启动后日志如下 ：

2016-09-14 05:51:19,449 [myid:1] - INFO [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 12800
2016-09-14 05:51:32,259 [myid:1] - INFO [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:QuorumCnxManager@199] - Have smaller server identifier, so dropping the connection: (2, 1)
2016-09-14 05:51:32,262 [myid:1] - INFO [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:QuorumCnxManager@199] - Have smaller server identifier, so dropping the connection: (3, 1)
2016-09-14 05:51:32,263 [myid:1] - INFO [QuorumPeer[myid=1]/0:0:0:0:0:0:0:0:2181:FastLeaderElection@852] - Notification time out: 25600

集群中其他节点日志如下：

Cannot open channel to 1 at election address ****:3888

调查 ， 排除网络 ， 防火墙问题

netstat -apn |grep 3888

tcp6       0      0 127.0.0.1:3888          :::*                    LISTEN      2275/java

发现问题 , 修改 DNS 解析，问题解决..