Support for multi-tenant shared gallery images

[gsimore]

Is your feature request related to a problem? Please describe.

• When someone shares an image with me from a shared image gallery, it's frustrating that the only way to provision a VM with those is through the Azure CLI or Powershell, when I would like to be using Python.
• It's frustrating to have to manage credentials and authenticate across multiple tenants to list all of the shared gallery images available to me from other subscriptions and tenants. I don't even know if listing is possible from all sources today.

Describe the solution you'd like

• I would like to be able to list all shared gallery images that I have access to, whether they are from another tenant, another subscription, etc. within the same API call.
• I would like to be able to provision VMs using those shared gallery images from across tenants using the Python SDK.

Describe alternatives you've considered
There doesn't seem to be a workaround.

Additional context
I have a limited understanding of how Azure tenants / subscriptions and sharing works across those, so please excuse my lack of knowledge and feel free to clarify anything for me.

[gsimore]

It turns out we don't need to support multi-tenant after all (phew), just multiple subscription sharing on one tenant.

[nickzhums]

@gsimore Thanks for opening this issue. We'll follow up with you after we take a look at the feature request.

[changlong-liu]

We don't support multi-subscription operation for now.

Hi @Abyssknight , help to give an example for how to go through multiple subscription

[gsimore]

We were able to solve our issue by first calling the subscription client to list all subscriptions available to the tenant, then instantiating a new client for each one, and calling into the galleries api to list all shared gallery images available to each subscription.

[onenessboy]

We were able to solve our issue by first calling the subscription client to list all subscriptions available to the tenant, then instantiating a new client for each one, and calling into the galleries api to list all shared gallery images available to each subscription.

@gsimore can you please share some sample code which you tried..we have same use case, it will be helpful