Pipe Tshark Project

This project consists of two simple Flask web apps and an Nginx load balancer, all running in separate Docker containers.

Project Structure

• app1/: Contains the Dockerfile and Python file for the first Flask web app.
• app2/: Contains the Dockerfile and Python file for the second Flask web app.
• nginx.conf: Contains the configuration file for the Nginx load balancer.
• docker-compose.yml: Defines the services that make up the app.

How to Run

Run and build if a changge the Docker containers:

docker-compose up --build

You should now be able to access the Flask web apps via the Nginx load balancer at http://localhost.

How to Stop

To stop the Docker containers, use the following command:

docker-compose down

Please replace http://localhost with the actual URL if you have configured it differently in your Nginx configuration.

How to install tshark inside the container

In order to capture the traffic of the load balancer, use the following command:

# run commands in bash inside the container
sudo docker exec -it my-docker-compose-project_load_balancer_1  /bin/bash

# install tshark inside the container (no)
apt update && apt install tshark -y

# set up tshark to capture live into /home/packets/tshark.pcap file
tshark -i any -w ./home/packets/tshark.pcap

To retrieve the captured traffic live from the host side

# make a first-in-first-out pipe
mkfifo /tmp/temp.pcap

# live redirect the output from the volume synced file to the fifo  
sudo tail -n +0 -f ./packets/tshark.pcap > /tmp/sharkfin &

# run wireshark on that fifo
sudo wireshark -k -i /tmp/temp.pcap &

Special thanks fly to:

• Special thanks fly to Gregxsundays.