[root@Master sbin]# hdfs dfsadmin -report
Java HotSpot(TM) Server VM warning: You have loaded library /usr/hadoop/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
16/03/27 18:25:39 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Configured Capacity: 303552073728 (282.70 GB) #使用已配置容量
Present Capacity: 275732979712 (256.80 GB) #当前容量
DFS Remaining: 275732905984 (256.80 GB) #DFS剩余的容量
DFS Used: 73728 (72 KB) #DFS已使用容量
DFS Used%: 0.00% #DFS已经使用的比率
Under replicated blocks: 0 #处于复制下的块
Blocks with corrupt replicas: 0 #故障副本的块
Missing blocks: 0 #丢失的块

-------------------------------------------------
Live datanodes (3):#存活的数据节点datanode数量

Name: 10.114.51.133:50010 (Salve1.Hadoop)#数据节点IP地址和端口
Hostname: Salve1.Hadoop #数据节点的主机名
Decommission Status : Normal #在/退役状态
Configured Capacity: 101184024576 (94.23 GB)#已配置的容量
DFS Used: 24576 (24 KB) #使用的DFS
Non DFS Used: 9244323840 (8.61 GB)#非DFS使用的
DFS Remaining: 91939676160 (85.63 GB)#DFS剩余
DFS Used%: 0.00% #DFS已经使用的比率
DFS Remaining%: 90.86% #DFS剩余的比率
Configured Cache Capacity: 0 (0 B) #配置的缓存容量
Cache Used: 0 (0 B) #已经使用的缓存容量
Cache Remaining: 0 (0 B)#剩余的缓存容量
Cache Used%: 100.00%#已经使用缓存的的比率
Cache Remaining%: 0.00%#剩余的缓存的比率
Xceivers: 1
Last contact: Sun Mar 27 18:25:39 PDT 2016#最后通信的时间


Name: 10.114.51.134:50010 (Salve2.Hadoop)
Hostname: Salve2.Hadoop
Decommission Status : Normal
Configured Capacity: 101184024576 (94.23 GB)
DFS Used: 24576 (24 KB)
Non DFS Used: 9287442432 (8.65 GB)
DFS Remaining: 91896557568 (85.59 GB)
DFS Used%: 0.00%
DFS Remaining%: 90.82%
Configured Cache Capacity: 0 (0 B)
Cache Used: 0 (0 B)
Cache Remaining: 0 (0 B)
Cache Used%: 100.00%
Cache Remaining%: 0.00%
Xceivers: 1
Last contact: Sun Mar 27 18:25:38 PDT 2016


Name: 10.114.51.135:50010 (Salve3.Hadoop)
Hostname: Salve3.Hadoop
Decommission Status : Normal
Configured Capacity: 101184024576 (94.23 GB)
DFS Used: 24576 (24 KB)
Non DFS Used: 9287327744 (8.65 GB)
DFS Remaining: 91896672256 (85.59 GB)
DFS Used%: 0.00%
DFS Remaining%: 90.82%
Configured Cache Capacity: 0 (0 B)
Cache Used: 0 (0 B)
Cache Remaining: 0 (0 B)
Cache Used%: 100.00%
Cache Remaining%: 0.00%
Xceivers: 1
Last contact: Sun Mar 27 18:25:40 PDT 2016


[root@Master sbin]#