How To Install below on CentOS 8

below is Interactive tool to view and record historical system data

Introduction

In this tutorial we learn how to install below on CentOS 8.

What is below

below is an interactive tool to view and record historical system data. It has support for - information regarding hardware resource utilization - viewing the cgroup hierarchy - cgroup and process information - pressure stall information (PSI) - record mode to record system data - replay mode to replay historical system data - live mode to view live system data - dump subcommand to report script-friendly information (e.g. JSON and CSV) below does not have support for cgroup1. The name “below” stems from the fact that the below developers rejected many of atop’s design and style decisions.

We can use yum or dnf to install below on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install below.

Install below 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 below using dnf by running the following command:

sudo dnf -y install below

Install below 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 below using yum by running the following command:

sudo yum -y install below

How To Uninstall below on CentOS 8

To uninstall only the below package we can use the following command:

sudo dnf remove below

below Package Contents on CentOS 8

/etc/logrotate.d/below.conf
/usr/bin/below
/usr/lib/.build-id
/usr/lib/.build-id/ce
/usr/lib/.build-id/ce/c657d7778132626936e643520072ad4dd96b68
/usr/lib/systemd/system/below.service
/usr/share/doc/below
/usr/share/doc/below/README-epel.md
/usr/share/doc/below/README.md
/usr/share/doc/below/docs
/usr/share/doc/below/docs/below_config.md
/usr/share/doc/below/docs/below_dump.md
/usr/share/doc/below/docs/belowrc.md
/usr/share/doc/below/docs/building.md
/usr/share/doc/below/docs/cmd_config.md
/usr/share/doc/below/docs/comparison.md
/usr/share/doc/below/docs/docker.md
/usr/share/licenses/below
/usr/share/licenses/below/LICENSE
/var/log/below

References

Summary

In this tutorial we learn how to install below on CentOS 8 using yum and dnf.