背景:同一台电脑的public key同时添加到了github的两个账户,导致user1的仓库没法正常提交。
解决办法:为两个账户分别配置ssh key,配置~/.ssh/config文件(windows下也是这个路径,在git bash中可以识别~)
错误:
$ git push
remote: Permission to user1/python.git denied to user2.
fatal: unable to access 'https://github.com/user1/python.git/': The requested URL returned error: 403

解决:

环境:windows 7+ git bash
1、在github上删除两个账户的ssh key
2、生成两个ssh key
切换到ssh key的目录
$ cd ~/.ssh/
只需要修改文件名为user1_rsa, passphrase留空回车即可。
$ ssh-keygen -t rsa -C "user1"
Generating public/private rsa key pair.
Enter file in which to save the key (/c/Users/waston/.ssh/id_rsa): user1_rsa
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in user1_rsa.
Your public key has been saved in user1_rsa.pub.
The key fingerprint is:
SHA256:BJ5FGpGBCwM+Vw9769IACYHKoWD8gJURyYuSNOJQjUY user1
The key's randomart image is:
+---[RSA 2048]----+
|=OEB +==o |
|BBX =.=* |
|@*=B o+o. |
|*o+.o ... |
|. . .S |
| + |
| . o |
| . |
| |
+----[SHA256]-----+
同样方式生成user2_rsa
3、把user1_rsa_pub的内容上传到github后台, user2同样操作
https://help.github.com/articles/adding-a-new-ssh-key-to-your-github-account/
4、修改~/.ssh/config文件内容为:
#Default GitHub
Host github.com
HostName github.com
User git
IdentityFile ~/.ssh/user1_rsa
IdentitiesOnly yes Host github2
HostName github.com
User git
IdentityFile ~/.ssh/user2_rsa
IdentitiesOnly yes
5、添加你的ssh密钥到ssh-agent中
$ eval "$(ssh-agent -s)"
Agent pid 40672
$ ssh-add ~/.ssh/user1_rsa
Identity added: /c/Users/waston/.ssh/user1_rsa (/c/Users/waston/.ssh/user1_rsa)
$ ssh-add ~/.ssh/user2_rsa
Identity added: /c/Users/waston/.ssh/user2_rsa (/c/Users/waston/.ssh/user2_rsa)
6、测试
user1仓库测试:
cat@cat-pc MINGW64 /f/github/python (master)
$ ssh -T github.com
Hi user1! You've successfully authenticated, but GitHub does not provide shell access.
cat@cat-pc MINGW64 /f/github/python (master)
$ git push
Everything up-to-date

user2仓库测试:

$ ssh -T github2
Hi user2! You've successfully authenticated, but GitHub does not provide shell access.
cat@cat-pc MINGW64 /h/z8 (master)
$ git remote -v
origin git@github.com:user2/z.git (fetch)
origin git@github.com:user2/z.git (push)
cat@cat-pc MINGW64 /h/z8 (master)
$ git remote set-url origin git@github2:user2/z.git
cat@cat-pc MINGW64 /h/z8 (master)
$ git push
Everything up-to-date

其它:

#提示文件不存在,检查下rsa文件名或者重新生成key
$ ssh -T github2
no such identity: /c/Users/waston/.ssh/user2_rsa: No such file or directory
Permission denied (publickey).
 
参考:
Git 最著名报错 “ERROR: Permission to XXX.git denied ... - 简书
Quick Tip: How to Work with GitHub and Multiple Accounts
git - Using Multiple SSH Public Keys - Super User
Error: Permission to user/repo denied to user/other-repo - User Documentation