第一次启动的时候,jps和浏览器全部正常,但是我stop之后,再次重启的时候,datanode就不显示了

来源：1-13 -HDFS格式化及启停

慕的地7986880

2017-07-21

[root@ecs-3905 hadoop-2.6.0-cdh5.12.0]# jps
6756 Jps
6653 SecondaryNameNode
6383 NameNode
[root@ecs-3905 hadoop-2.6.0-cdh5.12.0]# sbin/stop-dfs.sh
17/07/21 10:21:57 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Stopping namenodes on [ecs-3905]
ecs-3905: Warning: Permanently added 'ecs-3905' (ECDSA) to the list of known hosts.
ecs-3905: stopping namenode
localhost: Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.
localhost: no datanode to stop
Stopping secondary namenodes [0.0.0.0]
0.0.0.0: Warning: Permanently added '0.0.0.0' (ECDSA) to the list of known hosts.
0.0.0.0: stopping secondarynamenode
17/07/21 10:22:13 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
[root@ecs-3905 hadoop-2.6.0-cdh5.12.0]#

我把core-site.xml改成

<property>
        <name>fs.defaultFS</name>
        <value>hdfs://localhost:8020</value>
    </property>

namenode就不出现了,我把core-site.xml改成

<property>
        <name>fs.defaultFS</name>
        <value>hdfs://ecs-3905:8020</value>
    </property>

datanode就不出现了,

反正就是却一个namenode或者是datanode,请问这是什么情况?

是不是重新启动需要删除什么东西? 删除log?

[root@ecs-3905 hadoop-2.6.0-cdh5.12.0]# sbin/start-dfs.sh
17/07/21 10:20:09 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [ecs-3905]
ecs-3905: Warning: Permanently added 'ecs-3905' (ECDSA) to the list of known hosts.
ecs-3905: starting namenode, logging to /usr/local/src/app/hadoop-2.6.0-cdh5.12.0/logs/hadoop-root-namenode-ecs-3905.out
localhost: Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.
localhost: starting datanode, logging to /usr/local/src/app/hadoop-2.6.0-cdh5.12.0/logs/hadoop-root-datanode-ecs-3905.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: Warning: Permanently added '0.0.0.0' (ECDSA) to the list of known hosts.
0.0.0.0: starting secondarynamenode, logging to /usr/local/src/app/hadoop-2.6.0-cdh5.12.0/logs/hadoop-root-secondarynamenode-ecs-3905.out
17/07/21 10:20:34 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
[root@ecs-3905 hadoop-2.6.0-cdh5.12.0]# jps

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