Get master key to access HttpTrigger in Azure Function 2x

Question

I need to get a key to access code for HttpTrigger https://mydomain.azurewebsites.net/api/registration?code=Key. In Azure function 1x, with Url https://$functionAppName.scm.azurewebsites.net/api/functions/admin/masterkey will return my master key like {"masterKey":"ehp9f***************************"} but, in Azure Function 2x this way isn't work. How can I connect HttpTrigger in PowerShell with Azure Function 2x. Another SCM Api or syntax instead of (Invoke-RestMethod -Uri https://mydomain.scm.azurewebsites.net/api/functions/admin/masterkey -Headers @{"Authorization"=$accessToken;"If-Match"="*"} ).Masterkey in Azure function 1x.

Thanks for your support

Answer 1

This is a known issue check this wiki doc:ARM Impact and this issue:listSecrets broken for function keys in V2.

For now there is a new api however it's not released you could check this issue:Expand/Improve Functions ARM APIs.

Here is a sample api:

POST api/sites/{name}[/slots/{slot}]/host/default/listkeys

{
"masterKey": "<keyvalue>",
"functionKeys": {
  "default": "<keyvalue>",
  "my-key": "<keyvalue>"
},
"systemKeys": {
  "test-system": "<keyvalue>",
  "my-key": "<keyvalue>"
}
}

Answer 2

For those who cannot find the _master key as described in this article Get the function's master key, go the the root of the function resource and look in the App keys tab.

Answer 3

Navigate to your function in the Azure portal and click on Manage and find the Host Keys section. Click on the Copy button in the _master row to copy the master key to your clipboard.

Source: Get the function's master key

If you need to retrieve the master key inside an ARM template, take a look at the listkeys function.