How to limit bandwidth on CentOS

Installation

sudo yum install -y epel-release && sudo yum install -y wondershaper

Limit the bandwidth

Syntax

sudo wondershaper <adapter> <max-download-speed> <max-upload-speed>

Why?

Sometimes you may want to test your application's behavior if the network connection is not stable.

Recommendation

If you connect the CentOS machine remotely, it is preferred to reset the bandwidth to normal after a timeout, otherwise, you may have a risk that you will never able to reconnect to the machine unless you're connecting to it physically.

The sample script to limit the download/upload bandwidth to 2000 Kbps for 30 seconds:

test_bw.sh

#!/bin/sh
sudo wondershaper eth0 2000 2000
sleep 30
sudo wondershaper clear eth0