Linux System Password-free login remote server

1. Generate public key private key on current Linux
   Ssh-keygen
   The public key private key holds the path: ~/root/.ssh/
   Id_rsa id_rsa.pub
   
   
2. Login by remote host , enter directory ~/root/.ssh/
   Whether the Authorized_keys file exists, and if the new Authorized_keys file does not exist
   Copy the contents of the Id_rsa.pub file generated in the first step to the Authorized_keys
   You can also use the command Ssh-copy-id [email protected]
   
   
3. SSH remote If you do not want to enter the IP address every time to modify the/etc/hosts file
   Add 192.168.1.1 CentOS to the first line of the Hosts file
   Next time you need to link this server directly input SSH CentOS can
   Note : The server account is the same as the current login user name to take effect. Otherwise you need to enter SSH [email protected]
   
   
4. For frequent remote servers can be set
   CD bin/
   VIM ABC
   Enter the following:
   SSH 192.168.1.1
   chmod +x ABC
   The next time you enter the ABC command directly, you can remote to the CentOS server
   Note: If the setting is based on the third step
   The IP address can also be set to CentOS

Linux System Password-free login remote server