Best Docker and Kubernetes Training - Docker Online Training
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Introduction to Docker & Kubernetes
Docker: A platform to create, deploy, and manage containers.
Kubernetes: A container orchestration tool that automates 
deployment, scaling, and management of containerized 
applications.
Importance: Why Docker and Kubernetes are essential for 
modern software development.
How Docker Works
Docker Containers: Lightweight, stand-alone, and executable 
packages of software.
Benefits:
– Isolation of applications
– Consistent environment across systems
– Faster delivery of software
Key Components: Docker file, Docker Hub, Images, Containers.
How Kubernetes Works
Kubernetes Overview: Automates the deployment and scaling of 
containers across clusters.
Core Components:
– Pods: Smallest unit in Kubernetes.
– Nodes: Machines that run the containers.
– Clusters: Group of nodes.
Features: Load balancing, auto-scaling, and self-healing.
Advantages of Docker
Portability: Write once, run anywhere.
Resource Efficiency: Requires fewer system 
resources compared to traditional VMs.
Scalability: Easy to scale up/down.
Faster CI/CD: Streamlines the build, test, and 
deployment process.
Advantages of Kubernetes
Scalability: Automatically scales containers up or 
down based on demand.
Self-Healing: Automatically restarts failed 
containers and reschedules them.
Load Balancing: Efficient traffic distribution 
across containers.
Declarative Management: Automates repetitive 
tasks through declarative configuration.
Disadvantages of Docker & Kubernetes
Docker
Security Concerns: Containers share the host OS, leading to potential vulnerabilities.
Complex Networking: Can be difficult to manage in large systems.
Overhead: Managing large-scale Docker deployments without orchestration is 
challenging.
Kubernetes
Steep Learning Curve: Complex to set up and maintain.
Overhead: Resource-intensive compared to simpler container management systems.
Management Complexity: Requires a dedicated team for effective management.
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