hadoop下载地址
http://archive.cloudera.com/cdh5/cdh/5/hadoop-2.6.0-cdh5.15.0.tar.gz
解压后设置环境变量
一 、core-site.xml
<configuration>
<property>
<name>fs.defaultFS</name>
<value>hdfs://DEV2:8020</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>file:/data/hadoop/hadoop-2.6.0/tmp</value>
</property>
<name>fs.checkpoint.period</name>
<value>3600</value>
</configuration>
二 、hdfs-site.xml
<configuration>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/data/hadoop/hadoop-2.6.0/tmp/dfs/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/data/hadoop/hadoop-2.6.0/tmp/dfs/data</value>
</property>
</configuration>
进入HADOOPHOME/bin进行namenode格式化‘./hdfsnamenodeformat‘进入HADOOP_HOME/sbin 启动hdfs
./start-dfs.sh
http://dev2:50070 查看hadoop url
三、 mapred-site.xml
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
四、 yarn-site.xml
<configuration>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>master</value>
</property>
<property>
<name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
<value>org.apache.hadoop.mapred.ShuffleHandler</value>
</property>
<property>
<name>yarn.log-aggregation-enable</name>
<value>true</value>
</property>
<configuration>
进入$HADOOP_HOME/sbin 启动yarn
./start-yarn.sh
http://dev2:8088/cluster 查看hadoop信息
运行mapreduce例子
hadoop jar $HADOOP_HOME/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.6.0-cdh5.15.0.jar pi 2 3