHV Storage-only Nodes successfully.  Now I want to get rid of VMWare, but all vms were built with vmware, of course I see them in prism. Did anyone ever just deinstall ESXi and replaced it with AHV in a running environment? Alternatively I could move all urgent vms to one Cluster and than install Nutanix from scratch and afterwards migrate the vms to the Nutanix only Cluster. thanks and best regards, Claudia

Should you see message similar to “Third-party backup snapshots are present in the cluster longer than the configured threshold.” and wonder where it comes from keep on reading — you’re in for a treat!The NCC health check aged_third_party_backup_snapshot_check checks the cluster for dangling third-party backup snapshots that may be present for a protection domain. If a third-party backup snapshot has existed in the system for longer than the specified period, this check will raise an alert. These backup snapshots are snapshots that are generated from 3rd party backups (Veeam, Commvault, Rubrik, HYCU, etc.).The check passes if third-party backup snapshots are not present in the cluster longer than the configured threshold. The default threshold is 7 days, but this threshold value can be modified. The threshold can range from 1 day to 365 days.Administrators may specify how long a third-party snapshot is expected to be present in the cluster through Prism UI. This check is based on the b

As the title said, does anyone know about this interface is used for?

We are planning to connect 2 stacked Catalyst 9300 to a Nutanix Cluster. While doing research I found a document recommending the Nexus 9300 and specifying that the Catalyst 9300 wouldn't meet requirements for the Data Center. There was no reasoning for this and I would like to know why the Catalyst 9300 switches are not recommended. Thanks in advance, Ingrid

Nutanix Hyper-Converged Infrastructure brings together the power of compute, storage and networking in just one node.   There might be situation where you’ll get queries in regard to mixing different components in NX- Hardware   For example   Are there any NIC restrictions?   Are there any Storage restrictions?   Can I have a hybrid SSD/HDD node and all-SSD node in the same cluster?   Are there any restrictions related to the DIMM model and placement?   What all hypervisors are supported with different Hardware models?   If the above-mentioned questions are baffling you, the following product document can help you clarify the doubts and give more information regarding product mixing restrictions   Product Mixing Restrictions

Hi Does anywhere can be find the ESXi version and AOS version interoperaability or compatibility? I found that in the foundation iso_whitelist file, there is some ESXi version has min_nos requirements. but differnet OEM partner has different requiremnts. But from VMware compability web site. ESXi is compatibility with most of the AOS version as the link. For example: ESXi 6.5 U3 --Dell has no min_nos requirements --Lenovo min_nos is 5.10.6 --Fujitsu has no min_nos requirements --HPE min_nos is 5.10.7 So if it is old enviroment, Does the ESXi version must meet the AOS version requirement in the whitelist?

VDi (Virtual Desktop Infrastructure) is one of the earliest applications that was used in hyper-convergent  systems. The closer the storage to the cpu and memory the better the performance. The plugin provides the means for getting more information on Citrix director from Citrix generated desktops running on a Nutanix cluster. Citrix also has its own plugin that can be used. This conversation is about nutanix provided plugin and how to install it. Nutanix AHV Plug-in for Citrix Director creates customized reports for the following VM-level performance statistics: VM IOPS VM I/O Bandwidth VM Average I/O Latency Nutanix AHV Plug-in for Citrix Director gets the data directly from the Nutanix AHV hosts to generate performance statistics of the virtual machines. The link: https://portal.nutanix.com/#/page/docs/details?targetId=AHV-Plugin-Citrix-Director-Installation-Guide-v1110:AHV-Plugin-Citrix-Director-Installation-Guide-v1110 have step by step instructions for installation of this plugin

We have many clusters in HCI . Now we want to locally segregate prod VM n NOn -prod VM in a cluster . how can we do ? Do we have concept of resource groups?

Let's say you just upgraded your AOS to the latest version and now  you are receiving this alert in your environment.   "Disk space usage for root on Controller VM has exceeded 80%"   The Nutanix CVM is what runs the Nutanix software and serves all of the I/O operations for the hypervisor and all VMs running on that host.   Not sure how to bring the root partition on the CVM below 80% and which document to consult to?   The following knowledgebase articles might help you in resolving the alert.   KB-7604 KB-6637

Let's say for example we have multiple VLANs in our environment to logically segment the traffic.    We need to configure the network interface accordingly as we might need a VM to be VLAN aware.    Before understanding the method to configure this, let us understand the difference between trunk and access modes.   An access port sends and receives untagged frames (i.e. all frames are in the same VLAN)   A trunk port supports tagged frames and thus it allows to switch multiple VLANs.   Do we have a method to configure trunk mode in a NIC  The following article mentions the steps to safely change a NIC mode of a VM to trunk mode. How to change NIC mode (Access, Trunked)

Hello, Which 10G Switches and SFP+ modules are supported with NX-3360-G7 nodes & C-XCVR-SR-SFP+ modules?

I have two upgrade options showing in my Nutanix clusters. One is for a 5.15 release and the other is for a 5.16 release. I'm currently on a 5.11.2.3 release and generally keep my clusters updated to the latest release possible. Normally I'd go to the 5.16 release and not ask this question, but I heard from someone that 5.16 might have some problems in it. Would I be safe upgrading to the 5.16 release, or would it introduce instability into my environment? 

Hi everyone, I’m looking for your advice please for ESXi-based Nutanix clusters with hybrid storage. Question is regarding the placement of ESXi persistent scratch. With traditional architecture, the advice normally was to configure /scratch to be on a shared datastore, not a local one. The argument was that in case of a host failure, the logs will still be available from other hosts. With Nutanix, I can see the options as 1) leave the default, on vfat partition on SATADOM/M2/BOSS; 2) in a folder on local VMFS datastore where CVM is (same storage device though); 3) on a shared datastore, i.e. on DSF. What is the Community (best) practice with ESXi /scratch in Nutanix environment? Please kindly share your advice and thoughts. Thank you.

Two weeks ago I’ve upgraded our two clusters to AOS 5.15 . After that, both clusters began to receive constant warnings for root partiton space usage high(exceeded 80%) on almost all CVMs. Below is the result of ‘df -h’ on one of the CVMs:  Filesystem      Size  Used Avail Use% Mounted on devtmpfs         18G     0   18G   0% /dev tmpfs           512M     0  512M   0% /dev/shm tmpfs            18G  1.2M   18G   1% /run tmpfs            18G     0   18G   0% /sys/fs/cgroup /dev/md1        9.8G  7.4G  1.9G  80% / /dev/loop0      240M  2.3M  221M   2% /tmp /dev/md2         40G   23G   17G  57% /home tmpfs           3.6G     0  3.6G   0% /run/user/1000 /dev/sdg1       5.5T  1.4T  4.0T  26% /home/nutanix/data/stargate-storage/disks/                                                                                                                                                                                                                                             17Q0A01WFB9D /dev/sdh1    

I am deploying nutanix at one of our customers site but unfortunately now he has 2 Switches with 1 GIG ports so is it doable to remove the 10 GIG from the bond and rely only on the 2*1G ports ?   Model used (NX-1365-G6) thanks in advance

I am using Nutanix on VSphere 6.5, and am affected by the 100% Memory usage alerts as described in KB article 000004465. I would like to create a folder in VSphere called Nutanix CVMs, which will not have the memory alerts enabled, and would like to move the CVM VMs in to this folder. Can anyone advise whether it’s safe to move a CVM VM in to another folder after is has been deployed? Part of me thinks this is a safe / normal procedure, as I’ve done it countless times with normal VMs. However, due to the complex nature of hyper-converged infrastructure and CVMs I understand I need to be very careful.   Thanks for your help   Jason  

Hi,  My CVM is reporting low on disk space and trying to cleanup. I tried to follow the KB1540 and noticed the logs directory needs to be clean up. Its consuming around 8.1G the rm cmd in article dont see to apply for logs folder. Any suggestion on how to free up space under logs safely? Can i winscp and delete the logs files?   Thanks CT

Hello, Are these any docs available which shows the setup between the Nutanix cluster and Prometheus/Grafana, similar to the one we have for Nagios https://next.nutanix.com/how-it-works-22/monitoring-nutanix-with-nagios-4500   Thanks.  

Hi, Does anyone know exactly how many nodes can I install by Foundation 4.5 at one time? As I am going to write some internal docs related to Foundation so I do want to know.   Thanks.

What is Foundation? Foundation is a Nutanix provided tool leveraged for bootstrapping, imaging and deployment of Nutanix clusters. The imaging process will install the desired version of the AOS software as well as the hypervisor of choice.   By default Nutanix nodes ship with AHV pre-installed (depending on your country), to leverage a different hypervisor type you must use foundation to re-image the nodes with the desired hypervisor. NOTE: Some OEMs will ship directly from the factory with the desired hypervisor.   The figure shows a high level view of the Foundation architecture:     To use a different hypervisor (ESXi or Hyper-V) on factory nodes or to use any hypervisor on bare metal nodes, the nodes must be imaged in the field. Foundation service is included on CVMs and can be accessed at port 8000 on a running CVM that is not in a cluster, or if the CVM IP address is not yet configured the Foundation Portable software can automatically discover the nodes. Check out the prism web