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This article introduces the relevant knowledge of "how to access the server without a password for SSH". Many people will encounter such a dilemma in the operation of actual cases, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Generate password pairs on machines that need to log on to a remote server without a password, such as A → B server

A server operation:

Ssh-keygen-t rsa

The output content can be directly entered all the way (enter)

If you perform the above step, two files id_rsa and id_rsa.pub will be generated in the ~ / .ssh directory, where id_rsa is the private key and saved on the local machine, and id_rsa.pub is the public key and is to be uploaded to the remote server.

Upload the public key file from server A to remote server B

Note: before uploading, you need to check if there is a ~ / .ssh directory on server B, if you don't need to create it.

B server creation method:

Mkdir / .sshchmod 755 ~ / .ssh

A server uploads to public key to B server

Scp / root/.ssh/id_rsa.pub root@10.10.10.212:/root/.ssh/authorized_keys

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