How To Install pam_ssh on CentOS 7
Introduction
In this tutorial we learn how to install pam_ssh on CentOS 7.
What is pam_ssh
This PAM module provides single sign-on behavior for UNIX using SSH keys. Users are authenticated by decrypting their SSH private keys with the password provided. In the first PAM login session phase, an ssh-agent process is started and keys are added. The same agent is used for the following PAM sessions. In any case the appropriate environment variables are set in the session phase.
We can use yum or dnf to install pam_ssh on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install pam_ssh.
Install pam_ssh on CentOS 7 Using yum
Update yum database with yum using the following command.
sudo yum makecache
After updating yum database, We can install pam_ssh using yum by running the following command:
sudo yum -y install pam_ssh
Install pam_ssh on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf using the following command.
sudo dnf makecache
After updating yum database, We can install pam_ssh using dnf by running the following command:
sudo dnf -y install pam_ssh
How To Uninstall pam_ssh on CentOS 7
To uninstall only the pam_ssh package we can use the following command:
sudo dnf remove pam_ssh
References
Summary
In this tutorial we learn how to install pam_ssh on CentOS 7 using yum and dnf.
