ARM - How can I get the access key from a storage account to use in AppSettings later in the template?

Question

I'm creating an Azure Resource Manager template that instantiates multiple resources, including an Azure storage account and an Azure App Service with a Web App.

I'd like to be able to capture the primary access key (or the full connection string, either way is fine) from the newly-created storage account, and use that as a value for one of the AppSettings for the Web App.

Is that possible?

Answer 1

Use the listkeys helper function.

"appSettings": [
    {
      "name": "STORAGE_KEY",
      "value": "[listKeys(resourceId('Microsoft.Storage/storageAccounts', parameters('storageAccountName')), providers('Microsoft.Storage', 'storageAccounts').apiVersions[0]).keys[0].value]"
    }
]

This quickstart does something similar:

https://azure.microsoft.com/en-us/documentation/articles/cache-web-app-arm-with-redis-cache-provision/