Github 连接问题之 REMOTE HOST IDENTIFICATION HAS CHANGED!

Zeyang Lin — Fri, 24 Mar 2023 13:42:41 GMT

缘起

今天在 git bash 命令行往 github push 代码的时候突然收到大大的警告信息，如下：

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the RSA key sent by the remote host is SHA256:uNiVztksCsDhcc0u9e8BujQXVUpKZIDTMczCvj3tD2s. Please contact your system administrator. Add correct host key in **************************** to get rid of this message. Offending RSA key in ****************************:2 Host key for github.com has changed and you have requested strict checking. Host key verification failed. fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.

这个仓库是用 ssh 连接作为 remote 的。

问题在哪

遂 google 之，发现就在今天 github 的 blog 发了 We updated our RSA SSH host key。

原来github在今天下午1点左右把他们的 RSA SSH 主机 key 给换了。

出现上面那个错误说明我在我的 ~/.ssh/known_hosts 里有过期的那个 key 的公钥。

解决方法

blog中给出的解决方法很简单，把 known_hosts 里的过期 key 删掉就行了：

$ ssh-keygen -R github.com

#Host github.com found: line 2
********/.ssh/known_hosts updated.
Original contents retained as **********/.ssh/known_hosts.old

然后进行任意一项连接到 remote 的操作，比如 git fetch，就会提示把新的公钥添加到我的 known_hosts 里，当然选 yes：

The authenticity of host ‘github.com (140.82.121.4)’ can’t be established. ED25519 key fingerprint is SHA256:+DiY3wvvV6TuJJhbpZisF/zLDA0zPMSvHdkr4UvCOqU. 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.

问题解决。

后记

最新的公钥在 github docs 里就可以找到 GitHub’s SSH key fingerprints 。

github.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl
github.com ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBEmKSENjQEezOmxkZMy7opKgwFB9nkt5YRrYMjNuG5N87uRgg6CLrbo5wAdT/y6v0mKV0U2w0WZ2YB/++Tpockg=
github.com ssh-rsa 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

— 全文完 —

My Visual Studio Code extensions for python & other development

Zeyang Lin — Mon, 31 May 2021 01:47:01 GMT

Python

ms-python.python

Pylance

ms-python.vscode-pylance

Black Formatter

ms-python.black-formatter

Flake8

ms-python.flake8

isort

ms-python.isort

Jupyter

ms-toolsai.jupyter

Data Wrangler

ms-toolsai.datawrangler

Mypy Type Checker

ms-python.mypy-type-checker

Pylint

ms-python.pylint

Ruff

charliermarsh.ruff

ty

astral-sh.ty

autoDocstring: VSCode Python Docstring Generator

njpwerner.autodocstring

Python Indent

kevinrose.vsc-python-indent

Sublime Text Keymap and Settings Importer

ms-vscode.sublime-keybindings note that it automatically imports sublime key bindings after installation, although it also prompts you to explicitly import a sublime settings file (while could be ignored).

Docker

ms-azuretools.vscode-docker

Kubernetes

ms-kubernetes-tools.vscode-kubernetes-tools

Remote - SSH

ms-vscode-remote.remote-ssh

Remote - Containers

ms-vscode-remote.remote-containers

GitLens

eamodio.gitlens

vscode-json

andyyaldoo.vscode-json

YAML

redhat.vscode-yaml

Even Better TOML

tamasfe.even-better-toml

Rainbow CSV

mechatroner.rainbow-csv

Prettier - Code formatter

esbenp.prettier-vscode

Prettier SQL VSCode

inferrinizzard.prettier-sql-vscode

SQL Formatter

adpyke.vscode-sql-formatter

Mojo

modular-mojotools.vscode-mojo

Amazon Q

amazonwebservices.amazon-q-vscode

Baidu Comate

baiducomate.comate

Cline

saoudrizwan.claude-dev

CodeGeeX

aminer.codegeex

Windsurf Plugin (formerly Codeium)

codeium.codeium

Gemini Code Assist

google.geminicodeassist

Google Cloud Code

googlecloudtools.cloudcode

Github Copilot

github.copilot

Github Copilot Chat

github.copilot-chat

iFlyCode

anhuizhuojiantechnology.iflycode

TONGYI Lingma

alibaba-cloud.tongyi-lingma

Trae AI(formerly MarsCode): Coding Assistant

marscode.marscode-extension

GitHub Theme

github.github-vscode-theme

Git on BlueberryPy