hadoop2.0安装和配置

hadoop2与hadoop1的配置有些许不同，最主要的是hadoop1里的master变成了yarn

这篇文直接从hadoop的配置开始，因为系统环境和jdk和hadoop1都是一样的。

hadoop1的配置链接，从第六步开始

六、设置hadoop2参数

进入 usr/local/hadoop/etc/hadoop 文件夹，即可看到以下文件

6.1配置hadoop-env.sh

找到export JAVA_HOME这一行，去除前面的#号注释符。

修改 export JAVA_HOME=/usr/local/jdk1.6.0_30

6.2配置core-site.xml

<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://hadoop100:8020</value>
 <final>true</final>
 </property>
<property>
 <name>hadoop.tmp.dir</name>
<value>/home/hadoop/tmphadoop2.0</value>
</property>
</configuration>

6.3配置hdfs-site.xml

<configuration>
<property>
<name>dfs.namenode.name.dir</name>
<value>/home/hadoop/tmphadoop2.0/dfs/name</value>
 <final>true</final>
</property>
 <property>
 <name>dfs.datanode.data.dir</name>
<value>/home/hadoop/tmphadoop2.0/dfs/data</value>
<description>Determines where on the local filesystem an DFS data node
should store its blocks. If this is a comma-delimited list of
directories, then data will be stored in all named directories,
typically on different devices. Directories that do not exist are
ignored. </description>
<final>true</final>
</property>
 <property>
<name>dfs.replication</name> <value>1</value>
 </property>
 <property>
<name>dfs.permissions</name> <value>false</value>
 </property>

</configuration>

6.4:配置mapred-site.xml

<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
 </property>
</configuration>

6.5配置yarn-site.xml

<?xml version="1.0"?>
<configuration>

<!-- Site specific YARN configuration properties -->
<property>
　　<name>yarn.resourcemanager.address</name>
　　<value>hadoop100:8032</value>
</property>

<property>
　　<name>yarn.resourcemanager.scheduler.address</name>
　　<value>hadoop100:8030</value>
</property>

<property>
　　<name>yarn.resourcemanager.resource-tracker.address</name>
　　<value>hadoop100:8031</value>
</property>

<property>
　　<name>yarn.resourcemanager.admin.address</name>
　　<value>hadoop100:8033</value>
</property>

<property>
　　<name>yarn.resourcemanager.webapp.address</name>
　　<value>hadoop100:8088</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> 

</configuration>

6.6配置slaves

hadoop101
hadoop102

其他的和hadoop1都是一样的，这里就不在详述