core-site.xml
<property> //指定hdfs的主端口 namenode要放在哪台機器上
<name>fs.defaultFS</name>
<value>hdfs://hadoop001:9000</value> //主機名+端口號
</property>
<property> //臨時變量目錄 data name secondary 如果指定了namenode datanode 可以不配
<name>hadoop.tmp.dir</name>
<value>usr/soft/tmp/
</value>
</property>
<property> //流緩沖區大小 128MB
<name>io.file.buffer.size</name>
<value>131072</value>
</property>
hdfs-site.xml
<property> //副本數
<name>dfs.replication</name>
<value>2</value>
</property>
<property> //secondary
<name>dfs.secondary.http.address</name>
<value>hadoop001:50090</value>
</property>
yarn-site.xml
<property> //mapreduce中的shuffle過程
<name>yarn.resourcemanager.hostname</name>
<value>hadoop001</value>
</property>
<property> //resourcemanager 在哪台主機上
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
mapred-site.xml
<property> //mapreduce 依賴的框架
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property> //歷史服務器監控端口
<name>mapreduce.jobhistory.address</name>
<value>hadoop001:10020</value>
</property>
<property> //歷史服務器的web監控地址
<name>mapreduce.jobhistory.webapp.address</name>
<value>hadoop001:19888</value>
</property>
<property> //歷史服務器的記錄的最大容納數
<name>mapreduce.jobhistory.joblist.cache.size</name>
<value>20000</value>
</property>