Nutanix basics – which AOS version my cluster is running on


As I work for Nutanix for quite some time,  June 2014  I’d started my exciting journey. As you probably noticed, mostly I’m blogging out about Nutanix platform, how-to’s, architecture, best practices and many many more.

Nutanix basics – how to check NOS version your cluster is running on?

First things first – how to check what Acropolis Operating System (AOS) my cluster is running on? There are a few ways you can check Nutanix cluster version:

#1 – How to check AOS (formerly knows are NOS) version your cluster is running – from Prism UI

Log in to Prism –> Click on the right  Top on small user icon 2016-01-12_18h28_08 –> About Nutanix. A new window pops up and then you can read Nutanix version, License type as well as NCC version installed on the cluster.

Nutanix cluster version

Nutanix cluster version

#2 – How to check AOS version your cluster is running – command line


Use ssh client and log in to CVM. Run below commands from a command prompt

[email protected]:~$ ncli

Welcome, admin
You're now connected to 00001 (test01) at

ncli> cluster version

    Cluster Version           : danube-
    Changeset ID              : 0d569f
    Changeset Date            : 2015-10-15 17:37:46 -0700

    ncli Version              : danube-
    Changeset ID              : 0d569f
    Changeset Date            : 2015-10-15 17:37:46 -0700

You can use RestFull API call to check AOS version too. The easiest way is to download Restlet Client Google Chrome extension. Open API client and provide Nutanix Prism Element credentials and RestFull API call. See below as an example below. API call structure is as follow:

RES API call

Example output from API request:

     "id": "00056328-c051-f0b4-0000-000000011690::71312",
     "uuid": "00056328-c051-f0b4-0000-000000011690",
     "cluster_incarnation_id": 1516401559990452,
     "cluster_uuid": "00056328-c051-f0b4-0000-000000011690",
     "name": "nemo",
     "cluster_externals_ipaddress": "",
     "cluster_external_data_services_ipaddress": "",
     "cluster_masquerading_ipaddress": null,
     "cluster_masquerading_port": null,
     "timezone": "America/Los_Angeles",
     "support_verbosity_type": "BASIC_COREDUMP",
     "operation_mode": "Normal",
     "encrypted": true,
     "storage_type": "mixed",
     "cluster_functions": [
     "version": "",
     "full_version": "el7.3-release-euphrates-",
     "target_version": "",
     "external_subnet": "",
     "internal_subnet": "",
     "ncc_version": "ncc-3.6.3",
     "enable_lock_down": false,
     "enable_password_remote_login_to_cluster": true,
     "fingerprint_content_cache_percentage": 100,
     "ssd_pinning_percentage_limit": 25,
     "enable_shadow_clones": true,
     "global_nfs_white_list": [
     "enforce_rackable_unit_aware_placement": false,
     "disable_degraded_node_monitoring": false,
     "common_criteria_mode": false,
     "enable_on_disk_dedup": null,
     "management_servers": null,
     "fault_tolerance_domain_type": "NODE"
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Artur Krzywdzinski

Artur is Consulting Architect at Nutanix. He has been using, designing and deploying VMware based solutions since 2005 and Microsoft since 2012. He specialize in designing and implementing private and hybrid cloud solution based on VMware and Microsoft software stacks, datacenter migrations and transformation, disaster avoidance. Artur holds VMware Certified Design Expert certification (VCDX #077).

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