Nutanix global high-level documentation

Technical details of the Nutanix infrastructure at OVHcloud

Last updated 11th January 2022

Objective

This page provides an explanation of the elements that constitute a Nutanix cluster as delivered by OVHcloud and how it functions on the OVHcloud infrastructure.

Main characteristics

A Nutanix cluster consists of a stack of OVHcloud services:

Dedicated servers (3 minimum) are connected within the vRack which is an L2 network, the hosts (node) private network.

The public IP address of each node is not accessible since the Failover IP is dedicated to the Internet access. This access is ensured by the "OVHGateway" wich is a dedicated VM created by OVHcloud on your cluster.

The load balancer is used to expose the Prism Central WebUI to the public Internet. For security reasons, you are able to restrict the WebUI to IP addresses of your organisation.

diagram image

Sizing

Your cluster requires some features to work properly. After delivery your cluster will have 5 VMs (for a 3 node cluster). Each node will have a "CVM". In the cluster you will find two more VMs: Prism Central and the OVHgateway.

Prism Central

Prism Central is deployed in the "small" configuration.

It can furthermore work in two modes: "Alone" (1 VM) or "Scale" (3 VM). It can manage up to 2500 VMs in general.

  • Alone mode: 6 vCPUs, 26 GB of memory, and 500 GiB of storage.
  • Scale mode (for better resiliency and more capacity): 18 vCPUs, 78 GB of memory, and 1500 GiB of storage (combined).

In case of doubt, choose the "Alone" mode. You can always switch to "Scale" mode later.

CVMs

All CVMs require 32 GB of minimum memory and 12 vCPUs for each node. You will need to increase these values if you add new features on your cluster.

OVHgateway

The OVHgateway provides Internet access to the cluster via the Failover IP address.

This VM has two NICs, one for the private network (in the vRack) and the other one for the public Internet.

The VM uses NAT to route traffic from the private network to the Internet. You can therefore use it for outgoing traffic but not for incoming traffic.

OVHgateway has a lightweight design, using 1 vCPU, 1 GB memory and a 11 GiB disk.

Prism Central Access

Once the cluster is delivered, OVHcloud provides you with a FQDN for your cluster.

Acces to Prism Central is available under https://<fqdn>:9440. This access is provided through the load balancer.

Go further

Join our community of users on https://community.ovh.com/en/.


Did you find this guide useful?

Please feel free to give any suggestions in order to improve this documentation.

Whether your feedback is about images, content, or structure, please share it, so that we can improve it together.

Your support requests will not be processed via this form. To do this, please use the "Create a ticket" form.

Thank you. Your feedback has been received.


These guides might also interest you...

OVHcloud Community

Access your community space. Ask questions, search for information, post content, and interact with other OVHcloud Community members.

Discuss with the OVHcloud community

In accordance with the 2006/112/CE Directive, modified on 01/01/2015, prices incl. VAT may vary according to the customer's country of residence
(by default, the prices displayed are inclusive of the UK VAT in force).