安装Hadoop需要配置的几个文件

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记录安装hadoop时需要配置的几个文件。

配置master上的

hadoop-env.sh

修改JAVA_HOME值
export JAVA_HOME=/usr/jdk

yarn-env.sh

修改JAVA_HOME值
export JAVA_HOME=/usr/jdk

slaves

加入几个节点的hostname

slave1slave2

core-site.xml

<configuration>    <property>        <name>fs.defaultFS</name>        <value>hdfs://master:9000</value>    </property>    <property>        <name>hadoop.tmp.dir</name>        <value>file:/home/hadoop/tmp</value>    </property>    <property>        <name>io.file.buffer.size</name>        <value>131702</value>    </property></configuration>

hdfs-site.xml

<configuration>    <property>        <name>dfs.namenode.name.dir</name>        <value>file:/home/hadoop/dfs/name</value>    </property>    <property>        <name>dfs.datanode.data.dir</name>        <value>file:/home/hadoop/dfs/data</value>    </property>    <property>        <name>dfs.replication</name>        <value>2</value>    </property>    <property>        <name>dfs.namenode.secondary.http-address</name>        <value>master:9001</value>    </property>    <property>    <name>dfs.webhdfs.enabled</name>    <value>true</value>    </property></configuration>

mapred-site.xml

<configuration><property>    <name>yarn.nodemanager.aux-services</name>    <value>mapreduce_shuffle</value></property><property>    <name>yarn.nodemanager.auxservices.mapreduce.shuffle.class</name>    <value>org.apache.hadoop.mapred.ShuffleHandler</value></property><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.resource-tracker.address</name>    <value>master:8031</value></property><property>    <name>yarn.resourcemanager.admin.address</name>    <value>master:8033</value></property><property>    <name>yarn.resourcemanager.webapp.address</name>    <value>master:8088</value></property><property>    <name>yarn.nodemanager.resource.memory-mb</name>    <value>768</value></property></configuration>

yarn-site.xml

<configuration>    <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>    <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.resource-tracker.address</name>         <value>master:8031</value>  </property>  <property>          <name>yarn.resourcemanager.admin.address</name>           <value>master:8033</value>   </property>   <property>           <name>yarn.resourcemanager.webapp.address</name>           <value>master:8088</value>   </property></configuration>

将master的配置文件复制到其他节点

sudo scp -r /usr/hadoop/hadoop-2.6.2 hadoop@slave1:~/

启动hadoop

在hadoop-2.6.2文件夹下执行

hdfs namenode -format

然后执行

sbin/start-all.sh

此时执行jps在master上可以看到

13077 ResourceManager14518 Jps12779 SecondaryNameNode12444 NameNode

在slave上可以看到

7126 DataNode7336 NodeManager7722 Jps

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