How can I see the bandwidth consumption of my server in real time?

To monitor bandwidth usage in real-time on a VitalPBX 4 server, there are several tools you can use. Below are some of the most popular:

1. iftop: iftop displays real-time bandwidth usage on a network interface. It’s similar to top, but instead of displaying CPU usage, it shows network activity.

Installation:

sudo apt update

sudo apt install iftop

Usage:

sudo iftop

2. nload: nload displays real-time graphs of incoming and outgoing traffic.

Installation:

sudo apt update

sudo apt install nload

Usage:

sudo nload

3. vnStat: vnStat doesn’t exactly show in real-time, but it logs bandwidth usage over time and can show statistics by hours, days, and months.

Installation:

sudo apt update

sudo apt install vnstat

Configuration and Usage:

To initialize vnStat’s database on an interface (e.g., `eth0`):

sudo vnstat -u -i eth0

To view the statistics:

vnstat -i eth0

4. bmon: bmon is another tool that displays real-time network traffic, offering various views and details about network activity.

Installation:

sudo apt update

sudo apt install bmon

Usage:

sudo bmon

5. NetHogs: NetHogs displays traffic per process, which can be useful to pinpoint which application or process is consuming bandwidth.

Installation:

sudo apt update

sudo apt install nethogs

Usage:

sudo nethogs

These tools will give you a detailed view of how and where bandwidth is being used on your server. You can choose the one that best fits your needs.