Hadoop 单机节点集群安装

安装 Ubantun 11.10 ，root：Hadoop/hadoop

安装yum：sudo apt-get install yum

更改 root密码：sudo passwd root 输入两次密码即可

安装ssh：apt-get install ssh

配置ssh免密码登录

root@Ubuntu:~# ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
Generating public/private dsa key pair.
Created directory '/root/.ssh'.
Your identification has been saved in /root/.ssh/id_dsa.
Your public key has been saved in /root/.ssh/id_dsa.pub.
The key fingerprint is:
be:03:05:4b:ea:dd:5e:c0:43:e7:a0:ce:13:26:5b:32 root@ubuntu
The key's randomart image is:
+--[ DSA 1024]----+
|                |
|      o o .      |
|    o * +      |
|    E * = .      |
|  . @ +So      |
|    o *.. .      |
|      +..      |
|        o.      |
|        ..      |
+-----------------+

root@ubuntu:~# cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
root@ubuntu:~# cd .ssh/
root@ubuntu:~/.ssh# ls
authorized_keys  id_dsa  id_dsa.pub
root@ubuntu:~/.ssh# cat authorized_keys
ssh-dss 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 root@ubuntu
root@ubuntu:~/.ssh# ssh localhost
The authenticity of host 'localhost (127.0.0.1)' can't be established.
ECDSA key fingerprint is 0e:1d:c9:40:67:53:db:fb:51:1b:a8:ce:35:32:29:3d.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts.
Welcome to Ubuntu 11.10 (GNU/Linux 3.0.0-12-generic i686)

* Documentation:  https://help.ubuntu.com/

New release '12.04.1 LTS' available.
Run 'do-release-upgrade' to upgrade to it.

The programs included with the Ubuntu system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
applicable law.

安装rsync：apt-get install rsync

安装vsftpd：apt-get install vsftpd

启动vsftpd：service vsftpd start/stop

解压缩gz：gzip -d hadoop-1.1.0.tar.gz

解压缩tar：tar -xf hadoop-1.1.0.tar