tries = 3
        while tries:
            try:
                router = self.c.get_router(self.stack_name)
                if router is not None:
                    for i in self.c.list_router_interfaces(router):
                        self.c.remove_router_interface(router, port_id=i.id)
                        time.sleep(2)
                    self.c.delete_router(router.id)
                instances = (*self.cluster.metadata["resources"]["masters"],
                             *self.cluster.metadata["resources"]["slave"])
                server_ids = [server["id"] for server in instances]
                for server_id in server_ids:
                    self.c.delete_server(server_id)

                floating_ips = [server.get("fip") for server in instances]
                self.c.delete_network(self.stack_name)
                break
            except Exception as e:
                tries -= 1
                exception = e
        else:
            raise exception