Prepare to create the Avere vFXT

Article
06/23/2022

This article explains prerequisite tasks for creating an Avere vFXT cluster.

Create a new subscription

Start by creating a new Azure subscription. Use a separate subscription for each Avere vFXT project to simplify expense tracking and cleanup, and to make sure other projects aren't affected by quotas or resource throttling when provisioning the cluster workflow.

To create a new Azure subscription in the Azure portal:

Navigate to the Subscriptions blade
Click the + Add button at the top
Sign in if prompted
Select an offer and walk through the steps to create a new subscription

Configure subscription owner permissions

A user with owner permissions for the subscription should create the vFXT cluster. Cluster creation requires an owner to accept the software terms of service and to authorize changes to network and storage resources.

There are some workarounds to allow a non-owner to create an Avere vFXT for Azure cluster. These scenarios involve restricting resources and assigning additional Azure roles to the creator. In all of these cases, a subscription owner also must accept the Avere vFXT software terms ahead of time.

Scenario	Restrictions	Access roles required to create the Avere vFXT cluster
Resource group administrator creates the vFXT	The virtual network, cluster controller, and cluster nodes must be created within the resource group.	User Access Administrator and Contributor roles, both scoped to the target resource group.
Use an existing, external virtual network	The cluster controller and cluster nodes are created within the vFXT's resource group but use an existing virtual network in a different resource group.	(1) User Access Administrator and Contributor roles scoped to the vFXT resource group; and (2) Virtual Machine Contributor, User Access Administrator, and Avere Contributor roles scoped to the virtual network's resource group.
Custom role for cluster creators	No resource placement restrictions. This method gives non-owners significant privileges.	Subscription owner creates an Azure custom role as explained in this article.

Quota for the vFXT cluster

Check that you have sufficient quota for the following Azure components. If needed, request a quota increase.

Note

The virtual machines and SSD components listed here are for the vFXT cluster itself. Remember that you also need quota for the VMs and SSDs you will use for your compute farm.

Make sure the quota is enabled for the region where you intend to run the workflow.

Azure component	Quota
Virtual machines	3 or more E32s_v3 (one per cluster node)
Premium SSD storage	200 GB OS space plus 1 TB to 4 TB cache space per node
Storage account (optional)	v2
Data back-end storage (optional)	One new LRS Blob container

Accept software terms

Tip

Skip this step if a subscription owner will create the Avere vFXT cluster.

During cluster creation, you must accept the terms of service for the Avere vFXT software. If you are not a subscription owner, have a subscription owner accept the terms ahead of time.

This step only needs to be done once per subscription.

To accept the software terms in advance:

Use the Azure Cloud Shell to sign in using your subscription ID.

 az login
 az account set --subscription <subscription ID>

Issue this command to accept service terms and enable programmatic access for the Avere vFXT for Azure software image:
```
az vm image terms accept --urn microsoft-avere:vfxt:avere-vfxt-controller:latest
```

Create a storage service endpoint in your virtual network (if needed)

A service endpoint keeps Azure Blob traffic local instead of routing it outside the virtual network. It is recommended for any Avere vFXT for Azure cluster that uses Azure Blob for back-end data storage.

If you create a new virtual network while creating the cluster, an endpoint is created automatically. If you provide an existing virtual network, it must have a Microsoft storage service endpoint if you want to create a new Blob storage container during cluster creation.

Tip

Skip this step if you are creating a new virtual network as part of cluster creation.
An endpoint is optional if you are not creating Blob storage during cluster creation. In that case, you can create the service endpoint later if you decide to use Azure Blob.

Create the storage service endpoint from the Azure portal.

In the portal, open your list of virtual networks.
Select the virtual network for your cluster.
Click Service endpoints from the left menu.
Click Add at the top.
Choose the service Microsoft.Storage.
Select the cluster's subnet.
At the bottom, click Add.

Next steps

After completing these prerequisites, you can create the cluster. Read Deploy the vFXT cluster for instructions.

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