def METHOD_NAME(self, node, timeout):
    """
    Await quorum formed on node (leader election ready).
    :param node:  Zookeeper service node.
    :param timeout: Wait timeout.
    """
    with monitor_log(node, self.log_file, from_the_beginning=True) as monitor:
        monitor.wait_until(
            "LEADER ELECTION TOOK",
            timeout_sec=timeout,
            err_msg=f"Zookeeper quorum was not formed on {node.account.hostname}"
        )