git 添加ssh公钥

解决git@github.com: Permission denied (publickey). Could not read from remote repository

原因分析

Permission denied（publickey）一般有两种原因。

• 客户端与服务端未生成 ssh key
• 客户端与服务端的ssh key不匹配

1. 生成ssh key

ssh-keygen -t rsa -C "xxxx@xxx.com"
# 注意ssh和-keygen之间没有空格
# 之后需要输入密码等，不管一路回车即可。
# 默认的就会在C/User/CurrentUser/.ssh/id_rsa下面生成 id_rsa 和 id_rsa.pub两个文件。

2.测试登录

ssh -v git@github.com

最后会出现

debug1: No more authentication methods to try.
git@github.com: Permission denied(publickey).

3.终端执行

ssh-agent -s
# SSH_AUTH_SOCK=/tmp/ssh-csx2das143s/agent.1974; export SSH_AUTH_SOCK;
# SSH_AGENT_PID=1975; export SSH_AGENT_PID;
# echo Agent pid 1975;

4.终端执行

ssh-add ~/.ssh/id_rsa
# Could not open a connection to your authentication agent.

5.终端执行

ssh-agent bash

6.终端执行

ssh-add ~/.ssh/id_rsa
# Identity added: /C/User/CurrentUser/.ssh/id_rsa (xxxx@xxx.com)

7.配置 github端

• 点头像，进入Personal settings/SSH and GPG keys
• 点击 New SSH key
• title 随便起
• 内容是 /C/User/CurrentUser/.ssh/id_rsa下的id_rsa.pub的内容。

8.验证Key

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

9.问题解决辣。