https://www.cnblogs.com/qingyunzong/p/8618965.html Curator http://www.throwable.club/2018/12/16/zookeeper-curator-usage/#Zookeeper%E5%AE%A2%E6%88%B7%E7%AB%AFCurator%E4%BD%BF%E7%94%A8%E8%AF%A6%E8%A7%A3