How To Install prelockd on CentOS 8
Introduction
In this tutorial we learn how to install prelockd on CentOS 8.
What is prelockd
prelockd is a daemon that locks memory mapped binaries and libraries in memory to improve system responsiveness under low-memory conditions.
We can use yum or dnf to install prelockd on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install prelockd.
Install prelockd 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 prelockd using dnf by running the following command:
sudo dnf -y install prelockd
Install prelockd 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 prelockd using yum by running the following command:
sudo yum -y install prelockd
How To Uninstall prelockd on CentOS 8
To uninstall only the prelockd package we can use the following command:
sudo dnf remove prelockd
prelockd Package Contents on CentOS 8
/etc/prelockd.conf
/usr/lib/systemd/system/prelockd.service
/usr/sbin/prelockd
/usr/share/doc/prelockd
/usr/share/doc/prelockd/MANPAGE.md
/usr/share/doc/prelockd/README.md
/usr/share/licenses/prelockd
/usr/share/licenses/prelockd/LICENSE
/usr/share/man/man8/prelockd.8.gz
/usr/share/prelockd
/usr/share/prelockd/prelockd.conf
/var/lib/prelockd
References
Summary
In this tutorial we learn how to install prelockd on CentOS 8 using yum and dnf.