Introduction to Application Monitoring in DevOps

# Introduction to Application Monitoring in DevOps

## 1. **Introduction**

### 1.1. Tutorial's Goal
This tutorial provides an introduction to Application Monitoring within the DevOps landscape. At the end of this tutorial, you will have a better understanding of monitoring techniques and their importance in the DevOps world.

### 1.2. What Will You Learn?
- The importance of Application Monitoring in DevOps
- How application monitoring works
- Best practices for application monitoring

### 1.3. Prerequisites
- Basic understanding of DevOps principles
- Familiarity with coding, preferably in Python

## 2. **Step-by-Step Guide**

### 2.1. Understanding Application Monitoring
Application monitoring is a process that ensures that a software application processes and performs tasks as expected. In the context of DevOps, application monitoring is crucial to ensure continuous delivery and integration.

### 2.2. Importance of Application Monitoring in DevOps
- **Identify Issues Early**: Monitoring helps identify issues before they affect the end users.
- **Improve Performance**: By monitoring the application, you can identify bottlenecks and improve performance.
- **Ensure Availability**: Monitoring ensures that your application is available and responding as expected.

### 2.3. Best Practices for Application Monitoring
- **Monitor Continuously**: Continuous monitoring is key to ensure the health of your application.
- **Automate**: Automate the monitoring process to reduce human error.
- **Alerts**: Set up alerts to be notified when there are issues.

## 3. **Code Examples**

### 3.1. Simple Python Application Monitoring
Here's a simple script in Python that checks if a website is up:

```python
import requests

def check_website(url):
    try:
        response = requests.get(url)
        if response.status_code == 200:
            print(f"{url} is up!")
        else:
            print(f"{url} is down!")
    except requests.RequestException as e:
        print(f"Error checking {url}: {str(e)}")

check_website('https://www.google.com')

https://www.google.com is up!

# Your code here

websites = ['https://www.google.com', 'https://www.example.com']

for website in websites:
    check_website(website)