在linux环境下，有些情况下，我们想看下是否成功启动了Zookeeper,可以才用telnet的方式

Steps:

1.   login in the linux os

2.   input the command: telnet localhost 2181

3.   If you see the info:   Mode: standalone
   

login as: root
root@USTR-ERL2-0155.na.uis.unisys.com‘s password:
Last login: Tue Jun 13 22:56:10 2017 from cn-tangym-2.ap.uis.unisys.com
[root@USTR-ERL2-0155 ~]# telnet localhost 2181
Trying ::1...
Connected to localhost.
Escape character is ‘^]‘.
stat
Zookeeper version: 3.4.9-1757313, built on 08/23/2016 06:50 GMT
Clients:
 /0:0:0:0:0:0:0:1:38156[0](queued=0,recved=1,sent=0)
 /0:0:0:0:0:0:0:1:44030[1](queued=0,recved=8966,sent=8966)
 /0:0:0:0:0:0:0:1:44026[1](queued=0,recved=8966,sent=8966)
 /127.0.0.1:59158[1](queued=0,recved=8966,sent=8966)

Latency min/avg/max: 0/0/477
Received: 223306
Sent: 68118
Connections: 4
Outstanding: 0
Zxid: 0x64
Mode: standalone
Node count: 26
Connection closed by foreign host.
[root@USTR-ERL2-0155 ~]#

本文出自 “软件架构与开发” 博客，请务必保留此出处http://yuanzhitang.blog.51cto.com/2769219/1936511

Telnet 测试zookeeper是否启动成功