Zookeeper 错误 Will not attempt to authenticate using SASL (unknown error)

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今天在做dubbo实验的时候，碰到一个问题，卡了我7-8小时，差了很多资料无果，错误如下

2016-10-09 02:23:27,292 INFO [org.apache.zookeeper.ZooKeeper] - Initiating client connection, connectString=1.1.1.2:2181 sessionTimeout=60000 watcher=org.I0Itec.zkclient.ZkClient@3f74cc4e2016-10-09 02:23:27,307 INFO [org.I0Itec.zkclient.ZkClient] - Waiting for keeper state SyncConnected2016-10-09 02:23:32,308 INFO [org.I0Itec.zkclient.ZkEventThread] - Terminate ZkClient event thread.2016-10-09 02:23:36,665 INFO [org.apache.zookeeper.ClientCnxn] - Opening socket connection to server 1.1.1.2/1.1.1.2:2181. Will not attempt to authenticate using SASL (unknown error)2016-10-09 02:23:36,667 INFO [org.apache.zookeeper.ClientCnxn] - Socket connection established to 1.1.1.2/1.1.1.2:2181, initiating session2016-10-09 02:23:36,690 INFO [org.apache.zookeeper.ClientCnxn] - Session establishment complete on server 1.1.1.2/1.1.1.2:2181, sessionid = 0x57a5203af30018, negotiated timeout = 400002016-10-09 02:23:36,699 INFO [org.apache.zookeeper.ZooKeeper] - Session: 0x57a5203af30018 closed2016-10-09 02:23:36,702 INFO [org.apache.zookeeper.ClientCnxn] - EventThread shut down2016-10-09 02:23:36,703 WARN [org.springframework.context.support.ClassPathXmlApplicationContext] - Exception encountered during context initialization - cancelling refresh attemptorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sysUserService' defined in file [D:\linux_shared\myjavaproject\system_interchange\bhz-sys-service\target\classes\bhz\sys\service\SysUserService.class]: Initialization of bean failed; nested exception is org.I0Itec.zkclient.exception.ZkTimeoutException: Unable to connect to zookeeper server within timeout: 5000at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)

最后发现是尝试，在我自己程序运行端（也就是java程序跑的所在机器，我自己的笔记本电脑上，加入了zk服务器的ip和服务器名映射关系，没想到竟然解决了，我只能说操蛋啊，查了几个小时，因为是spring或者是程序配置问题，主要引起我注意的是Will not attempt to authenticate using SASL (unknown error)那句。。。）

1.这里1.1.1.2是zk的服务器端IP地址，我在服务器上也配置了1.1.1.2和服务器本机的IP地址映射关系，不然也可以出问题

2.在 C:\Windows\System32\drivers\etc\hosts 里加入 1.1.1.2 ubuntu16这句话，问题就解决了。。。

3.补充一下，发现zk服务器端不配置映射关系似乎也可以用，但是zk客户端，是一定要配置的

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