CentOS 7 搭建hadoop叢集(提供各種安裝包 超值免費)
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hadoop安裝教程 人家寫的挺好 我也就不重複了,安裝測試遇到的什麼問題都可以在下面留言,基本隨時回。
------------------------------------------------------防火牆----------------------------------------------------------------------------
幾條關於防火牆的命令:
1.檢視狀態:firewall-cmd --state
開啟狀態:running
關閉狀態:not running
2.關閉防火牆:systemctl stop firewalld.service
3.開機不啟動防火牆:systemctl disable firewalld.service
附上我的配置檔案
-----------------------------------------------------------core-site.xml---------------------------------------------------------------
<property>
<name>hadoop.tmp.dir</name>
<value>/home/hadoopdir/dfs/data</value>
<description>A base for other temporary directories.</description>
</property>
<property>
<name>io.file.buffer.size</name>
<value>131072</value>
</property>
<property>
<name>fs.default.name</name>
<value>hdfs://master:9000</value>
</property>
<property>
<name>hadoop.proxyuser.root.hosts</name>
<value>*</value>
</property>
<property>
<name>hadoop.proxyuser.root.groups</name>
<value>*</value>
</property>
----------------------------------------------------------------hdfs-site.xml------------------------------------------------------------
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>/home/hadoopdir/dfs/name</value>
<final>true</final>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>/home/hadoopdir/dfs/data</value>
<final>true</final>
</property>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>master:9001</value>
</property>
<property>
<name>dfs.webhdfs.enabled</name>
<value>true</value>
</property>
<property>
<name>dfs.permissions</name>
<value>false</value>
</property>
------------------------------------------------------------mapred-site.xml--------------------------------------------------------
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
--------------------------------------------------------------yarn-site.xml-------------------------------------------------------------
<property>
<name>yarn.resourcemanager.address</name>
<value>master:8032</value>
</property>
<property>
<name>yarn.resourcemanager.scheduler.address</name>
<value>master:8030</value>
</property>
<property>
<name>yarn.resourcemanager.webapp.address</name>
<value>master:8088</value>
</property>
<property>
<name>yarn.resourcemanager.resource-tracker.address</name>
<value>master:8031</value>
</property>
<property>
<name>yarn.resourcemanager.admin.address</name>
<value>master:8033</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce.shuffle</value>
</property>
<property>
<name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name>
<value>org.apache.hadoop.mapred.ShuffleHandler</value>
</property>