Linux ssh password-free logon tutorial and linuxssh password-free tutorial

Linux ssh password-free logon tutorial and linuxssh password-free tutorial

1. Prepare the two machines to ping each other.

2. sudo ufw disable Firewall

3. sudo apt-get install openssh-server // install ssh

4. On the other two hosts: ssh-keygen-t rsa, press enter to generate the ". ssh" folder in the root directory of the user.

Cd ~ /. Ssh:

5. modify some operations:

1. Modify the hostname under/etc (and the name after @, which takes effect after restart)

2. Modify the host to match the name with the Ip address. sudo vim/etc/hosts

Modify

Node3 192.168.192.136

Node2 192.168.192.135

3. HOST: sudo cat id_rsa.pub> authorized_keys

Sudo scp authorized_keys node2 :~ /. Ssh

Authorized_keys: stores the public key for remote password-free logon. This file records the public keys of multiple machines.

Id_rsa: generated private key file

Id_rsa.pub: generated public key file

Know_hosts: list of known host public keys

6. Solutions to some problems:

Smbus host controller not enabled // Problem

Vim/etc/modprobe. d/blacklist. conf // blacklist it

Blacklist i2c_piix4