免密登录GitHub

说明

本文算是对「管理多个Github帐号」的重新整理，在查看该文档重新配置GitHub免密登录时，发现不是很顺畅，于是按步骤的方式进行重新整理。而「管理多个Github账号」是对配置多个GitHub不成的问题分析。

本文基于macOS Monterey（v12.0.1）环境，不同版本可能会有所差异。

步骤

检查是否配置过sshkey

$ ls -al ~/.ssh
# ls: /Users/airhead/.ssh: No such file or directory

创建sshkey

$ ssh-keygen -t rsa -C "L4qiang@gmail.com"
# Generating public/private rsa key pair.
# Enter file in which to save the key (/Users/airhead/.ssh/id_rsa): /Users/airhead/.ssh/airhead-github/id_rsa
# 后续交互可以默认回车即可。

此处修改了默认的生成路径，方便后面管理不同的密钥。如无提示无效路径时，使用mkdir -p /Users/airhead/.ssh/airhead-github 创建对于目录。

创建成功

Your identification has been saved in /Users/airhead/.ssh/airhead-github/id_rsa
Your public key has been saved in /Users/airhead/.ssh/airhead-github/id_rsa.pub
The key fingerprint is:
SHA256:hh935Euebatrb1ckBz8/17t2YRwCTtiPbjwaMSKWWRM L4qiang@gmail.com
The key's randomart image is:
+---[RSA 3072]----+
|       E. o      |
|       o . +  .  |
|      + . o =  o |
|     = o o = o.o+|
|    . o S * + o+=|
|       o + O + ==|
|        . + = + *|
|         .  ...+o|
|           .o=+oo|
+----[SHA256]-----+

将公钥配置到GitHub

通过下面的语法复制公钥内容，并贴到Github上，SSH and GPG keys (github.com)

$ pbcopy < ~/.ssh/airhead-github/id_rsa.pub

添加~/.ssh/config

Host airhead-github
 Hostname github.com
 User git
 PreferredAuthentications publickey
 IdentityFile ~/.ssh/airhead-github/id_rsa

如果管理多个GitHub账号时，需要对应增加Host节点配置。

测试

ssh -T airhead-github

# This key is not known by any other names
# Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
# Warning: Permanently added 'github.com' (ED25519) to the list of known hosts.
# Hi crazy-airhead! You've successfully authenticated, but GitHub does not provide shell access.

验证提交

此处使用Hexo的博客仓库进行测试。

• 修改Hexo的配置_config.yml

# Deployment
## Docs: https://hexo.io/docs/deployment.html
deploy:
  type: git
  repo: airhead-github:crazy-airhead/crazy-airhead.github.io.git
  branch: master

• 发布

hexo d -g