Day 12: Python Tasks for DevOps (Part 1) - File Operations

Welcome back to our Python for DevOps series! In today's installment, we'll focus on a crucial aspect of DevOps automation - File Operations. We'll explore the basics of working with files in Python. Let's dive into the world of automating file operations to enhance your DevOps toolkit.

🔶 Introduction to File Operations 🔶

✅ File Operations in Python

File operations are fundamental in the world of DevOps. Whether it's updating configuration files, analyzing log data, or managing server resources, understanding how to manipulate files programmatically is a key skill.

In Python, the os modules provide powerful tools for file and directory operations. We'll explore how to read, write, and manipulate files using these modules, ensuring efficient and reliable automation in your DevOps scripts.

✅ Automating File Operations

Let's get hands-on with automating file operations using Python. We'll cover tasks such as reading and writing files, updating configuration files, and handling exceptions gracefully.

# Server Configuration File

# Network Settings
PORT = 8080
MAX_CONNECTIONS=1000
TIMEOUT = 30

# Security Settings
SSL_ENABLED = true
SSL_CERT = /path/to/certificate.pem

# Logging Settings
LOG_LEVEL = INFO
LOG_FILE = /var/log/server.log

# Other Settings
ENABLE_FEATURE_X = true

def update_server_config(file_path, key, value):
    """
    Update a specific key-value pair in a configuration file.

    Parameters:
    - file_path (str): Path to the configuration file.
    - key (str): The key to be updated.
    - value (str): The new value to set for the key.

    Returns:
    - None

    This function reads the content of the specified configuration file, searches for
    the provided key, and updates its corresponding value. The updated content is then
    written back to the file.

    Example:
    update_server_config("server.conf", "MAX_CONNECTIONS", "1200")
    """
    # Read the content of the file
    with open(file_path, "r") as file:
        lines = file.readlines()

    # Write back the updated content to the file
    with open(file_path, "w") as file:
        for line in lines:
            if key in line:
                # Update the line with the new key-value pair
                file.write(key + "=" + value + "\n")
            else:
                # Keep the original line unchanged
                file.write(line)

# Example usage
update_server_config("server.conf", "MAX_CONNECTIONS", "1200")

🔶 Conclusion

Mastering file operations in Python and leveraging Boto3 for cloud-based tasks opens up endless possibilities for DevOps automation. In Part 2, we'll explore more advanced Python tasks for DevOps, so stay tuned!

Note: I am following Abhishek Verraamalla's YouTube playlist for learning.

GitHub Repo: https://github.com/Chandreshpatle28/python-for-devops-av

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Happy Learning :)

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