Thursday, 3 September 2015

Upgrade NOS via PRISM

One of the things I like most about Nutanix is its simplicity and it does not get much simpler then the one-click upgrade that allows you to keep your NOS up to date. The process of upgrading NOS is very similar to upgrading PRISM Central which I wrote about in a previous post.

Before upgrading NOS you should always run a ncc health check to see if their are any issues and if you do come across an issue then you can fix it or contact Nutanix support. You can run ncc by logging into a CVM and run the following command: ncc health_checks run_all

NOS is upgraded via your PRISM interface. Once you logged in you will need to click the gear icon in the top right-hand corner. Select upgrade software. Here is where you can not only upgrade NOS but also your hypervisor, firmware and NCC. 

Under NOS, click the download button. This could take a while to complete

Once downloaded a blue upgrade button appears. This will also give you the option do a pre-upgrade.

We will run the pre-upgrade first. This will check whether all the pre-requisites have been met.
This is actually done as part of the upgrade too so feel free to skip.


At the bottom click back to versions button and select upgrade > upgrade now. The pre-upgrade will run again and the upgrade will commence after that has completed.

The process will upgrade each CVM and you should see this when complete

If you return to the upgrade software window you will see it reflects the latest version

And that is it. All in all it took about 25 minutes to do a 4-node cluster. Time to upgrade the next one...

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