nginx.txt

LOAD BALANCING

- Within the folder where docker project is

sudo apt-get install nginx
sudo apt-get install apache2-utils

docker build -t flaskapp5 .
docker run -d -p 5001:5000 flaskapp5
docker run -d -p 5002:5000 flaskapp5
docker run -d -p 5003:5000 flaskapp5

ab -n 1000 -c 100 http://localhost:5001/ (takes more time)(optional)

Enter code: 
      - sudo nano /etc/nginx/nginx.conf

sudo chmod o+w /etc/nginx/nginx.conf
sudo rm /etc/nginx/sites-enabled/default

sudo nginx -t
sudo systemctl restart nginx

curl http://localhost/
ab -n 1000 -c 100 http://localhost/ (takes lesser time)

docker logs containerID

When a text editor opens, enter code:

          http {
          upstream flaskapp {			/// flaskapp is the folder name 
          server localhost:5001;
          server localhost:5002;
          server localhost:5003;
          }
          server {
          listen 80;
          location / {
          proxy_pass http://flaskapp;	  	/// flaskapp is the folder name 
          }
          }
          }