So before we go ahead and take a look at the steps, let’s have a short introduction about prism central. Prism central can be used to monitor and manage clusters registered to it through a single web console. This is a centralized multi-cluster management tool that runs as a single VM or a cluster of VMs (scaled out Prism Central deployment).
It provides features like single sign-on for multiple clusters, customizable dashboards, activity manager, etc.
If you do not have a prism central instance deployed, take a look at deployment instructions: https://support-portal.nutanix.com/page/documents/details/?targetId=Acropolis-Upgrade-Guide-v5_16:upg-pc-install-cluster-c.html
Once you have the PC VM deployed, here is how to register your cluster to it:
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Open the prism web console for your cluster.
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On the Home dashboard, click Register or create new from the Prism Central widget.
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If you have a PC VM instance deployed, click on connect. If not, there will be another option to deploy an instance.
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In the registration screen, enter the IP address, admin username and admin password for the PC VM.
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Click connect and if the credentials are correct, your cluster will be registered to Prism Central.
To take a detailed read about registering your cluster with Prism Central with step by step image guidance https://support-portal.nutanix.com/page/documents/details/?targetId=Prism-Central-Guide-Prism-v5_16:mul-register-wc-t.html
Also check out how to unregister a cluster form PC VM in the post: https://next.nutanix.com/prism-infrastructure-management-26/unregister-a-cluster-from-prism-central-33656