Ansible学习：（一）Ansible基础
1.生成密钥：# ssh-keygen
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
74:a2:fc:4d:0c:97:0a:a6:4f:e4:8a:e0:44:f5:4d:d0 root@test
The key's randomart image is:
+--[ RSA 2048]----+
| . .o. |
|. . oE . |
| . .+.+ + |
|. * + B |
|... = S o |
|o. . + . o |
| .. . . . . |
| |
| |
+-----------------+
2.将公钥下发到被管理节点用户的.ssh目录
# ssh-copy-id -i /root/.ssh/id_rsa.pubroot@192.168.129.130
The authenticity of host '192.168.129.130 (192.168.129.130)' can't be established.
RSA key fingerprint is 0b:2d:68:5f:50:91:06:07:3c:2a:81:05:3c:c5:f9:2b.
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@192.168.129.130's password: ##输入被控端密码
Number of key(s) added: 1
Now try logging into the machine, with: "ssh 'root@192.168.129.130'"
and check to make sure that only the key(s) you wanted were added.
3.验证无密码配置是否成功
# ssh root@192.168.129.130
Last login: Sun Apr9 21:32:33 2017 from 192.168.129.134
#
给其他被控节点下发公钥步骤同上，这里不做详细说明
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