Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
拉分支配專案環境，Tomcat啟動報錯如下:
2018-11-05 16:06:49,837 WARN [org.apache.zookeeper.ClientCnxn] - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect java.net.ConnectException: Connection timed out: no further information at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:739) at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
原因:zk連線地址錯誤，檢查發現所有provider的zk地址埠都正確，但是漏了restful專案的zk地址配置沒改，改過來就好了。
zookeeperAddr=zookeeper://127.0.0.1:2181
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