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← cd ~/roles
// roles/azure · web-and-mobile

SignalR App ServerAzure built-in role

Lets your app server access SignalR Service with AAD auth options.

Role ID420fcaa2-552c-430f-98ca-3264be4806c7
CategoryWeb-and-mobile
Actions0
Data actions3

Before you assign it

  • It reaches the data, not just the resource. It has 3 data actions, such as reading blobs, secrets or messages.

What it can do

No control-plane actions.

Data actions

PermissionWhat it allows
Microsoft.SignalRService/SignalR/auth/accessKey/actionGenerate an AccessKey for signing AccessTokens, the key will expire in 90 minutes by default
Microsoft.SignalRService/SignalR/serverConnection/writeStart a server connection
Microsoft.SignalRService/SignalR/clientConnection/writeClose client connection

Assign it

Scope it as tightly as you can: a resource or resource group rather than the whole subscription.

azure cli
az role assignment create \
  --assignee "jane.doe@contoso.com" \
  --role "SignalR App Server" \
  --scope "/subscriptions/<subscription id>/resourceGroups/<resource group>"
powershell3 lines
New-AzRoleAssignment -SignInName "jane.doe@contoso.com" `
  -RoleDefinitionName "SignalR App Server" `
  -Scope "/subscriptions/<subscription id>/resourceGroups/<resource group>"
bicep7 lines
resource assignment 'Microsoft.Authorization/roleAssignments@2022-04-01' = {
  name: guid(resourceGroup().id, principalId, '420fcaa2-552c-430f-98ca-3264be4806c7')
  properties: {
    roleDefinitionId: subscriptionResourceId('Microsoft.Authorization/roleDefinitions', '420fcaa2-552c-430f-98ca-3264be4806c7')
    principalId: principalId
  }
}

Who already has it?

kql · azure resource graph
authorizationresources
| where type == "microsoft.authorization/roleassignments"
| where tostring(properties.roleDefinitionId) endswith "420fcaa2-552c-430f-98ca-3264be4806c7"
| project principalId = tostring(properties.principalId), principalType = tostring(properties.principalType), scope = tostring(properties.scope)

Other web-and-mobile roles

Find the smallest role for a task →

Sources