从另一个（本地）存储库推送到 github 帐户后，我似乎失去了对 github 帐户的权限。我现在收到以下错误：
git push
Permission denied (publickey).fatal:
The remote end hung up unexpectedly
然后我采取了以下步骤来重新生成密钥：
ssh-keygen
Set up an ssh on my account for this laptop, using id_rsa.pub
但是，这并不成功。当我尝试以下建议的代码时，我收到以下错误：
ssh-add -l
Could not open a connection to your authentication agent.
有什么想法吗？
【问题讨论】：
标签： git permissions ssh github
您必须使用命令在服务器上导出您的密钥
ssh-copy-id user@host
和ssh-agent 应该在您的 ssh-add 之前运行。
如果您在 Linux 下，可以将此行放在 /etc/rc.local 中：
eval $(ssh-agent)
编辑：现在我知道你使用的是 windows，所以请看这个帖子：Getting ssh-agent to work with git run from windows command shell
【讨论】：
id_rsa.pub 复制生成的行并将其附加到服务器上的文件~user/.ssh/authorized_keys 中
我按照这个分步说明解决了这个问题：
第 1 步：检查 SSH 密钥
$ cd ~/.ssh
# Checks to see if there is a directory named ".ssh" in your user directory
# If it says "No such file or directory" skip to step 3. Otherwise continue to step 2.
第 2 步：备份并删除现有的 SSH 密钥
$ ls
# Lists all the subdirectories in the current directory
# config id_rsa id_rsa.pub known_hosts
$ mkdir key_backup
# Makes a subdirectory called "key_backup" in the current directory
$ cp id_rsa* key_backup
# Copies the id_rsa keypair into key_backup
$ rm id_rsa*
# Deletes the id_rsa keypair
第 3 步：生成新的 SSH 密钥
$ ssh-keygen -t rsa -C "your_email@youremail.com"
# Creates a new ssh key using the provided email
# Generating public/private rsa key pair.
# Enter file in which to save the key (/home/you/.ssh/id_rsa):
# Enter passphrase (empty for no passphrase): [Type a passphrase]
# Enter same passphrase again: [Type passphrase again]
# Your identification has been saved in /home/you/.ssh/id_rsa.
# Your public key has been saved in /home/you/.ssh/id_rsa.pub.
# The key fingerprint is:
# 01:0f:f4:3b:ca:85:d6:17:a1:7d:f0:68:9d:f0:a2:db your_email@youremail.com
第 4 步：将 SSH 密钥添加到 GitHub
$ sudo apt-get install xclip
# Downloads and installs xclip
$ xclip -sel clip < ~/.ssh/id_rsa.pub
# Copies the contents of the id_rsa.pub file to your clipboard
然后，去hithub，然后做：
第 5 步：测试一切
$ ssh -T git@github.com
# Attempts to ssh to github
如果没问题，你会看到
Hi username! You've successfully authenticated, but GitHub does not
# provide shell access.
否则（发生在我身上），你会看到
Agent admitted failure to sign using the key.
# debug1: No more authentication methods to try.
# Permission denied (publickey).
解决这个问题
$ ssh-add
# Enter passphrase for /home/you/.ssh/id_rsa: [tippy tap]
# Identity added: /home/you/.ssh/id_rsa (/home/you/.ssh/id_rsa)
原始信息
https://help.github.com/articles/generating-ssh-keys
https://help.github.com/articles/error-agent-admitted-failure-to-sign
【讨论】：
如果您已经在 ~/.ssh 中有一个公钥（并且已经将该密钥添加到您的 github 帐户），您可能只需再次将您的密钥加载到 SSH 代理中。
要测试 SSH 代理是否有密钥，请输入 ssh-add -l
如果结果是：
The agent has no identities.
然后像这样简单地将您的密钥加载到 SSH 代理中：
ssh-add ~/.ssh/github_rsa
（github_rsa 是我机器上存储的 SSH 密钥的名称。该文件还可以命名为：id_rsa）
之后，您必须输入密钥的密码（这可能是您登录 github 的密码）。如果您收到这样的消息：
Identity added: /Users/name/.ssh/github_rsa (/Users/cpotzinger/.ssh/github_rsa)
【讨论】：
做一个$ ssh-add
这对我来说也为 gitlab 解决了以下问题
jovimac-2:work joviano$ git clone git@git.xyz.com:bjetfweb.git
Cloning into 'bjetfweb'...
Access denied.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
【讨论】：