Created CI/CD Pipeline of a web app using GitHub,Docker, Jenkins, AWS.

1. Setting Up a Virtual Environment 🛠️

What is a Virtual Environment?

Imagine you're setting up a small workspace where everything you need is neatly organized, separate from everything else on your computer. A virtual environment is like that workspace, but for your Python projects. It keeps all the necessary files and packages in one place, so they don’t mix with other projects.

Step 1: Install Virtual Environment

First, you need to install something called virtualenv, which allows you to create this organized workspace. Open your terminal (a command prompt window) and type in:
```
  py -m pip install --user virtualenv
```
Think of it like installing a special toolbox before you start your project.

Step 2: Create the Virtual Environment

Next, you’ll create your virtual environment (your organized workspace). You can name it whatever you like; here, I’ll call it env:
```
  py -m venv env
```
- Example: Imagine you’re setting up a new folder called "MyWorkspace" where you’ll do all your work. That’s what env is.

Step 3: Activate the Virtual Environment

Now, you need to "enter" your workspace. In your terminal, type:

    env\Scripts\activate.bat

Once activated, you’ll see the name env appear in your terminal, which means you’re working in that organized space.

2. Setting Up the Server 🔧

Step 1: Get the TO-DO App Code

To start working on the TO-DO app, you need to get the code from a website called GitHub, where developers share their projects. In your terminal, type:

    git clone https://github.com/harshitsahu2311/Django-todo-automate.git

Example: Think of this as downloading a recipe from the internet that you’re going to follow.

Step 2: Move to the Project Directory

Now that you have the code, you need to go into the folder where the code is stored:

    cd Django-todo

Example: It’s like opening the recipe book to the right page.

Step 3: Install Django

Django is a tool that helps you build websites. If you don’t have it already, install it by typing:

    pip install django

For more details, you can visit Django's official download page.

3. Setting Up the Database 📂

Step 1: Create Database Migrations

Websites often need a database to store information. To set up this database, type:

    python manage.py makemigrations

Example: Imagine you’re setting up shelves in your workspace to store important documents.

Step 2: Apply Database Migrations

Next, you need to put those shelves in place by typing:

    python manage.py migrate

Now your database is ready to use.

4. Creating an Admin User 👤

To manage your TO-DO app, you need to create an admin account. This is like being the manager who has control over everything. To set this up, type:

    python manage.py createsuperuser

Example: You’ll be asked to choose a username and password, like setting up a user account on a new device.

5. Running the TO-DO App 🚀

Step 1: Start the Server

Now it’s time to see your app in action. Type the following command to start it up:

    python manage.py runserver

Example: It’s like turning on the lights in your workspace and getting ready to work.

Open your web browser and go to http://127.0.0.1:8000/todos to see your TO-DO app.

Step 2: Running the Server on a Different IP

If you want others on your network to see the app, run the server on a different IP address by typing:

    python manage.py runserver 0.0.0.0:8000

Example: Imagine you’re sharing your workspace with others by opening the doors.

6. Troubleshooting Common Issues 🛠️

Issue: App Not Accessible

Sometimes, you might run into problems where the app doesn’t show up. This could be due to restrictions in the app settings.

Step 1: Modify `ALLOWED_HOSTS`

To fix this, you need to allow everyone to access your app. Open the settings file and make a small change:

    cd todoApp
    vi settings.py

Find the line with ALLOWED_HOSTS and change it to:

    ALLOWED_HOSTS = ['*']

Example: It’s like giving everyone permission to enter your workspace.

7. Running the Server in the Background 🕹️

If you want to keep the app running but still use your terminal for other things, type:

    nohup python manage.py runserver 0.0.0.0:8000 &

What is `nohup`?

This command keeps your app running in the background, even if you close the terminal.

8. Managing Running Services 📋

Step 1: Listing Running Services

To see what’s running on port 8000, type:

    lsof -i:8000

Step 2: Stopping the Server

If you want to stop the app, find its Process ID (PID) from the previous command and type:

    bashCopy codekill -9 PID

Example: It’s like turning off the lights in your workspace when you’re done for the day.