【发布时间】：2016-07-16 12:53:27
【问题描述】：
我有一个名称节点（主节点）和 3 个数据节点（从节点）。我在名称节点本身中配置了一个数据节点，它工作正常并显示在报告中。所有守护进程都单独运行，但 3 个数据节点（从节点）未列在 hadoop dfsadmin -report 中。
当 jps 启动时，一切看起来都很好。 ：
命名节点
[hadoop@master ~]$ jps
4338 Jps
2114 NameNode
2420 SecondaryNameNode
2696 NodeManager
2584 ResourceManager
2220 DataNode
从属节点 [hadoop@slave1 ~]$ jps 2114 节点管理器 2229 日元 2015数据节点
从节点
[hadoop@slave2 ~]$ jps
2114 NodeManager
2229 Jps
2015 DataNode
从属节点 [hadoop@slave3 ~]$ jps
2114 NodeManager
2229 Jps
2015 DataNode
[hadoop@master ~]$ **hadoop dfsadmin -report**
DEPRECATED: Use of this script to execute hdfs command is deprecated.
Instead use the hdfs command for it.
16/07/14 21:27:46 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Configured Capacity: 7092494336 (6.61 GB)
Present Capacity: 1852854272 (1.73 GB)
DFS Remaining: 1852821504 (1.73 GB)
DFS Used: 32768 (32 KB)
DFS Used%: 0.00%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
Missing blocks (with replication factor 1): 0
Live datanodes (1):
Name: 192.168.1.160:50010 (nn1)*(### comment - this is data node configured in the name node itself)*
Hostname: nn1
Decommission Status : Normal
Configured Capacity: 7092494336 (6.61 GB)
DFS Used: 32768 (32 KB)
Non DFS Used: 5239640064 (4.88 GB)
DFS Remaining: 1852821504 (1.73 GB)
DFS Used%: 0.00%
DFS Remaining%: 26.12%
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: Thu Jul 14 21:27:46 IST 2016
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标签： hadoop centos hadoop-yarn hadoop2