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Ultimate Certified Kubernetes Administrator CKA 1st Edition by Rajesh Vishnupant Gheware ISBN 8197651159 9788197651151

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Author(s): Rajesh Vishnupant Gheware
ISBN(s): 9788197651151, 8197651159
Edition: calibre
File Details: PDF, 24.17 MB
Year: 2024
Language: english
SKU: EB-58431162 Category: Tag:

Ultimate Certified Kubernetes Administrator CKA 1st Edition by Rajesh Vishnupant Gheware – Ebook PDF Instant Download/Delivery: 8197651159, 9788197651151
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ISBN 10: 8197651159 
ISBN 13: 9788197651151
Author: Rajesh Vishnupant Gheware

Unlock the Power of Kubernetes: Master Cluster Excellence! Key Features ● Master Kubernetes from the ground up, covering foundational to expert-level skills. ● Enhance learning with practical examples, clear diagrams, and real-world applications. ● Tailored content to help you confidently pass the CKA certification exam. Book Description Embark on a journey from beginner to pro with this CKA Certification Guide. Seamlessly blending theory with hands-on practice, this indispensable Kubernetes companion provides clear explanations and real-world scenarios to guide you to success in Kubernetes administration. The book starts by giving a solid understanding of Kubernetes platform and how to confidently set up your clusters with step-by-step instructions. You will dive into Workload Objects to master crucial concepts, then explore Service and Ingress for a deep understanding of networking. Next, it moves to deploy and scale applications, ensuring you’re ready for any workload. This book offers the tools needed to design, deploy, and maintain efficient, scalable, and resilient applications in Kubernetes environments. It covers essential topics such as Pods, Deployments, and StatefulSets, along with providing insights into Kubernetes architecture and operations. The advanced section of the book focuses on enhancing your skills with chapters on security and troubleshooting, ensuring you can maintain your clusters effectively and managing microservices with precision. The final section of the book covers focused content and practice exercises to prepare you to ace the CKA certification exam. What you will learn ● Gain the skills to set up, configure, and maintain Kubernetes clusters, ensuring secure and efficient operations. ● Learn how to create, deploy, and manage applications on Kubernetes, including handling updates and scaling. ● Acquire in-depth knowledge of Kubernetes networking and storage, enabling you to design and implement robust solutions. ● Develop expertise in automating application deployments and managing their scaling and availability for optimal performance. ● Build the ability to identify, diagnose, and resolve common Kubernetes problems, ensuring smooth cluster operations. Table of Contents 1. Introduction to Kubernetes 2. Installing Kubernetes 3. Workload Objects – Pod, Deploy, StatefulSet 4. Service and Ingress – Exposing Apps Outside the Cluster 5. Deploy and Scale – Stateless Apps 6. Deployment Strategies – RollingUpdate, Recreate 7. Data Persistence – Local and Cloud 8. Deploy and Scale – StatefulSet 9. Configure Apps for Production Deployment 10. Cluster Database – Backup and Restore 11. Cluster Upgrade – kubeadm 12. CoreDNS 13. Networking – Pod Service and Ingress 14. Kubernetes CNI 15. Kubernetes Security 16. Troubleshooting 17. Kubernetes Production Essentials 18. Microservices Observability 19. Scalable Jenkins on Kubernetes 20. GitOps using ArgoCD and GitHub 21. CKA Exam Mastery Index About the Authors Rajesh Gheware is a seasoned professional in the IT industry, known for his expertise and contributions in the field of DevOps. With over two decades of experience, Rajesh has made a significant impact in the areas of cloud computing, containerization, and strategic IT architectures. His career has been marked by progressive roles, starting as a software engineer and evolving into a Chief Architect, a position he has held at several prestigious organizations.

Ultimate Certified Kubernetes Administrator CKA 1st Table of contents:

1. Introduction to Kubernetes
Introduction
Structure
Overview
Benefits of Kubernetes
Service Discovery and Load Balancing
Automated Rollouts and Rollbacks
Automatic Bin Packing
Self-Healing
Storage Orchestration
Secrets and Configuration Management
Kubernetes Architecture
Logical View
Control Plane
API Controller
ETCD Database
Scheduler
Controller (KCM – Kube Controller Manager)
Cloud Controller (CCM – Cloud Controller Manager)
Worker Plane
Kubelet
Kube-proxy
Dynamic View
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
Further Reading
2. Installing Kubernetes
Introduction
Structure
Basic Tools
Installing Oracle VirtualBox
Installing Vagrant
Minikube
Launching Ubuntu
Installing Docker
Installing Minikube
Launching Kubernetes Cluster
Testing the Minikube Kubernetes Cluster
Cleaning Up Minikube Cluster
Microk8s
Testing the Microk8s Kubernetes Cluster
Cleaning Up Microk8s Cluster
KIND – Kubernetes INside Docker
Testing the KIND Kubernetes Cluster
Multi-node KIND Cluster
Cleaning Up KIND Cluster
Kubeadm
Launching Cluster Nodes
Initializing the Master/Control Plane Node
Testing the Kubeadm Kubernetes Cluster
Cleaning Up the Kubeadm Cluster
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
3. Workload Objects – Pod, Deploy, StatefulSet
Introduction
Structure
Pod
Running Pods
Restart Policy
Pod Lifecycle
Container Probes
startupProbe
readinessProbe
livenessProbe
Deployment/Deploy
Scalability
Rollout of a New Change
Rollback
StatefulSet
Limitations
Running StatefulSet – Postgre Database
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
4. Service and Ingress – Exposing Apps Outside the Cluster
Introduction
Structure
Service
Creating a Service
ClusterIP
NodePort
Running a NodePort Service
Clean Up
LoadBalancer
Running a LoadBalancer Service
ExternalName
Ingress
Installing Ingress Controller
Running the Hello App
Setting Up Load Balancer – Nginx
Testing the App URL
Interaction Summary – Ingress
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
5. Deploy and Scale – Stateless Apps
Introduction
Structure
Setup
Metrics Server
Deployment
Scalability
Auto-scaling/HPA – Horizontal Pod Autoscaler
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
6. Deployment Strategies – RollingUpdate, Recreate
Introduction
Structure
Deployment Strategies
RollingUpdate
Recreate
Blue Green (aka Red Black)
Canary Deployment
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
7. Data Persistence – Local and Cloud
Introduction
Structure
Pod Storage (emptyDir)
Node Storage (hostPath)
Persistent Volume
PersistentVolumeClaim
PersistentVolume Types
Access Modes
Storage Class
Cloud Storage – AWS EBS
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
8. Deploy and Scale – StatefulSet
Introduction
Structure
Overview
Key Features
Use Case – Redis Database
Scaling
Pod Management Policies
Rolling Updates
Partitioned Rolling Updates
Limitations
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
9. Configure Apps for Production Deployment
Introduction
Structure
Overview
ConfigMap
Container env
Volume mount
Command Line Arguments
Secret
Probes
startupProbe
readinessProbe
livenessProbe
Probe Mechanisms
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
10. Cluster Database – Backup and Restore
Introduction
Structure
Understanding ETCD
Core Features of ETCD
ETCD’s Role in Kubernetes Cluster Management
ETCD’s Consensus Algorithm (Raft)
How Kubernetes Uses ETCD
Understanding Data Stored in ETCD
Data Model and Key Schemas
ETCD Cluster Configuration and Management
Setting Up an ETCD Cluster
Configuring ETCD for Kubernetes
Backup and Disaster Recovery
Importance of ETCD Backup
ETCD Data Manipulation and Access
Accessing ETCD with etcdctl
Basic Commands
Common etcdctl Commands and Operations
Step-by-Step Guide to Backing Up and Restoring ETCD
Backing Up ETCD
ETCD Data Restoration
Scaling ETCD Clusters
Security
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Key Terms
11. Cluster Upgrade – kubeadm
Introduction
Structure
Understanding the Release Cycle
Preparing for Cluster Upgrade
Executing the Cluster Upgrade
Installing KIND Utility
Launching the Cluster
Upgrading Worker Nodes
Version Skew and Compatibility Considerations
Rollback and Troubleshooting
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
12. CoreDNS
Introduction
Structure
Overview of CoreDNS
Comparison with Kube-DNS
CoreDNS Architecture and Components
Key Components of CoreDNS
CoreDNS Integration with Kubernetes
CoreDNS Deployment and Configuration
Configuration
Understanding Corefile File
Customizing CoreDNS
DNS in Kubernetes Networking
CoreDNS in Pods
Interaction with Other Components
Performance and Scalability
Performance Considerations
Scaling CoreDNS
Security: Safeguarding Kubernetes DNS Services
Securing CoreDNS Deployment
Operational challenges – CoreDNS
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Keywords
13. Networking – Pod Service and Ingress
Introduction
Structure
Kubernetes Networking Model
Understanding Within Pod communication (Multi Containers)
Understanding Pod-to-Pod Communication – Same Node
Understanding Pod-to-Pod Communication – Different Nodes
Understanding Pod-to-Service Communication
Understanding External-to-Service Communication
Via NodePort Service
Via LoadBalancer
Ingress-to-Service Communication
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Key Terms
14. Kubernetes CNI
Introduction
Structure
Overview: Kubernetes CNI Model
CNI Plugins
Selection Criteria
Installing CNI Plugin – Calico
Kubelet and CNI Plugin Discovery
Pod Networking Setup
Calico CNI Plugin
Network Policy
Network Policy Enforcement by Calico
Flannel CNI Plugin
Weave Net CNI Plugin
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Key Terms
15. Kubernetes Security
Introduction
Structure
Overview – Kubernetes Security Model
API Server – Central Access Point
Authentication and Authorization
Admission Control
Pod Security Standards
RBAC – Role Based Access Control
Example – Access to Dev Teams
Example – Jenkins CICD
Network Policy
Example – HR and Payroll apps
Creating Network Policies
Testing Network Policies
Securing Control Plane
Audit Logging
Example – Audit Policy
Conclusion
Multiple Choice Questions
Answers
Questions
Key Terms
16. Troubleshooting
Introduction
Structure
Overview
Troubleshooting Scenarios
Scenario 1: Network Policy Verification
Scenario 2: Resource Quota Management
Scenario 3: Investigating Node Issues
Scenario 4: Service and Ingress Troubleshooting
Scenario 5: Persistent Volume Troubleshooting
Scenario 6: ConfigMap and Secret Management
Scenario 7: Role-Based Access Control (RBAC) Configuration
Scenario 8: Service and Network Policy Configuration
Scenario 9: Securing Sensitive Data with Secrets
Scenario 10: Kubernetes Cluster Upgrade
Scenario 11: Setting Up and Troubleshooting Cluster Monitoring
Scenario 12: Optimizing Application Resource Usage
Scenario 13: Implementing and Testing Network Policies
Scenario 14: Cluster Backup and Restore
Scenario 15: Auto-Scaling Based on Custom Metrics
Scenario 16: Securing Sensitive Data in Transit and at Rest
Scenario 17: Implementing Advanced Scheduling Techniques
Scenario 18: Setting Up Cluster-Wide Logging
Scenario 20: Configuring Ingress for Service Routing and SSL Termination
Scenario 21: Debugging Cluster Network Issues
Scenario 22: Configuring Persistent Storage for Stateful Applications
Scenario 23: Managing Resource Quotas and Namespace Configurations
Scenario 24: Implementing a Blue-Green Deployment Strategy
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Key Terms
17. Kubernetes Production Essentials
Introduction
Structure
Overview
Production Essentials – Extensions
CNI Plugin
Metrics Server
Installation
Verification
Ingress Controller
Installation
Verification
Certificate Manager
Installation
Configuration
Verification
Prometheus and Grafana
Installation
Verification
EFK and Elastic APM
Installation
Verification
Conclusion
Multiple Choice Questions
Answers
Questions
Key Terms
18. Microservices Observability
Introduction
Structure
Overview
Observability
Tools Setup
Event Logs – EFK
Distributed Tracing – APM Server
Installation – APM Server
Weather Application – Architecture
Installation – Weather Application
Metrics – Prometheus and Grafana
Installation – Prometheus and Grafana
Metrics – Application
Metrics – Cluster
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Key Terms
19. Scalable Jenkins on Kubernetes
Introduction
Structure
Overview
Scalable Jenkins
Installation – Jenkins
Access Control
Cloud Kubernetes Plugin setup
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Key Terms
20. GitOps using ArgoCD and GitHub
Introduction
Structure
Overview
GitOps – Setup
Conclusion
Points to Remember
Multiple Choice Questions
Answers
Questions
Key Terms
21. CKA Exam Mastery
Introduction
Structure
Overview
Exam Areas
Format
Scenario-Based Tasks
Tips for Success
Conclusion
Points to Remember
Multiple Choice Questions

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