清除配置
查看 Git 本地配置
清除用户名和邮箱
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git config --global --unset user.name
git config --global --unset user.email
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生成 ssh-key
使用 ssh-keygen 命令生成 ssh-key，并手动指定 id
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ssh-keygen -t rsa -f ~/.ssh/id_rsa_xx1@gmail.com -C "xx1@gmail.com"
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生成成功会输出以下内容
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Generating public/private rsa key pair.
Enter file in which to save the key (/Users/james/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /Users/james/.ssh/id_rsa.
Your public key has been saved in /Users/james/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:rwtxjGTJPoV9Mg8lFSf8D4X6jFexWVXKOMRaVyo+RO8 xx1@gmail.com
The key's randomart image is:
+---[RSA 3072]----+
| .o=o+. .*|
| . + o.=+++o.|
| * * .==o== |
| + + *ooo++ |
| = S .+o+E |
| + .. +.. |
| . .. |
| . . |
| o. |
+----[SHA256]-----+
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然后继续生成你的其他 Git 账号对应的 ssh-key
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ssh-keygen -t rsa -f ~/.ssh/id_rsa_xx2@gmail.com -C "xx2@gmail.com"
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信任 ssh-key
使用 ssh-add 命令将生成的 ssh-key 添加到 ssh-agent 信任列表
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ssh-add ~/.ssh/id_rsa_xx1@gmail.com
ssh-add ~/.ssh/id_rsa_xx2@gmail.com
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如果遇到 Could not open a connection to your authentication agent. ，输入
然后重复执行 ssh-add 即可解决
配置公钥
复制对应公钥，配置到对应 Git 网站中（GitHub / GitLab）
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pbcopy < ~/.ssh/id_rsa_xx1@gmail.com.pub
pbcopy < ~/.ssh/id_rsa_xx2@gmail.com.pub
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这步具体的操作如果有不清楚的可以参考 Adding a new SSH key to your GitHub account
配置 config
进入 ssh 目录
按照以下规则编辑 config 文件，没有则创建
| 键 |
值 |
说明 |
| Host |
主机 |
自己起 |
| Hostname |
主机名 |
Git 公有地址，比如 gitub.com / gittee.com |
| IdentityFile |
身份文件 |
rsa 文件路径 |
| User |
用户 |
自己起，一般邮箱就好 |
编辑完 config 内容如下
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Host github1.com
Hostname github.com
IdentityFile ~/.ssh/id_rsa_xx1@gmail.com
User xx1@gmail.com
Host github2.com
Hostname github.com
IdentityFile ~/.ssh/id_rsa_xx2@gmail.com
User xx2@gmail.com
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测试链接
测试 Git 账号是否连接成功，git@ 之后是 config 文件中配置的 Host
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ssh -T git@github1.com
ssh -T git@github2.com
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连接成功会有以下输出
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Hi xxx! You've successfully authenticated, but GitHub does not provide shell access.
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