Ssh Github使用sshkey的注意事项一个sshpubkey只能对应一个githubuser

refer to: https://docs.github.com/en/authentication/connecting-to-github-with-ssh

1. 生成ssh key.

2. 如果有多个ssh key的话，修改  ~/.ssh/config 

Host *
    ServerAliveInterval 60
    ServerAliveCountMax 3


# 第一个服务器配置
Host bc_server
    HostName 158.255.2.21
    User root
    IdentityFile /root/.ssh/id_rsa_for_bc


# 第一个服务器配置
Host bc_server2
    HostName 8.217.127.107
    User root
    IdentityFile /root/.ssh/id_rsa_for_bc


Host github.com
  HostName github.com
  IdentityFile /root/.ssh/id_ed25519_for_excxxx
  IdentitiesOnly yes

3. 使用命令来验证，某个key 是对应github哪个用户。（注意：github不允许2个用户共用一个ssh pub key) 

ssh -T git@github.com
Hi Henniexx! You've successfully authenticated, but GitHub does not provide shell access.

4. git clone git@xxx  就可以了。

如果遇到这个问题的话：那就是多个用户共用了一个ssh pub key, 使用ssh -T 就知道具体是哪个用户了。

Cloning into 'app_android'...
ERROR: Repository not found.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights