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没有这样的文件或目录“authorized_keys”

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没有这样的文件或目录“authorized_keys” 
$ ssh-keygen -t rsa -P ""
Generating public/private rsa key pair.
Enter file in which to save the key (/home/dhruvhadoop1/.ssh/id_rsa): cat /home/hadoopuser/.ssh/id_rsa.pub >> /home/hadoopuser/ .ssh/authorized_keys
open cat /home/hadoopuser/.ssh/id_rsa.pub >> /home/hadoopuser/ .ssh/authorized_keys failed: No such file or directory.
Saving the key failed: cat /home/hadoopuser/.ssh/id_rsa.pub >> /home/hadoopuser/ .ssh/authorized_keys.
$ chmod 600 authorized_keys
chmod: cannot access ‘authorized_keys’: No such file or directory
$ chmod 600 authorized_keys
chmod: cannot access ‘authorized_keys’: No such file or directory

答案1

这是提示

Enter file in which to save the key (/home/dhruvhadoop1/.ssh/id_rsa)

但您还没有回答文件路径。

因此通过以下方式重新开始生成

su - hadoopuser
ssh-keygen -t rsa -P ""

并使用默认值或其他文件名，但不使用类似的命令cat ...，例如

/home/hadoopuser/.ssh/id_rsa.pub

在那之后

cat /home/hadoopuser/.ssh/id_rsa.pub | sudo tee -a /home/hadoopuser/.ssh/authorized_keys
sudo chmod 600 /home/hadoopuser/.ssh/authorized_keys/authorized_keys

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