In this module, you learned:

Overview of Cloud Native Security:
Introduction to cloud-native security, providing insights into securing applications and data in Kubernetes environments.

Cloud Security Considerations:
Exploration of security considerations specific to cloud environments, highlighting key factors to address in Kubernetes clusters.

Accessing the API:
Understanding the mechanisms and considerations for accessing the Kubernetes API, a critical aspect of cluster management.

Authentication:
Overview of authentication in Kubernetes, detailing methods and strategies for verifying the identity of users and components.

Authorization:
Exploration of authorization mechanisms in Kubernetes, defining and regulating access to various cluster resources.

ABAC, RBAC, and Webhook Modes:
Comparison and understanding of Access-Based Authentication Control (ABAC), Role-Based Authentication Control (RBAC), and Webhook modes.

Admission Controller:
Introduction to admission controllers, which enforce policies and security constraints on objects during their lifecycle in the cluster.

Security Contexts:
Understanding security contexts, allowing the definition of security settings for pods and containers.

Network Security Policies:
Overview of network security policies, providing a way to control the communication between pods.

Network Security Policy Example:
Practical example demonstrating the implementation of network security policies in a Kubernetes cluster.

Default Policy Example:
Example illustrating the default network security policy settings, offering insights into the baseline configurations.

Lab - Security Context:
Hands-on lab guiding you through the implementation of security contexts, reinforcing practical skills in securing pods.

Lab - Add New Worker Node:
Practical exercises in adding a new worker node to the Kubernetes cluster, contributing to hands-on experience in cluster management.

Lab - Install Kubernetes Metrics Server (HPA):
Hands-on lab providing step-by-step instructions for installing the Kubernetes Metrics Server and configuring Horizontal Pod Autoscaler (HPA).

Lab - Set Autoscaling with Horizontal Pod Autoscaler:
Practical exercises in setting up autoscaling with Horizontal Pod Autoscaler, allowing dynamic adjustment of the number of pods.

Lab - Upgrading Kubernetes Cluster:
Hands-on lab guiding you through the process of upgrading a Kubernetes cluster, reinforcing practical skills in cluster maintenance.

Quiz - Security and Cluster Management:
Evaluation quiz covering key concepts learned in the module, reinforcing understanding through assessment.