当我使用git pull从GitHub拉代码时，我遇到了以下错误:
kex_exchange_identification: Connection closed by remote host
Connection closed by 20.205.243.166 port 22
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
我确信这个ssh密钥工作得很好，直到昨天，但我不知道为什么这个错误发生。我的笔记本电脑是Macbook Air 13, Monterey 12.4。有人能帮我吗?非常感谢。
我尝试ssh -vT git@github.com调试，但似乎没有错误。我不知道怎么处理，有人能帮我吗?非常感谢。以下是ssh -vT git@github.com输出的msg(用户名替换为${username})
OpenSSH_8.6p1, LibreSSL 3.3.6
debug1: Reading configuration data /Users/${username}/.ssh/config
debug1: /Users/${username}/.ssh/config line 7: Applying options for github.com
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files
debug1: /etc/ssh/ssh_config line 54: Applying options for *
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug1: Connecting to github.com port 22.
debug1: Connection established.
debug1: identity file /Users/${username}/.ssh/id_github_rsa type 0
debug1: identity file /Users/${username}/.ssh/id_github_rsa-cert type -1
debug1: Local version string SSH-2.0-OpenSSH_8.6
kex_exchange_identification: Connection closed by remote host
Connection closed by 20.205.243.166 port 22
您可以执行以下两个步骤来求解
- 删除本地
~/.ssh目录，重新生成keygen，并粘贴到GitHub:
git config --global user.name "Your Name"
git config --global user.email "email@example.com"
ssh-keygen -t rsa -C "youremail@example.com"
打开~/.ssh/id_rsa.pub(winC:Usersname.sshid_rsa.pub)复制内容
转到GitHub SSH和GPG密钥，创建一个新的SSH keys粘贴内容并保存
测试:
ssh -T git@github.com
显示Hi username! You've successfully authenticated, but GitHub does not provide shell access.是好的
如果仍然存在Connection closed by 20.205.243.166 port 22，则执行步骤2
- 添加配置
创建/修改~/.ssh/config文件，添加以下代码:
Host github.com
HostName ssh.github.com
User git
Port 443
如果超时，请重新使用VPN全局
确保你没有连接到VPN，或者如果你是，确保它不是在增强模式。
在我的情况下，我将ProxyCommand nc -v -x 127.0.0.1:7890 %h %p添加到~/.ssh/config，然后它工作…
Host github.com
HostName github.com
User yourUsername
IdentityFile ~/.ssh/id_rsa_github
ProxyCommand nc -v -x 127.0.0.1:7890 %h %p
如果您使用VPN，那么问题很可能是您没有启用终端代理。
打开终端代理，问题成功地解决了。我用的是macOS系统。在macOS中，浏览器代理的成功并不意味着终端代理的成功。例如，我的代理端口是7890，我运行以下命令:
export https_proxy=http://127.0.0.1:7890 http_proxy=http://127.0.0.1:7890 all_proxy=socks5://127.0.0.1:7890
我在我的~/上添加了Git的主机名。Ssh/config，这解决了我的问题。当我遇到和你一样的问题时，我正在使用VPN。
Host github.com
Hostname ssh.github.com
Port 443