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ssh-keygen password free login

ssh secret free login

Experimental environment: centos 6.5

[oracle@xuegod72 ~]$ ssh-keygen generate key command

Generating public/private rsa key pair. Just keep going.

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

/home/oracle/.ssh/id_rsa already exists.

Overwrite (y/n)?

[oracle@xuegod72 ~]$ ssh-copy-id -i .ssh/id_rsa.pub root@172.16.0.175

Note: here use ssh-copy-id copy key, try not to use cp, scp command copy will have problems

The-i parameter specifies the file to copy

root@172.16.0.175 is the default home directory location for root

[oracle@xuegod72 ~]$ ssh root@172.16.0.175

Last login: Wed Nov 2 14:28:37 2016 from 172.16.0.86

Note: The secret-free login here refers to the public key location where oracle users can log in to 172.16.0.175 directory/root/.ssh/authorized_keys.

From the results, the secret login was successful.

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