OpenSSH offers RSA and DSA authentication to remote systems without supplying a password. keychain is a special bash script designed to make key-based authentication incredibly convenient and flexible. It offers various security benefits over passphrase-free keys. How do I install keychain on a CentOS Linux 6.x or 7.x?
I do not want to start ssh-agent and ssh-add as described here to manage my ssh keys for password less login. How do I install keychain software to manage my keys running on a Debian or Ubuntu based cloud server?
We establish connections to remote systems without supplying a password. However, I do not want to store my password-less keys ( passphrase-free keys) on my servers. The ssh-agent, takes care of keys with a passphrase, which allowing me to have a ssh-agent process per system per login session easily. How do I dramatically reduces the number of times I have to punch my passphrase from once per new login session to once every time my local server is rebooted? How do I use keychain utility for all my backup scripts for secure passwordless login?