Kubernetes

Unravel the complexities of Kubernetes with this hands-on guide! Start with an introduction to Kubernetes architecture and components such as nodes, Minikube, and kubectl commands. Follow tutorials to set up your first clusters and pods, and then dive into more advanced concepts like DaemonSets, batch jobs, and custom resource definitions. Perform resource management, set up autoscaling, deploy applications with Helm, and more!

Highlights include:
1) Architecture and components
2) Installation
3) Lens
4) Basic and advanced objects
5) Pod and container management
6) Scaling and load balancing
7) Storage
8) Governance and security
9) Monitoring and troubleshooting
10) Application development
11) Helm

Configure service and ingress networks, load balancing and autoscaling, application self-healing, and more

Auteur
Kevin Welter is the co-founder and managing director of HumanITy GmbH, which supports large corporations such as Deutsche Bahn, EnBW, and Deutsche Telekom with software development and associated processes. Kevin's goal is to make digitalization simple and attractive for medium-sized businesses.

Contenu
... Preface ... 13

... Structure ... 15

... Book Resources ... 19

1 ... Introduction to Kubernetes ... 21

1.1 ... Basic Principles and Concepts: Why Use Container Clusters at All? ... 21

1.2 ... Kubernetes, the Tool of Choice ... 34

1.3 ... Architecture and Components ... 45

1.4 ... A Kubernetes Cluster on Your Computer ... 53

1.5 ... Interaction with Kubernetes via the Command Line and Dashboard ... 61

1.6 ... Lens: The IDE for Kubernetes ... 81

1.7 ... The Kubernetes Cluster from Raspberry Pis ... 89

2 ... Basic Objects and Concepts in Kubernetes ... 95

2.1 ... Pod and Container Management ... 98

2.2 ... Annotations and Labels ... 118

2.3 ... Deployments and ReplicaSets ... 138

2.4 ... ConfigMaps and Secrets ... 152

2.5 ... Establishing a Communication with Services and an Ingress ... 171

3 ... Everything as Code: Tools and Principles for Kubernetes Operations ... 187

3.1 ... Declarative Configurations ... 188

3.2 ... YAML: The Language for Kubernetes ... 192

3.3 ... Version Management of Kubernetes Manifests ... 200

3.4 ... Continuous Integration and Continuous Delivery ... 213

3.5 ... Templating Using Kustomize ... 225

4 ... Advanced Objects and Concepts in Kubernetes ... 235

4.1 ... DaemonSets ... 236

4.2 ... Jobs in Kubernetes ... 239

4.3 ... Custom Resources and Custom Resource Definitions ... 248

4.4 ... Downward API ... 258

4.5 ... Pod Priority and Preemption ... 261

4.6 ... Versioning Objects in Kubernetes ... 263

5 ... Stateful Applications and Storage ... 265

5.1 ... Stateful Applications in Kubernetes through StatefulSets ... 266

5.2 ... Persistent Volumes and Persistent Volume Claims ... 273

5.3 ... Ephemeral Volumes ... 289

5.4 ... Other Features of Volumes ... 291

6 ... Kubernetes Governance and Security: Prepare for Production ... 299

6.1 ... Pod Security ... 301

6.2 ... Pod Security Admission ... 304

6.3 ... Admission Controller ... 306

6.4 ... Kubernetes Policies ... 308

6.5 ... Policy Objects ... 311

6.6 ... Role-Based Access Control in Kubernetes ... 313

7 ... Developing Applications for Kubernetes: Ready for Production ... 321

7.1 ... Managing Pod Resources ... 322

7.2 ... Readiness, Liveness, and Startup Probes ... 325

7.3 ... Scaling and Load Balancing ... 335

7.4 ... Monitoring ... 342

8 ... Orchestrating Kubernetes Using Helm ... 357

8.1 ... Helm: The Kubernetes Package Manager ... 358

8.2 ... Reading and Developing Helm Charts ... 368

8.3 ... Developing Custom Charts ... 385

8.4 ... Conclusion ... 394

... The Author ... 395

... Index ... 397