3-tier-Architecture-using-Docker

One common architecture for information systems that includes a user interface and persistent storage of data is known as the three-tier architecture. A classic description of the vertical tiers is:
Presentation - windows, reports, and so on.
Application Logic - tasks and rules which govern the process.
Storage - persistent storage mechanism.
The singular quality of a three-tier architecture is the separation of the application logic into a distinct logical middle tier of software. The presentation tier is relatively free of application processing; windows forward task requests to the middle tier. The middle tier communicates with the back-end storage layer.
Commands used

To build any image

sudo docker build –t <image name> <path> 

     Used to build an image     sudo docker build –t frontend .

To run any image

sudo docker [commands] run 

     -p : :- port mapping
    --name :- Name of the Container
    --network :- name of network
    -it :- interactive mode
    -d :- deattached mode

To delete the image

 sudo docker rmi <image name> 

     -f :- forcefully delete the image

To Build, (re)create, start, and attache to containers for a service.

 sudo docker-compose up   

To Stop containers and removes containers, networks, volumes, and images created by up

 sudo docker-compose down

To delete the container

 sudo docker rm <container name>   

     -f :- forcefully delete the container

Restart docker

 sudo systemctl restart docker 

    Used to restart the docker

IP address of container

 sudo docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}} <container name/id> 

    to know the ip address of container

Create Network

 sudo docker network create [options] network  

 docker network create -d bridge my-bridge-network  

 sudo docker network connect <network name> <container name> 

 sudo docker network inspect <network name>

get MySQL database server

 mysql –h <ip address> -u <user name> -p <password(if any)>