SSH password-less Login

SSH password-less Login

0. Node

• Gserver150 192.168.111.150
• Gserver151 192.168.111.151
• Gserver152 192.168.111.152
• Gserver153 192.168.111.153

1. Execute the ssh-keygen-t rsa command on each node

$ Ssh-keygen-t rsa

In ~ /. Generate the key id_sa and id_rsa.pub under ssh

2. append the id_rsa.pub file on each node to the ~ of gserver150 ~ /. Ssh/authorized_keys

$ Cat ~ /. Ssh/id_rsa.pub | ssh geobeans@192.168.111.150 "cat-> ~ /. Ssh/authorized_keys"

The appended authorized_keys file is

3. Copy the authorized_keys file on gserver150 to 151 ~ 153 ~ /. Ssh directory

$ Scp geobeans@192.168.111.150 :~ /. Ssh/authorized_keys ~ /. Ssh/

4. Change the authorized_keys permission to 600

$ Chmod 600 ~ /. Ssh/authorized_keys

Complete ssh password-less login configuration. Log on to another node on any node, for example, log on to gserver151 from gserver150.

$ Ssh 192.168.111.151

Enter the password for the first login. You do not need to enter the password after logging on to gserver151.

Configure SSH password-less logon in CentOS

Implement SSH password-less authentication login in Linux

How to configure SSH for Ubuntu and CentOS to enable password-less Login

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