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$SendThread.run(ClientCnxn.java:1141)
2019-12-09 19:29:53,892 [myid:] - INFO [main-SendThread(localhost:2181):ClientCnxn$SendThread@1032] - Opening socket connection server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error)
2019-12-09 19:29:53,893 [myid:] - WARN [main-SendThread(localhost:2181):ClientCnxn$SendThread@1162] - Session 0x0 for server nul unexpected error, closing socket connection and attempting reconnect
这个错误我查了好久，后来发现是没有执行bin/zkServer.sh start，启动zookeeper.
然后就启动客户端了bin/zkCli.sh