hadoop-伪分布安装
先决条件安装jre1.6rpm包 http://www.java.com/zh_CN/download/manual.jsp
chmodu+xjre-6u21-linux-i586-rpm.bin
./jre-6u21-linux-i586-rpm.bin
设置密钥登录不然每次启动时都要输入密码
$ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
测试密钥登录
ssh localhost
1. 下载安装文件
wget http://apache.etoak.com/hadoop/core/hadoop-0.20.2/hadoop-0.20.2.tar.gz
2..tar zxvfhadoop-0.20.2.tar.gz
3.viconf/hadoop-env.sh
修改JAVA_HOME为你的jre路径
export JAVA_HOME=/usr/java/jre1.6.0_21/
4. hostname查看主机名
看/etc/hosts内有无记录 没有则添加
# hostname
bogon
# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6
192.168.1.106bogon
5. 修改配置文件
conf/core-site.xml:
fs.default.name hdfs://localhost:9000 conf/hdfs-site.xml:
dfs.replication 1 conf/mapred-site.xml:
mapred.job.tracker localhost:9001 6.格式化数据节点
bin/hadoop namenode -format
7. 启动
bin/start-all.sh
8. web 访问接口
[*]NameNode - http://localhost:50070/
[*]JobTracker - http://localhost:50030/
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