hadoop 2.2.0 安装

本安装方式为伪分布式，和完全分布式大同小异。

1. 环境设置

a. ssh免密钥登录

   进入用户home目录的.ssh文件夹，执行 ssh-keygen -t rsa，然后执行 cat id_rsa.pub >> authorized_keys

b. 配置主机名

   vi /etc/sysconfig/network  

c. 修改Hosts

   192.168.10.10  hadoop-master

2.配置环境变量

 export JAVA_HOME=/opt/binary/jdk1.7.0_60

export HADOOP_HOME=/opt/binary/hadoop-2.2.0
export MAVEN_HOME=/opt/binary/apache-maven-3.2.1
export PROTOC_HOME=/opt/protoc
export PATH=$PATH:$JAVA_HOME/bin:$HADOOP_HOME/bin:$MAVEN_HOME/bin:$PROTOC_HOME/bin

3. 建立相关目录

   mkdir -p dfs/name

   mkdir -p dfs/data

   mkdir -p temp

4. 配置hadoop

hadoop-env.sh

export JAVA_HOME=/opt/binary/jdk1.7.0_60

yarn-env.sh

export JAVA_HOME=/opt/binary/jdk1.7.0_60

core-site.xml 

<configuration>

<property>
<name>fs.defaultFS</name>
<value>hdfs://hadoop-master:9000</value>
</property>
<property>
<name>io.file.buffer.size</name>
<value>131072</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>file:/opt/data/temp</value>
</property>
<property>
<name>hadoop.proxyuser.hadoop.hosts</name>
<value>*</value>
</property>
<property>
<name>hadoop.proxyuser.hadoop.groups</name>
<value>*</value>
</property>
</configuration>

hdfs-site.xml

<configuration>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>hadoop-master:9001</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>/opt/data/dfs/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>/opt/data/dfs/data</value>
</property>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
</configuration>

yarn-site.xml

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

slaves

hadoop-master

5. hdfs格式化

hdfs namenode -format

6. 启动

./start-all.sh