ssh 免密碼登錄root用戶

1 每臺虛擬機分別執行 ssh-keygen -t rsa 2 將從機公鑰追加到主機上 ssh-copy-id -i ~/.ssh/id_rsa.pub hadoop 3 主機執行 cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys 3 複製到所有從機 scp ~/.ssh/authorized_keys [email protected]:~/.ssh

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