Hadoop安装非常难，非常复杂，一不小心就GAME OVER
cd /opt/soft/install
293 ls
297 tar -zxvf hadoop-2.6.0-cdh5.14.2.tar.gz
298 ls
299 ll
300 vi /etc/profile
301 mv hadoop-2.6.0-cdh5.14.2/ hadoop260/
302 vi /etc/profile
303 source /etc/profile
304 hadoop
305 cd ./hadoop260/
306 ls
307 pwd
308 cd ./etc/
309 ls
310 cd ./hadoop
311 ls
312 pwd
313 ll
314 pwd
315 echo $JAVA_HOME
316 vi ./hadoop-env.sh 1
317 vi ./mapred-env.sh 2
318 vi ./yarn-env.sh 3
319 vi ./hadoop-env.sh
320 vi ./mapred-env.sh
321 vi ./yarn-env.sh
322 hostname
323 ip addr
324 ls
325 vi ./core-site.xml 4
326 vi ./hdfs-site.xml 5
327 cp mapred-site.xml.template mapred-site.xml
328 vi ./mapred-site.xml 6
329 vi ./yarn-site.xml 7
330 vi ./slaves 8
331 hadoop namenode -format （初始化，慎用，只第一次）
332 vi ./slaves
333 cd /opt/soft/hadoop260/
334 ls
335 ll
336 ls
337 cd /opt/soft/install/hadoop260
338 ls
339 vd ./etc
340 cd ./etc/
341 cd ./hadoop
342 history
[root@gree139 hadoop]# vi ./hdfs-site.xml
[root@gree139 hadoop]# cp mapred-site.xml.template mapred-site.xml
[root@gree139 hadoop]# vi ./mapred-site.xml
[root@gree139 hadoop]# vi ./yarn-site.xml
[root@gree139 hadoop]# vi ./slaves
[root@gree139 hadoop]# hadoop-daemon.sh start namenode
[root@gree139 hadoop]# hadoop-daemon.sh stop namenode
[root@gree139 hadoop]# hadoop-daemon.sh stop datanode
[root@gree139 hadoop]# hadoop-daemon.sh start datanode
[root@gree139 hadoop]# hadoop-daemon.sh start secondarynamenode
[root@gree139 hadoop]# hadoop-daemon.sh stop secondarynamenode
启动yarn资源管理器 NodeManager ResourceManager
[root@gree139 hadoop]# start-yarn.sh
[root@gree139 hadoop]# stop-yarn.sh
启动hdfs DataNode namenode secondarynamenode
[root@gree139 hadoop]# start-dfs.sh
[root@gree139 hadoop]# stop-dfs.sh
[root@gree139 hadoop]# yarn-daemon.sh start nodemanager
[root@gree139 hadoop]# yarn-daemon.sh stop nodemanager
[root@gree139 hadoop]# yarn-daemon.sh start resourcemanager
[root@gree139 hadoop]# yarn-daemon.sh stop resourcemanager
全部启动
[root@gree139 hadoop]# start-all.sh
[root@gree139 hadoop]# stop-all.sh
http://hostname/ip:50070 HDFS
http://gree139:8088/ yarn管理界面
http://gree139:19888/ jobhistory界面
启动历史服务
[root@gree139 hadoop]# mr-jobhistory-daemon.sh start historyserver
[root@gree139 hadoop]# jps
6064 NodeManager
6289 JobHistoryServer
5346 NameNode
5783 ResourceManager
6359 Jps
5627 SecondaryNameNode
5469 DataNode
命令方式查看 节点状态
[root@gree139 hadoop]# yarn node -list -all
在hdfs文件系统中创建input目录
[root@gree139 hadoop]# hdfs dfs -mkdir /input
查看目录下的文件信息
[root@gree139 hadoop]# hdfs dfs -ls /
上传文件到hdfs指定目录下
[root@gree139 hadoop]# hdfs dfs -put ./yarn-env.sh /input/
下载
[root@gree139 hadoop260]# hdfs dfs -get /input/yarn-env.sh ./yarn-env.sh.bak
删除
[root@gree139 hadoop260]# hdfs dfs -ls /input
