Getting AadAuthOperationCannotBePerformedWhenServerIsNotAccessible on ARM template when deploying server admin with dependsOn for server

[aj9411]

Hello, I am intermittently seeing this error when deploying a resource of type Microsoft.DBforPostgreSQL/flexibleServers/administrators via ARM template.

StatusCode: Conflict, Status: Failed, ErrorCode: AadAuthOperationCannotBePerformedWhenServerIsNotAccessible, ErrorMessage: The server '{server name}' is not in an accessible state to perform Azure AD Principal operation. Please make sure the server is accessible before executing Azure AD Principal operations.

I first deploy a postgres server (Microsoft.DBforPostgreSQL/flexibleServers) and explicitly depend on this server for the deployment of the Microsoft.DBforPostgreSQL/flexibleServers/administrators resource.

This situation complicates having stable, reliable deployments as sometimes the dependsOn condition is satisfied when apparently the postgres server is not ready for an Azure AD operation. I think this is a bug, the dependsOn condition for the postgres server should not be fulfilled until the server is ready for an Azure AD operation.

example arm operation id: A6CE82DD8683DCEF, sadly don't have the correlation id available