Introduction
In this tutorial we learn how to install clevis on CentOS 8.
What is clevis
Clevis is a framework for automated decryption. It allows you to encrypt data using sophisticated unlocking policies which enable decryption to occur automatically. The clevis package provides basic encryption/decryption policy support. Users can use this directly; but most commonly, it will be used as a building block for other packages. For example, see the clevis-luks and clevis-dracut packages for automatic root volume unlocking of LUKS volumes during early boot.
We can use yum or dnf to install clevis on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install clevis.
Install clevis on CentOS 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install clevis using dnf by running the following command:
sudo dnf -y install clevis
Install clevis on CentOS 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install clevis using yum by running the following command:
sudo yum -y install clevis
How To Uninstall clevis on CentOS 8
To uninstall only the clevis package we can use the following command:
sudo dnf remove clevis
clevis Package Contents on CentOS 8
/usr/bin/clevis
/usr/bin/clevis-decrypt
/usr/bin/clevis-decrypt-sss
/usr/bin/clevis-decrypt-tang
/usr/bin/clevis-decrypt-tpm2
/usr/bin/clevis-encrypt-sss
/usr/bin/clevis-encrypt-tang
/usr/bin/clevis-encrypt-tpm2
/usr/lib/.build-id
/usr/lib/.build-id/43
/usr/lib/.build-id/43/8e6ba121734f25a1051b42aa0fc886ba3f1cae
/usr/lib/.build-id/f5
/usr/lib/.build-id/f5/6b33e4f8d0531dbab538292bf8bcb9770bccbb
/usr/share/bash-completion
/usr/share/bash-completion/completions
/usr/share/bash-completion/completions/clevis
/usr/share/licenses/clevis
/usr/share/licenses/clevis/COPYING
/usr/share/man/man1/clevis-decrypt.1.gz
/usr/share/man/man1/clevis-encrypt-sss.1.gz
/usr/share/man/man1/clevis-encrypt-tang.1.gz
/usr/share/man/man1/clevis-encrypt-tpm2.1.gz
/usr/share/man/man1/clevis.1.gz
References
Summary
In this tutorial we learn how to install clevis on CentOS 8 using yum and dnf.
