Hadoop集群搭建的密钥配置SSH实现机制的配置（2）

[hadoop@weekend110 ~]$ ssh-keygen -t rsa    用来生产密钥对
Generating public/private rsa key pair.
Enter file in which to save the key (/home/hadoop/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase):   不要输入密码
Enter same passphrase again: 
Your identification has been saved in /home/hadoop/.ssh/id_rsa.
Your public key has been saved in /home/hadoop/.ssh/id_rsa.pub.
The key fingerprint is:
7b:4a:0d:85:42:ec:b6:0c:14:88:d9:c6:c1:f8:46:90 hadoop@weekend110
The key's randomart image is:
+--[ RSA 2048]----+
|.X.o.o.          |
|E B ...  .       |
| + . .. . .      |
|  o . o. .       |
| .   + .S        |
|      o  +       |
|        o o      |
|       . o       |
|        .        |
+-----------------+
[hadoop@weekend110 ~]$ ll -a  密钥文件为隐藏 需要加-a
total 275760
drwx------. 20 hadoop hadoop      4096 Oct 22 20:11 .
drwxr-xr-x.  3 root   root        4096 Mar  5  2014 ..
drwxrwxr-x.  4 hadoop hadoop      4096 Oct 21 18:53 app
-rw-------.  1 hadoop hadoop       684 Oct 21 18:51 .bash_history
-rw-r--r--.  1 hadoop hadoop        18 Feb 21  2013 .bash_logout
-rw-r--r--.  1 hadoop hadoop       176 Feb 21  2013 .bash_profile
-rw-r--r--.  1 hadoop hadoop       124 Feb 21  2013 .bashrc
drwxr-xr-x.  2 hadoop hadoop      4096 Oct  9 21:18 .cache
drwxr-xr-x.  4 hadoop hadoop      4096 Oct  9 21:18 .config
drwx------.  3 hadoop hadoop      4096 Oct  9 21:18 .dbus
-rw-------.  1 hadoop hadoop        16 Oct  9 21:18 .esd_auth
drwx------.  4 hadoop hadoop      4096 Oct 21 07:22 .gconf
drwx------.  2 hadoop hadoop      4096 Oct 21 07:50 .gconfd
drwxr-xr-x.  6 hadoop hadoop      4096 Oct  9 21:46 .gnome2
drwx------.  2 hadoop hadoop      4096 Oct  9 21:46 .gnome2_private
drwxrwxr-x.  3 hadoop hadoop      4096 Oct  9 21:18 .gnote
drwx------.  2 hadoop hadoop      4096 Oct 21 07:22 .gnupg
drwxrwxr-x.  2 hadoop hadoop      4096 Oct  9 21:19 .gstreamer-0.10
-rw-rw-r--.  1 hadoop hadoop       142 Oct 21 07:22 .gtk-bookmarks
drwx------.  2 hadoop hadoop      4096 Oct  9 21:18 .gvfs
-rw-rw-r--.  1 hadoop hadoop 138656756 Oct  4 14:21 hadoop-2.4.1.tar.gz
-rw-------.  1 hadoop hadoop      1240 Oct 21 07:22 .ICEauthority
-rw-r--r--.  1 hadoop hadoop 143588167 Oct 21 21:02 jdk-7u65-linux-i586.tar.gz
drwxr-xr-x.  3 hadoop hadoop      4096 Oct  9 21:18 .local
drwxr-xr-x.  5 hadoop hadoop      4096 Oct  9 21:46 .mozilla
drwxr-xr-x.  2 hadoop hadoop      4096 Oct  9 21:18 .nautilus
drwx------.  2 hadoop hadoop      4096 Oct  9 21:18 .pulse
-rw-------.  1 hadoop hadoop       256 Oct  9 21:18 .pulse-cookie
drwx------.  2 hadoop hadoop      4096 Oct 22 22:15 .ssh
drwxr-xr-x.  2 hadoop hadoop      4096 Oct  9 21:18 Templates
-rw-------.  1 hadoop hadoop      5203 Oct 22 20:11 .viminfo
-rw-------.  1 hadoop hadoop       794 Oct 21 07:28 .xsession-errors
-rw-------.  1 hadoop hadoop       820 Oct 21 07:17 .xsession-errors.old
[hadoop@weekend110 ~]$ cd .ssh  进入密钥文件
[hadoop@weekend110 .ssh]$ ll
total 12
-rw-------. 1 hadoop hadoop 1671 Oct 22 22:15 id_rsa 私钥
-rw-r--r--. 1 hadoop hadoop  399 Oct 22 22:15 id_rsa.pub  公钥
-rw-r--r--. 1 hadoop hadoop 1186 Oct 21 20:21 known_hosts
[hadoop@weekend110 .ssh]$ scp id_rsa.pub spark01:/home/hadoop   将密钥传到spark01机器，因为这里模拟，并没有次主机，错误正常
ssh: Could not resolve hostname spark01: Name or service not known
lost connection
[hadoop@weekend110 .ssh]$ 

此后在spark01配置 ，进入.SHH文件。第一次是没有authorized_key这个文件夹，用touch创建，创建之后将权限改为-rw-------即可。然后将公钥追加到此文件即可。
[hadoop@spark01 .ssh]$ cat ../id_rsa.pub >>./authorited_key   前面的../id_rsa.pub 代表的是前一个主机传过来的公钥，不是spark01中ssh文件里的id_rsa.pub 

结束。