Add or Remove Nodes in a Nutanix Cluster (Scale In/Out)

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KB0045097

Add or Remove Nodes in a Nutanix Cluster (Scale In/Out)


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Objective

Nutanix clusters on OVHcloud are scalable. You can now add (scale out) or remove (scale in) nodes directly from the OVHcloud Control Panel or the OVHcloud API.

OVHcloud provides services for which you are responsible, with regard to their configuration and management. You are therefore responsible for ensuring they function correctly.

This guide is designed to assist you in common tasks as much as possible. Nevertheless, we recommend that you contact the OVHcloud Professional Services team or a specialist service provider if you have difficulties or doubts concerning the administration, usage or implementation of services on a server.

Requirements

Technical Information

  • Your cluster must have between 3 and 32 nodes
  • All new nodes must run the same AOS version as the existing cluster

Instructions

Scale Out (add a node)

Add a node

  1. From the OVHcloud Control Panel, navigate to your Nutanix cluster via the Hosted Private Cloud and Nutanix menus.

    Nutanix cluster overview

  2. In the General information tab, you can see the Number of nodes. Click Manage my nodes.

    Number of nodes

  3. In the Nodes tab, select Add nodes.

    Add nodes tab

  4. Review the configuration and pricing in the pop-up window, then click Order to add the node(s).

    Order popup

Once the node is delivered, you can see the status in the General information tab.

The Number of nodes area will show a new node to install.

New node to install

Install an OS

  • OVHcloud Control Panel
  • OVHcloud API

If you click Manage my nodes again, you will see a list of your nodes. For any node with an OS not installed status, click the more options ... button and select Install.

Node status

Enter the configuration details for your node. Be sure to install the same AOS version as your cluster.

Click Install.

Install option

A confirmation banner will appear.

Confirmation message

To install your node via the OVHcloud API, use this call:

PUT /nutanix/{serviceName}/nodes/{server}/deploy

Once the node has been installed, you can connect to Prism Central/Element and expand your cluster.

Please refer to the documentation below:

Scale In (remove a node)

Power down a node

  1. From the OVHcloud Control Panel, navigate to your Nutanix cluster via the Hosted Private Cloud and Nutanix menus.

    Nutanix cluster overview

  2. In the General information tab, you can see the Number of nodes. Click Manage my nodes.

    Manage my nodes

  3. Here, you have 2 options:

  • OVHcloud Control Panel
  • OVHcloud API

For the node you wish to remove, click the more options ... button and select Power down.

Power down

A warning pop-up will appear. Type the required term and click Power down.

Powering down a Nutanix node may impact your cluster. Please check the requirements on the Nutanix portal to complete this action.

Power down warning

A confirmation banner will appear.

Power down confirmation

You can also power down your node via the OVHcloud API.

  • Get the Boot ID (enter power as the bootType):

GET /dedicated/server/{serviceName}/boot

  • Set the Boot ID:

PUT /dedicated/server/{serviceName}

  • Power down the node:

POST /dedicated/server/{serviceName}/reboot

Uninstall the node

  • OVHcloud Control Panel
  • OVHcloud API

Once the node is powered down, click the more options ... button and select Uninstall.

Uninstall button

A warning pop-up will appear. Type the required term and click Uninstall.

Uninstalling a Nutanix node may impact your cluster. Please check the requirements on the Nutanix portal to complete this action.

Uninstall warning

A confirmation banner will appear.

Uninstall confirmation

To uninstall your node via the OVHcloud API, use this call:

POST /nutanix/{serviceName}/node/{server}/terminate

Remove the node

Once the node is uninstalled, click the more options ... button and select Terminate.

Remove the node

A warning pop-up will appear. Type the required term and click Confirm.

Your suspended service will appear in your nodes list for approximately one week before being permanently deleted. This allows you to reactivate the service if you need to reverse the deletion.

Go further

You can go even further by reading these guides:

Nutanix Hyperconvergence

Nutanix Node Addition Guide

If you need training or technical assistance to implement our solutions, please contact your Technical Account Manager or click on this link to get a quote and ask our Professional Services experts for a custom analysis of your project.

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