Ubuntu Server 14安装jdk1.8，scala2.10.4，ssh【原创】

问题导读：
1.Java和scala怎么安装？
2.ssh怎么配置？

第一部分：java和scala安装

查看本机上是否还有java可选。这里用到以下命令

$ sudo update-alternatives --list java

如果出现显示图中错误，系统中没有java可选，我们可以进行以下步骤

root@master:/tools#mkdir-p  /usr/local/jdk

root@master:/tools# tar -zxf jdk-8u60-linux-x64.tar.gz -C /usr/local/jdk

root@master:/tools# tar -zxf scala-2.10.4.tgz -C /usr/local/

update-alternatives--list java

export JAVA_HOME= /usr/local/jdk/jdk1.8.0_60/

export JRE_HOME=${JAVA_HOME}/jre

export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib

export SCALA_HOME=/usr/local/scala-2.10.4

export  PATH=${JAVA_HOME}/bin:$PATH

export PATH=$PATH:$SCALA_HOME/bin

root@master:/tools# source ~/.bashrc

root@master:/tools# java -version

root@master:/tools# scala -version

file:///C:/Users/hadoop/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png

部署好一台  我们把 /usr/local/jdk/jdk1.8.0_60/和/usr/local/scala-2.10.4 /root/.bashrcscp到Worker1 -4

写个小脚本

root@master:~# vim fenfa.sh

#!/bin/sh

for i in 1 2 3 4

do

scp -rq /usr/local/jdk1.8.0_60/ root@Worker$i:/usr/local/

scp -rq /usr/local/scala-2.10.4/ root@Worker$i:/usr/local/

scp -rq /root/.bashrc root@Worker$i:~

done

file:///C:/Users/hadoop/AppData/Local/Temp/msohtmlclip1/01/clip_image005.png

在台机子上执行

source ~/.bashrc

第二部分：ssh安装

file:///C:/Users/hadoop/AppData/Local/Temp/msohtmlclip1/01/clip_image006.png

Generating public/private dsa key pair.

Enter file in which to save the key (/root/.ssh/id_dsa):

Created directory '/root/.ssh'.

Enter passphrase (empty for no passphrase):

Enter same passphrase again:

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:

78:67:46:83:82:4d:6d:1a:0c:47:46:d4:6a:bd:0e:22 root@master

The key's randomart image is:

+--[ DSA 1024]----+

|    .*Bo         |

|     *o +.       |

|    . o*. o      |

|      +o.. .     |

|     .. S.+      |

|  E . ...+       |

|   . . o         |

|        .        |

|                 |

+-----------------+

root@master:~# ssh-copy-id -i .ssh/id_dsa.pub root@Master//分发秘钥给本机

The authenticity of host 'master (10.0.0.170)' can't be established.

ECDSA key fingerprint is d0:63:09:8e:7c:32:2e:b5:68:26:b4:7e:11:11:b0:f0.

Are you sure you want to continue connecting (yes/no)? yes

/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed

/usr/bin/ssh-copy-id: INFO: 1 key(s) remain to be installed -- if you are prompted now it is to install the new keys

root@master's password:   //root 密码

Number of key(s) added: 1

Now try logging into the machine, with:   "ssh 'root@master'"

and check to make sure that only the key(s) you wanted were added.

同理

root@Master:~# ssh-copy-id -i .ssh/id_dsa.pub root@Worker1

root@Master:~# ssh-copy-id -i .ssh/id_dsa.pub root@Worker2

root@Master:~# ssh-copy-id -i .ssh/id_dsa.pub root@Worker3

root@Master:~# ssh-copy-id -i .ssh/id_dsa.pub root@Worker4

验证ssh免秘钥登陆

root@Master:~# ssh Worker1

root@Master:~# ssh Worker2

以上部分为介绍Ubuntu Server 14的一些基础配置，为大数据平台搭建做一些前期准备，今天就写到这里，下次将介绍有关大数据 hadoop2.6.0+spark1.6.0 HA 分布式集群搭建。

应该有什么可以学的

imf  加油。。