欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  数据库

Hadoop1.2.1集群安装二

程序员文章站 2022-06-12 10:02:25
...

1:安装JDK 下载好jdk-7u45-linux-x64.gz 或从其它电脑copy过去 [jifeng@feng01 ~]$scp -r ./jdk-7u45-linux-x64.gz jifeng@jifeng01:/home/jifengThe authenticity of host jifeng01 (10.3.7.214) cant be established.RSA key fingerprint is a8:9d:34:63:

1:安装JDK

下载好jdk-7u45-linux-x64.gz

或从其它电脑copy过去


[jifeng@feng01 ~]$scp -r ./jdk-7u45-linux-x64.gz jifeng@jifeng01:/home/jifeng
The authenticity of host 'jifeng01 (10.3.7.214)' can't be established.
RSA key fingerprint is a8:9d:34:63:fa:c2:47:4f:81:10:94:fa:4b:ba:08:55.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'jifeng01,10.3.7.214' (RSA) to the list of known hosts.
jifeng@jifeng01's password: 
jdk-7u45-linux-x64.gz                         100%  132MB  32.9MB/s   00:04    

2:解压并配置java 环境

解压:tar vzxf jdk-7u45-linux-x64.gz

然后在/home/jifeng/.bash_profile文件末加上以下语句:

export JAVA_HOME=$HOME/jdk1.7.0_45

export PATH=$JAVA_HOME/bin:$PATH

export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

接着使文件生效:source /home/jifeng/.bash_profile

最后,验证是否安装成功:

java -version

[jifeng@jifeng01 ~]$ source /home/jifeng/.bash_profile
[jifeng@jifeng01 ~]$ java -version
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)
[jifeng@jifeng01 ~]$ 

3:ssh免登陆
[jifeng@jifeng01 ~]$ ssh-keygen -t -rsa
unknown key type -rsa
[jifeng@jifeng01 ~]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/jifeng/.ssh/id_rsa): 
/home/jifeng/.ssh/id_rsa already exists. 存在文件要覆盖
Overwrite (y/n)? y
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/jifeng/.ssh/id_rsa.
Your public key has been saved in /home/jifeng/.ssh/id_rsa.pub.
The key fingerprint is:
b0:f3:f7:6f:80:98:09:48:52:03:2e:a5:d3:e6:b1:a8 jifeng@jifeng01
查看生成的文件
[jifeng@jifeng01 ~]$ cd .ssh
[jifeng@jifeng01 .ssh]$ ls
authorized_keys  id_rsa  id_rsa.pub
[jifeng@jifeng01 .ssh]$ ls -l
总计 12
-rw-r--r-- 1 jifeng jifeng  397 07-22 15:40 authorized_keys
-rw------- 1 jifeng jifeng 1675 07-23 22:56 id_rsa
-rw-r--r-- 1 jifeng jifeng  397 07-23 22:56 id_rsa.pub
另外一台电脑也这样操作
[jifeng@jifeng02 ~]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/jifeng/.ssh/id_rsa): 
/home/jifeng/.ssh/id_rsa already exists.
Overwrite (y/n)? y
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /home/jifeng/.ssh/id_rsa.
Your public key has been saved in /home/jifeng/.ssh/id_rsa.pub.
The key fingerprint is:
74:bb:ff:af:9d:f3:4e:2e:18:6b:91:45:ff:ac:37:85 jifeng@jifeng02
The key's randomart image is:
+--[ RSA 2048]----+
|                 |
|              .  |
|        . .  . . |
|       . . .  . .|
|        S .  o o.|
|           .+ E +|
|          .  = .o|
|           .+ o*o|
|           ...oBX|
+-----------------+
复制文件到jifeng02
[jifeng@jifeng01 .ssh]$ scp ./id_rsa.pub jifeng@jifeng02:/home/jifeng/.ssh/authorized_keys
The authenticity of host 'jifeng02 (10.3.7.212)' can't be established.
RSA key fingerprint is 5f:20:1a:77:96:99:4a:f2:5d:a1:1d:68:b6:91:5a:e7.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'jifeng02,10.3.7.212' (RSA) to the list of known hosts.
jifeng@jifeng02's password: 
id_rsa.pub                                    100%  397     0.4KB/s   00:00    
[jifeng@jifeng01 .ssh]$ 
测试成功
[jifeng@jifeng01 .ssh]$ ssh jifeng02
Last login: Wed Jul 23 22:22:27 2014 from 10.254.254.8
[jifeng@jifeng02 ~]$