hadoop单机安装

1.解压hadoop-1.0.3-bin.tar.gz放到指定目录下。

2.安装java环境，参照文档

3.Ssh无密登录

4.修改conf下四个文件

Hadoop-env.sh:

export JAVA_HOME=/usr/local/jdk.....

Core-site.xml

1 <?xml version="1.0"?>

2 <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

3

4 <!-- Put site-specific property overrides in this file. -->

5

6 <configuration>

7 <property>

8 <name>fs.default.name</name>

9 <value>hdfs://localhost:9000</value>

10 </property>

11 </configuration>

Mapred-site.xml

12 <?xml version="1.0"?>

13 <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

14

15 <!-- Put site-specific property overrides in this file. -->

16

17 <configuration>

18 <property>

19 <name>mapred.job.tracker</name>

20 <value>localhost:9001</value>

21 </property>

22 </configuration>

Hdfs-site.xml

23 <configuration>

24 <property>

25 <name>dfs.name.dir</name>

26 <value>/usr/local/hadoop/datalog1,/usr/local/hadoop/datalog2</value>

27 </property>

28 <property>

29 <name>dfs.data.dir</name>

30 <value>/usr/local/hadoop/data1,/usr/local/hadoop/data2</value>

31 </property>

32 <property>

33 <name>dfs.replication</name>

34 <value>2</value>

35 </property>

36 </configuration>

打开conf/masters文件，添加作为secondarynamenode的主机名，作为单机版环境，这里只需填写localhost就Ok了。

打开conf/slaves文件，添加作为slave的主机名，一行一个。作为单机版，这里也只需填写localhost就Ok了。

5.格式化

./bin/hadoop namenode -format

./start-all.sh

6.http://weixiaolu.iteye.com/blog/1401931