Deployment Success

If you have a Nutanix cluster on VMware vSphere which has been through some hypervisor upgrades, your CVM’s virtual hardware version may be a bit out of date. The main requirement from the Nutanix perspective is that CVM virtual hardware versions should be the same across the AOS cluster, and this is checked by NCC. Still, since newer virtual hardware versions include security updates and sometimes feature updates or improvements from VMware you may want to bring this up to date. If you have an AOS upgrade pending, completing that upgrade would be the easiest route to solution. If you don’t have any AOS upgrade needed, please note Nutanix does not recommend manually updating the VM hardware version for CVMs. The recommended method is to allow virtual hardware version to update during an AOS upgrade. Do be aware, if you manually updated the virtual hardware version to 13 or higher on ESXi 6.5 before Patch 4, or 6.7 before Update 3, this could cause the CVM to fail to boot. There is a kn

Lets say that you want to monitor or modify your cluster by utilizing some of our REST APIs.  To view Nutanix REST APIs, go to Prism > click on the username on the top right > REST API Explorer.  Automating the API calls can make your daily tasks easier and faster, it's a script that you write once and you can use it via bots on chat platforms like Slack and Google Hangouts.  For example, if you have multiple clusters and you wish to see the alerts on all of them, you have the option to automate a script that sends you the alerts by simply writing "<cluster name> alerts" as opposed to logging in to each cluster and inserting the credentials every time.  Here is my example snippet of a server-side automation with Node.js, the call is to show the alerts on a cluster named Prolix where you can send a basic Auth credentials to pass the login page, the parsed result will be printed in the console. It’s important to include the first line:  process.env['NODE_TLS_REJECT_UNAUTHORIZ

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.

You might receive an alert stating that “IP x.x.x.x is authenticating to the REST API with the admin user.” The cause of this alert is that an external client is configured to authenticate to REST API with the admin user.   The admin user will be disabled in a forthcoming release. REST API calls from the admin user will stop working. The resolution is to authenticate to the REST API with a different user that has administrative privileges.   To resolve the warning, create another user as per the below procedure. This user can authenticate to the REST API without an alert being raised.   To know how to do this, check out https://portal.nutanix.com/#/page/docs/details?targetId=Web-Console-Guide-Prism-v510:wc-user-management-wc-c.html   To know more about the alert, check out https://portal.nutanix.com/#/page/kbs/details?targetId=kA00e000000kAHyCAM

There can be many scenarios like PSU troubleshooting or upgrades where we might want to know the current BMC and BIOS version in the cluster. Let’s say for a tracking/planning sheet of firmware upgrades or sometimes its asked from the Nutanix support for an open case you have.   There are two ways to get this information. Using IPMI or cli to get the BIOS and BMC versions on individual nodes. Using NCC to determine the model, BIOS and BMC version for all nodes.   To know in detail about the above methods take a look at https://portal.nutanix.com/#/page/kbs/details?targetId=kA0600000008ZDeCAM   Planning to upgrade the firmware in your cluster? Take a look at https://portal.nutanix.com/#/page/docs/details?targetId=Acropolis-Upgrade-Guide-v5_16:upg-firmware-upgrades-c.html

Could some one help me to understand how to calculate CVM overheads? I mean witout using the Sizer. I'm prety sure that some time before I have seen something about that in the documentation but now is removed. Nutanix bible sows some infor Drive Breakdown section but I'm not sure that it is up to date. So my question is how I can calculate overheads for the below: SSD: Nutanix Home Ext4 Formatting Genesis Cassandra OpLog Content Cache HDD Ext4 Formatting Genesis Curator

Running the checks "CVM using default password", HOST using default password", IPMI using default password", I always get green status even if the CVM, HOSTS and IPMI passwords are the default ones. Why?

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?

Earlier we have discussed the Interoperability between the different software, we also discussed the compatibility between the different software solutions and Hardware-Software integration.   What about upgrading a specific software, what is the latest version you can upgrade to? In some cases if your software is too old, you can't directly upgrade it to the latest version since each version has some prerequisites. That's why we have the upgrade paths page. which works for AOS, Prism Central and Nutanix Files upgrades. You simply choose the component with your current version and you'll see the supported versions in green under the "Target Release Version" drop-down. For more information:  To view upgrade paths for old AOS releases, please visit here http://download.nutanix.com/alerts/upgradePaths.pdf To view AOS EOL versions, please visit here http://download.nutanix.com/misc/AOS_EOL/AOS_EOL.pdf To view Prism Central EOL versions, please click here http://download.nutanix.com/misc/P

Let’s say you recently acquired a brand new Nutanix Cluster that will allow your business-critical applications like Oracle to take full advantage of low-latency storage performance and linear scalability, high availability, and simplified management.   By shifting their workloads to Nutanix, DBAs and system administrators can achieve a lower TCO and eliminate the complexity of constantly managing and optimizing their underlying compute and storage in a multitier architecture.   With the RMAN TO PLATFORM feature, you can migrate your Oracle database across platforms, making it easier than ever to get started on Nutanix.   I hope that this note empowers you to begin moving Oracle user tablespaces from Solaris to Linux on Nutanix.   See the specific details on Step by Step Migration Instructions document to get the steps for converting user tablespaces from Solaris to Linux.   Also you can consult : The complete Oracle Database Migration from Solaris to Linux technical note. The Oracle o

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 Does anyone know how to use this Powershell cmdlet properly mount-ntnxguesttoll -vmid 54312c2a-2b7e-4dbe-b7ac-0fa58b575ad2 nor mount-ntnxguesttool -vmid 00054abc-11c2-77b7-2a9b-246e963f27a8::54312c2a-2b7e-4dbe-b7ac-0fa58b575ad2 work Trying to pipe to the mount-ntnxguesttool doesn’t help either. Help!!! Christopher

hello, I would like to know if, in addition to our AHV hypervisor on the NUTANIX, if it is possible to add the ORACLE hypervisor

I just migrated a VM with Windows 2008 R2 from ESXi 6.0 to AHV but I got blue screen when I turned it on in nutanix cluster. I used move version 3.4.1 somebody knows what happened.

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?

Let's say that you want to upgrade your physical memory on one of the nodes.  On Nutanix Hardware, we allow users to add DIMMs on the empty slots without losing the support contract. When adding a DIMM, there are multiple things that you should take into consideration depending on your Nutanix Block Model, for example:  Number of slots on each node  Which DIMMs are supported, which manufacturer? The supported DIMM speed  Are there any restrictions?   To check the specification of your system, check out this page, choose the model type and the platform (NX-xxxx-Gx). you will be redirected to your model’s page. Good to know: The memory performance is most efficient with a configuration where every memory channel contains the same number of DIMMs. Nutanix supports other configurations, but be aware that these configurations result in lower performance. On G4 and G5 models, each node must contain only DIMMs of the same type and capacity. (Adding higher-speed DIMMs is supported, but the DIM

Hi All, I am pulling some data with the API. For example https://MYIP:9440/PrismGateway/services/rest/v2.0/hosts Results with , among other metrics, the following. Where can I find an explanation of each metric?             "stats": {                 "hypervisor_avg_io_latency_usecs": "0",                 "num_read_iops": "319",                 "hypervisor_write_io_bandwidth_kBps": "0",                 "timespan_usecs": "20000000",                 "controller_num_read_iops": "696",                 "read_io_ppm": "641128",                 "controller_num_iops": "1588",                 "total_read_io_time_usecs": "-1",                 "controller_total_read_io_time_usecs": "196391465",                 "hypervisor_num_io": "0",                 "controller_total_transformed_usage_bytes": "-1",                 "hypervisor_cpu_usage_ppm": "60000",                 "controller_num_write_io": "17846",                 "avg_read_io_latency_usecs": "-1",                 "content_cache_logical_ssd_

Hi, I am dealing with an EOL cluster (3060). I am facing recently a case where the prism element does list a vm which does not exist on the AHV. It is a fake vm.  There is no active support to ask them. Any help?    

Q. Why does  the home share have an icon to it as if it was a link and not a directory? The top-level directories act as a reparse point—essentially a shortcut. Consequently, administrators must create directories at the root of the share for optimal load balancing. Because it appears as a shortcut, we don’t allow user files in the root level of the share; we recommend setting permissions at the share or export root before deploying user folders. This step allows newly created top-level directories to inherit permissions, so you don’t have to adjust them after the fact using the Nutanix Files Microsoft Management Console (MMC) plug-in.   Q. Why is it necessary to empty directory prior to deleting the home share?  Distributed share directories with NFSv4 introduce some unique behaviors. To balance performance across FSVMs, each top-level directory you create becomes an automatically generated export. Nutanix Files mounts the export on demand when the directory is accessed. Since these a

If you are completing a security audit or setting up a firewall, you probably need details about the ports used by your Nutanix cluster. Thankfully, we have a reference provided which explains the ports needed by various services on an AOS cluster. You can find out about ports used by different AOS services in the KB article Port numbers used for inter CVM communication . The Security Guide found in our software documentation library is the best reference for firewall rules, which are detailed in this section. The Security Guide details which ports should be open and to what URL(s) specifically for Remote Support (reverse SSH tunnel), Pulse, Alerts (call-home for automatic case creation), SMTP sending, Data Replication to remote clusters, 1-click upgrades, and LCM.   

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

Nutanix, like any other system is composed of several components including hardware, software and firmware. If a component has to communicate with another at any given moment, the connection has to be pre-integrated and supported. How do you keep-up and understand what is compatible with what? Easy! with our compatibility matrix. For example, you have a Nutanix block model NX-8035-G5 and you want to know the supported AOS and Hypervisor for the chosen Model. The matrix shows the AOS, AHV, and hypervisor compatibility for Nutanix NX and SX Series platforms and SW-Only Models qualified by Nutanix (such as Cisco UCS, Dell PowerEdge, HPE ProLiant and others listed here). For other platforms not listed here, such as Dell XC, Lenovo HX, and others, please see your vendor documentation for compatibility. The matrix is presenting the fields in a cascading style, to show a clear components dependencies. Also in the compatibility matrix, you can see the Nutanix Ready Solution where we show the

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

Nutanix is continuously developing and improving it's features with new releases of different components, how could you know if the current software of component A is compatible with software B? For example if you are interested in upgrading your Prism Central or the Nutanix Files, there would be a specific set of Prism Central and Nutanix Files versions that can be installed with a limit of an older version depending on your AOS version. This goes both ways, if you are interested in upgrading your Operating System (AOS), you need to check your current Prism Central and Nutanix Files to understand which AOS version you can use on your current cluster's versions. We have a public page for our customers that can do the checks for you, on our Software Product Interoperability page you choose your software and the target software type, you choose your current version and the compatible version will be presented in green. The information there is dynamic and it could change with every relea