Git 添加多个 SSH 密钥连接远程库

生成 RSA 密钥对

输入下列命令生成gitee的密钥

$ ssh-keygen -t rsa -C "1634363254@qq.com"
Generating public/private rsa key pair.
Enter file in which to save the key (/d/MyBlog/.ssh/id_rsa): /c/users/janking/.ssh/gitee_id_rsa
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /c/users/janking/.ssh/gitee_id_rsa.
Your public key has been saved in /c/users/janking/.ssh/gitee_id_rsa.pub.
The key fingerprint is:
SHA256:u5Qymut+JLvtu1ohlSuvw9c+tlul0xtjvcsEfh8YMME 1634363254@qq.com
The key's randomart image is:
+---[RSA 2048]----+
|          ..     |
|       .   E.    |
|      o    o     |
|     . .    o    |
|    o o S   o.   |
|    .+.. o = oo  |
|   . +=.+ + *.+. |
|    +*o++o o B o.|

输入下列命令生成github的密钥

$ ssh-keygen -t rsa -C "1634363254@qq.com"
Generating public/private rsa key pair.
Enter file in which to save the key (/d/MyBlog/.ssh/id_rsa): /c/users/janking/.ssh/github_id_rsa
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /c/users/janking/.ssh/github_id_rsa.
Your public key has been saved in /c/users/janking/.ssh/github_id_rsa.pub.
The key fingerprint is:
SHA256:yJmWkhvY5pVeERHu1Y/zUHd03w58nIVrHwpp/pN1nq4 1634363254@qq.com
The key's randomart image is:
+---[RSA 2048]----+
|        +o     .+|
|       . . . ..o*|
|        o . o +oB|
|   o o B o + +o*.|
|  . * X S o =.o.o|
|   o B .   . = .o|
|    o .     . +.o|
|             + ..|

添加公钥

然后把gitee_id_rsa.pub和github_id_rsa.pub里的全部内容分别添加到Gitee和Github的SSH公钥列表中

gitee 添加公钥

1547799308535

github 添加公钥

1547799405722

启用私钥！

方法一、使用 config 文件配置

在/c/users/janking/.ssh/目录下新建一个文件config（没有后缀）

类似于下面的写法

# gitee
Host gitee.com
    HostName git
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/gitee_id_rsa
# github
Host github.com
    HostName git
    PreferredAuthentications publickey
    IdentityFile ~/.ssh/github_id_rsa

这种方法是可以的，但是这个config文件总是写不对，上面的是已经验证过的正确的文件

之前一直不可以是因为我的环境变量被我弄坏了

Win10的环境变量里面没有HOME，我私自加了个HOME，所以放的地方就不对

所以要记得把.ssh放到环境变量HOME下面，如果没有这个变量，默认就是用户名目录（如上）

方法二、临时添加验证

输入

1	$ ssh-add gitee_id_rsa

如果报下面的错误

Could not open a connection to your authentication agent.

输入

$ ssh-agent bash

再输入上面的命令

会显示

1	Identity added: gitee_id_rsa (1634363254@qq.com)

说明添加成功！

不过这个方法的缺点就是不能永久保存….. 所以然并卵

方法三、使用同一个密钥

这是最简单的办法

就生成一个密钥，默认命名为id_rsa

这个名字不能改，不然可能不能识别

然后把公钥同时放到github和gitee上就好了！

因为密钥对公钥可以一对多

测试连通性

不管用哪种方法，可以先通过ssh命令测试一下连通性，如下是成功的结果

$ ssh -T gitee.com
Hi 王建! You've successfully authenticated, but GITEE.COM does not provide shell access.

$ ssh -T github.com
The authenticity of host 'github.com (13.229.188.59)' can't be established.
RSA key fingerprint is SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'github.com,13.229.188.59' (RSA) to the list of known hosts.
Hi JankingWon! You've successfully authenticated, but GitHub does not provide shell access.

查看所有已添加的密钥

1	$ ssh-add -l