日期:2014-05-16 浏览次数:20711 次
??? 1. 安装 SSH
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???hadoop使用ssh进行通信,需要为ssh配置免密码登录
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$ apt-get install ssh $ ssh-keygen -t rsa -P ” -f ~/.ssh/id_rsa $ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys $ ssh localhost
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?? 验证安装成功:
$ ssh -version
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?? 显示结果:
OpenSSH_5.1p1 Debian-6ubuntu2, OpenSSL 0.9.8g 19 Oct 2007 Bad escape character ‘rsion’.
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?? 验证无密码登录:
$ ssh localhost
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???显示结果:
Linux ubuntu 2.6.31-14-generic … Last login: Sun Jun 5 15:40:06 2011 from localhost
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?? 2. 安装JDK
#下载jdk后,先修改权限 chenwq@ubuntu:~/Downloads$ chmod 777 jdk-6u27-linux-x64.bin #执行 ./jdk-6u27-linux-x64.bin
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?? 3. 安装Hadoop
???下载Hadoop最新版本:?? http://hadoop.apache.org/common/releases.html
?? 下载然后解压
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$ tar zxvf hadoop-0.20.0.tar.gz
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?? 4. 创建一个指向Hadoop的安装目录的环境变量:
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chenwq@ubuntu:/$ export HADOOP_INSTALL=/home/chenwq/Downloads/hadoop chenwq@ubuntu:/$ export PATH=$PATH:$HADOOP_INSTALL/bin
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?? 5. 检查Hadoop的运行
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chenwq@ubuntu:/$ hadoop version Hadoop 0.21.0 Subversion https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.21 -r 985326 Compiled by tomwhite on Tue Aug 17 01:02:28 EDT 2010 From source with checksum a1aeb15b4854808d152989ba76f90fac
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