linux下ssh無密碼登陸配置

配置SSH免密碼登陸：

    (1)在master主機上生成祕鑰：ssh-keygen -t rsa -P ''

    (2)把id_rsa.pub追加到授權的key裏面去：cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

    (3)修改authorized_keys文件權限：chmod 600 ~/.ssh/authorized_keys

    (4)修改/etc/ssh/sshd_config文件中的配置內容：

        RSAAuthentication yes

        PubkeyAuthentication yes

        AuthorizedKeysFile .ssh/authorized_keys

    (5)重啓SSH服務：service sshd restart

    (6)將公鑰複製到集羣中的其它主機上：scp ~/.ssh/id_rsa.pub [email protected]:~/

    (7)將/etc/ssh/sshd_config複製到集羣中的其它主機上：scp /etc/ssh/sshd_config [email protected]:/etc/ssh/

    (8)在其他主機上把id_rsa.pub追加到授權的key裏面去：cat ~/id_rsa.pub >> ~/.ssh/authorized_keys

    (9)修改authorized_keys文件權限：chmod 600 ~/.ssh/authorized_keys

    (10)刪除複製的公鑰：rm -rf ~/id_rsa.pub

    (11)重啓SSH服務：service sshd restart

    注：6~7步爲在其他主機上的操作