Shulou(Shulou.com)05/31 Report--

The main content of this article is to explain "ssh password-free login method is what", interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Next let the editor to take you to learn "ssh password-free login method is what" it!

For example, node1 password-free node2

The old method works on the company computer:

Ssh-keygen-t rsa

Step 2: add the public key to the public key file for authentication

Cat ~ / .ssh/id_rsa.pub > > ~ / .ssh/authorized_keys

The above has realized the password-free login to this machine.

Step 3: modify file permissions

Chmod 600 ~ / .ssh/authorized_keys

Step 4: copy the public key authorized_keys file back to each node

Scp / .ssh/authorized_keys root@node2:~/.ssh/

Scp / .ssh/authorized_keys root@node3:~/.ssh/

At this point, password-free login is completed. Test whether you can log in without a password

# ssh node2

If you do not prompt for a password and log in to node2 directly, the name configuration is successful.

But the company computer, no matter how I deal with it, no matter how to find a lot of methods on the Internet. Finally, a friend in the group instructed me to use the method:

Ssh-keygen generates public and private key pairs.

Ssh-copy-id copies the local public key to the authorized_keys file of the remote machine. Ssh-copy-id also gives you the right to home, ~. / ssh, and ~ /. Ssh/authorized_keys of the remote machine.

Step 1: use ssh-keygen on the local machine to generate public and private key pairs

Ssh-keygen-t rsa

Or go to the ~ / .ssh directory to execute ssh-keygen

Here's the point:

Step 2: copy the public key to the remote machine with ssh-copy-id

Ssh-copy-id-I / .ssh/id_rsa.pub node2

Ssh-copy-id-I ~ / .ssh/id_rsa.pub node1 (password-free for this machine, added by myself)

Note: ssh-copy-id writes key to the remote machine's ~ / .ssh / authorized_key. In the file

Step 3: log in to the remote machine without entering a password

Reference:

Ssh-keygen-t rsa-P ""-f ~ / .ssh/id_rsa

Ssh-copy-id-I ~ / .ssh/id_rsa.pub $dst

_ ip

Description:

Ssh-keygen creates public keys and keys.

Ssh-copy-id copies the public key of the local host to the authorized_keys file of the remote host.

Ssh-copy-id also sets appropriate permissions to the remote host's user home directory (home) and ~ / .ssh, and ~ / .ssh/authorized_keys

At this point, I believe that everyone on the "ssh password-free login method is what" have a deeper understanding, might as well to the actual operation of it! Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.