Key authentication issues for Linux two virtual machines

Key authentication between 1.desktop server two virtual machines

First look at the true IP: if 178.25.254.10

Then two virtual machines can set IP to desktop 178.25.10.11

Server 178.25.10.12

2. Revenue command: Nm-connection-editor or Nmtui for quick editing

3. After completing the IP setting, make the key on the server: Ssh-keygen

1) Always press the ENTER key to quickly set up

2) Ls/root/.ssh will display Id_rsa id_rsa.pub (private key, public key)

3) ssh-copy-id-i/root/.ssh/id_rsa.pub [email protected]

4) Scp/root/.ssh/id_rsa [email protected]:/root/.ssh/

It all looks very perfect, but the point is that we might have a key before, then we have to execute a command

: Rm-fr/root/.ssh If you execute this statement under a desktop virtual machine, there may be a different problem, first we delete the. SSH directory or delete the. ssh directory file or execute rm-fr/root/.ssh/*.

I was annoyed at the varying degrees of errors I had when I executed these two statements. After all, the test is not enough, only one to try, maybe a machine problem, I am on the other computer operation did not appear this error.

The first is to execute rm-fr/root/.ssh/*. But executing on the server

Scp/root/.ssh/[email protected]:/root/.ssh/but hint. SSH is a directory

Scp/root/.ssh/id_rsa [e-mail protected]:/root/.ssh This sentence finally did not "/" but still did not pass. There's no way to Resetdesktop.

The second execution of RM-FR/ROOT/.SSH performs the above two methods of transmission under server. Mactan The first sentence is still. SSH is a directory. The second sentence transmits successfully id_rsa. But underneath the desktop, there's just one more/root/.ssh. and SSH remote access failed. I 艹

either. SSH is a directory or more/root/.ssh can indicate that the transmission is incorrect in order to clean up. SSH does not appear in no such directory or is a directory.

I first cd/root/.ssh and then execute rm-fr/root/.ssh .

Executing the scp/root/.ssh/[email protected]:/root/.ssh/ under Server is 0k.

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Key authentication issues for Linux two virtual machines