SSH 加密連線(免密碼登入)

在 主機 A)

建立金鑰檔

ssh-keygen -t rsa

Generating public/private rsa key pair.
Enter file in which to save the key (<your-home-dir>/.ssh/id_rsa): 按 Enter
Enter passphrase (empty for no passphrase): 按 Enter
Enter same passphrase again: 按 Enter

以上指令會產生兩個檔案

1. Private Key: id_rsa
2. Public Key: id_rsa.pub

chmod 0600 <your-home-dir>/.ssh/id_rsa

在主機 B)

將 id_rsa.pub 複製到 .ssh 目錄

cd ~/.ssh
mv id_rsa.pub host-A-hostname.pub
cat host-A-hostname.pub >> authorized_keys2

NOTE:

測試連線