一、前言
最近一年了吧，总是忙于特定项目的业务分析和顶层设计，很少花时间和精力放到具体的技术细节，感觉除了架构理念和分析能力的提升，在具体技术层次却并没有多大的进步。因为一些原因，总被人问及一些技术细节，很多细节都模糊了，花点时间，温习一下吧。技术部分将作为下一个阶段的工作重点。
二、操作说明
查看Zookeeper内部HBase相关数据，有两个主要的渠道：一、通过Hbase shell命令zk_dump查看；二、通过zk_cli.sh查看；
三、zk_dump
代码语言：javascript复制1 HBase is rooted at /hbase
2 Active master address: localhost,60000,1411261739960
3 Backup master addresses:
4 Region server holding hbase:meta: localhost,60020,1411261739301
5 Region servers:
6 localhost,60020,1411261739301
7 /hbase/replication:
8 /hbase/replication/peers:
9 /hbase/replication/rs:
10 /hbase/replication/rs/localhost,60020,1411261739301:
11 Quorum Server Statistics:
12 192.168.230.128:2181
13 Zookeeper version: 3.4.6-1569965, built on 02/20/2014 09:09 GMT
14 Clients:
15 /192.168.230.128:54264[1](queued=0,recved=204,sent=212)
16 /192.168.230.128:54269[1](queued=0,recved=113,sent=113)
17 /192.168.230.128:54265[1](queued=0,recved=460,sent=507)
18 /192.168.230.128:54271[1](queued=0,recved=131,sent=131)
19 /192.168.230.128:54274[1](queued=0,recved=86,sent=86)
20 /192.168.230.128:54656[1](queued=0,recved=12,sent=12)
21 /192.168.230.128:54654[1](queued=0,recved=3,sent=3)
22 /192.168.230.128:54270[1](queued=0,recved=94,sent=94)
23 /192.168.230.128:54481[1](queued=0,recved=242,sent=242)
24 /192.168.230.128:54657[0](queued=0,recved=1,sent=0)
25
26 Latency min/avg/max: 0/1/155
27 Received: 1352
28 Sent: 1406
29 Connections: 10
30 Outstanding: 0
31 Zxid: 0x65
32 Mode: standalone
33 Node count: 38四、zk_cli.sh
代码语言：javascript复制1 [zk: 192.168.230.128:2181(CONNECTED) 30] ls
2 ZooKeeper -server host:port cmd args
3 connect host:port
4 get path [watch]
5 ls path [watch]
6 set path data [version]
7 rmr path
8 delquota [-n|-b] path
9 quit
10 printwatches on|off
11 create [-s] [-e] path data acl
12 stat path [watch]
13 close
14 ls2 path [watch]
15 history
16 listquota path
17 setAcl path acl
18 getAcl path
19 sync path
20 redo cmdno
21 addauth scheme auth
22 delete path [version]
23 setquota -n|-b val path
24 [zk: 192.168.230.128:2181(CONNECTED) 31] ls /
25 [hbase, zookeeper]
26 [zk: 192.168.230.128:2181(CONNECTED) 32] ls /hbase
27 [meta-region-server, backup-masters, table, draining, region-in-transition, table-lock, running, master, namespace, hbaseid, online-snapshot, replication, splitWAL, recovering-regions, rs]
28 [zk: 192.168.230.128:2181(CONNECTED) 33]五、说明
关于输出结果的解读，就不去细说了，感兴趣的兄弟，自己去问度娘吧。
