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Create a gallery for storing and sharing resources

An Azure Compute Gallery (formerly known as Shared Image Gallery) simplifies sharing resources, like images and application packages, across your organization.

The Azure Compute Gallery lets you share custom VM images and application packages with others in your organization, within or across regions, within a tenant. Choose what you want to share, which regions you want to make them available in, and who you want to share them with. You can create multiple galleries so that you can logically group resources.

The gallery is a top-level resource that can be shared in multiple ways:

Sharing with: People Groups Service Principal All users in a specific subscription (or) tenant Publicly with all users in Azure
RBAC Sharing Yes Yes Yes No No
RBAC + Direct shared gallery Yes Yes Yes Yes No
RBAC + Community gallery Yes Yes Yes No Yes

Naming

Allowed characters for gallery name are uppercase (A-Z) and lowercase (a-z) letters, digits (0-9), dots (or periods) ., and underscores _. The gallery name can't contain dashes -. Gallery names must be unique within your subscription.

  1. Sign in to the Azure portal.
  2. Type Azure Compute Gallery in the search box and select Azure Compute Gallery in the results.
  3. In the Azure Compute Gallery page, select Add.
  4. On the Create Azure Compute Gallery page, select the correct subscription.
  5. In Resource group, select a resource group from the drop-down or select Create new and type a name for the new resource group.
  6. In Name, type a name for the name of the gallery.
  7. Select a Region from the drop-down.
  8. You can type a short description of the gallery, like My gallery for testing. and then click Review + create.
  9. After validation passes, select Create.
  10. When the deployment is finished, select Go to resource.

Important

Azure Compute Gallery – direct shared gallery is currently in PREVIEW and subject to the Preview Terms for Azure Compute Gallery.

During the preview, you need to create a new gallery, with the property sharingProfile.permissions set to Groups. When using the CLI to create a gallery, use the --permissions groups parameter. You can't use an existing gallery, the property can't currently be updated.

You can't currently create a Flexible virtual machine scale set from an image shared to you by another tenant.

To start sharing a direct shared gallery with a subscription or tenant, see Share a gallery with a subscription or tenant.

  1. Sign in to the Azure portal.

  2. Type Azure Compute Gallery in the search box and select Azure Compute Gallery in the results.

  3. In the Azure Compute Gallery page, select Add.

  4. On the Create Azure Compute Gallery page, select the correct subscription.

  5. Complete all of the details on the page.

  6. At the bottom of the page, select Next: Sharing method. Screenshot showing where to select to go on to sharing methods.

  7. On the Sharing tab, select RBAC + share directly.

    Screenshot showing the option to share using both role-based access control and share directly.

  8. When you're done, select Review + create.

  9. After validation passes, select Create.

  10. When the deployment is finished, select Go to resource.

To start sharing the gallery with a subscription or tenant, see Share a gallery with a subscription or tenant.

A community gallery is shared publicly with everyone. To create a community gallery, you create the gallery first, then enable it for sharing. The name of public instance of your gallery is the prefix you provide, plus a unique GUID. Make sure that you create your gallery, image definitions, and image versions in the same region in order to share your gallery publicly.

When creating an image to share with the community, you need to provide contact information. This information is shown publicly, so be careful when providing:

  • Community gallery prefix
  • Publisher support email
  • Publisher URL
  • Legal agreement URL

Information from your image definitions is also publicly available, like what you provide for Publisher, Offer, and SKU.

Prerequisites

Only the owner of a subscription, or a user or service principal assigned to the Compute Gallery Sharing Admin role at the subscription or gallery level, can enable a gallery to go public to the community. To assign a role to a user, group, service principal or managed identity, see Steps to assign an Azure role.

The --public-name-prefix value is used to create a name for the public version of your gallery. The --public-name-prefix is the first part of the public name, and the last part will be a GUID, created by the platform, that is unique to your gallery.

location=westus
galleryName=contosoGallery
resourceGroup=myCGRG
publisherUri=https://www.contoso.com
publisherEmail=support@contoso.com
eulaLink=https://www.contoso.com/eula
prefix=ContosoImages

az group create --name $resourceGroup --location $location

az sig create \
   --gallery-name $galleryName \
   --permissions community \
   --resource-group $resourceGroup \
   --publisher-uri $publisherUri \
   --publisher-email $publisherEmail \
   --eula $eulaLink \
   --public-name-prefix $prefix

The output of this command gives you the public name for your community gallery in the sharingProfile section, under publicNames.

To start sharing the gallery to all Azure users, see Share images using a community gallery.

Next steps