Installation & Configuration

What is Jumbo frames?  In computer networking, jumbo frames are Ethernet frames with more than 1500 bytes of payload, the limit set by the IEEE 802.3 standard. Jumbo frames can carry up to 9000 bytes of payload.   When should jumbo frames be used?  Use jumbo frames only when you have a dedicated network or VLAN, and you can configure an MTU of 9000 on all equipment to increase performance. A good general example of this approach is a separate SAN or storage network.   How to check your current MTU status? Run this command on one of your CVMs “NCC Health Check: cvm_mtu_check”. The command checks: On Hyper-V, validates if the MTU size is properly defined for eth0 and eth1 on the Controller VM On AHV, ESXi and Hyper-V, ensures the CVMs can communicate via eth0 with their configured MTU without upstream network fragmentation. For more information about this check, take a look at this article. How to Change AHV Host MTU for Jumbo Frames?  Check out this KB that explains the preparation and

Let's say that you have utilized the maximum recommended storage space in your cluster, you have an empty slot for another drive and you want to fill it to expand the storage capacity.   There are different types of drives out there, each of our platforms has it's own specifications and requirements.    To check which drives are compatible with your platform, choose your platform on this page and check out the data drives supported.    Your node will be in one of the following configurations:   1) Hybrid: A mix of SSDs and HDDs.  2) All Flash: can accept only SSDs and can contain only an even number of drives.  3) SSD with NVMe: only certain drives slots can contain NVMe, check the system specification via the link above for more information.   When adding more than one drive to a node, allow at least one minute between adding each of the drives. Check out my colleague Jon Kohler’s reply here where he provided some good caveats for adding drives. Specifically, increasing the hot tier c

Hello, I have a cluster up and running for almost a year now without any particular issues. I haven't logged into Prism for a long time and did so recent, and saw an alert on hat the cluster is not able to check NTP. I have them set for North American NTP servers. I think the real problem may be with Zeus, however, as when I SSH into one of the CVMs and almost any command (bur speciifally 'allssh root@192.168.5.1 date') I get: ================== error: ================= ================== Zeus ================= ================== configuration ================= ================== cache ================= ================== is ================= ================== not ================= ================== created; ================= ================== try ================= ================== again ================= ================== later ================= It is the same with any other command I try to run. Your insight is greatly appreciated.

How do we browse Nutanix containers from command line to check what is contained in it.

Hi I have confuse about the output of the AHV network command "mange_ovs show_interfaces", In the result, I can check the link status and speed of the NICs. But what is the meaning of mode ? I attached a snapshot as the following that give the output of a node in AHV which have 10Gb and 25Gb nic cards, but the mode all display 10000. What is the meaning of mode?

We just purchased Nutanix ( 2 Appliances , 3 nodes on each ) , we are planning to use VMware Enterprise plus on them. I've few questions, I would be more than happy if I get the answers: 1- if we used VMware, all Nutanix functions will be applied ? ( for example, if one HD failed, the data will be transfered to another Hard disk? ) 2- If I'm using 3 nodes, and I'm utlizing all the CPU and Memory and HD capabilities for all three, once one node goes down, how the VMs on this node will go to the other nodes while we are utlizing their full capacity? 3- if one node fail, the VMware VMs on this Node will be Automatically moved to another Node ? 4- In general, is there any difference if we used Acropolies or VMware ? will we get the same functions on Nutanix?

How can I reset a node to factory configuration after using the fundation process

Hi team,   i have question about prism central, if i enable feature like a flow ( as long i know, flow need prism central to enable and operate ), and i configure isolation or secure application for my vm,  what happen if my prism central down?

Greetings to all, After an update of the AOS from 5.8.2 to 5.10.5, the following alerts began to be received: IPMI sensor mismatch IPMI sensor data unavailable on host This is in a cluster with 3 Lenovo HX host, and all hosts have the same configuration when the cluster was created with the Foundations, I have already reviewed the access to the network to the BMC port and all the IPs respond and the users and passwords with correct. https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.resmgmt.doc/GUID-D247EC2C-92C5-4B9B-9305-39099F30D3B5.html This cluster uses the ESXi 6.5 hypervisor with vCenter 6.5, the information in the ESXi on the IPMI has already been added. The 3 CVM's respond to the ping between them and the BMC ports. Is there any parameter within the CVM that should be reviewed or from the PRISM console?

We are trying to setup SCOM Management Pack 2.4 with SCOM 2012 server. I have created LDAP (Windows Domain) account for Prism and IPMI access, i do able to validate with prism account but i could not IPMI. I am using AOS 10.5 with NX 1065 G6. I have tried to create IPMI local account and then tried to validate SCOM Management pack. It worked fine. I tried to validate with LDAP account but i am getting below error. for better administration i am trying to use LDAP. error validating ipmi account with "x.x.x.x" IP. Continue with next CVM Address? I have opened case with Nutanix. Just i want know whether Nutanix support to configure LDAP auth with SCOM. Any help will be much appreciated.

Hello is there a way to automatically install NGT guest tools without manually cdrom mounting process ? I want to use Packer to generate a centOS 7 golden image with preinstalled NGT guest tools thanks Gilles

Can existing cluster expand cluster new node with different subnet?     Thanks,   Hendra

Let's say you want to mix platforms, nodes or a sub-components in your cluster, what are the restrictions?  There are multiple components that you could mix, we took everything into consideration and explained it’s compatibility. In our portal, you can find the Hardware, OS, Storage, Encryption, DIMM, Hypervisor and vSphere restrictions. check out our Compatibility Matrix. For example, if you want to mix the hardware you can mix nodes that use different CPU families in the same cluster, but not in the same block.  e.g, a cluster can contain nodes from any NX generation, but a G6 block must contain only G6 nodes, a G7 block must contain only G7 nodes, and so on. For AOS, all the Controller VMs (CVMs) in a cluster must use the same version of AOS. Note: do not configure a cluster that violates any of the rules as it could lead to an unexpected behavior.  For the full documentation and rules check out this: https://support-portal.nutanix.com/#/page/docs/details?targetId=Hardware-Admin-Ref

Hello,I have a hybrid cluster (3 nodes) with 2x1,9TB SSDs and 10x4TB NL-SAS drives. Is it possible to replace all the disk in the cluster to make it all-flash? What would be the procedure? Thanks!!

Hi,   Foundation version 3.6-74ea4a6f download, Give me the link. (Standalone Foundation VM image for importing into VirtualBox or ESXi)   I am going to test with an old version Foundation(3.6-74ea4a6f). I don't have this version. Do you have a download link?   Thank you.

Can someone confirm the drive placement for SSD and the SATA drives in our Dell XC740xd servers?   On one cluster of servers, there are four SSD drives in bays 0-3 and in the other two clusters the SSDs are in the last four bays.    I have only seen the SSD drives in the first four drive bays.

Hi    I followed the steps in page to upgrade NCC. I can upgrade NCC by a single installer file (ncc_installer_filename.sh) successfully. But I cannot upgrade NCC by a compressed tar file (ncc_installer_filename.tar.gz). After extract the installation package, I type command to run the install script as below. It showed “Installation of ncc failed on node xx.xx.xx.xx” . I tired to run the script on each cluster, they generated the same error. How to troubleshoot the issue?   

is there any storage motion or container motion if i using ahv? and if not, how we move vm data from one container to another container?

Hi All, is anyone can tell me if AMD processors are supported on Nutanix CE i want to get a server with AMD processors and want to install Nutanix CE 

If you are anything like me then you prefer to figure out things by yourself instead of asking for assistance. While this is arguably the most efficient method of achieving a positive outcome, knowing where to find the right information as well as knowing that it exists is crucial.   Also, networking is complicated. Being fundamental, a mistake often makes a profound impact on the environment. How to create a virtual bridge? How to use manage_ovs command? How to change VLAN on VM NIC? How to add or remove VLAN on CVM and AHV host? How to configure LACP? How to isolate 1G NICs from the rest of the NICs?   The answers to the above and more as well as useful links – all can be found in KB-2090 AHV | Host and Guest Networking   Care to read more? Check these: .NEXT AHV Networking | Configuring Load Balancing .NEXT AHV Networking | Enable, Disable and Verify LACP AHV Networking

Only applies to AOS 5.15 and earlier versionsShould you wish to add NIC cards to your nodes there are several steps to follow to ensure that the process is successful. Verify that NIC card model is compatible with the hardware. In case of an NX platform the best way would be to contact Nutanix account team. Look for the documentation describing the process. Nutanix portal has a Hardware replacement section for instructions on all hardware component replacements for all NX platforms.  Once the card is automatically detected the bond and uplinks configuration must be updated using manage_ovs command from CVM. Nutanix portal: Hardware Replacement DocumentationKB-2090 AHV | Host and Guest NetworkingAHV Guide v5.16: Host Network Management 

Hi A remote site on AWS has been configured earlier. The time sync drifted too far but that has been fixed. The remote site in Data Protection has this alert "Remote site connectivity not normal." It is an AWS instance. The remote CVM IP address is 10.162.10.115. The host ipaddress is unknown, the firewall rules are fully open and replication seems to be occuring. There is a site to site VPN specificaly for this instance It looks as though the aWS remote site was never configured with the local cluster as a remote site which is what most of the webinars and documentation suggest. The IP address will not open a web page on http or https, the only communication available to the AWS node is SSH. How does the configurationof the remote site get completed or how do I get rid of this alert ?? Prisim: 5.6.1 NCC Version: 3.5.2 LCM Version: 1.4.2381 Nutanix 20170830.124 (in cluster, standard AWS instance) Thanks

hi, my client want to migrate all their sles 12 vm's from AHV to their ESXi farm (SAP Hana), currently i'm using the vmware converter but not success, got error cannot query live Linux machine.. i did try this --> https://acropolis.ninja/export-a-vm-from-nutanix-ahv-to-vmware-esxi/ but process stuck in qemu-img convert, and my cvm will give an error "CVM Services Restarting Frequently".. any suggestion to make more easier? cheers, paLee

I have been getting the below error when i select image configuration. When i do image.list i could see the images in acli. image.list Image name Image type Image UUID Nuatnix Xtract kDiskImage f3b18c26-e461-44af-b3e1-bc295078fe40 Virto-Windows kIsoImage ffcbbf1d-7380-4803-af4c-fd16fa6795f3 Windows_2016 kIsoImage 15ec4036-703b-471d-9887-3cb6a569426e [h4]Error occurred while getting image list[/h4]

Out Database team has been using ERA to deploy lab and test VMs. I noticed they are reporting ridiculous usage. Some of the machines report used more than half the total cluster storage and 3 times allocated. Any ideas?