老师在启动zookeeper，./zkCli.sh时候连接客户端

来源：9-18 zookeeper客户端的介绍

慕斯0913745

2018-10-02

2018-10-02 18:16:28,357 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn $S e n d T h r e a d @ 1035] - O p e n i n g s o c k e t c o n n e c t i o n t o s e r v e r l o c a l h o s t / 127.0.0.1 : 2181 . W i l l n o t a t t e m p t t o a u t h e n t i c a t e u s i n g S A S L (u n k n o w n e r r o r) 2018 - 10 - 0218 : 16 : 28, 358 [m y i d :] - W A R N [m a i n - S e n d T h r e a d (l o c a l h o s t : 2181) : C l i e n t C n x n$ SendThread@1165] - Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
java.net.ConnectException: Connection refused
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:361)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1144)