harinadhareddydevops/backend-docker

Backend Application:-

Backend Python Flask Application This repository contains the backend code for a Python Flask application. The application serves as the server-side component, handling requests and providing data to the frontend of the web application. It is built using the Flask framework, which is a lightweight and flexible web framework for Python.

Getting Started To get started with this backend application, follow the instructions below:

Services Involved:

cloud : AWS services: 1.EC2 2.RDS

Prerequisites

We are running this application on top of VM. So we need to launch an instance. Create a mysql database in rds Install all the dependencies which are mentioned in dependencies.sh file in this repo

Procedure

------>first we have to create an ec2 instance for Backend application

------>Create the database in rds and allow 3306 from backend instance sg 3306 -- backend-sg

Go through with the commands :

---->Connect to the instance

1. yum install git -y

2. git clone <'git url link'>

3. cd <'foldername'>

4. cd <'backend flodername'>

5. sh dependencies.sh

---->After installing all the dependencies, connect with rds and create a table and then insert some values as your requirement,--for that follow the below commands

6. mysql -h <'rds endpoint'> -u <'username'> -p <'password'>

7. CREATE TABLE <'tablename'>( name VARCHAR(50) NOT NULL, roll INT NOT NULL, grade CHAR(1) NOT NULL );

8. INSERT INTO <'tablename'>(name, roll, grade) VALUES ('leo hank', 103, 'A');

   INSERT INTO <'tablename'>(name, roll, grade) VALUES ('ram', 104, 'B');

   INSERT INTO <'tablename'>(name, roll, grade) VALUES ('devops', 105, 'B');

9. \q ----to exit from the rds

configuration:

cofigure the application and give the rds creds i.e. host,username,password,db name

1. vi properties.db----- update the dbname,host,username,password

2. esc+:wq!-----command to save the file

Run the application:

 a. foreground------

 1)  python3 app.py

 b. background------

 2)  nohup python3 app.py &