Chapter 1
System Management
Course: Comptia Linux Xk0 006
Subject: Comptia Linux Xk0 006
Chapter: Scripting Orchestration And Automation
1. Kubernetes Benefits and Application Use Cases
Kubernetes is an open-source platform for orchestrating containers. It automates the deployment, scaling, and management of containerized applications across clusters of machines. It is widely used in cloud-native architectures due to its reliability, portability, and scalability.
Benefits
Automatic scaling Kubernetes supports automatic scaling through:
- Horizontal Pod Autoscaler (HPA): Scales the number of pod replicas based on CPU, memory, or custom metrics.
- Vertical Pod Autoscaler (VPA): Adjusts resource requests and limits based on usage trends.
Example: A web application under increasing load will automatically scale from 2 to 8 replicas based on CPU usage.
Self-healing Kubernetes monitors the health of containers and nodes. If a container crashes or a node fails:
- Kubernetes reschedules pods onto healthy nodes.
- It restarts failed containers.
- It removes unresponsive pods from load balancers.