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:::ec:b6:0c:::d9:c6:c1:f8:: hadoop@weekend110
The key's randomart image is:
+--[ RSA ]----+
|.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
drwx------.  hadoop hadoop       Oct  : .
drwxr-xr-x.   root   root         Mar     ..
drwxrwxr-x.   hadoop hadoop       Oct  : app
-rw-------.   hadoop hadoop        Oct  : .bash_history
-rw-r--r--.   hadoop hadoop         Feb    .bash_logout
-rw-r--r--.   hadoop hadoop        Feb    .bash_profile
-rw-r--r--.   hadoop hadoop        Feb    .bashrc
drwxr-xr-x.   hadoop hadoop       Oct   : .cache
drwxr-xr-x.   hadoop hadoop       Oct   : .config
drwx------.   hadoop hadoop       Oct   : .dbus
-rw-------.   hadoop hadoop         Oct   : .esd_auth
drwx------.   hadoop hadoop       Oct  : .gconf
drwx------.   hadoop hadoop       Oct  : .gconfd
drwxr-xr-x.   hadoop hadoop       Oct   : .gnome2
drwx------.   hadoop hadoop       Oct   : .gnome2_private
drwxrwxr-x.   hadoop hadoop       Oct   : .gnote
drwx------.   hadoop hadoop       Oct  : .gnupg
drwxrwxr-x.   hadoop hadoop       Oct   : .gstreamer-0.10
-rw-rw-r--.   hadoop hadoop        Oct  : .gtk-bookmarks
drwx------.   hadoop hadoop       Oct   : .gvfs
-rw-rw-r--.   hadoop hadoop  Oct   : hadoop-2.4..tar.gz
-rw-------.   hadoop hadoop       Oct  : .ICEauthority
-rw-r--r--.   hadoop hadoop  Oct  : jdk-7u65-linux-i586.tar.gz
drwxr-xr-x.   hadoop hadoop       Oct   : .local
drwxr-xr-x.   hadoop hadoop       Oct   : .mozilla
drwxr-xr-x.   hadoop hadoop       Oct   : .nautilus
drwx------.   hadoop hadoop       Oct   : .pulse
-rw-------.   hadoop hadoop        Oct   : .pulse-cookie
drwx------.   hadoop hadoop       Oct  : .ssh
drwxr-xr-x.   hadoop hadoop       Oct   : Templates
-rw-------.   hadoop hadoop       Oct  : .viminfo
-rw-------.   hadoop hadoop        Oct  : .xsession-errors
-rw-------.   hadoop hadoop        Oct  : .xsession-errors.old
[hadoop@weekend110 ~]$ cd .ssh  进入密钥文件
[hadoop@weekend110 .ssh]$ ll
total
-rw-------.  hadoop hadoop  Oct  : id_rsa 私钥
-rw-r--r--.  hadoop hadoop   Oct  : id_rsa.pub  公钥
-rw-r--r--.  hadoop hadoop  Oct  : 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。