免密钥打通

免密钥登录 复制公钥 将主机1公钥（/root/.ssh/id_rsa.pub）内容复制到主机2的/root/.ssh/authorized_keys中，此时可在主机1上免密钥登录主机2.反向打通步骤同样web 主机1 scp /root/.ssh/id_rsa.pub root@192.168.143.*:/root 主机2 cat /root/id_rsa.pub >> /root/.ssh/

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