Redundant server configuration in SCADA systems - Mini Project: Build & Apply

Redundant Server Configuration

📖 Scenario: You are working in a SCADA system environment where continuous monitoring is critical. To ensure the system stays online even if one server fails, you need to set up a redundant server configuration.

🎯 Goal: Build a simple configuration setup that defines two servers and a failover mechanism to switch to the backup server if the primary server is down.

📋 What You'll Learn

Create a dictionary called servers with keys primary and backup and their IP addresses as values

Add a variable called failover_enabled set to True

Write a function called get_active_server that returns the primary server IP if failover_enabled is True, else returns the backup server IP

Print the active server IP using the get_active_server function

💡 Why This Matters

🌍 Real World

In SCADA systems, continuous monitoring is critical. Redundant servers ensure the system stays online even if one server fails.

💼 Career

Understanding redundant server configuration is essential for DevOps roles managing high-availability systems in industrial environments.

1

Create the server dictionary

Create a dictionary called servers with these exact entries: 'primary': '192.168.1.10' and 'backup': '192.168.1.11'.

SCADA systems

# Create the servers dictionary with primary and backup IPs
# Your code here

Need a hint?

Use curly braces {} to create a dictionary with keys and values.

2

Enable failover

Add a variable called failover_enabled and set it to True.

SCADA systems

servers = {'primary': '192.168.1.10', 'backup': '192.168.1.11'}
# Set failover_enabled to True
# Your code here

Need a hint?

Just assign the value True to the variable failover_enabled.

3

Define the failover function

Write a function called get_active_server that returns servers['primary'] if failover_enabled is True, else returns servers['backup'].

SCADA systems

servers = {'primary': '192.168.1.10', 'backup': '192.168.1.11'}
failover_enabled = True
# Define get_active_server function
# Your code here

Need a hint?

Use an if statement inside the function to check failover_enabled.

4

Print the active server IP

Write a print statement that displays the result of calling get_active_server().

SCADA systems

servers = {'primary': '192.168.1.10', 'backup': '192.168.1.11'}
failover_enabled = True

def get_active_server():
    if failover_enabled:
        return servers['primary']
    else:
        return servers['backup']

# Print the active server IP
# Your code here

Need a hint?

Call get_active_server() inside print() to show the active server IP.