def METHOD_NAME(administrator_name: Optional[str] = None,
                                       managed_instance_name: Optional[str] = None,
                                       resource_group_name: Optional[str] = None,
                                       opts: Optional[pulumi.InvokeOptions] = None) -> AwaitableGetManagedInstanceAdministratorResult:
    """
    Gets a managed instance administrator.
    Azure REST API version: 2021-11-01.
    :param str managed_instance_name: The name of the managed instance.
    :param str resource_group_name: The name of the resource group that contains the resource. You can obtain this value from the Azure Resource Manager API or the portal.
    """
    __args__ = dict()
    __args__['administratorName'] = administrator_name
    __args__['managedInstanceName'] = managed_instance_name
    __args__['resourceGroupName'] = resource_group_name
    opts = pulumi.InvokeOptions.merge(_utilities.get_invoke_opts_defaults(), opts)
    __ret__ = pulumi.runtime.invoke('azure-native:sql:getManagedInstanceAdministrator', __args__, opts=opts, typ=GetManagedInstanceAdministratorResult).value
    return AwaitableGetManagedInstanceAdministratorResult(
        administrator_type=pulumi.get(__ret__, 'administrator_type'),
        id=pulumi.get(__ret__, 'id'),
        login=pulumi.get(__ret__, 'login'),
        name=pulumi.get(__ret__, 'name'),
        sid=pulumi.get(__ret__, 'sid'),
        tenant_id=pulumi.get(__ret__, 'tenant_id'),
        type=pulumi.get(__ret__, 'type'))