2012-12-31 10:51:41,562-[TS] INFO main-EventThread org.I0Itec.zkclient.ZkClient - zookeeper state changed (Disconnected)
2012-12-31 10:51:43,008-[TS] INFO main-SendThread(17.22.17.1:2181) org.apache.zookeeper.ClientCnxn - Opening socket connection to server /17.22.17.1:2181. Will not attempt to authenticate using SASL (unknown error)
2012-12-31 10:51:43,009-[TS] INFO main-SendThread(17.22.17.1:2181) org.apache.zookeeper.ClientCnxn - Socket connection established to /17.22.17.1:2181, initiating session
2012-12-31 10:51:43,011-[TS] WARN main-SendThread(17.22.17.1:2181) org.apache.zookeeper.ClientCnxnSocket - Connected to an old server; r-o mode will be unavailable
2012-12-31 10:51:43,011-[TS] INFO main-SendThread(17.22.17.1:2181) org.apache.zookeeper.ClientCnxn - Session establishment complete on server /17.22.17.1:2181, sessionid = 0x13b8a23254100be, negotiated timeout = 6000
2012-12-31 10:51:43,012-[TS] INFO main-EventThread org.I0Itec.zkclient.ZkClient - zookeeper state changed (SyncConnected)
2012-12-31 10:51:47,012-[TS] INFO main-SendThread(17.22.17.1:2181) org.apache.zookeeper.ClientCnxn - Client session timed out, have not heard from server in 4002ms for sessionid 0x13b8a23254100be, closing socket connection and attempting reconnect

作为初学者，我犯了一个很严重的问题，虚拟机ip和程序的ip不一致，结果竟然还能用了一星期

我把ip改了，就解决了。