AHV Virtualization

Hi Everyone,I wanted to share a real-world scenario I recently encountered regarding Prism Central account lockouts and see how the community handles similar setup challenges.The Issue:Our primary local administrator account on Prism Central kept getting locked out unexpectedly. After inspecting the logs, we traced the issue to an external automated log integration (like a SIEM/Splunk collector) executing API calls using stale credentials.Even after disabling the integration at the source and resetting the admin password, the lockout behavior occasionally persisted due to cached sessions or residual background API requests.How We Resolved It: Unlocked the user via CLI: Connected via SSH to Prism Central and ran: Bash ncli user unlock name=<Username> Created a Dedicated Admin Account: To isolate human administrative tasks from automated services, we provisioned a new, dedicated local admin account specifically for management. Isolated Integration Services: Assigned dedi

Deploying a Nutanix cluster running Nutanix AHV and AOS on Cisco UCS hardware with Fabric Interconnects (FIs) provides a resilient, high-performance hyperconverged infrastructure. Combining Nutanix with UCS Fabric Interconnects requires proper VLAN configurations, network mapping, and a seamless Foundation process.Furthermore, managing multi-cluster environments or advanced management services often requires deploying Prism Central. In this guide, we will walk through the end-to-end architecture: deploying a 3-node Nutanix AHV/AOS cluster, followed by deploying Prism Central as a VM on an ESXi host, registering Prism Element to it, and configuring network settings via the GUI.Architecture Overview & PrerequisitesArchitecture Topology Cluster Nodes: 3 x Cisco UCS C-Series Rack Servers (or UCS B-Series Blades) Control Plane: 2 x Cisco UCS Fabric Interconnects (FI 6400 / 6300 Series) in High Availability mode (FI-A and FI-B) Storage & Hypervisor: Nutanix AOS & Nutanix AHV

In enterprise environments, maintaining high availability and zero-data-loss capabilities is critical for core operational services. This case study details a real-world project where we engineered and deployed an end-to-end Business Continuity and Disaster Recovery (BCDR) solution for an enterprise client across two geographically separated datacenters (Primary Data Center and Secondary DR Site).By leveraging Nutanix AOS NearSync Replication, Protection Domains, and Prism Central Disaster Recovery Orchestration, we successfully reduced the client's Recovery Point Objective (RPO) from hours to under 5 minutes while enabling automated, non-disruptive DR testing.The Customer Challenge & RequirementsThe customer operated a legacy environment with critical production workloads (Databases, ERP, and Core Infrastructure Services). Their legacy backup and DR framework suffered from several challenges: High RPO/RTO Gaps: The previous disaster recovery mechanism relied on traditional night-t

For teams moving from VMware to AHV, what has been the biggest surprise - good or bad?

Hello,Today we tried to connect our Prism Central instances to Nutanix Central (Cloud).All PC are connected, but at Nutanix Central there are no permissions to see anything in my registered PC domains.I read that the User in Nutanix Central (my Account for this is my Email address) must be the same as in my local Prism Central.I have created a local User identically Like e-mail address for Nutanix, created an authorization policy with role prism admin and added my local User.That does Not Work.Where is the mistake? Thanks in advance and Kind regards,Thomas 

I recently faced a challenging issue where a user account on Nutanix Prism Central was getting locked out every hour.The Challenge:Initially, the account was linked to Splunk integration. Even after we completely removed the integration with Splunk, the account lockout issue persisted, which indicated that the locking mechanism was still active somewhere in the environment.The Troubleshooting Process:Since removing the integration did not resolve the problem, it was clear that the issue wasn't just a simple misconfiguration of the old integration but rather a deep-seated credential issue tied to that specific account within the Prism Central environment.The Solution:To bypass the persistent lockout issue, I created a new dedicated Admin user account on Prism Central. By migrating the required administrative tasks to this new user, we successfully eliminated the recurring lockout, and the environment became stable again. 

i need to decrease  the cvm memory size , i know that nutanix doesn’t support that but is there work  around to do that , and the cluster is fresh and has no workload ,and it is production cluster 

After performing the procedure described in KB-15880 (HOW TO: Renew expired "APLOS" and "PRISMSERVICE" certificates where the last Prism Central upgrade is over two years old), we enabled CMSP (Microservices Infrastructure).After enabling CMSP, we were no longer able to access Prism Central.The following error message is displayed when accessing the Prism Central web console:"upstream connect error or disconnect/reset before headers. reset reason: connection failure"SSH access to the Prism Central VM is available, and there are no issues with the cluster status. All services appear to be running normally.

Regarding Access of Prism Central Access, I have try to access but no luck and also please guide me the step to access the CLI of CVM

When I make an API on Prism Central, I get the appropriate result. Perhaps, when I make same API call on PE, by just changing IP to PE, response is 404 not found.e,g,: root@ahv:~# curl -k -u admin:'****'   -H "Accept: application/json"   "https://<PE>:9440/api/vmm/v4.2/ahv/config/vms/{UUID}"{    "message": "The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again."} PC version and PE version: 7.5.1Any pointers, what we might have been missing?

Hello,I am faced this error when foundation nutanix , if any one faced this error??

Hello  everyone,I have a quick question for discussion regarding Nutanix cluster expansion and licensing.Currently, I have a 3-node cluster running with a specific license type. I am planning to expand this cluster by adding 3 additional nodes. However, these new nodes will be licensed under a different tier (e.g., Starter vs. Pro).My questions for the community are:Is it technically supported to have mixed license tiers within the same Nutanix cluster?Does the cluster require all nodes to share the exact same license tier for it to function properly and remain compliant?I would appreciate hearing your experiences or insights on whether this mixed-license configuration is feasible or if I must standardize the license tier across all nodes in the cluster.Looking forward to your feedback. Thanks!

Hi Team,We would like to seek clarification regarding the storage configuration for the QRadar Event Processor (EP) instances.As per the current design, two QRadar Event Processor (EP) instances and two Event Collector (EC) instances are planned for deployment. The EP instances will be deployed on RHEL virtual machines.Our understanding is that, after the VM deployment, a Nutanix Volume Group (VG) may need to be created and presented as shared storage to both EP VMs to support an Active-Passive configuration.Could you please confirm whether a common/shared Nutanix Volume Group can be attached to both EP VMs for this purpose? If supported, we would appreciate your guidance on the recommended approach for configuring and presenting the shared storage to both VMs. We are looking for your acknoweldgement.

Hello, I have downloaded and installed Nutanix CE with AOS rev. 6.8 yesterday.Afterwards I have updated AOS to rev .7.3.1.6, FSM to 5.3, Foundation to 5.10.4 and NCC to 5.3.0.1 via LCM successfully.However, AHV upgrade failed with error:Lcm prechecks detected 1 issue that would cause upgrade failures.Check 'test_ncc_checks' failed: test_ncc_checks: Failure while validating that all NCC pre-upgrade checks ran successfully, Error: The following ncc checks failed: host_disk_usage_check. Please refer to KB 10847 Does anyone have an idea to fix this issue?BR, Joachim

 Environment: Prism Central with v4.2 API (pc.7.5.1.4 specifically), against AHV AOS 7.5.0.6 cluster Using official Nutanix JavaScript SDKs: @nutanix-api/vmm-js-client ^4.2.0 @nutanix-api/clustermgmt-js-client ^4.2.0 Node.js v14+ Problem: When attempting to update VM resources (CPU sockets, memory) or boot configuration using the v4.2 updateVmById API endpoint, the operation consistently fails with:Failed to perform the operation on the VM with UUID 'xxx',  due to an invalid argument with key 'createTime' and value 'EMPTY'. Code: VMM-30102 What We're Attempting:// Fetch current VM stateconst vmResponse = await vmApi.getVmById(vmUuid);const vmData = vmResponse.data.data;const eTag = vmData.$reserved?.ETag;// Modify resource allocationvmData.numSockets = 2;vmData.memorySizeBytes = 2 * 1024 * 1024 * 1024;// Send update with If-Match headerawait vmApi.updateVmById(vmUuid, vmData, { 'If-Match': eTag }); What We've Tried (None Work): 1. Removing timestamp fields at top level:   - Deleted c

I have a nutanix environment Running well and it is an OT Production environment. Due to some reason I want to change the Cluster Name, so before changing, I have a doubt that will cluster name change impact the virtual machine and its operation? and do I need to reboot the cluster when the cluster name is changed to new.

Hello Since onw month, when change some VMs, of Data Protection to Ptotection Policie, show the next alerts: VSS is enabled, but Nutanix VSS provider or pre_freeze/post_thaw scripts are not installedVSS snapshot is not supported for the VM X because VSS software is not installed.I returned some VMs to Data Protection, and the alerts did not return.Why do it pass this behavior?

Hi team, quick question: Is it supported to mix NICs on the same node? Specifically, can both the Mellanox 2-port CX5 SFP28 (25G) and the Intel 2-port E810 SFP28 (25G) (E810-XXVDA2) be used together on a single node?

Hi All,I’m developing a script to move away from GUI LCM click-ops for our Prism Central instances, I’m having some trouble with the lifecycle V4.1 namespace.https://{pc-ip}:9440/api/lifecycle/v4.1/operations/$actions/compute-recommendationsI’m getting errors trying to POST the following data. I understand recommendationSpec expects the UUID and targetVersion but I simply can’t get this to work, any suggestions?I’m following this documentation → https://developers.nutanix.com/api-reference?namespace=lifecycle&version=v4.1I have both a NTNX-Request-ID and X-Cluster-ID in my request, I recieve a a 400 bad request response.{ "recommendationSpec": [ { "entityUuid": "<LCM-uuid>", "toVersion": "3.1.0.1" }, { "entityUuid": "<Foundation-uuid>", "toVersion": "5.7.1" }, { "entityUuid": "<AOS-uuid>", "toVersion": "7.3.1.6" }, { "entityUuid": "<AHV-uuid>", "toVersion": "20230302.100173" } ]}

Hello Team,I have recently deployed a Nutanix solution, and everything is working as expected. I have also deployed a virtual machine with the Veeam Backup solution, which is running successfully.I have an external USB HDD that I would like to map or make accessible within the VM as a storage. Could you please guide me on how this can be achieved?Thank you for your assistance.

Hi community,I'm in the middle of deploying a 3-node Nutanix AHV cluster and have a question about live migration traffic behavior with and without the Backplane LAN configured.My current setup:- 3 Nutanix AHV nodes- 10G SFP+ uplinks for VM traffic (VLAN 1 - e.g 10.10.100.0/24)- 1G RJ45 uplinks for DMZ and Corp networks on separate VLANs- Backplane LAN not yet configuredMy questions:1. Without the Backplane LAN configured, when a host is placed into maintenance mode and VMs are live migrated to other nodes,  does that migration traffic travel over the VM's own network? For example, if a VM is on my DMZ network (1G), does its live migration traffic also go over that 1G link?2. Once the Backplane LAN is configured on a dedicated VLAN (e.g. VLAN 10 - 192.168.10.0/24) on my 10G uplinks, will ALL live migration traffic route over the backplane regardless of which network the VM is connected to?3. Is there any official documentation that specifically covers this default migration traffic beh

 Good morning all, i have the problem, that one CVM out of a 3-Node-Cluster drives me crazy… For some reason, the CVM went unresponsive regarding it´s cluster-services… CVM itself is available via SSH and I´m able to login using the Nutanix-User CVM cluster status says:   nutanix@NTNX-xxx-B-CVM:172.18.95.76:~$ cluster status | grep -v UP2026-05-08 04:50:48,386Z INFO MainThread zookeeper_session.py:226 Ignoring passed host_port_list: zk1:9876,zk2:9876,zk3:9876 because the passed host_port_list appears to have been copied from the environment variable or gflag.2026-05-08 04:50:48,387Z INFO MainThread zookeeper_session.py:296 cluster is attempting to connect to Zookeeper (unestablished session (object 0x7f6bd2b5d220)), host port list zk1:9876,zk2:9876,zk3:98762026-05-08 04:50:48,387Z INFO MainThread patterns.py:75 Creating a new instance for ZookeeperSession[('client_id', None), ('connection_timeout', None), ('host_port_list', 'zk1:9876,zk2:9876,zk3:9876'), ('use_zk_mt', None)]2026-05-08

Hello I am deploying a single node cluster but I have the next errors during the creation:Node log:2026-04-07 07:10:22,518Z ERROR svm_rescue:329 Unable to create CVM UUID Marker. Error: [Errno 2] No such file or directory: '/sys/class/dmi/id/product_uuid'2026-04-07 07:10:22,518Z ERROR svm_rescue:1430 Unable to create CVM UUID marker.In the cluster log:2026-04-07 13:46:36,188Z flagvalues.py:537 ERROR Trying to access flag gateway_server_jsonrpc_url before flags were parsed.Traceback (most recent call last):  File "gflags\flagvalues.py", line 535, in __getattr__gflags.exceptions.UnparsedFlagAccessError: Trying to access flag gateway_server_jsonrpc_url before flags were parsed.2026-04-07 13:46:36,189Z connectionpool.py:1001 DEBUG Starting new HTTPS connection (1): 10.25.0.103:22002026-04-07 13:46:36,646Z connectionpool.py:456 DEBUG https://10.25.0.103:2200 "POST /jsonrpc HTTP/1.1" 200 832026-04-07 13:46:36,686Z imaging_step_cluster_init.py:620 DEBUG Couldn't get status for services from g

how can i download nutanex AVH

Hello everyone,I am planning a migration from VMware to Nutanix AHV.The environment still includes some legacy operating systems, such as:Windows XP / Windows Server 2003 Windows Server 2008 (non-R2) Very old Linux distributions (kernel 2.6 era)I fully understand that:These OS versions are not supported on AHV Migration is technically difficult and not recommended This would be a best-effort / temporary solutionHowever, due to VMware licensing constraints, the customer must exit VMware and migrate these VMs anyway.My question to the community is simple:👉 In this kind of situation, what has been the most effective or realistic approach you have used to migrate legacy OS VMs from VMware to AHV?Any real-world experience or advice would be appreciated.Thank you.