Mac OS ssh 连接提示 Permission denied (publickey)

这错误有点奇葩，MacBook的IDE(vscode和pycharm)远程都连不上，terminal能连上，windows的pycharm能连上，见鬼了，所以肯定不是秘钥的问题了，查了好久竟然发现是权限的问题。。

chmod 400 ~/.ssh/id_rsa

https://stackoverflow.com/questions/29933918/ssh-key-permissions-0644-for-id-rsa-pub-are-too-open-on-mac