How To Install bpfmon on CentOS 8

bpfmon is Traffic monitor for BPF expression/iptables rule

Introduction

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

What is `bpfmon`

While tcpdump shows what packets are going through the network, bpfmon will show how much in terms of bytes per second and packets per second in a nice pseudo-graphical terminal interface. bpfmon also supports monitoring an iptables rule that is selected by command line option or selected from a menu.

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

Install bpfmon 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 bpfmon using dnf by running the following command:

sudo dnf -y install bpfmon

Install bpfmon 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 bpfmon using yum by running the following command:

sudo yum -y install bpfmon

How To Uninstall bpfmon on CentOS 8

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

sudo dnf remove bpfmon

bpfmon Package Contents on CentOS 8

/usr/lib/.build-id
/usr/lib/.build-id/ab
/usr/lib/.build-id/ab/2bcd65931c2f12e68e3ef9f9b25f45a64fdf8c
/usr/sbin/bpfmon
/usr/share/licenses/bpfmon
/usr/share/licenses/bpfmon/LICENSE
/usr/share/man/man8/bpfmon.8.gz

References

bpfmon website

Summary

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