ubuntu + hadoop2.5.2分布式环境配置

ubuntu + hadoop2.5.2分布式环境配置

 

我之前有详细写过hadoop-0.20.203.0rc1版本的环境搭建

 hadoop学习笔记——环境搭建 http://www.cnblogs.com/huligong1234/p/3533382.html 

本篇部分细节就不多说。

 

一、基础环境准备
系统:(VirtualBox) ubuntu-12.04.2-desktop-i386.iso
hadoop版本:hadoop-2.5.2
jdk版本:jdk-6u26-linux-i586.bin

 

1.三台测试集群,一个master(ubuntu-V01),两个slave(ubuntu-V02,ubuntu-V03)
/etc/hosts
192.168.1.112 ubuntu-V01
192.168.1.113 ubuntu-V02
192.168.1.114 ubuntu-V03

注意不要保留127.0.0.1 localhost

配置同步到其他两台机器
scp /etc/hosts root@192.168.1.113:/etc/hosts
scp /etc/hosts root@192.168.1.114:/etc/hosts

 

2. 设置linux上ssh是用户可以自动登录
$ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

 

3.java环境配置

略,当前已配好,JAVA_HOME为/usr/lib/jvm/jdk1.6.0_26

 

二、下载解压hadoop-2.5.2.tar.gz

hadoop@ubuntu-V01:~/data$ pwd
/home/hadoop/data
hadoop@ubuntu-V01:~/data$ wget http://mirror.bit.edu.cn/apache/hadoop/common/hadoop-2.5.2/hadoop-2.5.2.tar.gz
hadoop@ubuntu-V01:~/data$tar zxvf hadoop-2.5.2.tar.gz

 

三、配置环境变量
hadoop@ubuntu-V01:~/data$gedit /etc/profile
追加内容如下:

#HADOOP VARIABLES START
export HADOOP_INSTALL=/home/hadoop/data/hadoop-2.5.2
export PATH=$PATH:$HADOOP_INSTALL/bin
export PATH=$PATH:$HADOOP_INSTALL/sbin
export HADOOP_MAPRED_HOME=$HADOOP_INSTALL
export HADOOP_COMMON_HOME=$HADOOP_INSTALL
export HADOOP_HDFS_HOME=$HADOOP_INSTALL
export YARN_HOME=$HADOOP_INSTALL
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_INSTALL/lib/native
export HADOOP_OPTS="-Djava.library.path=$HADOOP_INSTALL/lib"
#HADOOP VARIABLES END

使配置生效
hadoop@ubuntu-V01:~/data$source /etc/profile

 

同时需要修改$HADOOP_HOME/etc/hadoop/hadoop-env.sh

export JAVA_HOME=/usr/lib/jvm/jdk1.6.0_26


四、修改$HADOOP_HOME/etc/hadoop/core-site.xml
添加如下内容:
<property>
<name>fs.default.name</name>
<value>hdfs://ubuntu-V01:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/home/hadoop/data/hadoop-2.5.2/hadoop-${user.name}</value>
</property>

五、修改$HADOOP_HOME/etc/hadoop/yarn-site.xml
添加如下内容:
<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.hostname</name>
<value>ubuntu-V01</value>
</property>

更多yarn-site.xml参数配置可参考:
http://hadoop.apache.org/docs/r2.5.2/hadoop-yarn/hadoop-yarn-common/yarn-default.xml


六、修改$HADOOP_HOME/etc/hadoop/mapred-site.xml
默认没有mapred-site.xml文件,copy mapred-site.xml.template 一份为 mapred-site.xml即可
#cp etc/hadoop/mapred-site.xml.template ./etc/hadoop/mapred-site.xml
添加如下内容:
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
<final>true</final>
</property>


七、配置hdfs-site.xml (这里可以不配,采用默认参数)
/usr/local/hadoop/etc/hadoop/hdfs-site.xml
用来配置集群中每台主机都可用,指定主机上作为namenode和datanode的目录。

<property>
<name>dfs.name.dir</name>
<value>/home/hadoop/data/hadoop-2.5.2/name1,/home/hadoop/data/hadoop-2.5.2/name2</value>
</property>
<property>
<name>dfs.data.dir</name>
<value>/home/hadoop/data/hadoop-2.5.2/data1,/home/hadoop/data/hadoop-2.5.2/data2</value>
</property>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>

 

八、配置salves
告诉hadoop 其他从节点,这样,只要主节点启动,他会自动启动其他机器上的nameNode dataNode 等等
编辑 $HADOOP_HOME/etc/hadoop/slaves
内容如下:
ubuntu-V02
ubuntu-V03

 

九、同步同步该文件夹 到其他各个从主机上即可

因为我们使用ssh免登陆 不需要使用密码
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$scp -r /home/hadoop/data/hadoop-2.5.2 hadoop@192.168.1.113:/home/hadoop/data/hadoop-2.5.2
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$scp -r /home/hadoop/data/hadoop-2.5.2 hadoop@192.168.1.114:/home/hadoop/data/hadoop-2.5.2


十、格式化hdfs
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$./bin/hdfs namenode -format

 

十一、启动hadoop集群
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$./sbin/start-dfs.sh
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$./sbin/start-yarn.sh

 

十二、浏览器查看
浏览器打开 http://ubuntu-V01:50070/,会看到hdfs管理页面
浏览器打开 http://ubuntu-V01:8088/,会看到hadoop进程管理页面
浏览器打开 http://ubuntu-v01:8088/cluster 查看cluster情况

 

十三、验证(WordCount验证)
1.dfs上创建input目录
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$bin/hadoop fs -mkdir -p input

2.把hadoop目录下的README.txt拷贝到dfs新建的input里
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$bin/hadoop fs -copyFromLocal README.txt input

3.运行WordCount
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$bin/hadoop jar share/hadoop/mapreduce/sources/hadoop-mapreduce-examples-2.5.2-sources.jar org.apache.hadoop.examples.WordCount input output

4.运行完毕后,查看单词统计结果
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$bin/hadoop fs -cat output/*

假如程序的输出路径为output,如果该文件夹已经存在,先删除
hadoop@ubuntu-V01:~/data/hadoop-2.5.2$bin/hadoop dfs -rmr output

 


参考资料:

Ubuntu14.04下安装Hadoop2.4.0 (单机模式)
http://www.cnblogs.com/kinglau/p/3794433.html

Ubuntu14.04下安装Hadoop2.4.0 (伪分布模式)
http://www.cnblogs.com/kinglau/p/3796164.html


伪分布模式下执行wordcount实例时报错解决办法
http://www.cnblogs.com/kinglau/p/3364928.html


Eclipse下搭建Hadoop2.4.0开发环境
http://www.cnblogs.com/kinglau/p/3802705.html

Hadoop学习三十:Win7 Eclipse调试Centos Hadoop2.2-Mapreduce
http://zy19982004.iteye.com/blog/2024467


hadoop2.5.0 centOS系列 分布式的安装 部署
http://my.oschina.net/yilian/blog/310189


Centos6.5源码编译安装Hadoop2.5.1
http://www.myhack58.com/Article/sort099/sort0102/2014/54025.htm

Hadoop MapReduce两种常见的容错场景分析
http://www.chinacloud.cn/show.aspx?id=15793&cid=17

hadoop 2.2.0集群安装
http://blog.csdn.net/bluishglc/article/details/24591185

Apache Hadoop 2.2.0 HDFS HA + YARN多机部署
http://blog.csdn.net/u010967382/article/details/20380387

Hadoop集群配置(最全面总结)
http://blog.csdn.net/hguisu/article/details/7237395

Hadoop hdfs-site.xml 配置项清单
http://he.iori.blog.163.com/blog/static/6955953520138107638208/
http://slaytanic.blog.51cto.com/2057708/1101111


Hadoop三种安装模式
http://blog.csdn.net/liumm0000/article/details/13408855

posted @ 2014-12-01 23:40 一片相思林 阅读(...) 评论(...) 编辑 收藏