How To Install earlyoom on CentOS 8
Introduction
In this tutorial we learn how to install earlyoom on CentOS 8.
What is earlyoom
The oom-killer generally has a bad reputation among Linux users. This may be part of the reason Linux invokes it only when it has absolutely no other choice. It will swap out the desktop environment, drop the whole page cache and empty every buffer before it will ultimately kill a process. At least that’s what I think what it will do. I have yet to be patient enough to wait for it, sitting in front of an unresponsive system.
We can use yum or dnf to install earlyoom on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install earlyoom.
Install earlyoom 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 earlyoom using dnf by running the following command:
sudo dnf -y install earlyoom
Install earlyoom 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 earlyoom using yum by running the following command:
sudo yum -y install earlyoom
How To Uninstall earlyoom on CentOS 8
To uninstall only the earlyoom package we can use the following command:
sudo dnf remove earlyoom
earlyoom Package Contents on CentOS 8
/etc/default/earlyoom
/usr/bin/earlyoom
/usr/lib/.build-id
/usr/lib/.build-id/10
/usr/lib/.build-id/10/cba2ccf4f33493d5073009bdd2d8c9425eb25c
/usr/lib/systemd/system/earlyoom.service
/usr/share/doc/earlyoom
/usr/share/doc/earlyoom/README.md
/usr/share/licenses/earlyoom
/usr/share/licenses/earlyoom/LICENSE
/usr/share/man/man1/earlyoom.1.gz
References
Summary
In this tutorial we learn how to install earlyoom on CentOS 8 using yum and dnf.