多个git账号的SSH key切换

摘自：多github帐号的SSH key切换

大纲

  1. 根据需要创建两个别名的ssh key
  2. 新密钥添加到SSH agent中
  3. 创建 config 配置文件
  4. 分别测试

细节

创建 ssh key 时起个名字

不要一路回车了，给这个文件起一个名字 不然默认的话就覆盖了之前生成的第一个

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
$ ssh-keygen -o -t rsa -b 4096 -C "rabbitucute@facebook.com"

Generating public/private rsa key pair.

( 起个名字 ) Enter file in which to save the key (/c/Users/anan/.ssh/id_rsa): facebook 


Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in facebook.
Your public key has been saved in facebook.pub.
The key fingerprint is:
SHA256:fYY3j8+sQocxaCUw2O2AhknZhnww9RNo5dhaNUIDTs4 rabbitucute@facebook.com
The key's randomart image is:
+---[RSA 4096]----+
| o+O+OOoo        |
|  **X=o*o..      |
|   =E *o +       |
|     o .+.o.     |
|    .  .S o+=    |
|          o+.+   |
|         . .. .  |
|          .  +   |
|           ...+  |
+----[SHA256]-----+

重复操作，分别创建了 facebook 和 google，得到四个文件

1
2
3
4
5
6
7
$ cd .ssh
$ ls

  google
  google.pub
  facebook
  facebook.pub

新密钥添加到SSH agent中

因为默认只读取id_rsa，为了让SSH识别新的私钥，需将其添加到SSH agent中：

1
ssh-add ~/.ssh/id_rsa_work

如果出现 Could not open a connection to your authentication agent 的错误，就试着用以下命令：

1
2
ssh-agent bash
ssh-add ~/.ssh/id_rsa_work

创建 config 配置文件

1
2
3
4
5
6
7
8
9
10
11
12
13
14
# 该文件用于配置私钥对应的服务器
# Default github user(first@mail.com)

Host facebook.com
 HostName facebook.com
 User git
 IdentityFile C:/Users/Administrator/.ssh/facebook

# second user(second@mail.com) # 建一个github别名，新建的帐号使用这个别名做克隆和更新

Host google
 HostName google.com
 User git
 IdentityFile C:/Users/Administrator/.ssh/google

测试

1
2
$ ssh -T git@facebook.com
Hi anan! You've successfully authenticated, but GitHub does not provide shell access.