Check Kubernetes Logging for any Malicious Reverse Connections or any Malicious Script Injected like Specific IP address or any Specific pattern

Check Kubernetes Logging for any Malicious Reverse Connections or any Malicious Script Injected like Specific IP address or any Specific pattern - serve as Early Detection Drill or CPU Usage is high or any Node is dead

Checking Kubernetes logs for malicious activities and implementing early detection for ransomware or server issues involves multiple steps and considerations. Below is a Python script that demonstrates how you can get started with this process. Keep in mind that this script serves as a starting point, and in a real production environment, you may need to adapt and enhance it based on your specific needs and configurations.

Before we proceed with the script, here are some prerequisites and assumptions:

1. You have access to the Kubernetes cluster and the necessary permissions to access logs and monitor nodes.
2. The script assumes you have already set up email alerting. For this, you can use Python's smtplib library to send email notifications.

Let's get started with the script:

In this script:

1. We define the malicious_pattern variable with a regular expression that includes any malicious IP addresses or keywords you want to monitor for.
2. The check_kubernetes_logs() function fetches logs from all pods in all namespaces, checks for the malicious pattern, and sends an alert email if it finds any matches.
3. The check_node_status() function executes kubectl commands to get CPU usage and node status, checks for high CPU usage or nodes that are not ready, and sends an alert email if any issues are detected.
4. The send_alert_email() function is responsible for sending email alerts using the provided SMTP server and credentials.

Remember to replace 'your_smtp_server', 'your_smtp_username', 'your_smtp_password', '[email protected]', and '[email protected]' with appropriate values for your email setup.

Please ensure you have installed the required libraries, such as kubernetes, smtplib, and email, before running the script. You can install them using pip:

pip install kubernetes         

Keep in mind that this script provides a basic framework to get you started. In a real production environment, you might want to add more sophisticated logic, error handling, and fine-tuning to cater to your specific requirements and cluster setup.