Updating a single Nutanix node

All the controller VMs of a Nutanix cluster have to have the same version of NOS installed. If you upgrade a cluster. All the CVMs are upgraded one-by-one.If you want to add a new node to the cluster, that node has to have to same version of NOS.

So what if you bought new Nutanix servers and they have a previous version of NOS installed. You cannot add this node to cluster because the NOS version is not the same.

There is a command that you can issue from a CVM that’s part of the cluster to upgrade a single Nutanix node.

  1. Login to a CVM that’s part of the cluster.
  2. Issue: /home/nutanix/cluster/bin/cluster -u [IP of the node that will be upgraded] upgrade_node

Note that this only upgrades the node and doesn’t downgrade it.



About Michael
Michael Wilmsen is a VMware training/consultant (no specific order) with more than 15 years in the IT industry. Main focus is VMware vSphere, Horizon View and Site Recovery Manager with a deepdive to performance. Michael is VCDX 210, VCAP 4/5 certified, has been rewarded with the vExpert title from 2011, is a PernixPro, Nutanix Tech Champion and a Nutanix Platform Professional.

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