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How to Set Up Password-Less SSH Authentication (Jump Host to Multiple Servers)

Tired of your automation scripts failing because they keep asking for a password? This classic sysadmin task is essential for seamless operations in any modern data center environment!

In this quick and straightforward tutorial, we walk you through the entire process of setting up password-less SSH authentication from a Jump Host (user thor) to multiple Application Servers (stapp01, stapp02, stapp03). This enables continuous, hassle-free access for scripts and automation tools.

What You Will Learn:

Generating a secure public/private key pair using ssh-keygen.

Distributing the public key to multiple remote users (tony, peter, bruce, etc.) using the efficient ssh-copy-id command.

Verifying your password-less access to ensure the setup is complete and ready for automation.

This method is crucial for any Linux engineer or system administrator looking to streamline their workflow and secure their network access without manual intervention.

Commands Used:

ssh-keygen
ssh-copy-id [user]@[server]
ssh [user]@[server]


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#SSHSecurity #PasswordlessSSH #Sysadmin #LinuxTutorial #Automation #JumpHost