AHV Virtualization

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.

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.

I recently deployed Nutanix , but when I am opening web browser it is showing and I belive that it might be the certificate issue. I issued a commad to check the certificate in CVM and it is showing below and my system team already passed the date and time, what might be the other issue. Cluster is showing UP and healthy.  upstream connect error or disconnect/reset before headers. retried and the latest reset reason: connection failure, transport failure reason: TLS error: 268435581:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED

I migrated several Windows VMs using Nutanix Move.After the migration, I noticed that the network configurations of some VMs do not match the source settingsIPv6 protocol: Disable → Enabled I checked KB-10818, but it doesn't seem to apply to my case.(Move degraded?) Network location: Public → Private (or Private → Public) Windows Firewall: Disable → EnabledWhy are these settings changing during migration? Environment:AOS: 6.10.1(Source) → 6.10.1(Target) Hypervisor: AHV 20230302.103003(Source) → AHV 20230302.103003(Target) Guest OS: Windows Server 2019 Nutanix Move version: 6.0

Hello,Today I have delivered a three node Cluster to customer.Cluster was Set Up a few days ago in my Environment with a flat Switch.Bond mode for both vswitches is active-backup.Unfortunately Customer had prepared his ToR switches with LACP.All hosts and CVMs cannot communicate.What is the recommended procedure to fix ist?Change bond Mode host by host with manage_ovs  OR Let network team configure the switches (disable LACP) and configure the clusternodes via Prism, after that let Network Team enable LACPKind regards,Thomas 

Creating single node cluster since foundation is presenting an error:in the 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:026-04-07 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 genesis: {'stat

Hi,I’m looking to deploy the L4 load balancers for domain controller services LDAP(S), NTP, & DNS, you know they type of thing that gets addresses programmed into devices/applications.I can create a LB session for an IP and have it listen on multiple ports 53,123,636 but when I gets round to selecting the destination VM Nic's I can only specify a single port for the destination.  Is there any way to balance multiple services from a set of hosts with a single VIP, or will I need to create an LB session and separate VIP for each of the services?Also some of the documentation i read said that It’s possible to use VM Categories to select the destination VM’s, but I don’t seem to have that option, which version do I need to be running to get that?

Hi,I am trying to deploy an AHV cluster using Nutanix Foundation VM against HPE DX380 G12 servers with iLO7, but the deployment consistently fails in Phase 1 during "Preparing installer image".The relevant error in the VM Foundation log is:Imaging requires Foundation HTTPS to be enabled on port 8001 for nodes that require HTTPS boot media.What I have verified so farOn the Foundation VM:firewalld is not running port 8000 is listening port 8001 is not listening at all curl -vk https://127.0.0.1:8001 returns connection refused curl -v https://127.0.0.1:8000 returns wrong version number, which seems to confirm that port 8000 is only serving HTTP, not HTTPS ss -lntp | egrep '8000|8001' only shows *:8000 nginx -T does not show any active listen 8001 ssl configurationThe Foundation process listening on 8000 is: /home/nutanix/foundation/lib/python/bin/python3.9 /home/nutanix/foundation/bin/foundation --foreground Deployment behavior All nodes fail with the same status:fatal: Preparing installe

I have a 1 node clusterOuter AHV - 10.1.10.103Outer CVM/Prism - 10.1.10.82Data Service ip - 10.1.10.95Network-0 having vlan id 1490 - gateway - 10.1.149.1, useable ips 10.1.149.2 to 10.1.149.61Prism - https://10.1.10.82:9440/-------------------------------------------------------------------created a 3 node nested clusterAHV VM1 - 10.1.149.51AHV VM2 - 10.1.149.53AHV VM3 - 10.1.149.55Data Service ip - 10.1.149.11 Inner Prism - https://10.1.149.52:9440/nested CVM1 - 10.1.149.52nested CVM1 - 10.1.149.54nested CVM1 - 10.1.149.56vlan1 having vlan id 1490 - gateway - 10.1.149.1, useable ips 10.1.149.2 to 10.1.149.61-------------------------------------------------------------------I am trying to create a Distributed FSVM on the nested cluster, Creating Distributed FSVM on inner cluster on vlan 1490  Client Network - 10.1.149.12,10.1.149.13,10.1.149.14  Storage Network - 10.1.149.15,10.1.149.16,10.1.149.17,10.1.149.118FSVM creation is failing in cluster initialisation with error as CVM not ab

Hello, I have recently deployed nutanix with Foundation, and every went well and I can access the PE from web browser. But when I go the Virtual Switch section, I cannot See vs0 in Switch Tab, not sure what is the issue. I go to Cluster Setting and Reboot the cluster, but it keep on processing and so on entering in maintenance mode. Can anyone help.    Regards

We have created Auto shutdown playbook of AHV host with scheduled but facing issue, when Prism Central ON , these scheduled initiated before time and we not  able to to access prism central , so disable  playbook task. Prism element started then PC started and excuted these playbook schedule and shutdown 2 AHV from Prism cluster.