批量给Linux服务器分发公钥

最新推荐文章于 2024-08-28 11:26:05 发布

Dexter_Wang

最新推荐文章于 2024-08-28 11:26:05 发布

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本文链接：https://blog.youkuaiyun.com/Dexter_Wang/article/details/62238026

本文介绍了如何生成RSA公钥，并利用expect脚本配合ssh-copy-id命令，实现批量将公钥分发到多个Linux服务器，简化远程登录过程。详细步骤包括公钥生成、expect脚本编辑、主机IP列表准备以及脚本执行。

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1.公钥的生成
[root@nfs1 ~]# ssh-keygen -t rsa
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:
27:68:04:bf:45:8d:b7:44:a4:a9:18:38:49:07:b7:b4 root@http1
The key's randomart image is:
+--[ RSA 2048]----+
| o.= .=o |
| . * = ..o+ |
| + E o +o . |
| . + = . |
| . = S . |
| . o |
| |
| |
| |
+-----------------+

2.安装分发使用的软件
[root@nfs1 ~]# yum install expect -y
3.编辑exp文件
[root@nfs1 ~]# vim fenfa_sshkey.exp
#!/usr/bin/expect
if { $argc != 2 } {
send_user "usage: expect scp-expect.exp file host dir\n"
exit
}

#define var